# Helonic - Full Page Index for LLM Discovery

Last updated: 2026-10-25

This is the extended version of llms.txt with detailed descriptions for every page on helonic.com. For the summary version, see https://helonic.com/llms.txt

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## Homepage

- https://helonic.com/ - Helonic is an AI-powered construction drawing analysis platform. Upload PDF construction drawings and get AI-detected coordination conflicts, code compliance issues, missing information, structural concerns, MEP conflicts, fire safety issues, accessibility problems, constructability issues, dimension conflicts, and specification discrepancies. 1,000+ drawing reviews completed. 1,000,000+ pages analyzed. 2,000,000+ issues caught. Purpose-built construction AI analyzes every page. Native Procore and Autodesk Forma integration. Found issues can be pushed back as RFIs. Y Combinator-backed.

## Core Pages

- https://helonic.com/press/facts - Helonic Facts: Dated, sourced facts about Helonic, including model codes checked (IBC, NEC, NFPA, ADA, no city or state amendments), typical 15 to 30 minute turnaround, 1,000,000+ pages analyzed, integrations, and the legal entity Articulate AI, Inc.
- https://helonic.com/about - About Helonic: Y Combinator-backed company founded by construction project management and software engineering veterans. Our mission is to prevent costly construction rework by catching design issues before they reach the field.
- https://helonic.com/pricing - Pricing: Pricing plans for AI-powered construction drawing analysis. Contact for custom quotes.
- https://helonic.com/privacy - Privacy policy for Helonic.
- https://helonic.com/terms - Terms of service for Helonic.
- https://helonic.com/ai-policy - AI Policy: Helonic's AI policy outlining AI usage, data handling, security controls, and governance for enterprise customers.
- https://helonic.com/security - Helonic security practices: SOC 2, encryption, access control, and incident response.

## Case Studies

Completed Helonic customer drawing reviews. Every issue listed below was found by Helonic in those reviews. Dollar figures are estimates of rework avoided.

- https://helonic.com/case-studies/general-contractor-mixed-use-development - Bay Area Tower Drawing Review: A general contractor used Helonic on a 24-story Bay Area tower, and Helonic found 847 issues on 340 sheets, mostly ducts through beams and detail mismatches. The contractor estimated about $320,000 in rework avoided.
- https://helonic.com/case-studies/mep-subcontractor-healthcare-facility - Houston Hospital MEP Review: An MEP subcontractor used Helonic on a Houston hospital expansion, and Helonic found 412 issues, including above-ceiling clashes and medical gas through structure. The subcontractor estimated about $180,000 kept out of the ceiling.
- https://helonic.com/case-studies/architecture-firm-k12-school-district - California K-12 Drawing Review: An architecture firm used Helonic on three California school sets. Helonic found 841 issues, mainly consultant drawings that did not match.
- https://helonic.com/case-studies/owners-rep-data-center-campus - Data Center Campus Drawing Review: An owner's rep used Helonic on a Northern Virginia data center. Helonic found floor-load conflicts that the owner's rep priced at about $890,000.
- https://helonic.com/case-studies/preconstruction-team-multifamily-residential - Denver Apartment Drawing Review: A preconstruction team used Helonic on a 280-unit Denver building. Helonic found 47 stack misses, about $210,000 kept out of the GMP.
- https://helonic.com/case-studies/general-contractor-phoenix-healthcare - Phoenix Hospital Drawing Review: A general contractor used Helonic on a Phoenix hospital addition. Helonic found 632 issues on 448 pages, mainly ducts through beams and medical gas through structure.
- https://helonic.com/case-studies/engineering-firm-minneapolis-preschool - Minneapolis Preschool Drawing Review: An engineering firm used Helonic on a Minneapolis preschool. Helonic found 214 issues on 86 sheets, including toilet rough-in in the casework, an HVAC outdoor-air mismatch, and kitchen floor drains off the equipment plan.
- https://helonic.com/case-studies/architecture-firm-atlanta-affordable-housing - Atlanta Affordable Housing Review: An architecture firm used Helonic on four Atlanta affordable housing sets. Helonic found 692 issues, mainly waste stacks that missed the slab and would have been cored on every floor.
- https://helonic.com/case-studies/owners-rep-nashville-hotels - Nashville Hotel Drawing Review: An owner's rep used Helonic on two Nashville hotels, and Helonic found 286 issues on 372 pages, including a 5,000-lb roof condenser with no support, a condensing-unit electrical clash, and an undersized generator pad. The owner's rep priced those at $50,000 to $300,000 each as field change orders.
- https://helonic.com/case-studies/general-contractor-portland-apartments - Portland Apartment Drawing Review: A general contractor used Helonic on three Portland apartment sets before permit. Helonic found 96 stack misses.
- https://helonic.com/case-studies/architecture-firm-salt-lake-restaurants - Salt Lake Restaurant Drawing Review: An architecture firm used Helonic on six Salt Lake City restaurants, and Helonic found 305 issues, led by HVAC airflow mismatches and restroom finish conflicts. The firm estimated about $120,000 in rework avoided.
- https://helonic.com/case-studies/engineering-firm-charleston-hotels - Charleston Hotel Drawing Review: An engineering firm used Helonic on a Charleston hotel. Helonic found 164 issues on 118 pages, mainly mechanical ducts in the wrong bay and rooms the schedule counted that the plan did not draw.
- https://helonic.com/case-studies/custom-home-builder-miami-residence - Miami Custom Home Drawing Review: A custom home builder with no BIM team and no QA/QC process used Helonic on a Miami home, and Helonic found a main plumbing stack drawn in the same wall as an electrical subpanel and trunk feeder, which avoided a $20,000+ change order. Helonic also found four more issues (impact window sizes, floor elevation, a beam over an open room, a pool pad), bringing the estimate to $80,000+ in avoided change orders.
- https://helonic.com/case-studies/design-team-owners-rep-north-carolina-school - North Carolina School Drawing Review: A design team and owner's rep used Helonic on a North Carolina school, and Helonic found a 4-inch sanitary stack landing on a banded post-tension tendon run in a second-floor slab, where the plumbing spec allowed coring and the structural notes prohibited it. Helonic also flagged an administration sign pointing left into a dead end, a detail the team said none of the other tools they tried found, and the team estimated the stack conflict at about $60,000 and three weeks if found after the pour.
- https://helonic.com/case-studies/owners-rep-boston-higher-ed-building - Boston Campus Building Drawing Review: An owner's rep used Helonic on a higher education campus building in Boston with a BIM team on the project, and Helonic found a 6-inch duct overlapping a joist at a grid whose largest allowed hole is 2 inches. The clash could not be built as drawn and had not been caught in the model coordination.
- https://helonic.com/case-studies/architecture-firm-seattle-apartments - Seattle Apartment Drawing Review: An architecture firm used Helonic on a Seattle apartment building with heat-pump heating, and Helonic found a spec that called for three current-carrying conductors on one circuit type while the legend showed two, plus a fuse sized at 20A for a continuous load that needs at least 25A. The firm said a similar heat-pump wiring change had already become a change order of about $80,000, and compared the review to a senior electrical engineer with 20+ years of experience.
- https://helonic.com/case-studies/engineering-firm-chicago-healthcare - Chicago Healthcare Drawing Review: An engineering firm used Helonic on a Chicago healthcare facility, and Helonic found isolation rooms scheduled to run positive, ducts crossing smoke barriers with no smoke dampers, and hand sinks with no plumbing. Those three issues came to about $95,000.
- https://helonic.com/case-studies/general-contractor-pennsylvania-manufacturing - Pennsylvania Manufacturing Drawing Review: A general contractor used Helonic on a 1,200-page set for a Pennsylvania manufacturing facility, and Helonic found ducts and cable tray blocking ESFR sprinklers over rack storage, duct and a sprinkler main inside the bridge crane envelope, process piping hung at joist midspan, and piping across the electrical room. The contractor priced six findings at more than $375,000 in field rework.
- https://helonic.com/case-studies/general-contractor-new-york-office-building - New York Office Building Drawing Review: A general contractor used Helonic on a 213-page set for a 14-story New York office building, and Helonic found tenant entry doors where the hardware schedule, security drawings, and electrical plans disagreed, unsleeved penetrations through post-tensioned slabs, ducts through steel beam webs, and reflected ceiling conflicts on every floor. The contractor priced four of the findings at $310,000 in field rework.
- https://helonic.com/case-studies/architecture-firm-wisconsin-senior-living - Wisconsin Senior Living Drawing Review: An architecture firm used Helonic on a 188-page construction document set for a Wisconsin senior living facility before permit, and Helonic found curbless showers with no slab depression, memory care locks with no fire alarm release, missing nurse call devices, no hot water mixing valves, and ducts crossing I-joists. Found in the field, those five conflicts would have cost at least $300,000.
- https://helonic.com/case-studies/general-contractor-dallas-life-science-lab - Dallas Life Science Lab Drawing Review: A general contractor used Helonic on a Dallas life science building before buyout, and Helonic found lab supply and exhaust mains that did not fit under the girders, plumbing buried in expansive clay under a suspended slab, 1-hour barriers between level 4 control areas, no tempered water at safety showers, and VAV boxes scheduled where the spec called for venturi airflow valves. The GC priced the five at $305,000 to $1.2 million if found in the field.
- https://helonic.com/case-studies/architect-engineer-ohio-student-housing - Ohio Student Housing Drawing Review: An architect and engineer used Helonic on an Ohio student housing building over a podium garage before permit, and Helonic found drain mains below the van-accessible headroom, wet-pipe sprinklers in the unheated garage, NFPA 13R specified where the building needed NFPA 13, one IDF per floor that could not reach the far units, and back-to-back outlets in rated demising walls. The firm priced the five at $510,000 to $1.7 million if found in the field.
- https://helonic.com/case-studies/owner-developer-detroit-mixed-use-historic-rehab - Detroit Mixed-Use Historic Rehab Drawing Review: A Detroit developer used Helonic on a mixed-use historic rehab before construction, and Helonic found no grease duct shaft above the future restaurant, a building storm main that bypassed the city-required detention system, new louvers in a historic facade under tax credit review, no retail meters or transformer location in the electrical service, and heat pumps sized at 47°F for a Detroit winter. The developer priced the five at $475,000 to $1.8 million if found in the field.
- https://helonic.com/case-studies/general-contractor-omaha-grocery-store - Omaha Grocery Store Drawing Review: A general contractor used Helonic on an Omaha grocery store before the slab pour, and Helonic found under-slab plumbing and conduit that followed an old fixture plan, prototype footings and roof details that ignored Omaha frost depth and snow drift, owner-furnished equipment that did not match the circuits, parking grades too steep for accessible stalls, and a roof with no secondary drainage. The GC priced the five at $165,000 to $705,000 if found in the field.

## Features

- https://helonic.com/features - Overview of all Helonic features: AI drawing analysis, 2D clash detection, code compliance, RFI generation, Procore/Autodesk integration, and more.
- https://helonic.com/features/clash-detection - 2D clash detection from PDF drawings without BIM: Helonic finds coordination conflicts across disciplines automatically from 2D PDF drawings. No BIM required.
- https://helonic.com/features/code-compliance - Code Compliance: Helonic checks drawings against IBC, ADA, fire codes, and egress requirements automatically.
- https://helonic.com/features/rfi-generation - One-click RFI generation from detected drawing issues: Helonic turns detected issues into formatted RFIs with one click. Export or push to Procore.
- https://helonic.com/features/spec-analysis - Drawing-to-specification cross-reference analysis: Helonic cross-references drawings against project specifications to catch inconsistencies.
- https://helonic.com/features/revision-comparison - Revision Comparison: Helonic compares two issues of a construction PDF drawing set and lists what changed, sheet by sheet, including changes nobody clouded, and checks the drawings against the specs and schedules. Added, removed, and renumbered sheets are listed separately.
- https://helonic.com/features/schedule-verification - Schedule Verification: Helonic validates door, window, finish, and equipment schedules against floor plans.
- https://helonic.com/features/dimensional-verification - Verify dimension strings add up correctly: Helonic checks dimensional consistency across plans, sections, and details.
- https://helonic.com/features/fire-life-safety - Fire Life Safety: Helonic verifies fire-rated assemblies, sprinkler coverage, and life-safety code compliance.
- https://helonic.com/features/accessibility-checking - Accessibility Checking: Helonic runs ADA compliance checking on 2D PDF drawing sets, checking accessible routes, door clearances, turning space, ramps, toilet rooms, reach ranges, parking, and signage against the 2010 ADA Standards, ICC A117.1, and IBC Chapter 11 without a BIM model.
- https://helonic.com/features/sheet-index-validation - Validate sheet index against actual drawing sheets: Helonic confirms every sheet in the index exists in the set and matches sheet numbers.
- https://helonic.com/features/annotation-detection - Annotation Detection: Helonic finds missing, inconsistent, or outdated annotations across the drawing set.
- https://helonic.com/features/drawing-set-completeness - Drawing Set Completeness: Helonic checks that the drawing set has all sheets required for the current phase.
- https://helonic.com/features/submittal-review - Submittal Review: Helonic AI submittal review checks shop drawings, product data, samples, and substitution requests against the governing spec section and contract drawings, and returns a requirement-by-requirement compliance matrix for the architect or engineer of record, who still approves.
- https://helonic.com/features/procore-integration - Procore Integration: Helonic pushes detected issues directly into your Procore RFI and submittal workflows.
- https://helonic.com/features/autodesk-integration - Autodesk Integration: Helonic syncs projects and drawings from Autodesk Forma, formerly Autodesk Construction Cloud, and can push the issues it finds back as RFIs.
- https://helonic.com/features/multi-model-analysis - Multi Model Analysis: Helonic uses a proprietary multi-model ensemble for higher recall and fewer false positives.
- https://helonic.com/resources/multi-llm-construction-drawing-review - How multi-LLM drawing review works: Helonic runs more than one model on the issued PDF set and keeps agreed findings. Method page. Product workflow is /features/multi-model-analysis.
- https://helonic.com/features/penetration-analysis - Penetration Analysis: Helonic finds structural penetrations that aren't coordinated with MEP routing.
- https://helonic.com/features/egress-compliance - Egress Compliance: Helonic verifies egress widths, distances, capacities, and exit signage against IBC.
- https://helonic.com/features/ceiling-coordination - Ceiling Coordination: Helonic coordinates above-ceiling MEP, structural, and architectural systems.
- https://helonic.com/features/foundation-review - Foundation Review: Helonic verifies foundation drawings against geotech reports and structural details.
- https://helonic.com/features/parking-compliance - Parking Compliance: Helonic checks parking counts, ADA stalls, drive aisle widths, and stall dimensions.
- https://helonic.com/features/envelope-analysis - Envelope Analysis: Helonic verifies envelope details: flashings, vapor barriers, thermal continuity, and transitions.
- https://helonic.com/features/stacking-analysis - Stacking Analysis: Helonic checks vertical stacking of plumbing risers, shafts, and column lines across floors.
- https://helonic.com/features/detail-cross-referencing - Detail Cross Referencing: Helonic confirms every detail callout points to a real detail and matches its referenced view.
- https://helonic.com/features/keynote-verification - Keynote Verification: Helonic validates keynote tags against the keynote legend and confirm consistent usage.
- https://helonic.com/features/ai-document-review - AI Construction Document Review: Helonic reviews a construction drawing set, its schedules, and the project manual together and flags drawing-vs-spec, schedule-vs-plan, and cross-sheet conflicts for QA/QC before issue and before bid.


## Solutions by Role

- https://helonic.com/solutions - Overview of how Helonic helps different construction professionals reduce rework and prevent costly field issues.
- https://helonic.com/solutions/general-contractors - AI drawing analysis for general contractors: Helonic reviews 2D PDF drawing sets for general contractors, finding coordination conflicts and drawing-to-spec mismatches at bid, preconstruction, buyout, and shop drawing review, and sends confirmed findings to Procore or Autodesk Construction Cloud as RFIs.
- https://helonic.com/solutions/architects - AI drawing analysis for architects: Helonic checks architects drawings for QA/QC, code compliance, and reduced RFIs and E&O exposure.
- https://helonic.com/solutions/mep-engineers - AI for MEP Engineers: Coordination & Code Review: Helonic reviews MEP coordination drawings on the 2D PDF set for plenum stacking conflicts, ducts through structure, and rated-wall penetrations, and checks them against IMC, IPC, NEC 110.26, NFPA 13, and NFPA 72.
- https://helonic.com/solutions/estimators - AI drawing analysis for estimators: Helonic checks estimators drawings for pre-bid risk assessment, and scope gap identification.
- https://helonic.com/solutions/subcontractors - AI drawing analysis for subcontractors: Helonic helps subcontractors find missing scope and drawing-versus-spec conflicts in 2D PDF bid sets before bidding and buyout, and checks shop drawings and submittals against the contract documents.
- https://helonic.com/solutions/project-managers - Project Managers: Helonic checks project managers drawings for tracking drawing issues, RFI management, and coordination oversight.
- https://helonic.com/solutions/structural-engineers - AI drawing analysis for structural engineers: Helonic checks structural engineers drawings for connection details, load path, and foundation review.
- https://helonic.com/solutions/owners-developers - Owners Developers: Helonic checks owners and developers drawings for project risk assessment, design quality assurance, and cost control.
- https://helonic.com/solutions/plan-reviewers - Plan Reviewers: Helonic checks plan reviewers drawings for code compliance checking, and systematic review workflow.
- https://helonic.com/solutions/construction-managers - Construction Managers: Helonic checks construction managers drawings for multi-project oversight, issue tracking, and team coordination.
- https://helonic.com/solutions/fire-protection-engineers - Fire Protection Engineers: Helonic reviews 2D fire protection drawings and sprinkler and fire alarm shop drawings against NFPA 13, NFPA 72, NFPA 101, and IBC Chapters 7 and 9, flagging obstructed heads, detector spacing misses, fire door rating mismatches, and unprotected penetrations, without running hydraulic calculations, designing systems, or estimating.
- https://helonic.com/solutions/interior-designers - Interior Designers: Helonic checks interior designers drawings for finish schedule verification, millwork coordination, and code compliance.
- https://helonic.com/solutions/civil-engineers - AI drawing analysis for civil engineers: Helonic checks civil engineers drawings for grading, utility coordination, and site plan review.
- https://helonic.com/solutions/preconstruction-teams - Preconstruction Teams: Helonic checks preconstruction teams drawings for systematic pre-bid review, risk identification, and budgeting support.
- https://helonic.com/solutions/mechanical-contractors - Mechanical Contractors: Helonic checks mechanical contractors drawings for ductwork routing, equipment clearances, and piping coordination.
- https://helonic.com/solutions/electrical-contractors - Electrical Contractors: Helonic checks electrical contractors drawings for panel schedules, circuit loads, and conduit routing conflicts.
- https://helonic.com/solutions/plumbing-contractors - Plumbing Contractors: Helonic checks plumbing contractors drawings for pipe sizing, fixture counts, and drainage slope verification.
- https://helonic.com/solutions/landscape-architects - Landscape Architects: Helonic checks landscape architects drawings for site plan coordination, grading, and utility conflicts.
- https://helonic.com/solutions/code-consultants - Code Consultants: Helonic checks code consultants drawings for systematic code compliance, occupancy classification, and egress analysis.
- https://helonic.com/solutions/commissioning-agents - Commissioning Agents: Helonic checks commissioning agents drawings for system design and sequences of operations on the issued drawings for commissioning agents.
- https://helonic.com/solutions/facilities-managers - Facilities Managers: Helonic checks facilities managers drawings for as-built drawings against the design set so facilities managers can plan maintenance.
- https://helonic.com/solutions/construction-lawyers - Construction Lawyers: Helonic checks construction lawyers drawings for defect analysis, claims support, and expert documentation.
- https://helonic.com/solutions/insurance-underwriters - Insurance Underwriters: Helonic checks insurance underwriters drawings for risk assessment, and construction quality indicators.
- https://helonic.com/solutions/design-managers - Design Managers: Helonic checks design managers drawings for design quality oversight, and interdisciplinary coordination.

## Comparisons

- https://helonic.com/compare - Comparisons: Ranked lists, Bluebeam and Navisworks alternatives, and Helonic vs X pages for AI drawing review, model checking, code compliance, and QA/QC tools, grouped by the job each tool does.
- https://helonic.com/compare/helonic-vs-chatgpt - Helonic vs ChatGPT and Claude: Helonic reviews a full 2D PDF set with categorized, located findings; ChatGPT and Claude suit one-off questions about a single detail.
- https://helonic.com/compare/helonic-vs-meltplan - Helonic vs MeltPlan: Helonic runs drawing QA that feeds Procore and ACC RFIs; MeltPlan is a GC preconstruction suite for bid leveling, takeoff, and document review.
- https://helonic.com/compare/meltplan-alternatives - Best MeltPlan Alternatives: Helonic for drawing QA with Procore and ACC RFIs, Provision for scope gaps, Togal for takeoff, BuildCheck for expert-verified review, and UpCodes for code research.
- https://helonic.com/compare/archiboost-alternatives - Best ArchiBoost Alternatives: Helonic for 2D PDF review without Revit, Tuuli for firm standards, Structured AI for in-Revit QA, BuildCheck, and UpCodes.
- https://helonic.com/compare/helonic-vs-archiboost - Helonic vs ArchiBoost: Helonic reviews 2D PDFs and creates Procore and ACC RFIs; ArchiBoost is an architect-focused QA/QC platform with Revit and firm-standard checks.
- https://helonic.com/compare/best-drawing-comparison-software - Best Drawing Comparison Software for Construction: Overlay tools show where lines moved; change-reading tools like Helonic say what changed and on which sheet. Bluebeam, Procore, Autodesk, TrunkReview, Diff GT, and Helonic compared.
- https://helonic.com/compare/trunk-tools-alternatives - Trunk Tools Alternatives for Drawing Review: Alternatives ranked by job: Helonic for full-set drawing review and revision comparison, Procore AI, Autodesk Forma, Bluebeam Max, and Provision.
- https://helonic.com/compare/provision-alternatives - Provision Alternatives for Preconstruction Review: Alternatives ranked by precon job: Helonic for drawing coordination and code review, Province, Document Crunch, Procore AI, and Trunk Tools.
- https://helonic.com/compare/helonic-vs-autodesk-construction-iq - Helonic vs Autodesk Construction IQ: Autodesk Construction IQ ranks risk in issues and RFIs a team has already logged, while Helonic reviews the issued 2D PDF drawings before those RFIs exist and can push the issues it finds into Autodesk Forma as RFIs.
- https://helonic.com/compare/bluebeam-max-alternatives - Best Bluebeam Max Alternatives: Bluebeam Max adds Smart Review checks for sheets, door and plumbing tags, and gridlines, and Helonic is the alternative for an automatic full-set coordination and code check that writes RFIs into Procore or Autodesk.
- https://helonic.com/compare/permittable-alternatives - Permittable Alternatives for Commercial Plan Sets: Permittable pre-checks residential permit packages, and Helonic is the alternative for commercial multi-discipline sets, checking code and coordination on every sheet before permit submittal.
- https://helonic.com/compare/groundbook-alternatives - Best Groundbook AI Alternatives: Groundbook AI alternatives by job include Helonic for drawing review that writes RFIs into Procore or Autodesk, BuildCheck for expert-verified review, and Togal for takeoff.
- https://helonic.com/compare/best-ai-tools-for-architects - Best AI Tools for Architects, by Task: These tools split the architect's workflow by task: Autodesk Forma and TestFit for massing, Chaos Veras and D5 Render for rendering, Glyph for Revit documentation, Helonic for QA/QC of the issued drawing set, UpCodes Copilot for code research, and Deltek Specpoint for specs.
- https://helonic.com/compare/best-ai-tools-for-mep-engineers - Best AI Tools for MEP Engineers, by Task: These tools split MEP work by task: cove.tool and Trane TRACE 3D Plus for loads, Augmenta and Pipeit for Revit routing, Revizto and Autodesk Forma Design Collaboration for model clashes, Helonic for review of the issued drawing set, and IES VE for energy modeling.
- https://helonic.com/compare/best-ai-drawing-review-for-procore - Best AI Drawing Review Software for Procore Workflows: Helonic pulls the drawing set from Procore and pushes accepted findings back as RFIs with sheet references, Procore AI's Drawing Analyst scans sets inside Procore, Buildcheck syncs human-validated comments, Trunk Tools checks RFIs and revisions, Revizto links model clashes to Procore RFIs, and Bluebeam runs markup sessions.
- https://helonic.com/compare/best-ai-drawing-review-for-autodesk-construction-cloud - Best AI Drawing Review Software for Autodesk Forma: Helonic syncs drawings from Autodesk Forma, formerly Autodesk Construction Cloud, and can push the issues it finds back as RFIs. Autodesk Assistant searches drawings, Construction IQ scores RFI risk, Forma Build's RFI AI drafts RFIs, Buildcheck pushes comments, Trunk Tools checks RFIs, and Revizto coordinates models.
- https://helonic.com/compare/best-ai-drawing-review-for-vdc-managers - Best AI Drawing Review for VDC and BIM Managers: Navisworks Manage runs federated model clash detection, Solibri checks IFC models against rules, Revizto automates clash grouping and issue tracking, Autodesk Model Coordination detects clashes in Autodesk Forma, Trunk Tools flags revision changes, and Helonic reviews issued 2D PDF sets and can push the issues it finds into Autodesk Forma as RFIs.
- https://helonic.com/compare/helonic-vs-navisworks - Helonic vs Navisworks: Navisworks Manage runs 3D clash tests on federated BIM models. Helonic finds clashes on issued 2D PDF sheets. Compares features, pricing models, and Qonic as a model-based option.
- https://helonic.com/compare/helonic-vs-autodesk-clash-detection - Helonic vs Autodesk clash detection: Helonic is for 2D PDF clash and spec review. Autodesk Navisworks and Construction Cloud are for federated BIM clash detection.
- https://helonic.com/compare/helonic-vs-bluebeam - Helonic vs Bluebeam: Helonic automates the drawing review. Bluebeam Revu is the markup tool, including Smart Review for document health and tags.
- https://helonic.com/compare/helonic-vs-solibri - Helonic vs Solibri: Solibri checks rules against the BIM model, and its AI assistant (Beta) helps set up rules on the Premium plan only. Covers every Solibri plan and when Helonic's 2D PDF drawing review fits better.
- https://helonic.com/compare/helonic-vs-revizto - Helonic vs Revizto: Helonic detects issues on the 2D set. Revizto runs clash detection and issue tracking in the federated model.
- https://helonic.com/compare/helonic-vs-procore-copilot - Helonic vs Procore Copilot: Helonic reviews the drawings sheet by sheet. Procore Copilot is the assistant inside Procore.
- https://helonic.com/compare/helonic-vs-procore - Helonic vs Procore: Helonic reviews the 2D set for coordination clashes, code issues, spec conflicts, and QA/QC misses, then can push an accepted finding into Procore as an RFI. Procore remains the project record.
- https://helonic.com/compare/helonic-vs-punchiq-vs-procore-qa-qc - Helonic vs PunchIQ vs Procore: Helonic is for AI drawing and spec review, PunchIQ is for punch and field QA/QC, and Procore is the project record.
- https://helonic.com/compare/helonic-vs-autodesk-build - Helonic vs Autodesk Build: Helonic runs the QA/QC pass on the issued PDFs, including clashes, code, and spec conflicts, and can push the issues it finds into Autodesk Forma as RFIs. Forma Build, formerly Autodesk Build, is the project management platform those files already live in.
- https://helonic.com/compare/helonic-vs-autodesk-assistant - Helonic vs Autodesk Assistant: Helonic is dedicated 2D drawing review. Autodesk Assistant is the chat assistant inside Autodesk Forma, formerly Autodesk Construction Cloud. Helonic can push the issues it finds into Autodesk Forma as RFIs.
- https://helonic.com/compare/helonic-vs-newforma - Helonic vs Newforma: Helonic reviews the drawings. Newforma handles transmittals and review registers.
- https://helonic.com/compare/helonic-vs-autodesk-docs - Helonic vs Autodesk Docs: Helonic reviews the drawings. Autodesk Docs is ACC document control, which is a different comparison from Autodesk Build.
- https://helonic.com/compare/best-software-to-reduce-rfis - Helonic is built to reduce RFIs that start in the drawing set.: These tools split the job: Helonic is built to reduce RFIs that start in the drawing set.
- https://helonic.com/compare/best-rfi-generation-software - Best RFI Generation Software: The best RFI generation software includes Helonic when the ticket starts from a marked finding.
- https://helonic.com/compare/best-constructability-review-software - Best Constructability Review Software: The best constructability review software includes Helonic for a full 2D PDF set.
- https://helonic.com/compare/best-preconstruction-ai-software - The best AI software for preconstruction review splits by job. Helonic reads the drawing set. Togal measures. Civils.ai covers site. Autodesk stores the files.: These tools split the job: The best AI software for preconstruction review splits by job. Helonic reads the drawing set. Togal for takeoff. Civils.ai for site. Autodesk for files you already store.
- https://helonic.com/compare/automated-plan-check-software - Helonic is the software that automates plan check on drawing sets for design and construction teams. PlanCheckPro and Archidian preview permit comments. CodeComply assists AHJs.: Automated plan check splits by who the tool serves: producer-side review, permit preview, or an AHJ tool. PlanCheckPro and Archidian preview permit comments, and CodeComply assists AHJs.
- https://helonic.com/compare/ai-drawing-review-tools - Helonic is the AI tool that reviews architectural and structural drawings together on 2D PDFs. Stru AI is deeper on structural codes. Navisworks wins inside a federated model.: This page compares AI tools that review architectural and structural drawings on 2D PDFs, plus the BIM incumbent. Stru AI goes deep on structure, BuildCheck and Flikt also read PDFs, and Navisworks wins inside a model.
- https://helonic.com/compare/best-2d-clash-detection-software - Best 2D Clash Detection Software: Software that works with 2D PDF plan sets splits in two. Bluebeam, Procore, and Fieldwire are markup tools. Helonic is the automatic check across architectural, structural, and MEP sheets, with a sheet coordinate and a Procore or Autodesk handoff.
- https://helonic.com/compare/best-ai-for-2d-pdf-plan-review - The best tools for 2D PDF drawing analysis include Helonic, InspectMind, and BuildCheck. They review issued plan sets for errors without BIM.: These tools split the job: The best tools for 2D PDF drawing analysis include Helonic, InspectMind, and BuildCheck. They review issued plan sets for errors without BIM. The 2026 category ranking stays on the blog.
- https://helonic.com/compare/helonic-vs-clashnex - Helonic vs ClashNex: Helonic reviews the full 2D set and can export RFIs. ClashNex AI runs coordination scans on PDF packages.
- https://helonic.com/compare/clashnex-alternatives - Best ClashNex alternatives: ClashNex alternatives split by job: full-set 2D error review with RFI export, ClashNex for coordination scans, and Navisworks inside a model.
- https://helonic.com/compare/independent-drawing-review-software - The best independent construction drawing review software includes Helonic for issued 2D PDFs, kept apart from the GC's own markup tools.: Independent drawing review software is not owned by the project-management platform it writes RFIs into. The best independent construction drawing review software includes Helonic for issued 2D PDFs.
- https://helonic.com/compare/helonic-vs-plangrid - Helonic vs PlanGrid: Helonic reviews the drawings before construction. PlanGrid's field layer, now in Autodesk Build, is where crews mark up sheets on site.
- https://helonic.com/compare/helonic-vs-fieldwire - Helonic vs Fieldwire: Helonic checks the issued 2D set for coordination clashes, missing dimensions, spec conflicts, code issues, and other QA/QC misses before work starts. Fieldwire tracks field tasks, inspections, and punch after installation.
- https://helonic.com/compare/helonic-vs-openspace - Helonic vs OpenSpace: Helonic finds clashes, code issues, and QA/QC misses on the drawings before installation. OpenSpace captures the built site in 360 photos after the work is in place.
- https://helonic.com/compare/helonic-vs-togal-ai - Helonic vs Togal.AI: Helonic runs clash detection and code compliance on the drawings. Togal.AI measures quantities and does not run the clash and code pass.
- https://helonic.com/compare/helonic-vs-bim-track - Helonic vs BIM Track: Helonic detects issues on the PDFs. BIM Track assigns clash issues inside the federated BIM model.
- https://helonic.com/compare/helonic-vs-plancheckpro - Helonic vs PlanCheckPro: Helonic runs coordination and code review across the full drawing set. PlanCheckPro simulates permit comments before submission.
- https://helonic.com/compare/helonic-vs-archidian - Helonic vs Archidian: Helonic runs producer-side plan check on issued 2D PDFs. Archidian scores permit intake and completeness.
- https://helonic.com/compare/helonic-vs-upcodes - Helonic vs UpCodes: Helonic checks code against the drawings. UpCodes is searchable code, assemblies, and products.
- https://helonic.com/compare/helonic-vs-flikt - Helonic vs Flikt: Helonic reviews the full architectural and structural set. Flikt.AI finds cross-sheet 2D conflicts.
- https://helonic.com/compare/archidian-alternatives - Best Archidian alternatives: Archidian alternatives are for producer-side plan check rather than permit-intake scoring. PlanCheckPro previews AHJ comments, and CodeComply is for intake reviewers.
- https://helonic.com/compare/upcodes-alternatives - Best UpCodes alternatives: UpCodes alternatives check code on the drawings rather than searching the code text. ICC is the official text, and Solibri checks the BIM model.
- https://helonic.com/compare/flikt-alternatives - Best Flikt alternatives: Flikt alternatives cover full-set architectural and structural review rather than cross-sheet conflicts only. BuildCheck and Stru AI cover the other 2D passes.
- https://helonic.com/compare/best-ai-for-architects-reviewing-consultant-drawings - Best AI for architects reviewing consultant drawings: These tools split the job: Distinct from the Helonic-for-architects landing.
- https://helonic.com/compare/helonic-vs-codecomply - Helonic vs CodeComply: Helonic does coordination and code review for design and construction teams. CodeComply assists jurisdictions and code consultants with permit review.
- https://helonic.com/compare/helonic-vs-lighttable - Helonic vs Lighttable: Helonic is self-service drawing review that can write Procore RFIs. Lighttable is expert-validated peer-review QC for developers and contractors.
- https://helonic.com/compare/ai-vs-manual-drawing-review - AI vs manual construction drawing review: This page compares an AI pass with a traditional manual plan review. A manual review samples sheets, and the automated pass reads the issued set.
- https://helonic.com/compare/2d-vs-3d-clash-detection - 2D vs 3D clash detection: Use 2D PDF analysis when the issued set is what will be built, and use BIM clash detection when a federated model exists. Navisworks runs that clash on the model.
- https://helonic.com/compare/in-house-vs-outsourced-review - In-House vs Outsourced Review: In-house drawing review keeps the markup with the project team. Outsourced review sends the set to an outside reviewer, and this page covers the cost and turnaround of that choice.
- https://helonic.com/compare/bluebeam-alternatives - Best Bluebeam alternatives: Bluebeam alternatives for markup, Mac, free use, and takeoff: Drawboard, Adobe Acrobat, PDF-XChange, Kreo, and Togal.AI, plus Helonic for AI review of the drawing set.
- https://helonic.com/compare/navisworks-alternatives - Best Navisworks alternatives: Navisworks alternatives for clash detection, model checking, and 4D: Revizto, Solibri, Autodesk Forma, Trimble Connect, Qonic, and SYNCHRO, plus Helonic for clash review on 2D PDFs.
- https://helonic.com/compare/buildcheck-alternatives - Best BuildCheck alternatives: BuildCheck AI alternatives for drawing and code review: Helonic, InspectMind AI, UpCodes Plan Review, CodeComply, and RediCheck's human review service.
- https://helonic.com/compare/procore-alternatives - Best Procore alternatives: Procore alternatives cover AI drawing review, Autodesk Build, and Fieldwire, and when to keep Procore as the PM system of record.
- https://helonic.com/compare/solibri-alternatives - Best Solibri alternatives: Solibri alternatives cover AI review that needs no IFC, and when to keep Solibri because the IFC is complete.
- https://helonic.com/compare/autodesk-build-alternatives - Best Autodesk Build alternatives: Autodesk Build alternatives compared: Procore, Fieldwire, Trimble ProjectSight, Newforma, and Bluebeam, plus Helonic for AI drawing review inside Autodesk Forma.
- https://helonic.com/compare/lighttable-alternatives - Best Lighttable alternatives: Lighttable alternatives cover self-service 2D QC, and when to keep Lighttable for expert-validated peer-review QC.
- https://helonic.com/compare/inspectmind-ai-alternatives - Best InspectMind AI alternatives: InspectMind AI alternatives ranked for teams that want continuous review with RFIs in Procore and Autodesk, and when to keep InspectMind for pay-per-page checks, scanned PDFs, and shop drawings.
- https://helonic.com/compare/plancheckpro-alternatives - Best PlanCheckPro alternatives: PlanCheckPro alternatives cover ongoing coordination and code review, and when to keep PlanCheckPro for a Florida-centered permit preview.
- https://helonic.com/compare/codecomply-alternatives - Best CodeComply alternatives: CodeComply alternatives cover producer-side drawing review, and when to keep CodeComply for AHJ and code-consultant permit review.
- https://helonic.com/compare/structured-ai-alternatives - Best Structured AI alternatives: Structured AI alternatives cover issued 2D PDF review, and when to keep Structured AI for in-Revit QA.
- https://helonic.com/compare/nomic-alternatives - Best Nomic alternatives: Nomic alternatives for teams that want a dedicated drawing set review instead of a firm-wide AEC agent platform, and when to keep Nomic.
- https://helonic.com/compare/firmus-ai-alternatives - Best Firmus AI alternatives: Firmus alternatives cover full-lifecycle review without a yearly analysis cap, and when to keep Firmus for precon phase compare.
- https://helonic.com/compare/stru-ai-alternatives - Best Stru AI alternatives: Stru AI alternatives cover multi-discipline 2D review, and when to keep Stru AI for deep AISC, ACI, and TMS detailing.
- https://helonic.com/compare/ichi-automation-alternatives - Best Ichi Automation alternatives: Ichi alternatives cover full-set drawing review, and when to keep Ichi for submittal and RFI processing.
- https://helonic.com/compare/specbook-ai-alternatives - Best Specbook AI alternatives: Specbook alternatives cover spatial clash and code review, and when to keep Specbook for spec-to-drawing matrix work.
- https://helonic.com/compare/datagrid-alternatives - Best Datagrid alternatives: Datagrid alternatives cover independent visual drawing review, and when to keep Datagrid for Procore-owned workflow AI.
- https://helonic.com/compare/tuuli-alternatives - Best Tuuli alternatives: Tuuli alternatives cover day-one 2D review, and when to keep Tuuli for QA trained on past RFIs.
- https://helonic.com/compare/document-crunch-alternatives - Best Document Crunch alternatives: Document Crunch alternatives cover drawing review rather than contract risk, and when to keep Document Crunch for contract and legal risk.
- https://helonic.com/compare/revizto-alternatives - Best Revizto alternatives: Revizto alternatives cover 2D detection rather than 3D issue tracking, and when to keep Revizto as the 3D issue room.
- https://helonic.com/compare/plangrid-alternatives - Best PlanGrid alternatives: PlanGrid alternatives cover precon review rather than field drawing access, and when to keep Autodesk Build for PlanGrid's field layer.
- https://helonic.com/compare/fieldwire-alternatives - Best Fieldwire alternatives: Fieldwire alternatives cover precon review rather than field tasks, and when to keep Fieldwire for field tasks and punch.
- https://helonic.com/compare/openspace-alternatives - Best OpenSpace alternatives: OpenSpace alternatives cover pre-construction drawing review, and when to keep OpenSpace for 360 capture after install.
- https://helonic.com/compare/togal-ai-alternatives - Best Togal.AI alternatives: Togal.AI alternatives cover clash and code review rather than takeoff, and when to keep Togal.AI for AI takeoff.
- https://helonic.com/compare/bim-track-alternatives - Best BIM Track alternatives: BIM Track alternatives cover 2D detection rather than model issue assignment, and when to keep BIM Track for model issue assignment.
- https://helonic.com/compare/best-ai-assistant-tools-for-construction - Best AI Assistants for Architects & Construction: These tools split the job: Agentic AEC assistants that automate technical work - drawing review (Helonic), takeoff (Togal.AI), scheduling (ALICE) vs general copilots.
- https://helonic.com/compare/best-ai-construction-estimating-software - Best AI Construction Estimating Software: The best AI construction estimating software in 2026 includes Togal.AI and Kreo for quantity takeoff, STACK and PlanSwift for cloud takeoff, and Helonic for the pre-bid drawing review that catches scope gaps before they are priced.
- https://helonic.com/compare/best-ai-tools-for-aec - Best AI Tools for AEC Professionals: AI tools for AEC firms by job: design (Autodesk Forma, TestFit), drawing review (Helonic), takeoff (Togal.AI, Kreo), scheduling (ALICE), field, and contracts.
- https://helonic.com/compare/best-ai-tools-for-civil-engineering - Best AI Tools for Civil Engineering: These tools split the job: Civil/site drawing review (Helonic), geotechnical AI (Civils.ai), site design (Bentley OpenSite, Transoft).
- https://helonic.com/compare/best-ai-tools-for-construction - Best AI Tools for Construction: These tools split the job: Drawing review (Helonic), takeoff (Togal.AI), scheduling (ALICE), analytics (Procore), PDF markup (Bluebeam).
- https://helonic.com/compare/best-ai-tools-for-floor-plans - Best AI Tools for Floor Plans: These tools split the job: AI floor plan accuracy & review (Helonic), generative layout (TestFit, Maket.ai), AI-assisted CAD (Revit, ARCHICAD).
- https://helonic.com/compare/best-ai-tools-for-structural-engineering - Best AI Tools for Structural Engineering: These tools split the job: Drawing review & coordination QA/QC (Helonic), connection design (IDEA StatiCa), analysis (SkyCiv, ClearCalcs).
- https://helonic.com/compare/best-building-code-compliance-software - Best Building Code Compliance Software: Building code compliance software by job: AI plan check (Helonic, UpCodes, InspectMind AI, CodeComply), BIM rule checks (Solibri), and code text (ICC Digital Codes).
- https://helonic.com/compare/best-ifc-drawing-review-tools - Best IFC Drawing Review Tools: These tools split the job: Full IFC set AI review (Helonic), Bluebeam Compare, Autodesk Docs/Procore distribution, Solibri for IFC models.
- https://helonic.com/compare/best-mep-drawing-review-tools - Best MEP Drawing Review Tools: These tools split the job: AI MEP clash review on 2D PDFs (Helonic), Revizto/Navisworks for BIM, Bluebeam markup, Trimble SysQue for fabrication.
- https://helonic.com/compare/best-plan-review-software-for-general-contractors - Best Plan Review Software for GCs: These tools split the job: AI first-pass review (Helonic), Bluebeam markup, Newforma/Procore workflow, outsourced plan check.
- https://helonic.com/compare/best-shop-drawing-review-software - Best Shop Drawing Review Software: These tools split the job: AI shop-to-contract comparison (Helonic), Bluebeam Studio, Newforma/Procore/Autodesk submittal routing.
- https://helonic.com/compare/helonic-vs-buildcheck - Helonic vs BuildCheck: BuildCheck AI reviews 2D drawings with an expert verifying each finding, prices per sheet, and syncs with Procore, with reviews taking 2 days to 2 weeks. Helonic typically returns findings in 15 to 30 minutes and writes RFIs in Procore and Autodesk.
- https://helonic.com/compare/helonic-vs-firmus-ai - Helonic vs Firmus AI: Firmus AI, now part of Bluebeam, compares drawing sets during preconstruction with yearly plan limits. Helonic fits teams that need code checks and Procore or Autodesk RFIs.
- https://helonic.com/compare/helonic-vs-inspectmind-ai - Helonic vs InspectMind AI: InspectMind AI is a self-serve plan check, free on up to 10 drawing pages, then $2.50 per drawing page on Standard ($4 Pro, $6 Max), with Excel or PDF export for Procore and a CSV export for ACC Issues. Helonic writes findings as RFIs inside Procore and Autodesk on custom annual pricing.

- https://helonic.com/compare/autodesk-assistant-alternatives - Best Autodesk Assistant Alternatives: The best Autodesk Assistant alternatives in 2026 include Helonic for AI drawing review that writes ACC RFIs, Procore Copilot for an assistant inside Procore, and Autodesk Assistant for ACC Q&A.
- https://helonic.com/compare/autodesk-docs-alternatives - Best Autodesk Docs Alternatives: The best Autodesk Docs alternatives in 2026 include Helonic for reviewing the PDFs Docs is holding, Procore Documents for document control, and Autodesk Docs for ACC file storage.
- https://helonic.com/compare/newforma-alternatives - Best Newforma Alternatives: The best Newforma alternatives in 2026 include Helonic for AI review that feeds the log, and Newforma for formal review registers.
- https://helonic.com/compare/procore-copilot-alternatives - Best Procore Copilot Alternatives: The best Procore Copilot alternatives in 2026 include Helonic for drawing review with Procore RFIs, and Procore Copilot for in-Procore Q&A.
- https://helonic.com/compare/helonic-vs-datagrid - Helonic vs Datagrid: Helonic analyzes the drawings. Datagrid connects and queries data already inside Procore.
- https://helonic.com/compare/helonic-vs-document-crunch - Helonic vs Document Crunch: Helonic finds technical issues on the drawings. Document Crunch reviews contracts and other legal text.
- https://helonic.com/compare/helonic-vs-ichi-automation - Helonic vs Ichi Automation: Helonic reviews the full drawing set. Ichi automates submittal and RFI paperwork after the issue exists.
- https://helonic.com/compare/helonic-vs-nomic - Helonic vs Nomic: Helonic reviews issued 2D PDF sets and writes RFIs into Procore and Autodesk. Nomic is a firm-wide AEC agent platform with per-seat pricing.
- https://helonic.com/compare/helonic-vs-specbook-ai - Helonic vs Specbook AI: Helonic finds spatial clashes and code issues on the drawings. Specbook AI builds the spec-to-drawing matrix.
- https://helonic.com/compare/helonic-vs-stru-ai - Helonic vs Stru AI: Helonic covers multiple disciplines on the 2D set. Stru AI goes deeper on structural code and connection detailing.
- https://helonic.com/compare/helonic-vs-structured-ai - Helonic vs Structured AI: Structured AI checks sets for architects and engineers in PDF and Revit. Helonic reviews issued sets for GCs and owners, with Procore and Autodesk RFIs.
- https://helonic.com/compare/helonic-vs-tuuli - Helonic vs Tuuli: Helonic runs a proprietary drawing analysis. Tuuli tunes later reviews from a firm's past RFIs.
- https://helonic.com/compare/best-construction-qa-qc-software - Best Construction QA/QC Software: Construction QA/QC software compared: drawing QA tools that check the set before issue, and field QC tools for inspections, punch lists, and defects.


## Blog

- https://helonic.com/blog - Blog: Industry insights and guides for construction professionals.
- https://helonic.com/blog/bay-area-multifamily-architect-case-study - Case Study: A Firm's Review Found 12 Comments. Helonic Found 78 Major Issues.: On a 572+ page Bay Area multifamily mixed-use set, a mid-size architecture firm's internal review produced 12 minor comments; Helonic found 78 major issues across more than nine runs, led by MEP coordination and clashes.
- https://helonic.com/blog/compare-drawing-sets-renumbered-sheets - How to Compare Drawing Sets When Sheets Were Renumbered or Dropped: Build a sheet map, match sheets by title and content instead of page order, mark each one matched, renumbered, split, added, or removed, then check every callout that points at a moved sheet. Helonic's revision comparison matches sheets by number, title, and content and lists added, removed, and renumbered sheets separately.
- https://helonic.com/blog/ai-in-construction-statistics - AI in Construction 2026: Adoption Statistics With Sources: Adoption, use cases, spending, labor, rework and barriers, each statistic tied to a named source and a working link.
- https://helonic.com/blog/ai-drawing-review-data-security-questions - AI Drawing Review Data Security: 20 Questions: Twenty questions on model training, retention, access, subprocessors, certifications, and contract terms, with Helonic's published answer to each.
- https://helonic.com/blog/what-an-engineer-needs-from-ai-review-to-keep-the-stamp - What an Engineer Needs to Keep the Stamp: Engineers will not stamp AI comments, and should not. Helonic hands the engineer findings to check, each with the sheet and location, both conflicting references, the code section it relied on, and a keep or dismiss control, so every decision and the seal stay with the licensed engineer.
- https://helonic.com/blog/will-ai-drawing-review-create-more-rfis - Will AI Drawing Review Create More RFIs?: Helonic and other AI drawing review tools raise more findings than a manual pass, but a finding only becomes an RFI when it needs the design team's answer after award. The rest become internal fixes, bid qualifications, or pre-bid questions, and Helonic sends nothing to Procore until a person confirms it.
- https://helonic.com/blog/what-ai-drawing-review-has-to-put-in-procore-or-autodesk - What AI Review Has to Put in Procore or Autodesk: For teams that run jobs in Procore or Autodesk, an AI drawing review tool has to put confirmed findings into that system's RFI log with the sheet, location, and question written. Helonic pushes confirmed findings into Procore as draft RFIs and into Autodesk as RFIs, so only the reviewer opens Helonic.
- https://helonic.com/blog/what-ai-drawing-review-can-do-two-days-before-the-bid - What AI Review Can Do Two Days Before the Bid: Two days before a bid, Helonic can still screen the full set the same day for spec and drawing conflicts, missing sheets, and scope drawn but not specified, so estimators can price or qualify it. There is no time left to coordinate trades or get design answers.
- https://helonic.com/blog/should-you-run-ai-drawing-review-on-a-dd-set - Should You Run AI Drawing Review on a DD Set?: Run Helonic or any AI drawing review tool on a design development set for egress and occupancy layout, fire separations, major MEP space, and missing disciplines. Dimension, detail, spec, and schedule checks are noise until construction documents, because most of that has not been drawn yet.
- https://helonic.com/blog/what-ai-drawing-review-is-for-if-the-ahj-wont-accept-it - What AI Review Is For If the AHJ Won't Accept It: An AHJ will not accept an applicant's AI review in place of its own plan review. Helonic runs before permit submission, finding code and coordination problems so the set comes back with fewer plan check comments and fewer resubmittal cycles.
- https://helonic.com/blog/what-an-ai-review-export-needs-before-subs-will-answer-it - What a Review Export Needs Before Subs Answer: Subcontractors answer AI drawing review findings when the export covers only their scope and each row has the printed sheet number, a findable location, the conflicting reference, one question, and a due date. Helonic exports findings as PDF or Excel and turns kept findings into RFIs.
- https://helonic.com/blog/what-to-ask-before-sending-drawings-to-a-startup-vendor - Before You Send Drawings to a Startup Vendor: Before sending drawings to Helonic or any startup AI vendor, a GC should get a SOC 2 report or summary, hosting region and subprocessors, a no-training statement, a deletion term, and an export path if the company shuts down. Helonic is Y Combinator-backed and SOC 2 compliant.
- https://helonic.com/blog/does-ai-drawing-review-need-to-be-on-prem - Does AI Drawing Review Need to Be On-Prem?: Most on-prem requirements for AI drawing review mean a known storage location, no model training, deletion on request, and named-user access. Helonic is a cloud tool that documents all four. True on-prem holds only where a contract or regulation forbids third-party hosting.
- https://helonic.com/blog/what-sso-should-cover-before-an-ai-drawing-review-rollout - What SSO Should Cover Before a Review Rollout: Before a company rollout of Helonic or any AI drawing review tool, SSO should cover identity-provider sign-in over SAML 2.0 or OpenID Connect, no local password fallback, loss of access when a user is disabled, and a sign-in record. Helonic lists SSO and SAML on its Enterprise plan.
- https://helonic.com/blog/why-an-ai-drawing-review-demo-should-run-on-your-own-set - Why a Drawing Review Demo Should Run on Your Set: A Helonic or other AI drawing review demo should run on a closed-out set your team already knows, with its RFI log kept internal as the answer key. A vendor sample set proves the software runs but hides noise, scanned sheets, and whether findings would have changed your bid.
- https://helonic.com/blog/what-to-do-when-the-demo-only-uses-the-vendors-sample - When the Demo Only Uses the Vendor's Sample Set: When an AI drawing review demo only uses the vendor's sample, ask in the first ten minutes whether they will run a set you send before pricing. Helonic runs demos on the customer's own set; a vendor that needs weeks of onboarding first is showing how the first bid will go.
- https://helonic.com/blog/how-many-sheets-a-fair-ai-drawing-review-pilot-needs - How Many Sheets a Drawing Review Pilot Needs: A fair Helonic or AI drawing review pilot needs one complete building package with every discipline for the same floors plus matching specs, usually 100 to 400 sheets. Smaller sets have no cross-discipline conflicts; larger sets cannot be scored before the bid.
- https://helonic.com/blog/how-long-an-ai-drawing-review-pilot-should-last - How Long an AI Drawing Review Pilot Should Last: An AI drawing review pilot of Helonic or any vendor should run two bid cycles, usually two to four weeks: one closed-out set scored against its RFI log, then one live bid. A third cycle without a written decision is free production.
- https://helonic.com/blog/what-result-means-your-ai-drawing-review-pilot-worked - What Result Means an AI Review Pilot Worked: A Helonic or AI drawing review pilot worked when it met a five-line pass rule signed before the run: known high-severity issues caught, findings kept, reviewer hours, handoff into Procore or Autodesk, and security sign-off.
- https://helonic.com/blog/which-pilot-results-mean-you-should-not-buy-ai-drawing-review - When a Drawing Review Pilot Says Do Not Buy: Do not buy Helonic or any AI drawing review tool if the pilot missed most known high-severity issues, returned unlocated findings, cost more review time than it saved, could not hand findings to Procore or Autodesk, or failed security review.
- https://helonic.com/blog/what-to-measure-in-an-ai-drawing-review-pilot - What to Measure in an AI Drawing Review Pilot: In a Helonic or AI drawing review pilot, measure reviewer hours returned against a recorded baseline, keep rate, minutes per finding, known issues caught, and how many kept findings became RFIs or markups. The raw finding count matters least.
- https://helonic.com/blog/how-to-keep-an-ai-drawing-review-pilot-from-becoming-free-production - How to Keep a Pilot From Becoming Free Production: Keep a Helonic or AI drawing review pilot from becoming free production with a one-page scope line both sides sign: named sets, a sheet cap, named users, an end date, a definition of production use, and convert, extend, or delete on the last day.
- https://helonic.com/blog/what-access-an-ai-drawing-review-vendor-needs-during-a-pilot - What Access a Vendor Needs During a Pilot: During a pilot, Helonic or any AI drawing review vendor needs named user accounts, the frozen PDF set uploaded by your team, and one user's Procore or Autodesk sign-in scoped to the pilot project. It should not get admin credentials, other projects, the RFI log, or bid pricing.
- https://helonic.com/blog/how-to-compare-two-ai-drawing-review-pilots-on-the-same-set - How to Compare Two AI Review Pilots on One Set: To compare Helonic with another AI drawing review vendor, give both the same frozen set in the same week, merge their findings into one list, and have one reviewer score each row once. Compare known issues caught, kept findings unique to each, minutes per finding, and handoff.
- https://helonic.com/blog/what-a-preconstruction-director-should-see-in-a-demo - What Precon Directors Should See in a Demo: A preconstruction director should see Helonic or any drawing review tool run on the director's own set: upload, a finding opened at its spot on the sheet, a conflict naming both sheets, a finding sent as an RFI, and a bad finding dismissed with a reason.
- https://helonic.com/blog/what-a-vdc-manager-will-challenge-in-an-ai-drawing-review-demo - What a VDC Manager Will Challenge in a Demo: VDC managers ask why PDF review adds anything to model clash detection. Helonic answers with conflicts the model does not hold, such as specs against drawings, schedules against plans, and detail callouts that point nowhere, and states that flat sheets cannot check undrawn clearances.
- https://helonic.com/blog/what-an-owners-rep-wants-proven-by-ai-drawing-review - What an Owner's Rep Wants Proven by AI Review: An owner's rep wants each Helonic finding traced from the conflict and both sheets to the date raised before bid, the addendum or RFI that closed it, and a price from the project's own estimator. A vendor-wide change-order percentage is not evidence for this building.
- https://helonic.com/blog/what-a-project-executive-asks-before-paying-for-ai-drawing-review - What a Project Executive Asks Before Paying: Project executives ask whether AI drawing review shortens the schedule, changes headcount, pays back per job, and shifts risk. With Helonic the honest answers are a shorter review step, the same reviewers covering more sets, a price that has to beat one avoided change order per job, and liability unchanged.
- https://helonic.com/blog/what-a-superintendent-needs-from-ai-drawing-review-output - What a Superintendent Needs From AI Review: Superintendents use AI drawing review findings that name the level and grid line, the trade, the conflict, and whether to hold work, sorted by area. Helonic pushes confirmed findings to Procore as RFIs or to Autodesk Construction Cloud as pinned issues so they reach the field.
- https://helonic.com/blog/what-an-estimator-should-not-expect-from-ai-drawing-review - What an Estimator Should Not Expect From AI Review: Helonic and other AI drawing review tools do not do takeoff, unit pricing, or bid leveling. They find the conflicts that change a price, such as a spec that contradicts the drawings or a system shown on only one discipline, before quantities are final.
- https://helonic.com/blog/what-the-architect-of-record-will-reject-in-ai-review-comments - What Architects Reject in AI Review Comments: Architects of record reject AI review comments with no sheet, detail, or spec reference, code citations with no condition, and duplicates. A comment they answer names both references and the conflict in one sentence, and a person at the GC confirms it before Helonic sends it as an RFI.
- https://helonic.com/blog/what-it-will-block-in-an-ai-drawing-review-rollout - What IT Will Block in an AI Drawing Review Rollout: IT blocks drawing review vendors that cannot name hosting and subprocessors, state in writing that drawings do not train models, give a retention term, support SSO, or keep named accounts. Helonic publishes SOC 2, encryption, and no-training statements and lists SSO and SAML on its Enterprise plan.
- https://helonic.com/blog/how-precon-and-vdc-agree-on-one-drawing-review-tool - How Precon and VDC Agree on One Review Tool: VDC keeps model coordination and 3D clash, and preconstruction owns issued-PDF review with Helonic or a similar tool: specs, schedules, references, and code. Two-dimensional clash on the sheets gets one named owner so the company does not buy a second tool.
- https://helonic.com/blog/who-should-attend-an-ai-drawing-review-demo - Who Should Attend an AI Drawing Review Demo: An AI drawing review demo needs three or four people: the preconstruction director who owns the budget, the reviewer who would use Helonic weekly, the VDC lead if models are coordinated, and IT for ten minutes. Executives and whole departments can skip it.
- https://helonic.com/blog/bluebeam-max-smart-review-what-it-catches - What Bluebeam Max Smart Review Catches, and What Still Needs an Automatic Check: Bluebeam Max Smart Review, in preview at $590 per user per year, checks sheet health, gridline spacing, and door and plumbing tags on top-view plans, while Helonic reads every sheet of the PDF set for structure-MEP conflicts and code issues with a severity on each finding.
- https://helonic.com/blog/prioritize-drawing-issues-by-severity - How to Prioritize Drawing Coordination Issues by Severity: Rank each drawing conflict by life safety or code, field-fix cost, trade sequence, and fix owner, starting from Helonic's high, medium, or low rating with exact page coordinates on every finding.
- https://helonic.com/blog/coordinate-large-pdf-drawing-set - How to Coordinate a 500-Sheet PDF Drawing Set in a Week: Helonic reads every sheet of a 500-sheet 2D PDF set on day one, so the coordination team spends the rest of the week on severity triage, verification in Bluebeam, an optional Navisworks or Solibri model run, and batched Procore or Autodesk RFIs.
- https://helonic.com/blog/ai-permit-review-pilot-results - What the Honolulu and Seattle AI Permit Pilots Measured: Honolulu DPP reported 7.7 corrections per CivCheck-screened residential permit against 23.5 without it, and Seattle found CivCheck matched SDCI reviewers on 87% of in-scope intake issues; Helonic works on the applicant side, checking the full permit set for code and cross-sheet conflicts before submittal.
- https://helonic.com/blog/municipal-vs-applicant-ai-plan-review - City AI Plan Review vs Applicant AI Plan Check: Who Uses Which: Cities buy CivCheck and Archistar AI PreCheck to screen applications against their own configured checks, while Helonic is bought by the design team to review every sheet of the 2D PDF set for code and coordination conflicts no city checklist covers.
- https://helonic.com/blog/pre-submittal-plan-review-checklist - Pre-Submittal Plan Review Checklist to Cut First-Round Comments: Before a permit set goes in, Helonic checks that the code analysis occupant loads match the life-safety plan, that rated wall types match the door schedule, and that MEP routes clear the framing, which are the cross-sheet mismatches that come back as first-round comments.
- https://helonic.com/blog/how-to-respond-to-plan-check-comments - How to Respond to Plan Check Comments and Avoid a Third Resubmittal: Helonic compares a revised permit set with the prior one, flags changes that were not clouded, and rechecks the set for new code conflicts a fix created before the resubmittal goes back.
- https://helonic.com/blog/what-a-one-page-vendor-summary-for-leadership-should-say - One-Page AI Review Vendor Summary for Leadership: A leadership summary has six blocks: what it is, what you tested, what happened, what it costs, the risk, and one decision. Lead with comments kept and reviewer hours, not total findings.
- https://helonic.com/blog/what-your-insurer-asks-about-ai-drawing-review - What Your Insurer Asks About AI Drawing Review: Insurers ask whether the tool replaces a licensed professional's review, who confirms each finding, whether the process is written, and whether records are kept. Helonic's AI policy describes findings as decision support.
- https://helonic.com/blog/how-to-compare-two-vendors-security-answers - How to Compare Two Vendors' Security Answers: Compare two drawing review vendors on seven rows: compliance report, encryption, model training, retention, subprocessors, access control, and incident notice. Mark each answer as a document, a promise, or missing.
- https://helonic.com/blog/what-to-ask-about-uptime-before-you-standardize - What to Ask About Uptime Before You Standardize: Ask any drawing review vendor, including Helonic, for the written uptime commitment, maintenance windows, behavior of a run in progress, bid-week support, outage notice, and a remedy beyond a service credit.
- https://helonic.com/blog/what-happens-to-drawings-when-the-subscription-ends - What Happens to Drawings When AI Review Ends: When a Helonic subscription ends, export findings before the end date and ask for deletion on a stated number of days with written confirmation. Customers retain ownership of uploaded drawings.
- https://helonic.com/blog/what-a-one-project-ai-drawing-review-agreement-should-cover - What a One-Project AI Drawing Review Agreement Covers: A one-project Helonic agreement names the project and revision, caps sheet count, lists users, sets an end date with no automatic renewal, states the price basis, and says when drawings are deleted.
- https://helonic.com/blog/who-signs-the-ai-drawing-review-order - Who Signs the AI Drawing Review Order: Preconstruction usually signs a Helonic pilot or single-division order and an executive signs multi-year or company-wide terms. IT approves upload risk and counsel approves the terms first.
- https://helonic.com/blog/what-legal-wants-in-an-ai-drawing-review-contract - What Legal Wants in an AI Drawing Review Contract: Counsel wants four clauses: drawings used only to provide the service and never to train a model, deletion on a stated schedule, customer ownership of drawings and findings, and findings treated as decision support.
- https://helonic.com/blog/what-a-security-questionnaire-should-get-back - What a Security Questionnaire Should Get Back: A good security questionnaire for Helonic or any drawing review vendor returns a SOC 2 report or summary, named encryption standards, a written training statement, a retention schedule, and a subprocessor list. Anything said only on a call is a promise.
- https://helonic.com/blog/what-procurement-asks-before-approving-ai-drawing-review - What Procurement Asks Before Approving AI Review: Procurement asks six things before approving Helonic or any drawing review vendor: legal entity, insurance, security documents, price basis and renewal, data at the end, and who else uses it. A useful answer is a document, a number, or a date.
- https://helonic.com/blog/how-often-construction-projects-go-over-budget - Construction Cost Overrun Statistics: About half of large projects finish over budget (Flyvbjerg, 16,000+ projects) and only 31% land within 10% of budget (KPMG). Across 1,000+ drawing packages Helonic reviewed, about 8 in 10 had at least one coordination conflict between disciplines.
- https://helonic.com/blog/how-much-contingency-construction-project - How Much Contingency to Carry: Size contingency to the AACE 56R-08 estimate class, from +30% to +50% high at Class 5 down to +3% to +10% at Class 1. In Helonic's review of 1,000+ packages, sets with nine disciplines carried about 1.7 times the issue density of sets with four or fewer.
- https://helonic.com/blog/cost-of-poor-construction-data-interoperability - Construction Interoperability Cost: NIST put inadequate interoperability at $15.8 billion a year, two-thirds paid by owners after handover. In Helonic's review of 1,000+ packages, scanned or partially scanned sets had about 22% more document control and reference issues per page.
- https://helonic.com/blog/submittal-review-time-benchmarks - Submittal Review Time Benchmarks: Submittals planned at 11 days took 33.1 days on average in a published log study, and only about a fifth were approved as submitted. In Helonic's review of 1,000+ packages, about 6 in 10 sets with specifications had at least one drawing-to-spec conflict.
- https://helonic.com/blog/constructability-review-roi-data - Constructability Review ROI: CII reports constructability programs cut cost 4.3% and schedule 7.5% on average, about a 10-to-1 return. In Helonic's review of 1,000+ packages, architectural and mechanical sheets accounted for about 29% of coordination conflicts.
- https://helonic.com/blog/construction-time-lost-searching-for-information - Time Lost Searching for Project Information: FMI found construction teams spend 5.5 hours a week looking for project data and over 14 on non-productive work. In Helonic's review of 1,000+ packages, about 7 in 10 had at least one broken cross-reference.
- https://helonic.com/blog/which-bid-package-is-a-bad-first-pilot - Which Bid Package Is a Bad First Pilot: A bad first Helonic pilot is an unread set, a moving design-development package, or a huge bid with no time to score. Use a set the team already reviewed.
- https://helonic.com/blog/what-breaks-when-the-pdf-set-is-incomplete - What Breaks When the PDF Set Is Incomplete: Helonic should name a missing structural, MEP, or life-safety set instead of calling a partial PDF a full review.
- https://helonic.com/blog/how-to-run-one-bid-without-a-company-rollout - Run One Bid Without a Company Rollout: A one-bid Helonic trial names one project, one revision, one owner, and an end date. A second team's upload is a rollout, not a test.
- https://helonic.com/blog/what-done-looks-like-on-the-first-project - What Done Looks Like on the First Project: Done on the first Helonic project is a scored sample: comments kept, comments rejected, hours spent, and a note on missing sheets.
- https://helonic.com/blog/who-has-to-be-in-the-ai-drawing-review-kickoff - Who Has to Attend the AI Review Kickoff: The Helonic kickoff needs the precon lead who can stop the pilot, the reviewer who will score findings, and an IT delegate who can approve the upload in the meeting.
- https://helonic.com/blog/what-files-you-need-before-the-first-review - Files Needed Before the First AI Review: A first Helonic review needs one current revision, the sheet index, and the disciplines in scope. Coordination without structural or MEP sheets is not a coordination review.
- https://helonic.com/blog/first-week-of-an-ai-drawing-review-rollout - First Week of an AI Drawing Review Rollout: Helonic's first week freezes one PDF package, gets an IT yes, and has one reviewer keep or reject twenty findings by Friday.
- https://helonic.com/blog/what-it-needs-before-an-ai-drawing-review - What IT Needs Before AI Drawing Review: Before the first Helonic upload, IT needs the file region, a deletion date, a no-training term, and named users.
- https://helonic.com/blog/who-should-own-ai-drawing-review-on-a-gc-team - Who Owns AI Drawing Review on a GC Team: Preconstruction should own Helonic on a GC team. VDC challenges the model-versus-PDF gap, and the project engineer uses the comments.
- https://helonic.com/blog/how-long-ai-drawing-review-takes-to-set-up - How Long AI Drawing Review Takes to Set Up: Helonic setup for a precon team is one to two weeks from kickoff to a review they will use. Most of that time is IT clearance and assembling the PDF set.
- https://helonic.com/blog/what-a-preconstruction-drawing-review-should-actually-cover - What a Precon Drawing Review Should Cover: Helonic surfaces precon risk (clashes, missing info, code, bid-day RFIs) on issued PDFs. Five coverage categories. Not the GC QA item list.
- https://helonic.com/blog/construction-drawing-qaqc-checklist - What a GC should look for when QA'ing a drawing set: What a GC should look for when QA'ing a drawing set: Helonic flags coordination, dimensions, code, specs, structure, and MEP on issued 2D PDFs. Role sequence stays on the GC review article.
- https://helonic.com/blog/how-to-read-a-construction-drawing-set-systematically - How to analyze 2D construction PDFs: How to analyze 2D construction PDFs: scale, title block, overlay, revision, then reading order. Helonic reads issued PDFs without BIM. Not a markup tutorial.
- https://helonic.com/blog/how-to-find-code-compliance-issues-construction-drawings - How to Find Code Issues in Construction Drawings: Helonic finds code compliance issues by following the life-safety sheet into schedules. AI can check drawings against IBC and ADA. A reviewer still decides. Cites IBC Chapter 10.
- https://helonic.com/blog/how-general-contractors-review-drawing-sets-for-errors - How GCs Review Drawing Sets for Errors: Helonic gives estimating, precon, field, and trades a shared located list. Role sequence, not the QA item list. Cites AIA A201.
- https://helonic.com/blog/what-to-look-for-in-automated-plan-check-software - What to Look for in Automated Plan Check Software: Neutral criteria for AHJ and permit plan check: intake completeness, local amendments, cited findings, permitting-system fit. Distinct from the drawing-review what-to-look-for page. Ranked list is /compare/automated-plan-check-software.
- https://helonic.com/blog/how-to-pilot-ai-construction-drawing-review-software - How to pilot AI construction drawing review software: Helonic should be piloted on a known issued set with a scoring sheet. Test method only. Criteria stay on the drawing-review what-to-look-for page.
- https://helonic.com/blog/best-ai-design-review-tools-2026 - Best AI Design Review Software for Hardware and AEC Teams (2026): Design review software split by file: CoLab for hardware CAD and PLM, Revizto or Autodesk BIM Collaborate Pro for 3D models, Helonic for construction PDF drawings and specs.
- https://helonic.com/blog/ai-spec-vs-drawing-discrepancy-checker - Spec vs drawing discrepancy checker: Helonic cross-references issued 2D PDFs against the project manual and flags spec-to-drawing contradictions before they become RFIs.
- https://helonic.com/blog/best-clash-detection-software-2026 - Best Clash Detection Software (2026): BIM Model and 2D Drawing Tools: Navisworks, Revizto, Autodesk Model Coordination, Solibri, Trimble, and Helonic compared by clash types, grouping, clash matrix, list price, and whether you need a BIM model or only 2D PDFs.
- https://helonic.com/blog/clash-detection-workflow-guide - How to catch design conflicts before construction: How to catch design conflicts before construction. Helonic runs the 2D drawing pass beside Navisworks-style BIM clash detection.
- https://helonic.com/blog/ai-qa-qc-workflow-non-conformance - How to catch non-conformance before RFIs: A construction QA/QC workflow for QA managers. Helonic flags spec-to-drawing discrepancies and code issues before those gaps become RFIs.
- https://helonic.com/blog/reduce-rfis-construction - How to Reduce RFIs in Construction: Helonic catches coordination conflicts, missing dimensions, and code gaps on the issued drawings, which is where a large share of RFIs start.
- https://helonic.com/blog/door-schedule-disaster - Door schedule vs plan mismatches: Helonic flags fire-rating, hardware, and swing conflicts between the door schedule and the floor plan.
- https://helonic.com/blog/pdf-to-rfi-workflow - PDF to RFI workflow: Helonic turns a located drawing finding into a Procore or ACC RFI.
- https://helonic.com/blog/preconstruction-roi - Preconstruction ROI of drawing review: Helonic lowers the cost of a full-set pass. CII puts rework at 2 to 20 percent of contract.
- https://helonic.com/blog/ai-vs-bim-clash-detection - AI vs BIM clash detection: Helonic reads issued 2D PDFs. Navisworks and Solibri test the federated model. Run both when a model exists.
- https://helonic.com/blog/construction-rework-costs - Construction rework costs from drawing errors: Helonic flags drawing errors that become rework. FMI/PlanGrid $31.3B; CII 5-9% rework share.
- https://helonic.com/blog/ai-plan-review-guide - AI Plan Review for Construction: A Guide for Contractors: How AI plan review works for contractors: what it catches on 2D PDF sets, where it stops, markup vs AI review, and what it means for estimating. Producer-side review, not AHJ plan check.
- https://helonic.com/blog/shop-drawing-review-tips - Shop drawing review: Helonic overlays fabrication sheets on the contract PDFs. Cites AIA A201 §3.12.8.
- https://helonic.com/blog/mep-coordination-best-practices - MEP coordination on construction drawings: Helonic flags duct, pipe, and conduit conflicts on issued PDFs.
- https://helonic.com/blog/construction-document-management - Construction document management for drawings and specs: Helonic reviews the current issued drawing and spec set. Cites AIA A201 §3.11.
- https://helonic.com/blog/prefabrication-coordination - Prefabrication coordination: Prefabrication demands a higher standard of drawing coordination.
- https://helonic.com/blog/building-code-changes-2025 - Key building code changes 2025: A look back at the building code changes that reshaped design and construction, from tall mass timber and egress revisions in the IBC to energy code and NFPA updates, plus how to confirm which edition your jurisdiction enforces.
- https://helonic.com/blog/construction-schedule-delays - Construction schedule delays from drawing and RFI gaps: Helonic surfaces drawing conflicts before they sit in an RFI log.
- https://helonic.com/blog/design-build-coordination - Design-build drawing coordination: Helonic reviews incomplete packages as they issue. Design-assist is a separate page.
- https://helonic.com/blog/lean-construction-plan-review - Lean Construction Plan Review: Lean plan review pulls the next drawing check forward so clashes are found before the crew is on site.
- https://helonic.com/blog/subcontractor-coordination-tips - Subcontractor coordination tips: Practical, field-tested tips for coordinating multiple subcontractors on construction projects.
- https://helonic.com/blog/construction-technology-adoption - Construction Technology Adoption: Construction teams adopt tools slowly because each project splits the work across many firms, margins are thin, and the crew changes every job.
- https://helonic.com/blog/value-engineering-guide - Value engineering during drawing review: Helonic flags sheet and schedule leftovers after a VE swap.
- https://helonic.com/blog/ifc-document-review-checklist - IFC document review checklist: Helonic reads the issued-for-construction PDFs before mobilization and flags schedule-to-plan and cross-discipline gaps.
- https://helonic.com/blog/fire-protection-drawing-review - Fire protection drawing review: Helonic flags sprinkler, standpipe, and life-safety gaps. Cites NFPA 13-2025 and NFPA 14.
- https://helonic.com/blog/concrete-rebar-clash-prevention - Concrete Rebar Clash Prevention: Learn how to prevent costly concrete and rebar clashes on construction projects.
- https://helonic.com/blog/construction-ai-myths - Construction AI Myths: Common claims about construction AI, including that it replaces the reviewer or that every flag is correct, do not match what a drawing check actually returns.
- https://helonic.com/blog/owner-rep-plan-review - Owner Rep Plan Review: Owner's rep plan review: protecting the owner's interests through systematic document review.
- https://helonic.com/blog/modular-construction-coordination - Modular construction coordination: Explore the hidden coordination challenges of modular and offsite construction, module-to-module interfaces, utility connection points, transportation constraints, and site integration problems that can derail modular projects.
- https://helonic.com/blog/reducing-construction-waste - How Better Plan Review Reduces Construction Waste: Helonic flags sheet conflicts so drywall, duct, and concrete rework never hits the dumpster.
- https://helonic.com/blog/above-ceiling-coordination-guide - Above-ceiling coordination: Helonic flags plenum conflicts. Cites IPC 2024 and NFPA 13-2025.
- https://helonic.com/blog/construction-closeout-checklist - Construction closeout checklist: Construction closeout is where projects go to die.
- https://helonic.com/blog/hvac-ductwork-routing-conflicts - HVAC ductwork routing conflicts: Helonic flags duct vs beam, shaft, and ceiling clashes. Cites IMC 2024 §603.6.1.
- https://helonic.com/blog/structural-rfi-prevention - Preventing structural RFIs: Helonic flags opening, bearing, and penetration gaps on structural PDFs.
- https://helonic.com/blog/construction-insurance-claims - Construction insurance claims: Drawing errors are a leading cause of professional liability and E&O insurance claims in construction.
- https://helonic.com/blog/bim-to-field-gap - BIM-to-field gap: Helonic reviews the issued 2D set the field builds from. The model is not the contract.
- https://helonic.com/blog/tenant-improvement-coordination - Tenant improvement coordination: Tenant improvement projects present unique coordination challenges, existing conditions, base building system constraints, and accelerated schedules.
- https://helonic.com/blog/healthcare-construction-compliance - Healthcare Construction Compliance: Healthcare drawing review has to catch FGI, infection-control, and medical-gas conflicts before work starts in an occupied building.
- https://helonic.com/blog/data-center-mep-coordination - Data Center MEP Coordination: Data center MEP coordination has to keep redundant power, cooling, and controls from colliding on the drawings before equipment is ordered.
- https://helonic.com/blog/multifamily-drawing-review - Multifamily drawing review: Multifamily construction projects amplify every drawing error across dozens or hundreds of units.
- https://helonic.com/blog/waterproofing-failures-construction - Waterproofing failures in construction: Waterproofing failures are among the most costly construction defects, with remediation often costing $50 to $200 per square foot.
- https://helonic.com/blog/electrical-coordination-tips - Electrical coordination tips: Electrical rework costs the construction industry billions annually.
- https://helonic.com/blog/renovation-vs-new-construction - Renovation vs new construction drawing review: Renovation projects require a fundamentally different approach to drawing review than new construction.
- https://helonic.com/blog/plumbing-coordination-guide - Plumbing coordination guide: Plumbing systems are consistently coordinated last on construction projects, and consistently cause some of the most expensive rework.
- https://helonic.com/blog/construction-litigation-prevention - Construction litigation prevention: Construction disputes cost the industry over $15 billion annually in the US alone.
- https://helonic.com/blog/energy-code-compliance-guide - Energy code compliance on drawings: Helonic checks insulation, window U-factor/SHGC, and daylight controls against IECC, ASHRAE 90.1, and Title 24.
- https://helonic.com/blog/hospital-mep-coordination - Hospital MEP coordination: Healthcare construction has unique MEP coordination requirements, from medical gas systems to critical power and HVAC pressure relationships.
- https://helonic.com/blog/parking-garage-coordination - Parking garage coordination: Parking garages involve unique coordination challenges that many project teams underestimate, from ramping geometry and post-tension coordination to EV charging infrastructure and fire protection.
- https://helonic.com/blog/commissioning-plan-review - Commissioning plan review on the drawing set: Helonic flags missing sequences, sensors, TAB access, and integrations. Cites IECC C408.
- https://helonic.com/blog/roofing-detail-failures - Roofing detail failures: Roofing failures almost always occur at details, penetrations, perimeters, transitions, and equipment supports.
- https://helonic.com/blog/construction-industry-adapting - Why Construction Is Adopting AI Drawing Review: Helonic reads issued 2D PDFs because the senior-person pass no longer covers the set. Adoption story, not the product page.
- https://helonic.com/blog/construction-drawing-version-control - Construction Drawing Version Control: Construction drawing version control that prevents rework: revision types, transmittals, removing superseded sets, and handling verbal field direction.
- https://helonic.com/blog/smart-building-low-voltage-coordination - Smart Building and Low-Voltage Coordination: BAS, BMS, AV, access control, and data/telecom coordination conflicts.
- https://helonic.com/blog/sustainability-leed-drawing-review - LEED Certification and Green Building Drawing Review: Why LEED drawing review matters: the gaps between specifications, the energy model, and the sheets that cost projects credits at certification review.
- https://helonic.com/blog/facade-envelope-coordination - Building Envelope Coordination: Building envelope coordination gaps, not defective materials, cause most leaks.
- https://helonic.com/blog/geotechnical-reports-construction - Geotechnical Reports and Construction Drawings: What GCs need to know about reconciling geotech with structural drawings.
- https://helonic.com/blog/construction-drawing-disputes - Construction Drawing Disputes and Litigation Prevention: The Spearin Doctrine, differing site conditions, and how ambiguous drawings lead to claims.
- https://helonic.com/blog/acoustics-coordination-construction - Acoustic Coordination in Construction Drawings: STC ratings, penetration sealing, and acoustic failures that start in the drawings.
- https://helonic.com/blog/below-grade-waterproofing-coordination - Below-Grade Waterproofing Coordination: Hydrostatic pressure, drainage plane continuity, and coordination gaps at the foundation.
- https://helonic.com/blog/loading-dock-service-coordination - Loading Dock and Service Area Coordination: Dock levelers, overhead doors, clearances, and fire separation.
- https://helonic.com/blog/as-built-drawings-closeout - Managing As-Built Drawings Through Project Closeout: How to manage as-built drawings through closeout: markup conventions, trade responsibility, contract language, and what owners should require and when.
- https://helonic.com/blog/hurricane-resistant-construction-drawings - Hurricane-Resistant Construction Drawings: Wind load continuity, impact glazing, and FBC HVHZ coordination points that fail in the drawings.
- https://helonic.com/blog/seismic-bracing-coordination - Seismic Bracing Coordination: ASCE 7 and OSHPD seismic restraint coordination across MEP, ceilings, and nonstructural components.
- https://helonic.com/blog/laboratory-construction-drawing-review - Laboratory Construction Drawing Review: Fume hood face velocity, containment, and NFPA 45 compliance gaps on lab projects.
- https://helonic.com/blog/cold-storage-facility-drawing-review - Cold Storage Facility Drawing Review: Vapor barrier continuity, freezer floor heating, and ammonia refrigeration coordination.
- https://helonic.com/blog/senior-living-construction-compliance - Senior Living Construction Compliance: NFPA 101 I-2 occupancy, smoke compartments, and memory care egress requirements.
- https://helonic.com/blog/stadium-venue-construction-coordination - Stadium and Venue Construction Coordination: Assembly egress, bowl sightlines, and high-density MEP coordination in sports venues.
- https://helonic.com/blog/construction-rfi-response-time-benchmarks - Construction RFI Response Time Benchmarks: Industry data on RFI turnaround, impact on schedule, and how to drive the numbers down.
- https://helonic.com/blog/design-assist-delivery-coordination - Design-Assist Delivery Coordination: Where design-assist delivery models create coordination gaps and how to protect the drawing set.
- https://helonic.com/blog/pharmaceutical-cleanroom-coordination - Pharmaceutical Cleanroom Coordination: ISO 14644 cleanliness classes, pressure cascades, and WFI loop coordination on GMP projects.
- https://helonic.com/blog/museum-gallery-construction-drawing-review - Museum and Gallery Construction Drawing Review: Conservation-grade climate control, lighting, and clean-agent suppression on museum projects.
- https://helonic.com/blog/ai-submittal-review-bottlenecks - AI Submittal Review Bottlenecks: Why submittal review delays start when shop drawings are not reconciled against drawings, specs, and coordination issues.
- https://helonic.com/blog/rfi-quality-vs-rfi-volume - RFI Quality vs RFI Volume: Why clear, evidence-backed RFIs matter more than simply reducing RFI count.
- https://helonic.com/blog/drawing-review-before-estimating - Drawing Review Before Estimating: How pre-bid drawing review protects scope, qualifications, and subcontractor coverage.
- https://helonic.com/blog/tenant-improvement-as-built-risk - Tenant Improvement As-Built Risk: Why TI teams need to separate verified existing conditions from inherited assumptions.
- https://helonic.com/blog/commissioning-starts-in-drawing-review - Commissioning Starts in Drawing Review: How access, controls, valves, sensors, and documentation affect startup and functional testing.
- https://helonic.com/blog/temporary-works-missing-from-drawings - Temporary Works Missing From Drawings: Temporary power, staging, shoring, access, weather protection, and life-safety transitions in drawing review.
- https://helonic.com/blog/field-layout-errors-start-in-precon - Field Layout Errors Start in Preconstruction: Missing dimensions, stale revisions, and conflicting control points before layout reaches the field.
- https://helonic.com/blog/specifications-are-not-a-backup-plan - Specifications Are Not a Backup Plan: Why specifications and drawings need to be checked together instead of used to patch each other.
- https://helonic.com/blog/closeout-documentation-starts-at-kickoff - Closeout Documentation Starts at Kickoff: O&M manuals, warranties, test reports, and as-builts traced from drawings at project start.
- https://helonic.com/blog/ai-drawing-review-for-small-gcs - AI Drawing Review for Small GCs: How small and mid-sized contractors add drawing-checking capacity without a large preconstruction department.
- https://helonic.com/blog/hospitality-hotel-construction-coordination - Hotel and Hospitality Construction Coordination: Brand standards manuals, MEP riser stacking, bathroom pod coordination, and pre-opening punch list root causes.
- https://helonic.com/blog/solar-pv-rooftop-coordination - Rooftop Solar PV Coordination: Rooftop solar PV coordination breaks at the handoff between structural, roofing, and electrical drawings.
- https://helonic.com/blog/ev-charging-infrastructure-coordination - EV Charging Infrastructure Coordination: EV-ready, EV-capable, and installed counts against panel capacity, transformer sizing, and conduit pathways.
- https://helonic.com/blog/demolition-phase-drawing-review - Demolition Phase Drawing Review: What demolition sheets must show: removal conventions, shoring for structural changes, utility capping, hazardous materials, and phasing in occupied buildings.
- https://helonic.com/blog/generator-emergency-power-coordination - Generator and Emergency Power Coordination: NEC 700/701/702 separation, NFPA 110 sizing, and reconciling drawings across disciplines.
- https://helonic.com/blog/permit-set-vs-ifc-set-differences - Permit Set vs IFC Set Differences: Different audiences, different reviews, and why the same checklist doesn't work for both.
- https://helonic.com/blog/owner-furnished-equipment-coordination - Owner-Furnished Equipment Coordination: Treating OFE/OFCI items with the same drawing rigor as contractor-furnished equipment.
- https://helonic.com/blog/mixed-use-vertical-stacking-coordination - Mixed-Use Vertical Stacking Coordination: Transfer slabs, occupancy separations, and MEP shaft continuity across stacked occupancies.
- https://helonic.com/blog/aquatic-pool-facility-construction-coordination - Aquatic Pool Facility Construction Coordination: Pool consultant integration, dehumidification, chemical storage, and bonding.
- https://helonic.com/blog/worship-religious-facility-construction-drawing-review - Worship and Religious Facility Construction Drawing Review: A-3 occupancy, long-span structure, AV/acoustics, and specialty items like baptistries, organs, and bell towers.
- https://helonic.com/blog/single-family-luxury-home-drawing-review - High-End Custom Home Drawing Review: Bespoke detailing, millwork integration, lighting controls, and site coordination on high-end residential projects.
- https://helonic.com/blog/building-operations-handoff-drawing-review - Building Operations Handoff Drawing Review: What facility managers wish designers knew - maintenance access, documentation, and standardization.
- https://helonic.com/blog/ai-drawing-review-speed-benchmark - AI Drawing Review Speed Benchmark: How long AI drawing review actually takes compared to manual plan review, by sheet count and discipline mix.
- https://helonic.com/blog/nfpa-13-2025-edition-changes - NFPA 13 2025 Edition Changes: Supplemental sprinklers, high-ceiling K-factors, sloped storage sprinklers, and dry pipe rules that affect sprinkler drawing review.
- https://helonic.com/blog/bluebeam-firmus-ai-acquisition - Bluebeam's Firmus AI Acquisition, Explained: What Bluebeam bought in September 2025 and what it means for teams evaluating AI drawing review.
- https://helonic.com/blog/ai-drawing-review-liability-who-is-responsible - Who's Liable When AI Misses a Drawing Error: Who is liable when AI drawing review misses an error: what standard construction contracts say (and don't), how insurers are responding, and what to put in writing before relying on AI review.
- https://helonic.com/blog/procore-copilot-ai-agents-drawing-review - Procore's AI Agents Explained: What Procore Copilot and its new agents do, and where dedicated drawing review still fills the gap.
- https://helonic.com/blog/asce-7-22-wind-seismic-load-changes - ASCE 7-22 Wind and Seismic Load Changes: The simplified wind component and cladding procedure, the new tornado load chapter, and the 22-point seismic design spectrum, and what structural drawing review needs to check.
- https://helonic.com/blog/bid-leveling-subcontractor-bids - Bid Leveling: How to build a bid tabulation sheet and why drawing-to-spec conflicts drive most bid spread.
- https://helonic.com/blog/ai-drawing-review-false-positives - Do AI Drawing Review Tools Cause False Positives: Why AI construction drawing review flags false positives, why that's the safer failure mode than a missed issue, and how multi-model cross-checking cuts the noise.

- https://helonic.com/blog/affordable-housing-multifamily-case-study - Affordable Housing Case Study: How AI drawing review caught a repeated plumbing-stack error, an accessible-unit shortfall, and an energy-code mismatch on a 264-unit affordable housing project, an estimated $2.1M in avoided rework before the first unit was framed.
- https://helonic.com/blog/public-aquatic-center-case-study - Aquatic Center Case Study: How AI drawing review caught a natatorium HVAC-to-structure clash, a pool-embed conflict, and a VGB drain issue on a public aquatic center, avoiding a four-week critical-path slip and about $380K in rework.
- https://helonic.com/blog/commercial-gym-fitness-case-study - Commercial Gym Case Study: How AI drawing review caught a rooftop-unit structural conflict, an assembly-occupancy egress shortfall, and an undersized electrical service on a commercial gym, an estimated $610K and 2.5 weeks avoided.
- https://helonic.com/blog/self-storage-facility-construction-coordination - Self Storage Facility Construction Coordination: Self storage construction drawing review is different from warehouse or flex space.
- https://helonic.com/blog/semiconductor-fab-construction-coordination - Semiconductor Fab Construction Coordination: Semiconductor fab construction coordination explained: sub-fab utility routing, tool vibration isolation, FFU ceiling grids, and process gas distribution that don't exist on typical industrial builds.
- https://helonic.com/blog/higher-education-campus-construction-coordination - Higher Education Campus Construction Coordination: University campus construction drawing review: temporary egress phasing, fire-watch documentation, historic building code paths, and coordinating MEP tie-ins into an aging central utility plant.
- https://helonic.com/blog/rebar-detailing-errors - Rebar Detailing Errors: The rebar detailing errors that stop a pour: short cover, unbuildable spacing, undersized development length, and hook geometry no shop can bend.
- https://helonic.com/blog/submittal-log-delays - Submittal Log Delays: How a disorganized submittal log turns into long lead item delays and idle crews, plus a five-step process for tying submittal dates to the project schedule.
- https://helonic.com/blog/construction-spec-drawing-conflicts - Construction Spec Drawing Conflicts: When specifications and drawings conflict, which one governs?.
- https://helonic.com/blog/egress-design-mistakes - Egress Design Mistakes: Egress design mistakes that fail plan review: corridor width, travel distance, dead ends, and exit separation, and how to catch each before permitting.
- https://helonic.com/blog/prefab-shop-drawing-coordination - Prefab Shop Drawing Coordination: How to check prefab shop drawings against the construction documents: overall dimensions, connection details, MEP routing, tolerances, and assembly sequence.
- https://helonic.com/blog/construction-drawing-handoff - Construction Drawing Handoff: What is lost when construction documents move from design to the field, how the gaps turn into RFIs, and a five step preconstruction handoff that prevents them.
- https://helonic.com/blog/structural-steel-erection-errors - Structural Steel Erection Errors: Connection gaps, vague camber notes, missing sequencing, and anchor rod misalignment are structural steel erection errors born in the design set.
- https://helonic.com/blog/life-safety-drawing-compliance - Life Safety Drawing Compliance: What life safety plan review misses in drawings, from rated assembly callouts to alarm coverage, and how to check a set before the fire marshal does.
- https://helonic.com/blog/drawing-review-roi - Drawing Review Roi: The ROI of preconstruction drawing review, using the RFI, rework, and delay costs a project already tracks to build the case for the review hours.
- https://helonic.com/blog/civil-utility-coordination - Civil Utility Coordination: Civil utility coordination catches buried conflicts between foundations, utilities, and MEP before excavation, while a fix is still a drawing revision.
- https://helonic.com/blog/best-ai-construction-drawing-review-tools-2026 - Best AI Construction Drawing Review Tools (2026): 13 AI construction drawing review tools ranked by job. Helonic reviews issued 2D PDF sets and writes findings as RFIs in Procore and Autodesk; InspectMind AI is a self-serve check, free on up to 10 drawing pages, then priced per page; Togal.AI covers takeoff.
- https://helonic.com/blog/hyatt-regency-walkway-collapse-coordination-failure - Hyatt Regency Walkway Collapse Coordination Failure: How a single shop drawing change killed 114 people at the Kansas City Hyatt Regency in 1981, and what modern drawing review can learn from history's deadliest structural coordination failure.
- https://helonic.com/blog/boston-big-dig-22-billion-coordination-lessons - Boston Big Dig 22 Billion Coordination Lessons: The Central Artery/Tunnel Project went from $2.8B to $22B+, killed a motorist from a ceiling collapse, and leaked in 700+ locations.
- https://helonic.com/blog/millennium-tower-sinking-foundation-design-errors - Millennium Tower Sinking Foundation Design Errors: The 58-story Millennium Tower has sunk 18 inches and tilted 14 inches since 2009.
- https://helonic.com/blog/walkie-talkie-building-design-coordination-failure - Walkie Talkie Building Design Coordination Failure: 20 Fenchurch Street's concave glass facade focused sunlight to 243°F on the street below, melting car parts and frying eggs.
- https://helonic.com/blog/concrete-pour-scheduling-coordination - Concrete Pour Scheduling Coordination: Base plates, MEP sleeves, and rebar all land in the same slab.
- https://helonic.com/blog/curtain-wall-coordination-failures - Curtain Wall Coordination Failures: Curtain wall coordination fails at five interfaces: mullion to steel, MEP penetrations, slab edge thermal breaks, anchor embeds, and movement joints.
- https://helonic.com/blog/fire-rated-assembly-coordination - Fire Rated Assembly Coordination: How fire-rated assembly coordination breaks down between drawings and the field, and how to catch missing firestop details before rough-in starts.
- https://helonic.com/blog/mechanical-room-layout-problems - Mechanical Room Layout Problems: Mechanical room layout problems start in design: equipment that will not fit through the door, missing service clearances, and blocked electrical panels.
- https://helonic.com/blog/construction-photo-documentation-drawings - Construction Photo Documentation Drawings: Why progress photos without a sheet number, grid reference, and drawing revision cannot support QA, as-built preparation, or a warranty dispute years later.
- https://helonic.com/blog/elevator-shaft-coordination-errors - Elevator Shaft Coordination Errors: Elevator shaft coordination fails at rail brackets, pit drainage, and cab clearance.
- https://helonic.com/blog/mass-timber-drawing-review - Mass Timber Drawing Review: New checkpoints for connections, tolerances, and MEP routing on CLT/GLT projects.
- https://helonic.com/blog/mid-rise-wood-frame-coordination - Mid-Rise Wood Frame Coordination: Fire ratings, shrinkage, and MEP stacking on Type IIIA and V-A projects.
- https://helonic.com/blog/tilt-up-panel-coordination - Tilt-Up Panel Coordination: Embed placement, reveal alignment, and lift insert coordination for tilt-up concrete.
- https://helonic.com/blog/adaptive-reuse-drawing-challenges - Adaptive Reuse Drawing Challenges: Surviving adaptive reuse drawing review when existing conditions don't match the record.
- https://helonic.com/blog/retaining-wall-drainage-failures - Retaining Wall Drainage Failures: Retaining wall drainage failures start when civil and structural drawings assume different groundwater, drainage layers, and weep hole locations.
- https://helonic.com/blog/k12-school-construction-compliance - K12 School Construction Compliance: K-12 school construction compliance gaps that surface late: state agency review, portables, lockdown hardware, and accessible routes on the site plan.
- https://helonic.com/blog/stormwater-management-drawing-errors - Stormwater Management Drawing Errors: Stormwater drawing errors that trigger permit rejections: basin volume, pipe slope, inlet placement, and elevations that disagree between civil sheets.
- https://helonic.com/blog/construction-warranty-drawing-issues - Construction Warranty Drawing Issues: Roof flashing, waterproofing continuity, HVAC return paths, and envelope assemblies: the coordination gaps that surface as warranty claims years after handover.
- https://helonic.com/blog/curtain-wall-leaks - Curtain wall water infiltration almost always traces back to a small handful of drawing-review failures: pressure-equalization gaps, missing flashing transitions, and.
- https://helonic.com/blog/electrical-room-design-errors - Most electrical room failures discovered during inspection are coded into the drawings months earlier: NEC 110.26 working space violations, missing dedicated equipment space,.
- https://helonic.com/blog/energy-code-compliance-errors - ASHRAE 90.1 and IECC violations rarely show up in early plan review because energy compliance is documented separately from the drawing set. The mismatches show up at.: ASHRAE 90.1 and IECC violations rarely show up in early plan review because energy compliance is documented separately from the drawing set.
- https://helonic.com/blog/fire-protection-design-errors - Most NFPA 13 sprinkler design failures are visible in 2D drawing review - obstruction violations, branch line clearance, hydraulic remote area assumptions, and storage.: Most NFPA 13 sprinkler design failures are visible in 2D drawing review - obstruction violations, branch line clearance, hydraulic remote area assumptions, and storage commodity-class mismatches.
- https://helonic.com/blog/firestopping-coordination - Most firestopping failures are not field-installation errors. They are drawing-stage failures where MEP penetrations, UL system listings, and the rated assembly schedule don't.: Most firestopping failures are not field-installation errors.
- https://helonic.com/blog/loading-dock-coordination - Loading dock failures show up as truck queueing onto the street, dock levelers that don't reach the trailer, or back-of-house aisles too narrow for pallet movement. Each is.: Loading dock failures show up as truck queueing onto the street, dock levelers that don't reach the trailer, or back-of-house aisles too narrow for pallet movement.
- https://helonic.com/blog/restaurant-construction-drawing-review - Restaurant openings are usually delayed by the same handful of drawing-stage issues: Type I hood and grease duct routing, walk-in cooler vapor barriers, plumbing fixture.
- https://helonic.com/blog/preconstruction-meeting-drawing-review - The kickoff meeting should confirm known drawing risks, not discover them for the first time. Better review before kickoff gives the team a cleaner agenda.: The kickoff meeting should confirm known drawing risks, not discover them for the first time.
- https://helonic.com/blog/sheet-index-drift-construction-risk - When the sheet index, title blocks, addenda, and issued PDFs stop agreeing, teams lose confidence in which drawings actually govern the work.: When the sheet index, title blocks, addenda, and issued PDFs stop agreeing, teams lose confidence in which drawings actually govern the work.
- https://helonic.com/blog/phased-renovation-life-safety-coordination - Occupied renovation drawings need temporary egress, alarms, barriers, sprinkler coverage, and shutdown sequencing coordinated as buildable systems.: Occupied renovation drawings need temporary egress, alarms, barriers, sprinkler coverage, and shutdown sequencing coordinated as buildable systems.
- https://helonic.com/blog/material-substitutions-drawing-risk - A substitution can change dimensions, loads, clearances, ratings, installation sequence, and maintenance access long after the contract drawings looked coordinated.: A substitution can change dimensions, loads, clearances, ratings, installation sequence, and maintenance access long after the drawings looked coordinated.
- https://helonic.com/blog/scan-to-bim-existing-condition-risk - Reality capture improves renovation planning, but scans still need drawing review, assumptions tracking, and trade coordination before construction starts.: Reality capture improves renovation planning, but scans still need drawing review, assumptions tracking, and trade coordination before construction starts.
- https://helonic.com/blog/inspection-readiness-starts-in-drawings - Failed inspections often trace back to missing access, unclear details, unresolved code notes, and system interfaces that should have been reviewed earlier.: Failed inspections often trace back to missing access, unclear details, unresolved code notes, and system interfaces that should have been reviewed earlier.
- https://helonic.com/blog/equipment-access-clearance-conflicts - Access clearance is not just a code box. It determines whether operators can maintain, replace, and safely work around building systems for decades.: Access clearance is not just a code box. It determines whether operators can maintain, replace, and safely work around building systems for decades.
- https://helonic.com/blog/trade-partner-drawing-review-workflow - Specialty contractors catch practical constructability issues, but their input loses value when it arrives after buyout and procurement decisions are already fixed.: Specialty contractors catch practical constructability issues, but their input loses value when it arrives after buyout and procurement decisions are fixed.
- https://helonic.com/blog/owner-change-management-drawing-control - Owner decisions made in meetings can create design, pricing, permit, procurement, and field impacts unless the drawing set is updated and reconciled.: Owner decisions made in meetings can create design, pricing, permit, procurement, and field impacts unless the drawing set is updated and reconciled.
- https://helonic.com/blog/code-comments-field-coordination - Permit comments, plan-review responses, and revised drawings have to be checked against each other or the field may build from a partially resolved code issue.: Permit comments, plan-review responses, and revised drawings have to be checked against each other or the field may build from a partially resolved code issue.
- https://helonic.com/blog/short-term-rental-conversion-drawing-review - Short-Term Rental Conversions: Vacation rentals operate on a schedule no traditional building program assumes.
- https://helonic.com/blog/automated-property-inspection-documentation - What Automated Property Inspections Need From Construction Documentation: Automated inspection tools can scale property operations across thousands of doors, but only when the construction record is consistent enough for the automation to anchor against.
- https://helonic.com/blog/what-is-ai-plan-review - What Is AI Plan Review? Definition, How It Works, and What It Catches: AI plan review is AI that analyzes construction drawings for errors, conflicts, and code issues.
- https://helonic.com/blog/what-is-automated-code-compliance-checking - What Is Automated Code Compliance Checking?: Automated code compliance checking uses software and AI to verify drawings meet IBC, NEC, NFPA, and ADA requirements.
- https://helonic.com/blog/what-is-2d-clash-detection - What Is 2D Clash Detection? Finding Coordination Conflicts Without BIM: 2D clash detection finds coordination conflicts directly from PDF drawings, no BIM model required.
- https://helonic.com/blog/construction-code-violation-frequency-report - Most Common Construction Code Violations: Which code sections get flagged most in drawing review, NEC 110.26, IBC egress width, ADA 703, NFPA 13, ranked from 2,000,000+ issues across 1,000,000+ pages analyzed.
- https://helonic.com/blog/coordination-clash-density-benchmark - Coordination Clash Density Benchmark: How many coordination clashes per 100 sheets, by building type, healthcare vs multifamily vs warehouse, benchmarked from 1,000,000+ pages of drawing review.
- https://helonic.com/blog/drawing-error-rate-by-discipline - Drawing Error Rate by Discipline: Drawing errors per 100 sheets across architectural, structural, mechanical, electrical, and plumbing, which discipline carries the most, from 2,000,000+ issues analyzed.
- https://helonic.com/blog/ai-vs-manual-review-accuracy-study - AI vs Manual Drawing Review: A methodology-backed accuracy study of AI vs manual construction drawing review, precision, recall, and where each wins, from Helonic's review corpus.
- https://helonic.com/blog/state-of-construction-rfis-2026 - State of Construction RFIs 2026: Construction RFI benchmark data for 2026: why RFIs are a symptom of drawing-set quality, not the root problem, plus RFI volume per project, avoidable share, cost per RFI, and the categories driving rework, from 1,000,000+ pages analyzed.
- https://helonic.com/blog/most-common-drawing-errors - The 10 Most Common Construction Drawing Errors We Catch, Ranked by Frequency: The 10 most common construction drawing errors, ranked by how often AI review catches them across 1,000,000+ pages analyzed, from dimensional inconsistencies to code and coordination conflicts.
- https://helonic.com/blog/change-order-cost-benchmark - Cost of a Change Order in 2026: What a construction change order costs in 2026: benchmark data by project type, change orders as a share of contract value, what drives them, and how many are preventable with drawing review.
- https://helonic.com/blog/how-accurate-is-ai-drawing-review - How Accurate Is AI Construction Drawing Review?: AI drawing review accuracy depends on the check: precision versus recall, false positives, and where a person still has to confirm the finding.
- https://helonic.com/blog/can-chatgpt-review-construction-drawings - Can ChatGPT Review Construction Drawings? What General AI Misses: Can ChatGPT review construction drawings? What general AI can and can't do on a drawing set, coverage, cross-sheet reasoning, hallucination risk, and where purpose-built construction AI is required.
- https://helonic.com/blog/can-ai-measure-construction-drawings - Can AI Measure Construction Drawings?: Helonic checks dimension strings, scales, and grids on issued PDFs. That is a drawing check, not a quantity takeoff.
- https://helonic.com/blog/30-60-90-drawing-review - What to Review at 30, 60, and 90: Helonic matches comments to the milestone. Thirty percent is scope and grids. Ninety percent is issued-set conflicts.
- https://helonic.com/blog/is-ai-plan-review-reliable-code-violations - Is AI Plan Review Reliable Enough to Catch Code Violations?: Is AI plan review reliable enough to catch code violations?.
- https://helonic.com/blog/review-procore-drawings-with-ai - How to Review Procore Drawings with AI (Step-by-Step): How to review Procore drawings with AI: connect Helonic to Procore, pull the current drawing set, run AI analysis for coordination and code issues, and push findings back as draft RFIs, step by step.
- https://helonic.com/blog/autodesk-construction-cloud-drawing-review - Autodesk Construction Cloud Drawing Review: Automate QA/QC on Autodesk Construction Cloud drawings with AI: pull the current set from ACC, analyze every sheet for coordination and code issues, no BIM or Revit required, and how it differs from Navisworks.
- https://helonic.com/blog/2024-ibc-changes-drawing-review - 2024 IBC Changes Every Drawing Reviewer Should Know: What changed in the 2024 IBC and why it matters for drawing review: mass timber, means of egress, existing buildings, and the adoption-timing trap of reviewing against the wrong code edition.
- https://helonic.com/blog/nec-2026-updates-electrical-drawing-review - NEC 2026 Updates: What the 2026 NEC means for electrical drawing review: GFCI/AFCI scope, disconnects, surge protection, working clearances, EV and energy storage, and the adoption-timing trap of the wrong edition.
- https://helonic.com/blog/best-bluebeam-alternatives - Best Bluebeam Alternatives: Bluebeam Revu is the standard for markup and takeoff, but it doesn't catch coordination issues automatically.
- https://helonic.com/blog/ai-drawing-analysis-for-owners - AI Drawing Analysis for Owners: Independent AI review as a check on the design team's own QC.
- https://helonic.com/blog/airport-terminal-coordination - Airport Terminal Coordination: How airport terminals stack more systems in less space than almost any other building type.
- https://helonic.com/blog/detail-library-standardization - Detail Library Standardization: How to audit past projects, design and approve standard details, and keep them current, plus what belongs in a detail library and what should stay a one off.
- https://helonic.com/blog/punch-list-root-causes-analysis - Punch List Root Causes Analysis: What your closeout data is telling you about your drawing review.
- https://helonic.com/blog/schedule-compression-coordination-risks - Schedule Compression Coordination Risks: Coordination has sequential dependencies that acceleration cannot shorten.
- https://helonic.com/blog/submittal-tracking-software-guide - Submittal Tracking Software Guide: A practical comparison of submittal tracking tools and where AI is changing the workflow.

- https://helonic.com/blog/how-general-contractors-review-construction-drawings-before-bidding - How GCs Review Drawings Before Bidding: How general contractors review drawings before bidding, from estimator takeoff priorities to bid qualifications, assumptions, and missed pre-bid risks.
- https://helonic.com/blog/how-to-catch-discrepancies-between-drawings-and-specifications - Catch Drawing and Specification Discrepancies: How to catch discrepancies between drawings and specifications before bid day by checking products, performance gaps, and spec references.
- https://helonic.com/blog/inconsistent-sheet-numbering-missed-conflicts - Inconsistent Sheet Numbering Causes Missed Conflicts: Construction drawing cross-reference errors hide the details, specs, and sheet links reviewers need for coordination.
- https://helonic.com/blog/messy-pdf-drawing-quality-helonic - Do Messy PDFs Affect Helonic: Helonic reviews scanned, marked-up, inconsistent drawing sets and still surfaces coordination issues.
- https://helonic.com/blog/preconstruction-risk-drawing-review-findings - What 1,000 Construction Drawing Reviews Reveal About Preconstruction Risk: Drawing review findings show where preconstruction risk concentrates across 1,000+ packages, 1M+ pages, and 2M+ issues.
- https://helonic.com/blog/what-actually-affects-ai-drawing-review-accuracy - What Actually Affects the Accuracy of AI Drawing Review: Scope, missing documents, false positives, and false negatives shape real AI drawing review accuracy.
- https://helonic.com/blog/what-to-look-for-in-ai-construction-drawing-review-platform - Evaluating AI Drawing Review Platforms: What to look for in AI construction drawing review software: input support, workflow fit, security, coverage, and real vendor proof.
- https://helonic.com/blog/why-mep-coordination-fails-preconstruction - Why MEP Coordination Fails in Preconstruction: Five predictable MEP coordination breakdowns hide in plenums, shafts, clearances, specs, and revision lag.
- https://helonic.com/blog/what-is-clash-detection-what-it-doesnt-catch - What Clash Detection Does Not Catch: What BIM clash detection finds, what it requires, and which drawing issues it misses.
- https://helonic.com/blog/what-preconstruction-leaders-get-wrong-about-drawing-review - What Preconstruction Leaders Get Wrong About Drawing Review: Misconceptions about drawing review cause teams to miss BIM gaps, overload experts, underrate small jobs, and absorb late rework costs.


## Press Releases

- https://helonic.com/press-release - Press release index.
- https://helonic.com/press-release/2026-construction-ai-drawing-analysis-report - 2026 Construction AI Report: How Drawing Analysis Platforms Compare: Helonic's February 2026 report comparing AI drawing analysis platforms on accuracy, speed, integrations, input formats, and cost, written by Helonic.

## Knowledge Base - How-To Guides

- https://helonic.com/knowledge-base - Knowledge Base: Index of 200+ construction reference guides, how-to articles, symbol references, and checklists.
- https://helonic.com/knowledge-base/title-block-guide - Title Blocks Explained: Every Field and What to Check: What every title block field means, from seal and sheet number to revision block, plus a checklist to verify each one before a set goes out for permit.
- https://helonic.com/knowledge-base/architectural-paper-sizes - Architectural Paper Sizes: ARCH A to E and ANSI, and What Fits at Each Scale: ARCH D is 24 x 36 inches and ARCH E is 36 x 48. Chart of ARCH, ANSI, and ISO sheet sizes, half-size printing, and what floor plan fits at each scale.
- https://helonic.com/knowledge-base/how-to-read-an-architect-scale - How to Read an Architect's Scale, and When to Use an Engineer's Scale: Read an architect's scale step by step: the 11 scales, the subdivided foot, shared edges, and when to use an engineer's scale for site and civil plans.
- https://helonic.com/knowledge-base/how-to-read-blueprints - How to Read Blueprints: A First-Week Guide for Project Engineers: How to read blueprints in order: sheet index, notes and legends, title block, scale, grids, plans, sections, details like 3/A501, schedules, and MEP sets.
- https://helonic.com/knowledge-base/hatch-patterns-guide - Hatch Patterns on Construction Drawings: What Each Material Hatch Means: Hatch patterns for concrete, CMU, brick, earth, insulation, wood, and steel, with AutoCAD names like AR-CONC and ANSI31, and what to check in review.
- https://helonic.com/knowledge-base/types-of-construction-drawings - Types of Construction Drawings, by Discipline and Phase: Types of construction drawings by discipline (G, C, S, A, M, E, P, FP), phase (SD to as-built), and view, with a reading guide for each one.
- https://helonic.com/knowledge-base/coordination-drawings - Coordination Drawings: What They Are, Who Draws Them, What to Check: Coordination drawings explained: who draws them, how they differ from shop drawings, the sign-off sequence, and what to check before you sign.
- https://helonic.com/knowledge-base/permit-set-checklist - Permit Set Checklist: What a Building Department Expects: A permit drawings checklist by sheet group: code analysis, life safety, site, architectural, structural, MEP, fire, seals, deferred submittals, reports.
- https://helonic.com/knowledge-base/how-to-review-construction-drawings - How To Review Construction Drawings: Review the set by discipline, then overlay them. The pass is looking for clashes, missing dimensions, spec conflicts, and code issues before the package is issued.
- https://helonic.com/knowledge-base/how-to-compare-drawing-revisions - How To Compare Drawing Revisions: Overlay the current issue on the previous one and mark every change that is not clouded. An unclouded change is what the field builds from the wrong sheet.
- https://helonic.com/blog/how-to-check-dimensions-on-construction-drawings - How To Check Dimensions: Add each dimension string on the plan and compare that total to the section and the detail. A string that does not close is a coordination miss before anyone prices or builds it.
- https://helonic.com/blog/how-to-perform-a-constructability-review - How To Perform Constructability Review: A constructability review asks whether the crew can reach it, sequence it, and hold the tolerance shown. Access, lead time, and clearance misses belong in that pass, not in a field RFI.
- https://helonic.com/blog/how-to-set-up-a-plan-review-workflow - How To Set Up Plan Review Workflow: A plan review workflow names who checks coordination, code, and specs, and it records the finding on the sheet before the set is issued.
- https://helonic.com/blog/how-to-find-clashes-in-construction-drawings - How To Find Clashes 2D Drawings: Overlay the architectural, structural, and MEP sheets and look for a duct, pipe, conduit, or beam occupying the same space. That check is done on the issued PDFs and does not need a federated model.
- https://helonic.com/blog/how-to-create-a-clash-detection-report - How To Create Clash Detection Report: A clash report names the sheet, the two systems that collide, who owns the fix, and whether it is open or closed. A list of screenshots with no owner does not get resolved.
- https://helonic.com/blog/how-to-prepare-for-a-design-coordination-meeting - How To Prepare Coordination Meeting: Bring the overlay, the open clashes, and a named owner for each one. A coordination meeting that only reads the log does not move a duct or a beam.
- https://helonic.com/blog/how-to-mark-up-pdf-drawings-for-coordination - How to Mark Up PDFs: A useful markup names the sheet, the detail, and the question, and it points at the exact spot. A cloud with no note does not tell the next reviewer what failed.
- https://helonic.com/blog/how-to-write-an-rfi - How To Write An Rfi: State the sheet, the detail, what conflicts, and the answer you need. An RFI that only says 'please clarify' comes back with another question.
- https://helonic.com/knowledge-base/how-to-track-rfis - How To Track Rfis: Give every RFI a number, a sheet reference, an owner, and an age. An RFI with no drawing location cannot be answered from the set.
- https://helonic.com/knowledge-base/how-to-organize-submittals - How To Organize Submittals: Number each submittal to the spec section, record who has it, and do not let a shop drawing go to fabrication while the review is still open.
- https://helonic.com/knowledge-base/how-to-read-architectural-drawings - How To Read Architectural Drawings: Start with the floor plan, then check the elevations, sections, and details for the same wall, door, and level. The error is usually a tag or a height that does not match across those sheets.
- https://helonic.com/blog/how-to-read-structural-drawings - How To Read Structural Drawings: Use the grid to find each beam, column, and footing, then check the mark against the schedule and the elevation. A member size on the plan that disagrees with the schedule is the error.
- https://helonic.com/knowledge-base/how-to-read-foundation-plans - How to Read a Foundation Plan: How to read a foundation plan: footing marks, footing schedules, foundation types, grid dimensions, and T.O.F./B.O.F.
- https://helonic.com/blog/how-to-read-mep-drawings - How to Read MEP Drawings: Read the HVAC, electrical, and plumbing sheets against the same architectural background. The clash is where a duct, a conduit, and a pipe are drawn through one ceiling space.
- https://helonic.com/knowledge-base/how-to-read-reflected-ceiling-plans - How to Read Reflected Ceiling Plans: The reflected ceiling plan is mirrored. Line up lights, diffusers, sprinklers, and the structure above before anyone orders the ceiling.
- https://helonic.com/knowledge-base/how-to-read-site-plan - How to Read a Site Plan: Check contours, spot grades, utility inverts, and setbacks against the building footprint. A pad elevation that fights the architectural finish floor is a civil miss.
- https://helonic.com/knowledge-base/how-to-read-door-schedule - How To Read Door Schedule: Match each door mark on the plan to the schedule for width, fire rating, hardware group, and frame. A rated door on the plan with a non-rated line in the schedule is a code miss.
- https://helonic.com/knowledge-base/how-to-read-window-schedule - How to Read a Window Schedule: Match each window mark to the size, type, glazing, and U-value in the schedule, then check that opening on the elevation. A storefront that is wider on the elevation than in the schedule will not fit.
- https://helonic.com/knowledge-base/finish-schedule-guide - Finish Schedule Guide: Understanding room finish schedules, finish codes, and material specifications on architectural drawings.
- https://helonic.com/knowledge-base/how-to-review-shop-drawings - How To Review Shop Drawings: Check the shop drawing against the contract set for dimension, material, and connection, not just for a stamp. A shop sheet that does not match the contract detail is what gets fabricated wrong.
- https://helonic.com/knowledge-base/how-to-calculate-occupant-load - How To Calculate Occupant Load: Add the floor area in each room to the occupant load factor for that use, then check that the exits, stairs, and plumbing fixture counts can carry that number.
- https://helonic.com/knowledge-base/how-to-run-oac-meeting - How to Run an OAC Meeting: An OAC meeting needs a written agenda, a named owner for each open item, and minutes that record the decision.
- https://helonic.com/knowledge-base/how-to-read-electrical-drawings - How To Read Electrical Drawings: Trace the panel schedule to the plan, then check that the circuit, the load, and the device on the sheet are the same thing. A home run that lands on the wrong panel is the usual miss.
- https://helonic.com/knowledge-base/how-to-read-plumbing-drawings - How To Read Plumbing Drawings: Follow the waste and vent from the fixture to the riser and check the slope and the pipe size on the diagram. A fixture with no vent, or a slope that cannot fit the structure, becomes an RFI.
- https://helonic.com/knowledge-base/how-to-read-civil-drawings - How To Read Civil Drawings: Read the site plan against the grading, utility, and paving sheets. A rim elevation, invert, or setback that disagrees between those sheets is a field conflict.
- https://helonic.com/knowledge-base/how-to-read-erosion-control-plan - How to Read an Erosion and Sediment Control Plan: How to read an erosion and sediment control plan: BMP symbols, silt fence and sediment trap sizing, construction sequencing, and inspection requirements explained.
- https://helonic.com/knowledge-base/how-to-read-landscape-drawings - How To Read Landscape Drawings: Learn to read landscape construction drawings: planting plans, plant schedules, irrigation systems, hardscape details, and landscape grading.
- https://helonic.com/knowledge-base/how-to-read-specifications - How To Read Specifications: How to Read Construction Specifications: CSI MasterFormat structure, Division 01 General Requirements, specification types, and cross-referencing with drawings.
- https://helonic.com/knowledge-base/how-to-read-grading-plan - How To Read Grading Plan: How to Read a Grading Plan: existing vs proposed grades, contour lines, spot elevations, drainage arrows, building pad elevations, ADA routes, and retaining walls.
- https://helonic.com/knowledge-base/how-to-read-life-safety-plan - How To Read Life Safety Plan: How to Read a Life Safety Plan: occupancy classifications, fire-rated assemblies, egress paths, exit signage, fire alarm devices, sprinkler coverage, and ADA egress requirements.
- https://helonic.com/knowledge-base/how-to-read-hvac-drawings - How To Read Hvac Drawings: Learn to read HVAC construction drawings: equipment schedules, ductwork layouts, piping systems, diffuser placement, control diagrams, and common HVAC symbols.
- https://helonic.com/knowledge-base/how-to-read-fire-sprinkler-drawings - How To Read Fire Sprinkler Drawings: Check head spacing, the hazard classification, and the riser against the reflected ceiling and the structure. A head over a soffit or a main through a beam is a coordination clash.
- https://helonic.com/knowledge-base/how-to-read-stormwater-plan - How To Read Stormwater Plan: How to Read a Stormwater Management Plan: drainage area maps, pre/post-development conditions, BMPs, pipe sizing calculations, outfall locations, and erosion control measures.
- https://helonic.com/knowledge-base/how-to-read-equipment-schedules - How to Read Equipment Schedules: Understanding the tables that specify installed equipment on construction drawings.
- https://helonic.com/knowledge-base/how-to-read-security-drawings - How to Read Security Drawings: Understanding access control, CCTV, intrusion detection, and intercom systems on construction drawings.
- https://helonic.com/knowledge-base/how-to-read-telecom-drawings - How to Read Telecom Drawings: Telecommunications and low-voltage drawings specify data, voice, structured cabling, and network infrastructure.
- https://helonic.com/knowledge-base/temporary-power-plan-guide - Temporary Power Plan Guide: How to read temporary power plans for construction sites, including source location, distribution, grounding, GFCI protection, lighting, and phasing.
- https://helonic.com/knowledge-base/roof-access-ladder-coordination-guide - Roof Access Ladder Coordination Guide: How to review fixed ladder, roof hatch, ships ladder, guardrail, fall protection, and service access coordination on construction drawings.
- https://helonic.com/knowledge-base/low-voltage-pathway-coordination-guide - Low-Voltage Pathway Coordination Guide: How to review cable tray, conduit, sleeves, IDF/MDF rooms, security, AV, controls, and telecom pathways on construction drawings.
- https://helonic.com/knowledge-base/medical-equipment-rough-in-guide - Medical Equipment Rough-In Guide: How to review medical equipment drawings for electrical, plumbing, medical gas, structural support, shielding, access, and vendor coordination.
- https://helonic.com/knowledge-base/utility-shutdown-plan-guide - Utility Shutdown Plan Guide: How to review utility shutdown plans for occupied buildings, phased work, temporary services, notifications, life safety, and restoration sequencing.

## Knowledge Base - Code Compliance References

- https://helonic.com/knowledge-base/ada-accessibility-guide - Ada Accessibility Guide: ADA compliance reference: ramp slopes (1:12), door clearances, turning radii, restroom dimensions, and accessible route requirements.
- https://helonic.com/knowledge-base/fire-rating-guide - Fire Rating Guide: Fire wall, barrier, and partition line patterns, door fire ratings, and assembly requirements for construction document review.
- https://helonic.com/knowledge-base/egress-basics - Egress Basics: Occupancy load calculations, exit width multipliers, travel distances, and worked examples for building egress design.
- https://helonic.com/blog/ibc-occupancy-classification-guide - IBC Occupancy Classification Guide: Groups A to U: Complete reference for all IBC occupancy groups (A, B, E, F, H, I, M, R, S, U) with examples, thresholds, and mixed-use separation requirements.
- https://helonic.com/knowledge-base/construction-types-guide - Construction Types Guide: Understanding the five IBC construction types, fire-resistance requirements, allowable heights/areas, and modifications for sprinklers and frontage.
- https://helonic.com/knowledge-base/firestopping-guide - Firestopping Guide: Understanding firestopping requirements, F-rating vs T-rating, materials, and installation for fire-rated assemblies.
- https://helonic.com/knowledge-base/ibc-fire-separation-distance - Ibc Fire Separation Distance: Understand fire separation distance per IBC Chapter 7: how to calculate it, allowable openings, projection limitations, and exterior wall fire-resistance requirements.
- https://helonic.com/knowledge-base/nfpa-sprinkler-requirements - Nfpa Sprinkler Requirements: Understand NFPA 13 sprinkler requirements: when sprinklers are required, hazard classifications, design density, sprinkler types, and obstruction rules.
- https://helonic.com/knowledge-base/nfpa-72-fire-alarm-requirements - NFPA 72 Fire Alarm Requirements Guide: NFPA 72 fire alarm requirements for drawing review: detector spacing, notification appliance placement, pull station rules, and the 2025 edition's new RAMO zones.
- https://helonic.com/knowledge-base/curb-ramp-detectable-warning-guide - Curb Ramp and Detectable Warning Guide: How to review curb ramps, landings, flares, counter slopes, transitions, and truncated dome detectable warnings on site and civil drawings.
- https://helonic.com/knowledge-base/fire-smoke-damper-coordination-guide - Fire and Smoke Damper Coordination Guide: How to review fire, smoke, and combination fire/smoke dampers across mechanical, life-safety, architectural, and access drawings.
- https://helonic.com/knowledge-base/fire-pump-room-requirements - Fire Pump Room Requirements on Drawings: Helonic checks that the rated walls, outside door, heat, and test header for a fire pump room agree across the architectural, mechanical, and fire sheets.
- https://helonic.com/knowledge-base/trash-and-linen-chute-requirements - Trash and Linen Chute Requirements: Helonic checks the chute shaft rating, the sprinklers at the top and alternate floors, the intake rooms, and the termination room under IBC 713.13.
- https://helonic.com/knowledge-base/stair-pressurization-requirements - Stair Pressurization Requirements: Helonic matches each pressurized stair to a fan, an outdoor intake, a relief path, stair doors, a fire alarm start, and standby power under IBC 909.20.
- https://helonic.com/knowledge-base/smokeproof-stair-vestibule-requirements - Smokeproof Stair Vestibule Size and Door Swing: Helonic checks the 44 by 72 inch vestibule and both door swings against the stair landing on the enlarged plan under IBC 909.20.
- https://helonic.com/knowledge-base/horizontal-exit-requirements - Horizontal Exit Requirements: Helonic checks the 2-hour wall, the door swings, and the refuge area on each side of a horizontal exit under IBC 1026.
- https://helonic.com/knowledge-base/exit-passageway-requirements - Exit Passageway Requirements: Helonic checks that an exit passageway keeps the stair rating and has no tenant doors or unrelated ducts under IBC 1024.
- https://helonic.com/knowledge-base/area-of-refuge-size-requirements - Area of Refuge Size and Stair Landing Fit: Helonic checks the 30 by 48 inch wheelchair spaces, the 48 inch stair, and the door swing on the enlarged stair plan under IBC 1009. The phone has its own page.
- https://helonic.com/knowledge-base/exterior-area-for-assisted-rescue - Exterior Area for Assisted Rescue: Helonic checks the landing size, the rated wall, the open sides, and the 48 inch stair outside an exit door under IBC 1009.7.
- https://helonic.com/knowledge-base/accessible-toilet-room-clearances - Accessible Toilet Room Clearances: Helonic checks that the door swing, grab bars, and lavatory stay out of the 60 by 56 inch water closet clearance under the 2010 ADA Standards.
- https://helonic.com/knowledge-base/ambulatory-vs-wheelchair-toilet-stall - Ambulatory vs Wheelchair Toilet Stalls: Helonic checks when a restroom needs an ambulatory stall and that the plan and schedule mark it apart from the wheelchair stall.

## Knowledge Base - Symbol References

- https://helonic.com/knowledge-base/architectural-plan-symbols - Architectural Plan Symbols: Complete reference for common symbols found on architectural floor plans, elevations, and details.
- https://helonic.com/knowledge-base/electrical-plan-symbols - Electrical Plan Symbols: 43 electrical symbols for construction drawings: power, lighting, fire alarm, security, and communications devices.
- https://helonic.com/knowledge-base/hvac-plan-symbols - HVAC Plan Symbols: Reviewer-grade reference for HVAC drawing symbols on mechanical plans: diffusers, dampers, ductwork, chilled water and hot water piping, sensors, and how they map to the device schedule.
- https://helonic.com/knowledge-base/structural-plan-symbols - Structural Plan Symbols: Structural symbols for construction drawings: moment connections, braced frames, slab conditions, and member designations.
- https://helonic.com/knowledge-base/plumbing-plan-symbols - Plumbing Plan Symbols: Complete reference for pipe types, fixtures, valves, and fittings on plumbing construction drawings.
- https://helonic.com/knowledge-base/fire-protection-symbols - Fire Protection Symbols: Reference for sprinkler heads, fire alarm devices, standpipes, valves, and fire protection equipment symbols on construction drawings.
- https://helonic.com/knowledge-base/site-civil-symbols - Site/Civil Symbols: Reference for utilities, drainage structures, grading symbols, and site features on civil engineering construction drawings.
- https://helonic.com/knowledge-base/fire-alarm-symbols - Fire Alarm Symbols: Comprehensive reference for fire alarm symbols on construction drawings: smoke detectors, heat detectors, pull stations, horns, strobes, NAC, and FACP symbols.
- https://helonic.com/knowledge-base/lighting-plan-symbols - Lighting Plan Symbols: How to read and understand fixture symbols on electrical and construction drawings.

## Knowledge Base - Other References

- https://helonic.com/knowledge-base/construction-abbreviations - Construction Abbreviations: 200+ common abbreviations used on construction drawings across all disciplines: architectural, structural, MEP, civil, and fire protection.
- https://helonic.com/knowledge-base/plumbing-abbreviations - Plumbing Abbreviations: Alternative term for drinking fountain.
- https://helonic.com/knowledge-base/civil-abbreviations - Civil Abbreviations: Civil engineering abbreviations: grading, utilities, paving, and site work for construction document review.
- https://helonic.com/knowledge-base/construction-change-order-guide - Construction Change Order Guide: Understanding change orders, their types (CCD, PCO, CO, ASI), documentation requirements, pricing methods, and how to manage them effectively.
- https://helonic.com/knowledge-base/what-is-an-asi - What is an ASI: Understanding ASIs, when they're used, and how they differ from RFIs and change orders.
- https://helonic.com/blog/construction-punch-list-best-practices - Punch List: A punch list should name the room, the trade, and the defect, and it should close only when someone walks that item.
- https://helonic.com/knowledge-base/mep-structural-clashes - MEP-Structural Clashes: Top 5 MEP vs structural clash types and prevention strategies for construction coordination.
- https://helonic.com/knowledge-base/rcp-coordination - Rcp Coordination: RCP coordination for lights, diffusers, sprinklers, smoke detectors, and ceiling-mounted devices in construction.
- https://helonic.com/knowledge-base/sheet-organization - Sheet Organization: NCS sheet naming conventions (A-101, S-201, M-301) and discipline designators for construction document organization.
- https://helonic.com/knowledge-base/line-weights - Line Weights: Heavy, medium, and light line weight meanings. Cut lines vs visible edges in construction documents.
- https://helonic.com/knowledge-base/drawing-types-explained - Drawing Types Explained: Understanding the organization of construction documents by discipline and sheet type.
- https://helonic.com/knowledge-base/drawing-scale-guide - Drawing Scale Guide: Understanding architectural and civil engineering scales, how to read them, and when to use each scale.
- https://helonic.com/knowledge-base/construction-drawing-qaqc-checklist - Thin twin. Canonical is https://helonic.com/blog/construction-drawing-qaqc-checklist (what a GC should look for when QA'ing a drawing set).
- https://helonic.com/knowledge-base/glossary - Glossary: Construction Glossary: 100+ construction terms and definitions including RFI, ASI, AHJ, BIM, MEP, GC, CM, VE, CO, PCO.
- https://helonic.com/knowledge-base/mechanical-abbreviations - Mechanical and HVAC Abbreviations: Helonic reads AHU, VAV, CHWS, and FSD tags against the schedule and the duct or pipe they serve.
- https://helonic.com/knowledge-base/electrical-abbreviations - Electrical Abbreviations: Comprehensive reference of electrical abbreviations used on construction drawings: AWG, EMT, GFI, MCC, and 100+ more organized by category.
- https://helonic.com/knowledge-base/expansion-joint-cover-coordination-guide - Expansion Joint Cover Coordination Guide: How to review expansion joint covers across architectural finishes, structure, fire ratings, waterproofing, roofs, floors, walls, and ceilings.
- https://helonic.com/knowledge-base/acoustic-rated-assembly-guide - Acoustic-Rated Assembly Guide: How to review STC-rated walls, IIC-rated floors, penetrations, doors, ceilings, flanking paths, and finish details for acoustic performance.
- https://helonic.com/knowledge-base/historic-preservation-drawing-review-guide - Historic Preservation Drawing Review Guide: How to review preservation drawings for protected fabric, demolition limits, existing conditions, envelope repairs, accessibility, MEP routing, and documentation.
- https://helonic.com/knowledge-base/structural-abbreviations - Structural Abbreviations: Structural drawings use abbreviations for beams, columns, footings, concrete, steel, and post-tensioning, and Helonic checks the ones reviewers mix up on shop drawings.
- https://helonic.com/knowledge-base/concrete-inspection-checklist - Concrete Inspection Checklist: Complete concrete inspection checklist covering pre-pour, during-pour, and post-pour checks including formwork, rebar, slump tests, curing, and common deficiencies.
- https://helonic.com/knowledge-base/waterproofing-details-guide - Waterproofing Details Guide: Complete guide to waterproofing details in construction: membrane types, below-grade and above-grade systems, critical detail locations, termination requirements, and common failures.
- https://helonic.com/knowledge-base/steel-connection-types - Steel Connection Types: Visual guide to steel connection types in construction: shear connections, moment connections, bracing connections, base plates, bolt patterns, and common notation on structural drawings.
- https://helonic.com/knowledge-base/roof-drainage-design - Roof Drainage Design: Basics: primary vs overflow systems, scupper sizing, internal drain placement, tapered insulation for slope, crickets, and IPC requirements.
- https://helonic.com/knowledge-base/curtain-wall-details - Curtain Wall Details: Curtain wall drawing review covers stick and unitized systems, and the head, sill, jamb, corner, and stack-joint details that fail in the field.
- https://helonic.com/knowledge-base/masonry-construction-guide - Masonry Construction Guide: Masonry Construction Basics: CMU, brick, and stone systems, reinforcement requirements, control joints, lintels, bond beams, flashing, and weep holes.
- https://helonic.com/knowledge-base/elevator-shaft-coordination - Elevator shaft sizing, pit depth, and ASME A17.1 reference. Field error stories are /blog/elevator-shaft-coordination-errors.: Reference for hoistway size, pit depth, overhead clearance, and ASME A17.1 rules.
- https://helonic.com/knowledge-base/concrete-mix-design-basics - Concrete Mix Design Basics: Guide to concrete mix design basics: mix components, strength classes, slump ranges, air entrainment, common mix designations, and specification section references for construction professionals.
- https://helonic.com/knowledge-base/structural-steel-shapes - Structural Steel Shapes: Reviewer-grade reference for structural steel shapes, wide flange (W), HSS, angles, channels, plates, and structural tees, with designations, dimensional tables, ASTM grades, and real use-case guidance.
- https://helonic.com/knowledge-base/door-hardware-guide - Door Hardware Guide: Guide to door hardware in construction: hardware sets, hinge types, lockset functions, closers, panic hardware, ADA requirements, and keying systems for construction professionals.
- https://helonic.com/knowledge-base/window-types-guide - Window Types Guide: Guide to window types and specifications for construction: operation types, frame materials, performance ratings, U-factor, SHGC, air infiltration, and specification requirements.
- https://helonic.com/knowledge-base/roofing-systems-guide - Roofing Systems Guide: Guide to roofing systems for construction: built-up roofing, single-ply membranes (TPO, EPDM, PVC), metal roofing, shingle systems, insulation, flashing details, and warranty considerations.
- https://helonic.com/knowledge-base/how-to-determine-seismic-design-category - How to Determine Your Project's Seismic Design Category: A step-by-step method for determining Seismic Design Category: Risk Category, Site Class, mapped Ss/S1 values, and the two-table cross-reference in ASCE 7.
- https://helonic.com/knowledge-base/is-ai-drawing-review-software-secure - Is AI Drawing Review Software Secure?: A practical checklist for evaluating AI drawing review software security: SOC 2 status, encryption, model training policy, data retention, and access controls.
- https://helonic.com/knowledge-base/construction-joint-types - Construction Joint Types: Reviewer-grade reference for construction joints in concrete: construction vs control vs expansion vs cold joints, ACI detailing, masonry and steel equivalents, with spacing tables and field-tested practice.
- https://helonic.com/knowledge-base/architectural-detail-types - Architectural Detail Types: Reviewer-grade reference for architectural and construction details: wall sections, plan details, enlarged plans, interior elevations, stair and roof details, scale conventions, typical-vs-specific details, and what a complete detail must include.
- https://helonic.com/knowledge-base/as-built-drawings-guide - As-Built Drawings Guide: Reviewer-grade reference for as-built drawings, record drawings, and conformed documents: how they differ from IFC drawings and shop drawings, who maintains them, what AIA contracts require, and how to deliver them at closeout.
- https://helonic.com/knowledge-base/ceiling-grid-coordination - Ceiling Grid Coordination: How to coordinate suspended ceiling systems with MEP and structural elements.
- https://helonic.com/knowledge-base/submittal-log-guide - Submittal Log Guide: A submittal log is your master record of every item that must be submitted for review and approval before construction proceeds.
- https://helonic.com/knowledge-base/geotechnical-report-basics - Geotechnical Report Basics: Reviewer-grade reference for geotechnical reports in construction: how to read boring logs, allowable bearing capacity, seismic site class, IBC Section 1803 requirements, and how geotech data drives footing and foundation design.
- https://helonic.com/knowledge-base/csi-specification-divisions - CSI MasterFormat Specification Divisions: Reviewer-grade reference for CSI MasterFormat specifications: the full 50-division taxonomy, CSI SectionFormat 3-part structure, spec section numbering, and prescriptive/proprietary/performance methods.
- https://helonic.com/knowledge-base/drawing-transmittal-guide - Drawing Transmittal Guide: A drawing transmittal is your formal record of which drawings, in which revision, went to whom, on which date.
- https://helonic.com/knowledge-base/mep-penetration-details-guide - MEP Penetration Details Guide: How MEP penetrations through rated assemblies must be detailed and inspected.
- https://helonic.com/knowledge-base/construction-submittal-types-guide - Construction Submittal Types Guide: The complete reference to construction submittal types, review sequencing, and the differences between Action and Informational submittals in the specification.
- https://helonic.com/knowledge-base/how-to-read-phasing-plans - How to Read Phasing Plans: Phasing plans show what gets built when, what stays occupied, and how the site flows through construction.
- https://helonic.com/knowledge-base/ibc-egress-width-requirements - IBC Egress Width Requirements: IBC Section 1005 egress width requirements, the 0.2\"/0.3\" factors, staircase versus corridor calculations, and the 50% rule for multiple exits.
- https://helonic.com/knowledge-base/how-to-read-kitchen-equipment-drawings - How to Read Kitchen Equipment Drawings: Kitchen equipment plans show hoods, utility rough-ins, clearances, and NSF compliance.
- https://helonic.com/knowledge-base/nec-panel-clearance-requirements - NEC Panel Clearance Requirements: NEC 110.26 working clearances around electrical panels, switchgear, and MCCs.
- https://helonic.com/knowledge-base/how-to-read-wall-type-schedules - How to Read Wall Type Schedules: Wall type schedules show stud gauge, framing spacing, sheathing, insulation, and ratings for every wall in the project.
- https://helonic.com/knowledge-base/construction-mockup-guide - Construction Mockup Guide: Mockups verify assembly quality, appearance, and coordination before full production.
- https://helonic.com/knowledge-base/how-to-read-signage-drawings - How to Read Signage Drawings: Signage drawings show wayfinding, room ID, code-required signs, and ADA signage specifications.
- https://helonic.com/knowledge-base/ashrae-90-1-energy-compliance-basics - ASHRAE 90.1 Energy Compliance Basics: ASHRAE 90.1 sets the minimum energy performance baseline for commercial buildings.
- https://helonic.com/knowledge-base/how-to-read-elevator-drawings - How to Read Elevator Drawings: Elevator drawings combine structural, architectural, mechanical, electrical, and code review in a single shaft.
- https://helonic.com/knowledge-base/how-to-read-irrigation-plans - How to Read Irrigation Plans: Irrigation drawings combine hydraulic engineering, planting design, and electrical control into a single set.
- https://helonic.com/knowledge-base/how-to-read-pool-drawings - How to Read Swimming Pool Drawings: Pool drawings are produced by a specialty pool consultant and reference structural, mechanical, plumbing, and electrical disciplines.
- https://helonic.com/knowledge-base/how-to-read-medical-gas-drawings - How to Read Medical Gas Drawings: How to read medical gas drawings under NFPA 99: piping conventions for oxygen, medical air, vacuum, and nitrous oxide, outlet schedules, alarm panels, and zone valve boxes.
- https://helonic.com/knowledge-base/how-to-read-traffic-control-plans - How to Read Traffic Control Plans: Traffic control plans (TCPs) govern how construction work interacts with public roadways.
- https://helonic.com/knowledge-base/solar-pv-mounting-details-guide - Solar PV Mounting Details Guide: Roof attachment is the highest-risk part of any rooftop solar installation.
- https://helonic.com/knowledge-base/gas-piping-symbols-guide - Gas Piping Symbols Guide: Natural gas, propane, and specialty gas piping use a specific symbol vocabulary that overlaps with general plumbing but adds shutoffs, regulators, and meter….
- https://helonic.com/knowledge-base/parapet-coping-details-guide - Parapet and Coping Details Guide: The parapet is one of the highest-failure assemblies on a low-slope roof.
- https://helonic.com/knowledge-base/construction-staging-logistics-plan-guide - Construction Site Logistics and Staging Plans: Logistics plans show how a construction site operates: where crews park, where materials stage, where cranes pick, and how trucks deliver.
- https://helonic.com/knowledge-base/how-to-read-millwork-shop-drawings - How to Read Millwork Shop Drawings: Millwork shop drawings are produced by the fabricator and translate the architect's intent into a manufacturing document.
- https://helonic.com/knowledge-base/rfi-vs-asi-vs-bulletin-change-order - RFI vs ASI vs Bulletin vs Change Order: RFI vs ASI vs bulletin vs change order, explained: who issues each one, whether it's binding, what triggers it, and which document you actually need mid-project.
- https://helonic.com/knowledge-base/scan-to-bim-vs-as-built-review - Scan-to-BIM vs As-Built Drawing Review: Scan-to-BIM vs as-built drawings compared: laser scanning and point clouds vs red-line PDF review, cost, turnaround, accuracy, and when each fits your closeout workflow.
- https://helonic.com/knowledge-base/ai-takeoff-accuracy-vs-drawing-review - AI Takeoff Accuracy vs. AI Drawing Review: AI takeoff accuracy vs. AI drawing review: what each actually measures, how accurate AI quantity takeoff really is, and why estimators need both before a bid goes out.
- https://helonic.com/knowledge-base/ai-for-structural-engineering - AI for Structural Engineering: How AI structural drawing review checks load paths, connections, and code citations, and how it differs from AI structural design tools.
- https://helonic.com/knowledge-base/how-to-read-structural-general-notes - How to Read a Structural General Notes Sheet: What belongs on a structural general notes sheet, why it drifts out of sync with the plans, and a checklist for catching conflicts before a set is issued.
- https://helonic.com/knowledge-base/construction-addendum-guide - What Is a Construction Addendum: What a construction addendum changes, how addenda are numbered, why they get missed during bidding, and how to track every one before bid day.
- https://helonic.com/knowledge-base/deferred-submittals-guide - What Is a Deferred Submittal in Construction: Deferred submittals explained: what gets deferred, who approves the deferral, how the review fee works, and why uncoordinated deferred items cause field conflicts.
- https://helonic.com/knowledge-base/post-tensioned-slab-mep-coordination - Post-Tensioned Slab MEP Penetrations: How to review MEP penetrations through post-tensioned concrete slabs: anchorage zone rules, GPR scanning, core size limits, and what structural review needs to catch before anyone drills.
- https://helonic.com/knowledge-base/bim-execution-plan-guide - BIM Execution Plan (BEP) and Level of Development: What a BIM Execution Plan defines, how Level of Development (LOD 100-400) works by phase, and why 2D drawing sets still need review even on model-driven projects.

- https://helonic.com/knowledge-base/how-to-read-structural-steel-drawings - How To Read Structural Steel Drawings: How to read structural steel drawings: AISC member callouts (W, HSS, C, MC, L), connection details, weld symbols, bolt callouts, erection plans, and shop drawings.
- https://helonic.com/knowledge-base/ai-building-code-review - Ai Building Code Review: AI building code review uses computer vision and large language models to check construction drawings against IBC, NFPA, ADA, and ASHRAE requirements.
- https://helonic.com/knowledge-base/ai-for-construction-drawings - Ai For Construction Drawings: AI for construction drawings: the seven categories of AI applied to drawings (review, extraction, generation, search, classification, compliance, coordination), what works reliably today, what is still hype, and how to evaluate a tool for your team.
- https://helonic.com/knowledge-base/ai-plan-check - Ai Plan Check: AI plan check applies AI to the AHJ side of permit review, automating code-compliance checks, accessibility verification, and consistency cross-checks on construction drawings before the human plan reviewer touches them.
- https://helonic.com/blog/qa-vs-qc-in-construction - QA vs QC in Construction: QA vs QC in construction explained: quality assurance is the proactive process that prevents defects; quality control is the reactive inspection that finds them.
- https://helonic.com/knowledge-base/construction-quality-control-plan-guide - Construction Quality Control Plan Guide: How to write a construction quality control plan that passes owner and CM submittal review: the six core sections, how to structure ITPs, common rejection reasons, and where drawing review fits.
- https://helonic.com/knowledge-base/ai-construction-inspection - AI Inspection in Construction: AI inspection in construction spans two categories: AI document and drawing inspection that catches issues before construction, and AI visual/field inspection that checks built work.
- https://helonic.com/knowledge-base/rebar-placement-guide - Rebar Placement Guide: Understanding concrete cover requirements, standard spacing, development lengths, and how to read rebar callouts on structural drawings.
- https://helonic.com/knowledge-base/construction-daily-log-guide - Construction Daily Log Guide: What to include in a daily field log, why they're critical for claims defense, and how to structure them for maximum value.
- https://helonic.com/knowledge-base/change-order-prevention-guide - Change Order Prevention Guide: Root causes of change orders, prevention strategies at design and preconstruction phases, managing scope creep, and effective tracking.
- https://helonic.com/knowledge-base/how-to-read-detail-sheets - How To Read Detail Sheets: Navigating detail sheets, reference systems, scale conventions, understanding how details relate to plans and elevations, and identifying critical detail types.
- https://helonic.com/knowledge-base/construction-defect-types - Construction Defect Types: Patent vs. latent defects, design vs.
- https://helonic.com/knowledge-base/ibc-accessible-routes-guide - Ibc Accessible Routes Guide: IBC and ADA requirements for accessible routes, slope limits, protruding objects, surface requirements, and how to verify accessible routes on drawings.
- https://helonic.com/knowledge-base/mechanical-room-clearances - Mechanical Room Clearances: Required service clearances for HVAC equipment, boilers, chillers, AHUs, electrical panels, and how to verify these on plans before construction.
- https://helonic.com/knowledge-base/drawing-revision-cloud-guide - Drawing Revision Cloud Guide: What revision clouds are, how to read them, revision triangles, revision history blocks, and how to use revision clouds to understand what changed between….
- https://helonic.com/knowledge-base/stair-design-requirements - Stair Design Requirements: IBC requirements for stair dimensions (rise, run, width), handrails, guards, landings, headroom, and common errors found on stair drawings.
- https://helonic.com/knowledge-base/construction-specifications-types - Construction Specifications Types: The three types of construction specifications, when each is used, substitution clauses, and how spec type affects drawing coordination and submittals.
- https://helonic.com/knowledge-base/expansion-joint-guide - Expansion Joint Guide: Expansion joints are critical building elements that allow materials to move safely due to thermal expansion, seismic activity, and settlement.
- https://helonic.com/knowledge-base/how-to-read-demolition-drawings - How To Read Demolition Drawings: Demolition drawings use specialized symbols, hatching, and notation to distinguish what gets removed from what stays.
- https://helonic.com/knowledge-base/temporary-construction-facilities-guide - Temporary Construction Facilities Guide: Temporary facilities, power, water, fencing, crane locations, material staging, are critical to construction logistics but often poorly documented on drawings.
- https://helonic.com/knowledge-base/concrete-formwork-guide - Concrete Formwork Guide: Concrete formwork starts with understanding what the structural drawings tell you about pour sequences, slab edges, beam heights, and shore/reshore….
- https://helonic.com/knowledge-base/plumbing-riser-diagram-guide - Plumbing Riser Diagram Guide: Plumbing riser diagrams show vertical distribution of water, waste, and vent pipes through a building.
- https://helonic.com/knowledge-base/hvac-duct-sizing-basics - Hvac Duct Sizing Basics: HVAC duct sizing is critical to system performance.
- https://helonic.com/knowledge-base/structural-loading-diagram-guide - Structural Loading Diagram Guide: Structural loading diagrams communicate how forces are applied to a building and how they travel through the structure to the foundation.
- https://helonic.com/knowledge-base/fire-alarm-system-layout-guide - Fire Alarm System Layout Guide: Fire alarm systems are heavily regulated by NFPA 72 (National Fire Alarm Code) and coordinated across architectural, mechanical, and electrical disciplines.
- https://helonic.com/knowledge-base/parking-lot-design-standards - Parking Lot Design Standards: Parking lots must follow strict dimensional and accessibility standards to function safely and legally.
- https://helonic.com/knowledge-base/construction-cost-codes-guide - Construction Cost Codes Guide: CSI MasterFormat is the standard classification system for construction work, products, and services.
- https://helonic.com/knowledge-base/sleeve-penetration-schedule-guide - How to review sleeve and penetration schedules for location, size, trade ownership, firestopping, structural openings, and installation sequence.: How to review sleeve and penetration schedules for location, size, trade ownership, firestopping, structural openings, and installation sequence.
- https://helonic.com/knowledge-base/anchor-bolt-plan-guide - How to read and review anchor bolt plans for grids, base plates, templates, embeds, edge distances, tolerances, and equipment coordination.: How to read and review anchor bolt plans for grids, base plates, templates, embeds, edge distances, tolerances, and equipment coordination.
- https://helonic.com/knowledge-base/equipment-pad-coordination-guide - How to review housekeeping pads, rooftop pads, generator pads, transformer pads, and equipment bases across structural, MEP, civil, and access drawings.: How to review housekeeping pads, rooftop pads, generator pads, transformer pads, and equipment bases across structural, MEP, civil, and access drawings.
- https://helonic.com/knowledge-base/fire-alarm-sequence-of-operations-guide - How to read and review a fire alarm sequence of operations matrix for initiating devices, notification, elevator recall, HVAC shutdown, doors, and smoke control.: How to read and review a fire alarm sequence of operations matrix for initiating devices, notification, elevator recall, HVAC shutdown, doors, and smoke control.
- https://helonic.com/knowledge-base/roof-curb-coordination-guide - How to review roof curbs for rooftop equipment, structure, flashing, insulation height, roof slope, drainage, and maintenance access.: How to review roof curbs for rooftop equipment, structure, flashing, insulation height, roof slope, drainage, and maintenance access.
- https://helonic.com/knowledge-base/below-slab-vapor-barrier-guide - How to review below-slab vapor barriers for continuity, penetrations, laps, terminations, puncture protection, and coordination with foundations and utilities.: How to review below-slab vapor barriers for continuity, penetrations, laps, terminations, puncture protection, and coordination with foundations and utilities.
- https://helonic.com/knowledge-base/control-joint-layout-guide - How to review control joint layout in slabs, masonry, stucco, and wall assemblies for spacing, alignment, aesthetics, and coordination with openings.: How to review control joint layout in slabs, masonry, stucco, and wall assemblies for spacing, alignment, aesthetics, and coordination with openings.
- https://helonic.com/knowledge-base/structural-opening-review-guide - How to review structural openings for ducts, pipes, sleeves, stairs, shafts, doors, louvers, roof curbs, and equipment access.: How to review structural openings for ducts, pipes, sleeves, stairs, shafts, doors, louvers, roof curbs, and equipment access.
- https://helonic.com/knowledge-base/access-panel-coordination-guide - How to review access panels for valves, dampers, cleanouts, controls, junction boxes, rated assemblies, ceilings, finishes, and inspection access.: How to review access panels for valves, dampers, cleanouts, controls, junction boxes, rated assemblies, ceilings, finishes, and inspection access.
- https://helonic.com/knowledge-base/commissioning-issues-log-guide - How to structure and review a commissioning issues log for startup, testing, controls, TAB, owner training, closeout, and warranty follow-through.: How to structure and review a commissioning issues log for startup, testing, controls, TAB, owner training, closeout, and warranty follow-through.
- https://helonic.com/knowledge-base/structural-steel-symbols - Structural Steel Symbols: Reviewer-grade reference for structural steel symbols on framing plans and connection details: shape symbols (W, HSS, L, C, WT, PL), weld and bolt symbols, line weights, and structural abbreviations.
- https://helonic.com/knowledge-base/control-joint-vs-construction-joint - Control Joint Vs Construction Joint: Side-by-side comparison of control joints, construction joints, contraction joints, cold joints, and expansion joints in concrete, with the ACI detailing, spacing, and timing differences that determine whether a slab cracks where you want it.
- https://helonic.com/knowledge-base/code-compliance-checklist - Code Compliance Checklist: A reviewer's checklist for verifying construction drawings comply with IBC, IFC, ADA, NFPA, NEC, IPC, IMC, and IECC.
- https://helonic.com/knowledge-base/commissioning-drawing-review - Commissioning Drawing Review: How commissioning agents review construction drawings: design review milestones, what to look for in mechanical and electrical drawings, and the documents needed for functional testing.
- https://helonic.com/knowledge-base/construction-defect-analysis - Construction Defect Analysis: How to investigate, classify, and document construction defects.
- https://helonic.com/knowledge-base/construction-delivery-methods - Construction Delivery Methods: Design-Bid-Build, CM at Risk, Design-Build, IPD, Progressive Design-Build, and Public-Private Partnerships, how each delivery method affects risk, schedule, cost, and drawing quality.
- https://helonic.com/knowledge-base/construction-risk-assessment - Construction Risk Assessment: How to identify, score, and mitigate construction project risks across design, execution, schedule, cost, safety, and contract.
- https://helonic.com/knowledge-base/cross-discipline-coordination - Cross Discipline Coordination: How to coordinate architectural, structural, MEP, fire protection, and low-voltage drawings to prevent clashes, rework, and RFIs.
- https://helonic.com/knowledge-base/design-qaqc-best-practices - Design Qaqc Best Practices: Quality assurance and quality control for construction drawings: review milestones, reviewer roles, structured checklists, and procedures for catching errors before issue.
- https://helonic.com/knowledge-base/design-quality-and-claims - Design Quality And Claims: How design document quality drives or prevents construction claims.
- https://helonic.com/knowledge-base/drawing-errors-and-claims - Drawing Errors And Claims: How drawing errors generate change orders, delays, and disputes.
- https://helonic.com/knowledge-base/ductwork-clash-detection - Ductwork Clash Detection: How to detect ductwork clashes with structure, piping, sprinklers, and conduit.
- https://helonic.com/knowledge-base/electrical-drawing-review-checklist - Electrical Drawing Review Checklist: A checklist for reviewing electrical construction drawings: service, panelboards, branch circuits, grounding, NEC compliance, emergency power, and coordination with other disciplines.
- https://helonic.com/knowledge-base/how-to-read-lighting-plans - How To Read Lighting Plans: How to read commercial lighting plans: fixture symbols, fixture schedules, circuiting, switching, controls, emergency lighting, and coordination with reflected ceiling plans.
- https://helonic.com/knowledge-base/how-to-read-mechanical-drawings - How To Read Mechanical Drawings: How to read HVAC and mechanical construction drawings: symbols, equipment schedules, ductwork, piping, sequence of operations, and coordination with other disciplines.
- https://helonic.com/knowledge-base/landscape-utility-coordination - Landscape Utility Coordination: How to coordinate landscape design with site utilities: trees vs.
- https://helonic.com/knowledge-base/panel-schedule-errors - Panel Schedule Errors: Common errors in electrical panel schedules: missing circuits, wrong demand factors, AIC ratings, breaker sizing, and how to QC a panel schedule before issue.
- https://helonic.com/knowledge-base/pipe-slope-violations - Pipe Slope Violations: IPC and UPC pipe slope requirements for sanitary, storm, and condensate.
- https://helonic.com/knowledge-base/renovation-planning-guide - Renovation Planning Guide: How to plan a renovation when you only have existing drawings.
- https://helonic.com/knowledge-base/sequence-of-operations-review - Sequence Of Operations Review: How to review HVAC sequence of operations narratives.
- https://helonic.com/knowledge-base/site-grading-review - Site Grading Review: How to review site grading plans: spot elevations, contours, slope to drains, ADA accessible routes, stormwater management, and erosion control coordination.
- https://helonic.com/knowledge-base/conformance-set-of-drawings - Conformance Set Of Drawings: A conformance set of drawings is the final, code-official-approved version of a project's construction documents.
- https://helonic.com/knowledge-base/record-drawings-vs-as-built-drawings - Record Drawings Vs As Built Drawings: Record drawings and as-built drawings are often used interchangeably, but contracts define them differently.
- https://helonic.com/knowledge-base/common-nec-violations-on-drawings - Common NEC violations on electrical drawings: Helonic flags working clearance, GFCI, AFCI, and disconnects on electrical sheets. The review sequence stays on the electrical checklist.
- https://helonic.com/knowledge-base/construction-drawing-set-order - National CAD Standard sheet order. Helonic uses it to spot a missing discipline. Distinct from sheet index drift.: National CAD Standard sheet order runs general, civil, landscape, architectural, structural, then mechanical, electrical, and plumbing.
- https://helonic.com/knowledge-base/how-to-review-general-arrangement-drawings - How to review a GA drawing: A GA drawing shows the whole frame, plant, or floor in one view.
- https://helonic.com/knowledge-base/architectural-structural-grid-mismatch - Architectural and structural grids that disagree. Helonic compares the sheets. Dimension strings stay on the dimension guide.: A grid letter that shifts between the architectural plan and the structural plan moves every column, shaft, and dimension that hangs on it.
- https://helonic.com/knowledge-base/common-plumbing-code-violations-on-drawings - IPC misses on plumbing drawings: IPC misses on plumbing sheets: fixture counts, venting, cleanouts, water-heater discharge, and slopes the riser never shows.
- https://helonic.com/knowledge-base/curb-ramp-slope-site-plans - Curb ramp slope on site plans: Helonic checks 1:12 ramp runs, 1:48 cross slope, and 1:10 flares. The 1:20 accessible route stays on the ADA guide.
- https://helonic.com/knowledge-base/area-of-refuge-two-way-communication - Area of Refuge Communication: Helonic looks for IBC 1009 two-way communication at the refuge. Exit signs stay on the life safety review.
- https://helonic.com/knowledge-base/occupancy-separation-on-drawings - Occupancy Separation on Drawings: Helonic flags a missing fire barrier between uses under IBC Table 508.4. Penetrations stay on the assembly article.
- https://helonic.com/knowledge-base/building-section-vs-wall-section - Building Sections vs Wall Sections: The difference between building sections, wall sections, and detail sections, and when each is required.
- https://helonic.com/knowledge-base/construction-quantity-takeoff-guide - Construction Quantity Takeoff Guide: How to perform accurate quantity takeoffs from 2D construction drawings for bidding, procurement, and material planning.
- https://helonic.com/knowledge-base/drawing-match-lines-guide - Drawing Match Lines and Key Plans: How match lines, key plans, and drawing partial plans work together on large floor plates.
- https://helonic.com/blog/construction-drawing-set-phases-guide - Drawing Set Phases Guide: What each drawing phase contains, who it's for, and how to review documents appropriately at each phase.
- https://helonic.com/knowledge-base/electrical-single-line-diagram-guide - Electrical Single-Line Diagram Guide: Understand service entrances, transformers, switchgear, feeders, and branch circuits on one-line diagrams to trace electrical distribution and identify….
- https://helonic.com/knowledge-base/floor-plan-vs-framing-plan - Floor Plan vs Framing Plan: The difference between architectural floor plans and structural framing plans, and why you need both for accurate coordination.
- https://helonic.com/knowledge-base/how-to-read-panel-schedule - How to Read an Electrical Panel Schedule: Decode panel schedules: branch circuits, breaker sizes, loads, and panelboard design to understand the electrical system at the circuit level.
- https://helonic.com/knowledge-base/how-to-read-roof-plan - How to Read a Roof Plan: Understand slope, drainage, penetrations, and roof assembly callouts on architectural roof plans.
- https://helonic.com/knowledge-base/how-to-read-welding-symbols - How to Read Welding Symbols: Decode AWS A2.4 welding symbols on structural and miscellaneous metal drawings to verify weld quality and type.
- https://helonic.com/knowledge-base/keynotes-vs-general-notes - Keynotes vs General Notes: How keynote systems work, when to use general notes, and why inconsistency between the two causes field errors.


## Free Tools

- https://helonic.com/tools - Free construction tools and calculators.
- https://helonic.com/tools/rfi-cost-calculator - RFI Cost Calculator: Calculate the true cost of RFIs on your project.
- https://helonic.com/tools/rework-savings-estimator - Rework Savings Estimator: estimate potential savings from catching construction issues during preconstruction review.
- https://helonic.com/tools/drawing-review-time-calculator - Drawing Review Time Calculator: compare manual vs AI-assisted drawing review time based on drawing set size.

## Building Codes

- https://helonic.com/codes - Building Codes: Full-text search across IBC (International Building Code), IRC (International Residential Code), NEC (National Electrical Code), and IPC (International Plumbing Code).

## Blog


## Knowledge Base (200+ guides)

- https://helonic.com/knowledge-base/what-is-helonic - What is Helonic?: Helonic is an AI construction drawing analysis platform that reviews 2D PDF sets, flags issues on the sheet, and pushes RFIs to Procore and Autodesk. No BIM required.
- https://helonic.com/knowledge-base/how-helonic-reviews-drawings - How Helonic reviews construction drawings: Helonic reviews 2D PDF construction drawings sheet by sheet, flags issues with page coordinates, and lets reviewers push accepted findings as RFIs.
- https://helonic.com/knowledge-base/helonic-drawing-issue-categories - What issues Helonic catches: Helonic catches ten categories of drawing issues, from coordination and code to MEP, fire safety, accessibility, and QA/QC, each with sheet coordinates.
- https://helonic.com/blog/ai-drawing-review-without-bim - AI drawing review without BIM: Helonic reviews 2D PDF construction drawings without a BIM model. Keep Navisworks when a complete federated model exists.
- https://helonic.com/knowledge-base/how-long-does-ai-drawing-review-take - How long AI drawing review takes: Helonic typically returns findings in 15 to 30 minutes after you upload a 2D PDF set.
- https://helonic.com/knowledge-base/ai-drawing-review-cost - How much AI drawing review costs: How AI drawing review is priced: sheet-volume subscriptions, per-check fees, and per-square-foot project charges.
- https://helonic.com/knowledge-base/helonic-y-combinator - Helonic is a Y Combinator-backed AI construction drawing analysis company.: Helonic is a Y Combinator-backed AI construction drawing analysis company.
- https://helonic.com/knowledge-base/helonic-procore-rfi-workflow - How Helonic writes RFIs into Procore from accepted drawing findings.: How Helonic writes RFIs into Procore: pull the drawing set, review findings, then push accepted issues with sheet references already attached.
- How-to guides for drawing review, clash detection, RFIs, and reading every discipline of drawings
- Building code reference (ADA, fire rating, egress, IBC occupancy, construction types)
- Symbol references for all disciplines (architectural, electrical, HVAC, structural, plumbing, fire protection, civil)
- Abbreviation guides, checklists, and a 100+ term construction glossary

Full index: https://helonic.com/knowledge-base

## Locations

- https://helonic.com/locations - State-specific construction drawing analysis pages covering building codes, licensing, and construction considerations for 20 US states.

## Press Releases


## City-Specific Plan Check (150 cities)

- https://helonic.com/plan-check-in - Plan Check by City: Index of 150 city-specific AI drawing analysis pages covering local building codes, permit processes, and plan check requirements.
- https://helonic.com/plan-check-in/los-angeles-ca - Plan Check in Los Angeles, CA: Los Angeles plan check runs on the 2022 Los Angeles Building Code, and Helonic reads the issued 2D PDFs for seismic, hillside, and soft-story retrofit issues before LADBS reviews the set.
- https://helonic.com/plan-check-in/san-francisco-ca - Plan Check in San Francisco, CA: San Francisco plan check runs on the 2022 San Francisco Building Code, and Helonic reads the issued 2D PDFs for seismic, Article 10/11 historic, and green-building conflicts before DBI reviews the set.
- https://helonic.com/plan-check-in/san-diego-ca - Plan Check in San Diego, CA: San Diego plan check runs on the 2022 California Building Code, and Helonic reads the issued 2D PDFs for a brush-management zone drawn as a planting note instead of a dimensioned setback before Development Services reviews the set.
- https://helonic.com/plan-check-in/san-jose-ca - Plan Check in San Jose, CA: San Jose plan check runs on the 2022 CBC with local reach codes, and Helonic reads the issued 2D PDFs for energy and Urban Village conflicts before Planning, Building and Code Enforcement reviews the set.
- https://helonic.com/plan-check-in/sacramento-ca - Plan Check in Sacramento, CA: Sacramento plan check runs on the 2022 CBC with flood-zone amendments, and Helonic reads the issued 2D PDFs for river-flood and heat-design conflicts before Community Development reviews the set.
- https://helonic.com/plan-check-in/new-york-ny - Plan Check in New York, NY: New York plan check runs on the 2022 NYC Building Code, not the state code, and Helonic reads the issued 2D PDFs for Local Law 97, facade, and DOB code conflicts before the Department of Buildings reviews the set.
- https://helonic.com/plan-check-in/houston-tx - Plan Check in Houston, TX: Houston plan check runs on the 2021 IBC and IRC with city amendments and no zoning code, and Helonic reads the issued 2D PDFs for wind-load conflicts before Public Works reviews the set.
- https://helonic.com/plan-check-in/dallas-tx - Plan Check in Dallas, TX: Dallas plan check runs on the 2021 IBC and IRC, and Helonic reads the issued 2D PDFs for wind-load and expansive-soil foundation conflicts before Sustainable Development and Construction reviews the set.
- https://helonic.com/plan-check-in/austin-tx - Plan Check in Austin, TX: Austin plan check runs on the 2021 IBC and IRC, and Helonic reads the issued 2D PDFs for Austin Energy Green Building and Edwards Aquifer impervious-cover conflicts before Development Services reviews the set.
- https://helonic.com/plan-check-in/san-antonio-tx - Plan Check in San Antonio, TX: San Antonio plan check runs on the 2021 IBC and IRC, and Helonic reads the issued 2D PDFs for Edwards Aquifer recharge-zone and military-base height conflicts before Development Services reviews the set.
- https://helonic.com/plan-check-in/miami-fl - Plan Check in Miami, FL: Miami plan check runs on the 7th Edition Florida Building Code in the High-Velocity Hurricane Zone, and Helonic reads the issued 2D PDFs for Miami-Dade NOA product and 175 mph wind conflicts before the Building Department reviews the set.
- https://helonic.com/plan-check-in/tampa-fl - Plan Check in Tampa, FL: Tampa plan check runs on the 7th Edition Florida Building Code outside the High-Velocity Hurricane Zone, and Helonic reads the issued 2D PDFs for wind-load and coastal flood conflicts before the Construction Services Center reviews the set.
- https://helonic.com/plan-check-in/orlando-fl - Plan Check in Orlando, FL: Orlando plan check runs on the 7th Edition Florida Building Code, and Helonic reads the issued 2D PDFs for uplift connections shown in the details and missing from the framing plans before Permitting Services reviews the set.
- https://helonic.com/plan-check-in/jacksonville-fl - Plan Check in Jacksonville, FL: Jacksonville plan check runs on the 7th Edition Florida Building Code with Duval County amendments, and Helonic reads the issued 2D PDFs for coastal wind and flood conflicts before the Building Inspection Division reviews the set.
- https://helonic.com/plan-check-in/chicago-il - Plan Check in Chicago, IL: Chicago plan check runs on the Chicago Building Code in Municipal Code Title 14, not the IBC, and Helonic reads the issued 2D PDFs for the city's high-rise fire-safety rules before the Department of Buildings reviews the set.
- https://helonic.com/plan-check-in/seattle-wa - Plan Check in Seattle, WA: Seattle plan check runs on the 2021 Seattle Building Code, and Helonic reads the issued 2D PDFs for Cascadia seismic and Seattle Energy Code conflicts before SDCI reviews the set.
- https://helonic.com/plan-check-in/phoenix-az - Plan Check in Phoenix, AZ: Phoenix plan check runs on the 2018 IBC with city amendments, and Helonic reads the issued 2D PDFs for 115°F mechanical sizing and dust-storm air-handling conflicts before Planning and Development reviews the set.
- https://helonic.com/plan-check-in/denver-co - Plan Check in Denver, CO: Denver plan check runs on the 2021 Denver Building Code, and Helonic reads the issued 2D PDFs for Green Building Ordinance and electrification conflicts before Community Planning and Development reviews the set.
- https://helonic.com/plan-check-in/atlanta-ga - Plan Check in Atlanta, GA: Atlanta plan check runs on the 2018 Georgia State Minimum Standard Codes, and Helonic reads the issued 2D PDFs for grading or a footprint inside a protected tree root zone, and for BeltLine frontage the elevations do not meet, before the Office of Buildings reviews the set.
- https://helonic.com/plan-check-in/boston-ma - Plan Check in Boston, MA: Boston plan check runs on the 9th Edition Massachusetts State Building Code (780 CMR), and Helonic reads the issued 2D PDFs for coastal flood conflicts before Inspectional Services reviews the set.
- https://helonic.com/plan-check-in/portland-or - Plan Check in Portland, OR: Portland plan check runs on the 2021 Oregon Structural Specialty Code, and Helonic reads the issued 2D PDFs for Cascadia seismic and city stormwater conflicts before the Bureau of Development Services reviews the set.
- https://helonic.com/plan-check-in/las-vegas-nv - Plan Check in Las Vegas, NV: Las Vegas plan check for most of the Strip runs through unincorporated Clark County on the 2018 IBC, and Helonic reads the issued 2D PDFs for desert wind and extreme-heat mechanical conflicts before Clark County Building and Fire Prevention reviews the set.
- https://helonic.com/plan-check-in/nashville-tn - Plan Check in Nashville, TN: Nashville plan check runs on the 2018 IBC and IRC with Metro amendments, and Helonic reads the issued 2D PDFs for tornado-design and Cumberland River flood conflicts before Metro Codes reviews the set.
- https://helonic.com/plan-check-in/charlotte-nc - Plan Check in Charlotte, NC: Charlotte plan check runs on the 2018 North Carolina Building Code, and Helonic reads the issued 2D PDFs for stormwater that misses Mecklenburg's post-construction rules on built-upon area, peak control, and stream buffers before County Code Enforcement reviews the set.
- https://helonic.com/plan-check-in/washington-dc - Plan Check in Washington, DC: Washington plan check runs on the 2017 DC Construction Codes, and Helonic checks building and rooftop height against the Height Act, including mechanical penthouse setback and screening, before the Department of Buildings reviews the set.
- https://helonic.com/plan-check-in/philadelphia-pa - Plan Check in Philadelphia, PA: Philadelphia plan check runs on the Philadelphia Building Code based on the 2018 IBC, and Helonic reads the issued 2D PDFs for a party-wall foundation drawn with no underpinning before Licenses and Inspections reviews the set.
- https://helonic.com/plan-check-in/minneapolis-mn - Plan Check in Minneapolis, MN: Minneapolis plan check runs on the 2020 Minnesota State Building Code, and Helonic reads the issued 2D PDFs for frost-depth and cold-weather design conflicts before CPED reviews the set.
- https://helonic.com/plan-check-in/detroit-mi - Plan Check in Detroit, MI: Detroit plan check runs on the 2015 Michigan Building Code, and Helonic reads the issued 2D PDFs for a change-of-occupancy analysis that does not match the existing structure before BSEED reviews the set.
- https://helonic.com/plan-check-in/baltimore-md - Plan Check in Baltimore, MD: Baltimore plan check runs on the Maryland Building Performance Standards, and Helonic reads the issued 2D PDFs for a rehab scope that never documents the existing construction type before Housing and Community Development reviews the set.
- https://helonic.com/plan-check-in/raleigh-nc - Plan Check in Raleigh, NC: Raleigh plan check runs on the 2018 North Carolina Building Code, and Helonic reads the site plan for a tree-conservation area crossed by the footprint and for a Neuse River riparian buffer the plan does not show before Development Services reviews the set.
- https://helonic.com/plan-check-in/tucson-az - Plan Check in Tucson, AZ: Site work is where a Tucson set gets returned, so Helonic reads the civil, landscape, and grading sheets against the 2018 IBC with Tucson and Pima County amendments before Planning and Development Services does.
- https://helonic.com/plan-check-in/pittsburgh-pa - Plan Check in Pittsburgh, PA: A slope steep enough to need retaining walls and real borings is an ordinary Pittsburgh site condition, and Helonic reads the set for it before PLI ever opens the file.
- https://helonic.com/plan-check-in/albuquerque-nm - Plan Check in Albuquerque, NM: Helonic reconciles the mechanical schedule against altitude before an Albuquerque set reaches the Planning Department, because equipment rated at sea level does not deliver the same capacity at a mile up.
- https://helonic.com/plan-check-in/new-orleans-la - Plan Check in New Orleans, LA: Getting a building up above the base flood elevation while satisfying the Vieux Carre Commission or another historic district review is the constraint that shapes almost every New Orleans project, and Helonic reads a set against both at once.
- https://helonic.com/plan-check-in/columbus-oh - Plan Check in Columbus, OH: Snow and wind loads are moderate in central Ohio, so Helonic spends its Columbus pass elsewhere: process exhaust and hazardous materials classification on semiconductor fab work, electrical service and roof loading on data center sheets, detention sized to the Columbus Storm Water Design Manual, and the cross-discipline clashes that show up when a project this large is drawn by six firms at once.
- https://helonic.com/plan-check-in/indianapolis-in - Plan Check in Indianapolis, IN: Stormwater sized without the combined sewer overflow program is the comment Indianapolis writes most often, and Helonic flags it against the Indiana Building Code, still based on the 2012 IBC.
- https://helonic.com/plan-check-in/salt-lake-city-ut - Plan Check in Salt Lake City, UT: A fault line runs under the built-up part of Salt Lake City, so Seismic Design Category D or E governs nearly every set, and Helonic checks the lateral drawings against it.
- https://helonic.com/plan-check-in/kansas-city-mo - Plan Check in Kansas City, MO: The costliest Kansas City correction is the one on the cover sheet, where the set names the wrong jurisdiction, and Helonic starts by reading the drawings against the code that applies to the parcel.
- https://helonic.com/plan-check-in/st-louis-mo - Plan Check in St. Louis, MO: Seismic Design Category B or C is not a formality on a New Madrid site, and Helonic checks the lateral drawings against it before the Building Division does.
- https://helonic.com/plan-check-in/honolulu-hi - Plan Check in Honolulu, HI: DPP's backlog makes a bounced set expensive, so Helonic reads the Honolulu drawings against the 2018 IBC as amended by the City and County of Honolulu before intake.
- https://helonic.com/plan-check-in/anchorage-ak - Plan Check in Anchorage, AK: Missing a summer in Anchorage means the concrete goes in next year, so Helonic screens the set against the 2021 IBC with Anchorage amendments while there is still season left to use.
- https://helonic.com/plan-check-in/milwaukee-wi - Plan Check in Milwaukee, WI: Helonic reads every sheet of a Third Ward conversion, code sheet through details, in the time a reviewer spends on the cover page.
- https://helonic.com/plan-check-in/virginia-beach-va - Plan Check in Virginia Beach, VA: One pass over a Virginia Beach set starts with the two maps that constrain the parcel and works inward to the building, and Helonic runs it against the Virginia Uniform Statewide Building Code and its 2018 IBC base.
- https://helonic.com/plan-check-in/louisville-ky - Plan Check in Louisville, KY: The correction that arrives most reliably on a Louisville set puts mechanical and electrical equipment below the design flood elevation on an Ohio River floodplain site, and Helonic catches it against the Kentucky Building Code with Louisville-Jefferson County amendments before Develop Louisville does.
- https://helonic.com/plan-check-in/oklahoma-city-ok - Plan Check in Oklahoma City, OK: A two to six week review sounds comfortable until the second cycle lands on a project already leased, so Helonic screens an Oklahoma City set before the first submittal.
- https://helonic.com/plan-check-in/memphis-tn - Plan Check in Memphis, TN: Seismic governs a Memphis set in a way it governs almost no other Mid-South city, and Helonic screens it against the 2018 IBC as adopted by Tennessee with Shelby County amendments.
- https://helonic.com/plan-check-in/richmond-va - Plan Check in Richmond, VA: The correction that changes a Richmond design comes from historic district review rather than the building code, since the statewide USBC preempts local amendments, and Helonic screens for both.
- https://helonic.com/plan-check-in/fort-worth-tx - Plan Check in Fort Worth, TX: A shelter that has to meet ICC 500 cannot be dropped into a floor plan after the structure is priced, and Helonic flags the gap while the plan is still moving.
- https://helonic.com/plan-check-in/el-paso-tx - Plan Check in El Paso, TX: No hurricane wind zone, no floodplain elevation fight, no coastal corrosion schedule: El Paso runs on a different set of problems, and Helonic screens for the ones that actually apply.
- https://helonic.com/plan-check-in/fresno-ca - Plan Check in Fresno, CA: A Fresno process building has to hold temperature through a 110 degree design day and handle an ammonia charge in the same set, and Helonic reads both before Planning & Development does.
- https://helonic.com/plan-check-in/long-beach-ca - Plan Check in Long Beach, CA: Development Services returns waterfront sets drawn as though the coastal development permit were already in hand, and Helonic catches that before intake.
- https://helonic.com/plan-check-in/oakland-ca - Plan Check in Oakland, CA: An Oakland plan checker opens a set expecting the Hayward Fault to be answered in the structural drawings, and Helonic checks that first.
- https://helonic.com/plan-check-in/bakersfield-ca - Plan Check in Bakersfield, CA: Two to six weeks at the Building Division is fast for California, which means a Bakersfield correction cycle costs proportionally more of the schedule than the review itself does, so Helonic screens the set first.
- https://helonic.com/plan-check-in/anaheim-ca - Plan Check in Anaheim, CA: Helonic reconciles an Anaheim set against the Anaheim Resort specific plan and the 2022 CBC at the same time, because the overlay and the code both write on the same sheets.
- https://helonic.com/plan-check-in/riverside-ca - Plan Check in Riverside, CA: One pass over a Riverside set covers every sheet in minutes, and Helonic cross-checks the architectural, structural, and MEP drawings against each other and against the 2022 CBC with Riverside amendments.
- https://helonic.com/plan-check-in/irvine-ca - Plan Check in Irvine, CA: Community Development sends Irvine sets back over things a code reviewer elsewhere would never raise, most often design review items tied to the master plan guidelines, and Helonic screens for those alongside the 2022 CBC.
- https://helonic.com/plan-check-in/fort-lauderdale-fl - Plan Check in Fort Lauderdale, FL: A Building Services reviewer opens a Fort Lauderdale set looking for two things at once, HVHZ product approval on the envelope and defensible elevations at the water, and Helonic checks both.
- https://helonic.com/plan-check-in/st-petersburg-fl - Plan Check in St. Petersburg, FL: Water reaches St. Petersburg from Tampa Bay on one side and the Gulf approaches on the other, which makes flood elevation the governing number on most parcels, and Helonic checks it sheet by sheet.
- https://helonic.com/plan-check-in/sarasota-fl - Plan Check in Sarasota, FL: Exterior fixtures shown without shielding or a compliant lamp type is a correction the Building Department writes on barrier island work every season, and Helonic flags it against the sea turtle lighting ordinance first.
- https://helonic.com/plan-check-in/naples-fl - Plan Check in Naples, FL: On a high-value Naples house, a second review cycle costs a delivery date that is already committed, so Helonic screens the set before it is filed.
- https://helonic.com/plan-check-in/west-palm-beach-fl - Plan Check in West Palm Beach, FL: HVHZ provisions do not apply in West Palm Beach, since the zone stops at the Broward line, and Helonic screens for details imported across it.
- https://helonic.com/plan-check-in/plano-tx - Plan Check in Plano, TX: A headquarters relocation has a move-in date locked before the drawings start, so Helonic reads the Plano set while there is still fit-out float to protect.
- https://helonic.com/plan-check-in/frisco-tx - Plan Check in Frisco, TX: The pass is mechanical: Helonic reads every sheet in a Frisco set, holds the architectural egress plan against the structural and MEP sheets, and cites the sheet and the section on each finding.
- https://helonic.com/plan-check-in/scottsdale-az - Plan Check in Scottsdale, AZ: A Scottsdale correction often reads as a design finding rather than a code finding, so Helonic checks the technical set against the 2018 IBC with Scottsdale amendments and against the overlays the parcel carries.
- https://helonic.com/plan-check-in/mesa-az - Plan Check in Mesa, AZ: A Mesa plans examiner opens the set to see whether the drawings match the parcel, and Helonic runs that comparison first against the 2018 IBC with Mesa amendments.
- https://helonic.com/plan-check-in/gilbert-az - Plan Check in Gilbert, AZ: Helonic runs every sheet of a Gilbert submittal, each plan variant in a master-planned series included, and compares those variants against one another as well as against the 2018 IBC with Gilbert amendments.
- https://helonic.com/plan-check-in/charleston-sc - Plan Check in Charleston, SC: Raising a building above the flood elevation without losing Board of Architectural Review approval is the peninsula's central conflict, and Helonic reads a Charleston set against both.
- https://helonic.com/plan-check-in/savannah-ga - Plan Check in Savannah, GA: A reviewer opening a downtown Savannah set looks first at the ward and square geometry and the Historic District requirements, then at whether the coastal wind detailing is real, and Helonic checks that order too.
- https://helonic.com/plan-check-in/birmingham-al - Plan Check in Birmingham, AL: The correction Inspection Services writes most often on a Birmingham conversion is that the existing building analysis is missing, and Helonic checks for it first.
- https://helonic.com/plan-check-in/greenville-sc - Plan Check in Greenville, SC: Coastal wind zones and flood elevation rules, the two things that shape every Charleston and Savannah submittal, do almost nothing in Greenville, and Helonic retunes the screen accordingly.
- https://helonic.com/plan-check-in/columbia-sc - Plan Check in Columbia, SC: A resubmittal on a state or university project does not just cost review time, it slips a fiscal-year or academic-calendar milestone that will not move, and Helonic screens Columbia sets with that clock in mind.
- https://helonic.com/plan-check-in/durham-nc - Plan Check in Durham, NC: When a reviewer opens a Durham conversion set, the first question is what the existing structure can carry, and Helonic answers it from the drawings before submittal.
- https://helonic.com/plan-check-in/cincinnati-oh - Plan Check in Cincinnati, OH: A slope that moves takes the building with it, which is why Helonic starts a Cincinnati set on the site and structural sheets.
- https://helonic.com/plan-check-in/cleveland-oh - Plan Check in Cleveland, OH: What a Cleveland reviewer asks first is what the site used to be, and Helonic reads the drawings with the same question.
- https://helonic.com/plan-check-in/madison-wi - Plan Check in Madison, WI: Helonic compares a Madison laboratory set's mechanical drawings against the architectural and structural sheets and reports where they disagree: exhaust and containment the shaft layout cannot fit, hazardous materials quantities that push the control area count past what the plans show, and roof framing never rechecked for the units scheduled.
- https://helonic.com/plan-check-in/des-moines-ia - Plan Check in Des Moines, IA: Two to six weeks is a short plan check, so a single Des Moines correction cycle can double the permit portion of the schedule, and Helonic screens the set to keep it from going around twice.
- https://helonic.com/plan-check-in/omaha-ne - Plan Check in Omaha, NE: Design flood elevation decides more on an Omaha site than anything in the code text, so Helonic checks it first against the 2018 IBC with Nebraska and Omaha amendments.
- https://helonic.com/plan-check-in/boise-id - Plan Check in Boise, ID: Every correction cycle in Boise costs a place in a queue that growth has kept full, which is why Helonic screens the set against the 2018 IBC with Idaho and Boise amendments before intake.
- https://helonic.com/plan-check-in/spokane-wa - Plan Check in Spokane, WA: Cascadia detailing and marine corrosion notes carry little weight east of the Cascades, so Helonic screens a Spokane set against the 2021 Washington State Building Code with Spokane amendments instead.
- https://helonic.com/plan-check-in/colorado-springs-co - Plan Check in Colorado Springs, CO: Helonic parses a Colorado Springs set against the 2021 IBC with local amendments and reconciles what the sheets claim with what the site actually demands.
- https://helonic.com/plan-check-in/aurora-co - Plan Check in Aurora, CO: The Denver Building Code does not apply in Aurora, and neither does Denver's amendment package, so Helonic screens the set against the 2021 IBC with Aurora amendments instead.
- https://helonic.com/plan-check-in/reno-nv - Plan Check in Reno, NV: Reno is not southern Nevada, so Helonic checks a set here against the 2018 IBC with Washoe County amendments rather than the Southern Nevada Amendments that govern Clark County.
- https://helonic.com/plan-check-in/tacoma-wa - Plan Check in Tacoma, WA: Filled tideflat ground is the hardest thing to design around near the Port of Tacoma, so Helonic starts by comparing the geotechnical recommendations against what the structural sheets actually detail.
- https://helonic.com/plan-check-in/eugene-or - Plan Check in Eugene, OR: Helonic parses a Eugene set sheet by sheet against the 2021 Oregon Structural Specialty Code and the city's local requirements, then reports what will draw comments.
- https://helonic.com/plan-check-in/newark-nj - Plan Check in Newark, NJ: On a remediated Newark parcel, a foundation and slab drawn with no vapor mitigation and no tie to the environmental work is the comment that stops the job, and Helonic finds it first.
- https://helonic.com/plan-check-in/jersey-city-nj - Plan Check in Jersey City, NJ: Four to twelve weeks of plan check plus a correction cycle is real money on a Jersey City tower, so Helonic runs the set against the New Jersey Uniform Construction Code and its 2015 IBC base before anything is filed.
- https://helonic.com/plan-check-in/hartford-ct - Plan Check in Hartford, CT: A reviewer opening a Hartford set looks first for what is already there, because so much of the work is inside an existing office or institutional building, and Helonic checks the set the same way against the 2018 Connecticut State Building Code.
- https://helonic.com/plan-check-in/providence-ri - Plan Check in Providence, RI: The comment that comes back on a Providence mill conversion is almost always about the building that is already standing, and Helonic looks for that gap first, against the Rhode Island State Building Code and its 2015 IBC base.
- https://helonic.com/plan-check-in/portland-me - Plan Check in Portland, ME: Ground snow over 60 pounds per square foot with drift piling against every parapet and roof step is the load that decides a Portland roof, and Helonic checks the framing for it against the Maine Uniform Building and Energy Code.
- https://helonic.com/plan-check-in/burlington-vt - Plan Check in Burlington, VT: One pass over a Burlington set traces every envelope detail for continuity and every mechanical selection back to the energy documentation, and Helonic runs it against Vermont's commercial energy standards and the 2015 IBC.
- https://helonic.com/plan-check-in/baton-rouge-la - Plan Check in Baton Rouge, LA: A turnaround window is measured in days and priced in lost production, so a slipped review cycle costs more here than on a normal building, and Helonic screens Baton Rouge industrial sets accordingly.
- https://helonic.com/plan-check-in/jackson-ms - Plan Check in Jackson, MS: The comment that stops a Jackson project is not usually about the building; it is that the water and sewer capacity to serve it has not been demonstrated, and Helonic checks the utility side of a set first.
- https://helonic.com/plan-check-in/little-rock-ar - Plan Check in Little Rock, AR: The pass is a cross-check: Helonic compares the seismic criteria stated on the structural sheets against the detailing actually drawn, then reconciles architectural openings with shear wall locations, foundation details with the geotechnical recommendations for expansive soils, and lowest floor elevation with the Arkansas River flood requirement.
- https://helonic.com/plan-check-in/knoxville-tn - Plan Check in Knoxville, TN: Fifty or three hundred sheets, Helonic reads all of them against Tennessee's adopted 2018 IBC and IRC and cross-checks the civil set against the structural set, which is where Knoxville projects come apart.
- https://helonic.com/plan-check-in/chattanooga-tn - Plan Check in Chattanooga, TN: A Chattanooga reviewer opens the set at the site, because the mountains and the river decide what fits before the building does, and Helonic reads it in that same order against Tennessee's adopted 2018 I-Codes.
- https://helonic.com/plan-check-in/henderson-nv - Plan Check in Henderson, NV: Clark County does not review Henderson projects, so Helonic checks the set against the 2018 IBC and IRC with Henderson amendments and the city's own submittal requirements.
- https://helonic.com/plan-check-in/chandler-az - Plan Check in Chandler, AZ: Helonic reconciles the process utility drawings against the architectural and structural sheets on a Chandler submittal, then tests the whole set against the 2018 IBC with Chandler amendments.
- https://helonic.com/plan-check-in/tempe-az - Plan Check in Tempe, AZ: Student housing has to open in August or it sits empty for a year, and Helonic screens Tempe sets against the 2018 IBC with Tempe amendments so a correction cycle does not take that date away.
- https://helonic.com/plan-check-in/stamford-ct - Plan Check in Stamford, CT: Helonic compares the architectural, structural, and MEP sets of a Stamford project against each other and against the 2018 Connecticut State Building Code before the Building Department opens them.
- https://helonic.com/plan-check-in/cambridge-ma - Plan Check in Cambridge, MA: A reviewer opening a Cambridge lab set counts control areas and follows the exhaust, and Helonic reads it in that order against the 9th Edition Massachusetts State Building Code, 780 CMR.
- https://helonic.com/plan-check-in/hoboken-nj - Plan Check in Hoboken, NJ: Lifting a first floor above the design flood elevation while the building shares both party walls and faces a historic street is the Hoboken problem, and Helonic screens for it against the New Jersey Uniform Construction Code and its 2015 IBC base.
- https://helonic.com/plan-check-in/wichita-ks - Plan Check in Wichita, KS: A Wichita reviewer opens the structural sheets looking for a wind load path that was drawn rather than assumed, and Helonic checks the same thing against the 2018 IBC with Kansas and Wichita amendments.
- https://helonic.com/plan-check-in/tulsa-ok - Plan Check in Tulsa, OK: Helonic reconciles a Tulsa set's architectural, structural, and MEP sheets against the 2015 IBC and IRC with Oklahoma and Tulsa amendments, then reports the gaps.
- https://helonic.com/plan-check-in/sioux-falls-sd - Plan Check in Sioux Falls, SD: One pass over a Sioux Falls hospital set touches several hundred sheets, and Helonic checks them all against the 2018 IBC with South Dakota amendments in minutes.
- https://helonic.com/plan-check-in/fargo-nd - Plan Check in Fargo, ND: Finished floor elevation is the Fargo correction that costs the most to fix, because raising it moves grading, accessible routes, and structure at once, and Helonic checks it against the 2018 IBC with North Dakota amendments before the set goes in.
- https://helonic.com/plan-check-in/maui-hi - Plan Check in Maui, HI: One pass covers every sheet in the set in minutes, and Helonic uses it to cross-check the architectural, structural, and mechanical drawings against each other and against the 2018 IBC with Maui County amendments.
- https://helonic.com/plan-check-in/fairbanks-ak - Plan Check in Fairbanks, AK: Continuous permafrost is the constraint everything else in a Fairbanks set answers to, and Helonic starts there, checking whether the foundation on the drawings matches its geotechnical basis.
- https://helonic.com/plan-check-in/norfolk-va - Plan Check in Norfolk, VA: The reviewer opening a Norfolk set checks elevations before anything else, because recurrent tidal flooding and rapid relative sea level rise put real pressure on freeboard here, and Helonic reads the drawings the same way.
- https://helonic.com/plan-check-in/lexington-ky - Plan Check in Lexington, KY: Land supply is the constraint on Lexington projects, since the Urban Service Boundary holds development inside a fixed footprint and pushes work onto tight infill parcels, and Helonic screens those sets against the Kentucky Building Code with Lexington-Fayette County amendments.
- https://helonic.com/plan-check-in/madison-al - Plan Check in Madison, AL: None of the aerospace, defense laboratory, or federal headquarters work that Huntsville's inspections staff sees every week shows up in Madison, and Helonic tunes the screen to what this department actually reviews.
- https://helonic.com/plan-check-in/huntsville-al - Plan Check in Huntsville, AL: Helonic reconciles the architectural, mechanical, and electrical sets against each other on a Huntsville research or test facility, where the risk lives in coordination rather than any single sheet.
- https://helonic.com/plan-check-in/bozeman-mt - Plan Check in Bozeman, MT: A structural comment is waiting for any Bozeman set that checks roof framing for a flat 50 psf and never addresses drift at parapets, roof steps, or mechanical screens, and Helonic catches that before submittal.
- https://helonic.com/plan-check-in/santa-fe-nm - Plan Check in Santa Fe, NM: A Santa Fe reviewer reaches the elevations before the code analysis, and Helonic reads them against the city's style and historic district requirements first.
- https://helonic.com/plan-check-in/charleston-wv - Plan Check in Charleston, WV: Helonic reads a Charleston set for the two constraints that shrink a site here before it reads the building, working from the West Virginia State Fire Code and Building Code and its 2015 IBC base.
- https://helonic.com/plan-check-in/tallahassee-fl - Plan Check in Tallahassee, FL: HVHZ product approval and coastal surge have no bearing on a Tallahassee project, and inland wind speeds here run well below the peninsula's, so Helonic puts the weight where Growth Management does.
- https://helonic.com/plan-check-in/gainesville-fl - Plan Check in Gainesville, FL: Helonic compares the structural sheets of a Gainesville set against what the geotechnical report actually says about karst voids beneath the parcel, then works through the 7th Edition Florida Building Code with Alachua County amendments the way Building Inspection will.
- https://helonic.com/plan-check-in/pensacola-fl - Plan Check in Pensacola, FL: One pass over a Pensacola set covers four maps at once, and Helonic makes it against the 7th Edition Florida Building Code with Escambia County amendments: the wind exposure for a western panhandle Gulf site, the flood zone along Pensacola Bay, the NAS Pensacola compatibility zones, and the Palafox historic district.
- https://helonic.com/plan-check-in/wilmington-nc - Plan Check in Wilmington, NC: The Wilmington correction that costs the most is a site plan that ignored CAMA jurisdiction, setbacks, or wetland limits, and Helonic checks the site sheets against those constraints first.
- https://helonic.com/plan-check-in/asheville-nc - Plan Check in Asheville, NC: Terrain is the constraint that decides Asheville projects, so Helonic reads the grading, retaining, and drainage sheets against the building set before Development Services does.
- https://helonic.com/plan-check-in/sierra-vista-az - Plan Check in Sierra Vista, AZ: Several things a Phoenix-area set worries about do not govern in Sierra Vista, and Helonic reads the drawings against the 2018 IBC with Cochise County amendments that do.
- https://helonic.com/plan-check-in/san-bernardino-ca - Plan Check in San Bernardino, CA: A million square foot fulfillment building in San Bernardino carries more fire protection risk than architectural risk, and Helonic reads it that way.
- https://helonic.com/plan-check-in/santa-rosa-ca - Plan Check in Santa Rosa, CA: The first thing a Santa Rosa reviewer looks for on a rebuild is Chapter 7A compliance carried all the way through the exterior details, and Helonic checks that before submittal.
- https://helonic.com/plan-check-in/stockton-ca - Plan Check in Stockton, CA: Helonic traces a Stockton set from the flood elevation down, comparing the civil grading plan, the architectural finished floor, and the height of mechanical and electrical equipment before Community Development opens it.
- https://helonic.com/plan-check-in/modesto-ca - Plan Check in Modesto, CA: No coastal commission, no wildland interface mandate, no soft-story ordinance: Modesto drops most of the overlays that dominate coastal California, and Helonic spends the pass where the risk actually is.
- https://helonic.com/plan-check-in/bellevue-wa - Plan Check in Bellevue, WA: A Bellevue reviewer opening a tower set checks whether the typical floor resolves, and Helonic checks the same thing first: core walls that line up, a Seismic Design Category D load path continuous from roof diaphragm to mat foundation, shafts that match the mechanical risers, and rated assemblies detailed the same way twice.
- https://helonic.com/plan-check-in/redmond-wa - Plan Check in Redmond, WA: A multi-building Redmond submittal can tie up a small review group for weeks and then bounce, which is the whole schedule risk, so Helonic screens it first.
- https://helonic.com/plan-check-in/san-juan-pr - Plan Check in San Juan, PR: The first thing an OGPe reviewer looks for is a load path that survives both a 170 mph ultimate wind event and a design earthquake, and Helonic checks that path element by element against the 2018 IBC with Puerto Rico amendments.
- https://helonic.com/plan-check-in/provo-ut - Plan Check in Provo, UT: In one pass over a Provo set, Helonic compares the architectural plans against the structural and mechanical sheets and reports what does not line up.
- https://helonic.com/plan-check-in/bend-or - Plan Check in Bend, OR: The comment a Bend reviewer writes most often names an exterior assembly with no wildland urban interface rating, and Helonic catches that one along with footings detailed without regard to pumice and lava rock bearing conditions and roofs framed below the 30 psf ground snow load.
- https://helonic.com/plan-check-in/missoula-mt - Plan Check in Missoula, MT: A Missoula reviewer opening a set checks the flood elevation and the ventilation design early, and Helonic runs the same checks first.
- https://helonic.com/plan-check-in/cheyenne-wy - Plan Check in Cheyenne, WY: Wind sets the structure in Cheyenne before anything else does, so Helonic starts with uplift and lateral resistance when it reads a set here.
- https://helonic.com/plan-check-in/rapid-city-sd - Plan Check in Rapid City, SD: The first thing a Rapid City reviewer checks on a hillside parcel is whether the foundations match the rock actually found there, and Helonic looks for the same disagreement between the soils report and the structural sheets.
- https://helonic.com/plan-check-in/bismarck-nd - Plan Check in Bismarck, ND: The construction season here runs roughly May through October, so a correction that pushes a foundation past freeze-up costs a year rather than a month, and Helonic screens a Bismarck set before that happens.
- https://helonic.com/plan-check-in/billings-mt - Plan Check in Billings, MT: Helonic reconciles the architectural, structural, and fire protection sheets of a Billings set against the 2018 IBC with Montana amendments.
- https://helonic.com/plan-check-in/arlington-tx - Plan Check in Arlington, TX: An Arlington reviewer opening a set near the Entertainment District goes to the occupant load table first, and Helonic checks that table against the plan before the submittal.
- https://helonic.com/plan-check-in/irving-tx - Plan Check in Irving, TX: The correction that costs an Irving project a cycle is often the simplest one, a set drawn to the wrong code edition, and Helonic checks the drawings against the edition in force before the set is filed.
- https://helonic.com/plan-check-in/cape-coral-fl - Plan Check in Cape Coral, FL: Helonic reconciles a Cape Coral set against the Florida Building Code, 8th Edition (2023) and the ASCE 7-22 wind loads it brings, which is not the edition most of the state is working from.
- https://helonic.com/plan-check-in/glendale-az - Plan Check in Glendale, AZ: The hardest thing about a Glendale submittal right now is the code edition, and Helonic checks the set against the 2024 I-Codes and 2023 NEC the Building Safety Division adopted rather than the 2018 editions still in force nearby.
- https://helonic.com/plan-check-in/chula-vista-ca - Plan Check in Chula Vista, CA: Grading has to be certified before Chula Vista will issue a building permit, so a civil sheet that does not match the architectural set stops the job rather than costing a redline, and Helonic checks that pairing first.
- https://helonic.com/plan-check-in/santa-ana-ca - Plan Check in Santa Ana, CA: Every sheet goes through in one pass, and for Santa Ana Helonic runs that pass against the 2025 California Building Standards Code rather than the 2022 edition most of the state is still drawing to.
- https://helonic.com/plan-check-in/greensboro-nc - Plan Check in Greensboro, NC: Helonic compares the racking and storage layout against the sprinkler design on a Greensboro warehouse set, which is where a distribution building's review is actually decided.
- https://helonic.com/plan-check-in/fort-collins-co - Plan Check in Fort Collins, CO: A set drawn to the wrong code edition is the most expensive mistake available in Fort Collins right now, because the 2024 IBC took effect April 1, 2026 and the 2021 IBC still governs earlier submittals, so Helonic checks the drawings against the edition that actually applies to the submittal date.
- https://helonic.com/plan-check-in/corpus-christi-tx - Plan Check in Corpus Christi, TX: Design wind speeds on the Gulf and a storm surge elevation decide a Corpus Christi project before anything else does, and Helonic screens the set against both.
- https://helonic.com/plan-check-in/buffalo-ny - Plan Check in Buffalo, NY: None of the New York City Building Code applies in Buffalo, and a set citing NYC sections or Local Laws is the fastest way to lose a review cycle, so Helonic checks the drawings against the 2025 New York State Uniform Code instead.
- https://helonic.com/plan-check-in/grand-rapids-mi - Plan Check in Grand Rapids, MI: Helonic parses a Grand Rapids submittal the way the Development Center's ePlan Room receives it, sheet by sheet, against the Michigan Building Code based on the 2015 IBC.
- https://helonic.com/plan-check-in/winston-salem-nc - Plan Check in Winston-Salem, NC: Three documents decide a Winston-Salem conversion review, and Helonic checks all three against the drawings: the change of occupancy analysis, the structural evaluation of the existing building, and the mechanical routing through a structure with no shafts.
- https://helonic.com/plan-check-in/boulder-co - Plan Check in Boulder, CO: All-electric is the requirement that reorganizes a Boulder set, since the 2024 CoBECC removes gas from new buildings with limited exceptions and reaches heating, water heating, cooking, and the electrical service together, and Helonic screens for it before Planning and Development Services does.
- https://helonic.com/plan-check-in/worcester-ma - Plan Check in Worcester, MA: Helonic checks a Worcester set against the edition and the energy path that actually apply, which is the 780 CMR 10th Edition with IECC 2021-based provisions and, where the opt-in applies, the Stretch or Specialized code.
- https://helonic.com/plan-check-in/alexandria-va - Plan Check in Alexandria, VA: About twenty business days of plan review and a 35 percent deposit against the estimated permit fee make a wasted Alexandria cycle expensive on a small project, so Helonic screens the set against the 2021 Virginia Uniform Statewide Building Code first.
- https://helonic.com/plan-check-in/north-las-vegas-nv - Plan Check in North Las Vegas, NV: The correction that shows up on North Las Vegas sets drawn from a neighbouring city's template is a code sheet citing the 2018 I-Codes, and Helonic catches the edition mismatch before intake.

## Code-Specific Compliance Checks (15 codes x 7 disciplines)

- https://helonic.com/code-check - Code Checks: Index of code-specific compliance checking pages for every combination of building code and construction discipline.
- https://helonic.com/code-check/ibc-architectural - IBC Architectural Check: Helonic checks architectural sheets against IBC occupancy, height and area, means of egress, fire-resistance ratings, and Chapter 11 accessibility before plan check.
- https://helonic.com/code-check/ibc-structural - IBC Structural Check: Helonic checks structural sheets against IBC Chapter 16 loads, ASCE 7 seismic and wind, foundations, and Chapter 17 special inspections.
- https://helonic.com/code-check/ibc-mep - IBC MEP Check: Helonic checks mechanical, plumbing, and electrical sheets against IBC Chapters 27 through 29, including rated penetrations, shaft enclosures, and emergency power.
- https://helonic.com/code-check/irc-architectural - IRC Architectural Check: Helonic checks architectural drawings against the International Residential Code: The companion code to the IBC for one- and two-family dwellings and townhouses up to three stories.
- https://helonic.com/code-check/ada-architectural - ADA Architectural Check: Helonic checks architectural sheets against the 2010 ADA Standards for accessible routes, door clearances, ramps, restrooms, parking, and protruding objects.
- https://helonic.com/code-check/nfpa-fire-protection - NFPA Fire Protection Check: Helonic checks fire protection sheets against NFPA 13 sprinkler spacing and hazard classification and NFPA 72 detector spacing and alarm power.
- https://helonic.com/code-check/nec-electrical - NEC Electrical Check: Helonic checks electrical sheets against NEC branch-circuit and feeder sizing, 110.26 working clearances, Article 250 grounding, and GFCI and AFCI rules.
- https://helonic.com/code-check/cbc-architectural - CBC Architectural Check: Helonic checks architectural drawings against the California Building Code (Title 24 Part 2): California's state building code based on the IBC with extensive California-specific amendments for seismic, energy, accessibility, and green building requirements.
- https://helonic.com/code-check/nfpa-101-architectural - NFPA 101 Architectural Check: Helonic checks architectural sheets against NFPA 101 means of egress, occupancy classification, corridor and dead-end limits, and healthcare Chapters 18 and 19.
- https://helonic.com/code-check/title-24-architectural - Title 24 Architectural Check: Helonic checks architectural sheets against California Title 24 Part 6 envelope U-factor and SHGC, cool roof, air barrier, and solar-ready zone rules.
- https://helonic.com/code-check/ashrae-90-1-mechanical - ASHRAE 90.1 Mechanical Check: Helonic checks mechanical sheets against ASHRAE 90.1 equipment efficiency, economizers, energy recovery, and fan power limits.
- https://helonic.com/code-check/ibc-electrical - IBC Electrical Check: Helonic checks electrical sheets against IBC: electrical requirements per IBC Chapter 27 referencing NFPA 70 (NEC), emergency power and legally required standby per IBC 2702, and fire alarm system requirements per IBC 907.
- https://helonic.com/code-check/ibc-plumbing - IBC Plumbing Check: Helonic checks plumbing drawings against IBC Chapter 29 and the IPC it adopts: occupant-based fixture counts from Table 2902.1, accessible fixtures from Chapter 11, grease interceptors at food service, and storm drainage that has to land on the civil sheets.
- https://helonic.com/code-check/ibc-mechanical - IBC Mechanical Check: Helonic checks mechanical sheets against IBC: mechanical requirements per IBC Chapter 28 referencing IMC, ventilation per IMC Chapter 4 referencing ASHRAE 62.1, and smoke control systems per IBC 909.
- https://helonic.com/code-check/ibc-fire-protection - IBC Fire Protection Check: Helonic checks fire protection sheets against IBC: automatic sprinkler requirements per IBC 903 referencing NFPA 13, fire alarm and detection per IBC 907 referencing NFPA 72, and standpipe systems per IBC 905.
- https://helonic.com/code-check/irc-structural - IRC Structural Check: Helonic checks structural drawings against the International Residential Code: The companion code to the IBC for one- and two-family dwellings and townhouses up to three stories.
- https://helonic.com/code-check/irc-mep - IRC MEP Check: Helonic checks MEP drawings against the International Residential Code: The companion code to the IBC for one- and two-family dwellings and townhouses up to three stories.
- https://helonic.com/code-check/irc-electrical - IRC Electrical Check: Helonic checks electrical drawings against the International Residential Code: The companion code to the IBC for one- and two-family dwellings and townhouses up to three stories.
- https://helonic.com/code-check/irc-plumbing - IRC Plumbing Check: Helonic checks plumbing drawings against the International Residential Code: The companion code to the IBC for one- and two-family dwellings and townhouses up to three stories.
- https://helonic.com/code-check/irc-mechanical - IRC Mechanical Check: Helonic checks mechanical drawings against the International Residential Code: The companion code to the IBC for one- and two-family dwellings and townhouses up to three stories.
- https://helonic.com/code-check/irc-fire-protection - IRC Fire Protection Check: Helonic checks fire protection drawings against the International Residential Code: The companion code to the IBC for one- and two-family dwellings and townhouses up to three stories.
- https://helonic.com/code-check/cbc-structural - CBC Structural Check: Helonic checks structural drawings against the California Building Code (Title 24 Part 2): California's state building code based on the IBC with extensive California-specific amendments for seismic, energy, accessibility, and green building requirements.
- https://helonic.com/code-check/cbc-mep - CBC MEP Check: Helonic checks MEP drawings against the California Building Code (Title 24 Part 2): California's state building code based on the IBC with extensive California-specific amendments for seismic, energy, accessibility, and green building requirements.
- https://helonic.com/code-check/cbc-electrical - CBC Electrical Check: Helonic checks electrical drawings against the California Building Code (Title 24 Part 2): California's state building code based on the IBC with extensive California-specific amendments for seismic, energy, accessibility, and green building requirements.
- https://helonic.com/code-check/cbc-plumbing - CBC Plumbing Check: Helonic checks plumbing drawings against the California Building Code (Title 24 Part 2): California's state building code based on the IBC with extensive California-specific amendments for seismic, energy, accessibility, and green building requirements.
- https://helonic.com/code-check/cbc-mechanical - CBC Mechanical Check: Helonic checks mechanical drawings against the California Building Code (Title 24 Part 2): California's state building code based on the IBC with extensive California-specific amendments for seismic, energy, accessibility, and green building requirements.
- https://helonic.com/code-check/cbc-fire-protection - CBC Fire Protection Check: Helonic checks fire protection drawings against the California Building Code (Title 24 Part 2): California's state building code based on the IBC with extensive California-specific amendments for seismic, energy, accessibility, and green building requirements.
- https://helonic.com/code-check/fbc-architectural - FBC Architectural Check: Helonic checks architectural drawings against the Florida Building Code: Florida's state building code with the most stringent wind and hurricane resistance requirements in the continental US.
- https://helonic.com/code-check/fbc-structural - FBC Structural Check: Helonic checks structural drawings against the Florida Building Code: Florida's state building code with the most stringent wind and hurricane resistance requirements in the continental US.
- https://helonic.com/code-check/fbc-mep - FBC MEP Check: Helonic checks MEP drawings against the Florida Building Code: Florida's state building code with the most stringent wind and hurricane resistance requirements in the continental US.
- https://helonic.com/code-check/fbc-electrical - FBC Electrical Check: Helonic checks electrical drawings against the Florida Building Code: Florida's state building code with the most stringent wind and hurricane resistance requirements in the continental US.
- https://helonic.com/code-check/fbc-plumbing - FBC Plumbing Check: Helonic checks plumbing drawings against the Florida Building Code: Florida's state building code with the most stringent wind and hurricane resistance requirements in the continental US.
- https://helonic.com/code-check/fbc-mechanical - FBC Mechanical Check: Helonic checks mechanical drawings against the Florida Building Code: Florida's state building code with the most stringent wind and hurricane resistance requirements in the continental US.
- https://helonic.com/code-check/fbc-fire-protection - FBC Fire Protection Check: Helonic checks fire protection drawings against the Florida Building Code: Florida's state building code with the most stringent wind and hurricane resistance requirements in the continental US.
- https://helonic.com/code-check/nec-architectural - NEC Architectural Check: Helonic checks architectural drawings against the National Electrical Code (NFPA 70): The US standard for electrical installations including wiring, overcurrent protection, grounding, and equipment.
- https://helonic.com/code-check/nec-structural - NEC Structural Check: Helonic checks structural drawings against the National Electrical Code (NFPA 70): The US standard for electrical installations including wiring, overcurrent protection, grounding, and equipment.
- https://helonic.com/code-check/nec-mep - NEC MEP Check: Helonic checks MEP drawings against the National Electrical Code (NFPA 70): The US standard for electrical installations including wiring, overcurrent protection, grounding, and equipment.
- https://helonic.com/code-check/nec-plumbing - NEC Plumbing Check: Helonic checks plumbing drawings against the National Electrical Code (NFPA 70): The US standard for electrical installations including wiring, overcurrent protection, grounding, and equipment.
- https://helonic.com/code-check/nec-mechanical - NEC Mechanical Check: Helonic checks mechanical drawings against the National Electrical Code (NFPA 70): The US standard for electrical installations including wiring, overcurrent protection, grounding, and equipment.
- https://helonic.com/code-check/nec-fire-protection - NEC Fire Protection Check: Helonic checks fire protection drawings against the National Electrical Code (NFPA 70): The US standard for electrical installations including wiring, overcurrent protection, grounding, and equipment.
- https://helonic.com/code-check/nfpa-architectural - NFPA Architectural Check: Helonic checks architectural drawings against the NFPA 13 / 72 (Fire Protection Standards): NFPA 13 covers automatic sprinkler system design and installation.
- https://helonic.com/code-check/nfpa-structural - NFPA Structural Check: Helonic checks structural drawings against the NFPA 13 / 72 (Fire Protection Standards): NFPA 13 covers automatic sprinkler system design and installation.
- https://helonic.com/code-check/nfpa-mep - NFPA MEP Check: Helonic checks MEP drawings against the NFPA 13 / 72 (Fire Protection Standards): NFPA 13 covers automatic sprinkler system design and installation.
- https://helonic.com/code-check/nfpa-electrical - NFPA Electrical Check: Helonic checks electrical drawings against the NFPA 13 / 72 (Fire Protection Standards): NFPA 13 covers automatic sprinkler system design and installation.
- https://helonic.com/code-check/nfpa-plumbing - NFPA Plumbing Check: Helonic checks plumbing drawings against the NFPA 13 / 72 (Fire Protection Standards): NFPA 13 covers automatic sprinkler system design and installation.
- https://helonic.com/code-check/nfpa-mechanical - NFPA Mechanical Check: Helonic checks mechanical drawings against the NFPA 13 / 72 (Fire Protection Standards): NFPA 13 covers automatic sprinkler system design and installation.
- https://helonic.com/code-check/ada-structural - ADA Structural Check: Helonic checks structural drawings against the ADA Standards for Accessible Design: Federal accessibility standards required for all public accommodations and commercial facilities.
- https://helonic.com/code-check/ada-mep - ADA MEP Check: Helonic checks MEP drawings against the ADA Standards for Accessible Design: Federal accessibility standards required for all public accommodations and commercial facilities.
- https://helonic.com/code-check/ada-electrical - ADA Electrical Check: Helonic checks electrical drawings against the ADA Standards for Accessible Design: Federal accessibility standards required for all public accommodations and commercial facilities.
- https://helonic.com/code-check/ada-plumbing - ADA Plumbing Check: Helonic checks plumbing drawings against the ADA Standards for Accessible Design: Federal accessibility standards required for all public accommodations and commercial facilities.
- https://helonic.com/code-check/ada-mechanical - ADA Mechanical Check: Helonic checks mechanical drawings against the ADA Standards for Accessible Design: Federal accessibility standards required for all public accommodations and commercial facilities.
- https://helonic.com/code-check/ada-fire-protection - ADA Fire Protection Check: Helonic checks fire protection drawings against the ADA Standards for Accessible Design: Federal accessibility standards required for all public accommodations and commercial facilities.
- https://helonic.com/code-check/ipc-architectural - IPC Architectural Check: Helonic checks architectural drawings against the International Plumbing Code: The model plumbing code covering water supply, drainage, venting, fixtures, and medical gas systems.
- https://helonic.com/code-check/ipc-structural - IPC Structural Check: Helonic checks structural drawings against the International Plumbing Code: The model plumbing code covering water supply, drainage, venting, fixtures, and medical gas systems.
- https://helonic.com/code-check/ipc-mep - IPC MEP Check: Helonic checks MEP drawings against the International Plumbing Code: The model plumbing code covering water supply, drainage, venting, fixtures, and medical gas systems.
- https://helonic.com/code-check/ipc-electrical - IPC Electrical Check: Helonic checks electrical drawings against the International Plumbing Code: The model plumbing code covering water supply, drainage, venting, fixtures, and medical gas systems.
- https://helonic.com/code-check/ipc-plumbing - IPC Plumbing Check: Helonic checks plumbing drawings against the International Plumbing Code: The model plumbing code covering water supply, drainage, venting, fixtures, and medical gas systems.
- https://helonic.com/code-check/ipc-mechanical - IPC Mechanical Check: Helonic checks mechanical drawings against the International Plumbing Code: The model plumbing code covering water supply, drainage, venting, fixtures, and medical gas systems.
- https://helonic.com/code-check/ipc-fire-protection - IPC Fire Protection Check: Helonic checks fire protection drawings against the International Plumbing Code: The model plumbing code covering water supply, drainage, venting, fixtures, and medical gas systems.
- https://helonic.com/code-check/imc-architectural - IMC Architectural Check: Helonic checks architectural drawings against the International Mechanical Code: The model mechanical code for HVAC systems, exhaust, duct construction, hydronic systems, and refrigeration.
- https://helonic.com/code-check/imc-structural - IMC Structural Check: Helonic checks structural drawings against the International Mechanical Code: The model mechanical code for HVAC systems, exhaust, duct construction, hydronic systems, and refrigeration.
- https://helonic.com/code-check/imc-mep - IMC MEP Check: Helonic checks MEP drawings against the International Mechanical Code: The model mechanical code for HVAC systems, exhaust, duct construction, hydronic systems, and refrigeration.
- https://helonic.com/code-check/imc-electrical - IMC Electrical Check: Helonic checks electrical drawings against the International Mechanical Code: The model mechanical code for HVAC systems, exhaust, duct construction, hydronic systems, and refrigeration.
- https://helonic.com/code-check/imc-plumbing - IMC Plumbing Check: Helonic checks plumbing drawings against the International Mechanical Code: The model mechanical code for HVAC systems, exhaust, duct construction, hydronic systems, and refrigeration.
- https://helonic.com/code-check/imc-mechanical - IMC Mechanical Check: Helonic checks mechanical drawings against the International Mechanical Code: The model mechanical code for HVAC systems, exhaust, duct construction, hydronic systems, and refrigeration.
- https://helonic.com/code-check/imc-fire-protection - IMC Fire Protection Check: Helonic checks fire protection drawings against the International Mechanical Code: The model mechanical code for HVAC systems, exhaust, duct construction, hydronic systems, and refrigeration.
- https://helonic.com/code-check/iecc-architectural - IECC Architectural Check: Helonic checks architectural drawings against the International Energy Conservation Code: The model energy code setting minimum efficiency requirements for building envelopes, mechanical systems, lighting, and service water heating.
- https://helonic.com/code-check/iecc-structural - IECC Structural Check: Helonic checks structural drawings against the International Energy Conservation Code: The model energy code setting minimum efficiency requirements for building envelopes, mechanical systems, lighting, and service water heating.
- https://helonic.com/code-check/iecc-mep - IECC MEP Check: Helonic checks MEP drawings against the International Energy Conservation Code: The model energy code setting minimum efficiency requirements for building envelopes, mechanical systems, lighting, and service water heating.
- https://helonic.com/code-check/iecc-electrical - IECC Electrical Check: Helonic checks electrical drawings against the International Energy Conservation Code: The model energy code setting minimum efficiency requirements for building envelopes, mechanical systems, lighting, and service water heating.
- https://helonic.com/code-check/iecc-plumbing - IECC Plumbing Check: Helonic checks plumbing drawings against the International Energy Conservation Code: The model energy code setting minimum efficiency requirements for building envelopes, mechanical systems, lighting, and service water heating.
- https://helonic.com/code-check/iecc-mechanical - IECC Mechanical Check: Helonic checks mechanical drawings against the International Energy Conservation Code: The model energy code setting minimum efficiency requirements for building envelopes, mechanical systems, lighting, and service water heating.
- https://helonic.com/code-check/iecc-fire-protection - IECC Fire Protection Check: Helonic checks fire protection drawings against the International Energy Conservation Code: The model energy code setting minimum efficiency requirements for building envelopes, mechanical systems, lighting, and service water heating.
- https://helonic.com/code-check/asce7-architectural - ASCE 7 Architectural Check: Helonic checks architectural drawings against the ASCE 7 - Minimum Design Loads and Associated Criteria: The reference standard for structural loads: dead, live, wind, snow, seismic, rain, flood, and ice.
- https://helonic.com/code-check/asce7-structural - ASCE 7 Structural Check: Helonic checks structural drawings against the ASCE 7 - Minimum Design Loads and Associated Criteria: The reference standard for structural loads: dead, live, wind, snow, seismic, rain, flood, and ice.
- https://helonic.com/code-check/asce7-mep - ASCE 7 MEP Check: Helonic checks MEP drawings against the ASCE 7 - Minimum Design Loads and Associated Criteria: The reference standard for structural loads: dead, live, wind, snow, seismic, rain, flood, and ice.
- https://helonic.com/code-check/asce7-electrical - ASCE 7 Electrical Check: Helonic checks electrical drawings against the ASCE 7 - Minimum Design Loads and Associated Criteria: The reference standard for structural loads: dead, live, wind, snow, seismic, rain, flood, and ice.
- https://helonic.com/code-check/asce7-plumbing - ASCE 7 Plumbing Check: Helonic checks plumbing drawings against the ASCE 7 - Minimum Design Loads and Associated Criteria: The reference standard for structural loads: dead, live, wind, snow, seismic, rain, flood, and ice.
- https://helonic.com/code-check/asce7-mechanical - ASCE 7 Mechanical Check: Helonic checks mechanical drawings against the ASCE 7 - Minimum Design Loads and Associated Criteria: The reference standard for structural loads: dead, live, wind, snow, seismic, rain, flood, and ice.
- https://helonic.com/code-check/asce7-fire-protection - ASCE 7 Fire Protection Check: Helonic checks fire protection drawings against the ASCE 7 - Minimum Design Loads and Associated Criteria: The reference standard for structural loads: dead, live, wind, snow, seismic, rain, flood, and ice.
- https://helonic.com/code-check/nyc-bc-architectural - NYC BC Architectural Check: Helonic checks architectural drawings against the New York City Building Code: New York City's independent building code with NYC-specific requirements that differ significantly from the IBC.
- https://helonic.com/code-check/nyc-bc-structural - NYC BC Structural Check: Helonic checks structural drawings against the New York City Building Code: New York City's independent building code with NYC-specific requirements that differ significantly from the IBC.
- https://helonic.com/code-check/nyc-bc-mep - NYC BC MEP Check: Helonic checks MEP drawings against the New York City Building Code: New York City's independent building code with NYC-specific requirements that differ significantly from the IBC.
- https://helonic.com/code-check/nyc-bc-electrical - NYC BC Electrical Check: Helonic checks electrical drawings against the New York City Building Code: New York City's independent building code with NYC-specific requirements that differ significantly from the IBC.
- https://helonic.com/code-check/nyc-bc-plumbing - NYC BC Plumbing Check: Helonic checks plumbing drawings against the New York City Building Code: New York City's independent building code with NYC-specific requirements that differ significantly from the IBC.
- https://helonic.com/code-check/nyc-bc-mechanical - NYC BC Mechanical Check: Helonic checks mechanical drawings against the New York City Building Code: New York City's independent building code with NYC-specific requirements that differ significantly from the IBC.
- https://helonic.com/code-check/nyc-bc-fire-protection - NYC BC Fire Protection Check: Helonic checks fire protection drawings against the New York City Building Code: New York City's independent building code with NYC-specific requirements that differ significantly from the IBC.
- https://helonic.com/code-check/nfpa-101-structural - NFPA 101 Structural Check: Helonic checks structural drawings against the NFPA 101 - Life Safety Code: The comprehensive life safety code addressing construction, protection, and occupancy features necessary to minimize danger to life from fire, smoke, fumes, and panic.
- https://helonic.com/code-check/nfpa-101-mep - NFPA 101 MEP Check: Helonic checks MEP drawings against the NFPA 101 - Life Safety Code: The comprehensive life safety code addressing construction, protection, and occupancy features necessary to minimize danger to life from fire, smoke, fumes, and panic.
- https://helonic.com/code-check/nfpa-101-electrical - NFPA 101 Electrical Check: Helonic checks electrical drawings against the NFPA 101 - Life Safety Code: The comprehensive life safety code addressing construction, protection, and occupancy features necessary to minimize danger to life from fire, smoke, fumes, and panic.
- https://helonic.com/code-check/nfpa-101-plumbing - NFPA 101 Plumbing Check: Helonic checks plumbing drawings against the NFPA 101 - Life Safety Code: The comprehensive life safety code addressing construction, protection, and occupancy features necessary to minimize danger to life from fire, smoke, fumes, and panic.
- https://helonic.com/code-check/nfpa-101-mechanical - NFPA 101 Mechanical Check: Helonic checks mechanical drawings against the NFPA 101 - Life Safety Code: The comprehensive life safety code addressing construction, protection, and occupancy features necessary to minimize danger to life from fire, smoke, fumes, and panic.
- https://helonic.com/code-check/nfpa-101-fire-protection - NFPA 101 Fire Protection Check: Helonic checks fire protection sheets against NFPA 101: sprinkler requirements by occupancy per NFPA 101 occupancy chapters, fire alarm requirements per NFPA 101 Section 9.6, and smoke barrier and smoke compartment requirements for healthcare.
- https://helonic.com/code-check/title-24-structural - Title 24 Structural Check: Helonic checks structural drawings against the California Title 24 Energy Code (Part 6): California's Building Energy Efficiency Standards - the most stringent energy code in the US.
- https://helonic.com/code-check/title-24-mep - Title 24 MEP Check: Helonic checks MEP drawings against the California Title 24 Energy Code (Part 6): California's Building Energy Efficiency Standards - the most stringent energy code in the US.
- https://helonic.com/code-check/title-24-electrical - Title 24 Electrical Check: Helonic checks electrical drawings against the California Title 24 Energy Code (Part 6): California's Building Energy Efficiency Standards - the most stringent energy code in the US.
- https://helonic.com/code-check/title-24-plumbing - Title 24 Plumbing Check: Helonic checks plumbing drawings against the California Title 24 Energy Code (Part 6): California's Building Energy Efficiency Standards - the most stringent energy code in the US.
- https://helonic.com/code-check/title-24-mechanical - Title 24 Mechanical Check: Helonic checks mechanical sheets against Title 24: hVAC equipment minimum efficiency per Title 24 Part 6, economizer and demand-controlled ventilation requirements, and duct insulation and sealing per Title 24 Section 150.0(m).
- https://helonic.com/code-check/title-24-fire-protection - Title 24 Fire Protection Check: Helonic checks fire protection drawings against the California Title 24 Energy Code (Part 6): California's Building Energy Efficiency Standards - the most stringent energy code in the US.
- https://helonic.com/code-check/ashrae-90-1-architectural - ASHRAE 90.1 Architectural Check: Helonic checks architectural sheets against ASHRAE 90.1: building envelope prescriptive requirements per ASHRAE 90.1 Section 5, opaque assembly U-factor and insulation by climate zone, and fenestration area limits, U-factor, and SHGC per Section 5.5.
- https://helonic.com/code-check/ashrae-90-1-structural - ASHRAE 90.1 Structural Check: Helonic checks structural drawings against the ASHRAE Standard 90.1 - Energy Standard for Buildings: The ASHRAE energy standard for commercial buildings, widely referenced by the IECC and many state energy codes.
- https://helonic.com/code-check/ashrae-90-1-mep - ASHRAE 90.1 MEP Check: Helonic checks MEP drawings against the ASHRAE Standard 90.1 - Energy Standard for Buildings: The ASHRAE energy standard for commercial buildings, widely referenced by the IECC and many state energy codes.
- https://helonic.com/code-check/ashrae-90-1-electrical - ASHRAE 90.1 Electrical Check: Helonic checks electrical sheets against ASHRAE 90.1: lighting power density (LPD) per ASHRAE 90.1 Section 9, lighting controls per Section 9.4: occupancy sensors, daylight responsive, and exterior lighting power per Section 9.4.2.
- https://helonic.com/code-check/ashrae-90-1-plumbing - ASHRAE 90.1 Plumbing Check: Helonic checks plumbing drawings against the ASHRAE Standard 90.1 - Energy Standard for Buildings: The ASHRAE energy standard for commercial buildings, widely referenced by the IECC and many state energy codes.
- https://helonic.com/code-check/ashrae-90-1-fire-protection - ASHRAE 90.1 Fire Protection Check: Helonic checks fire protection drawings against the ASHRAE Standard 90.1 - Energy Standard for Buildings: The ASHRAE energy standard for commercial buildings, widely referenced by the IECC and many state energy codes.

## Industry-Specific Drawing Analysis (24 industries)

- https://helonic.com/industries - Industries: Index of industry-specific AI drawing analysis pages for healthcare, data centers, multifamily, K-12, and more.
- https://helonic.com/industries/healthcare-construction - Healthcare Construction: Helonic reads healthcare construction drawings for medical gas outlet locations conflicting with casework shown on the architectural sheets.
- https://helonic.com/industries/data-center-construction - Data Center Construction: Helonic reads data center construction drawings for UPS output bus duct routing conflicts with overhead cooling piping.
- https://helonic.com/industries/multifamily-residential - Multifamily Residential: Helonic reads multifamily residential construction drawings for kitchen exhaust duct routing conflicts with structural joists at every unit.
- https://helonic.com/industries/k12-school-construction - K-12 School Construction: Helonic reads K-12 school construction drawings for classroom HVAC system noise exceeding 35 dBA (ANSI S12.60 maximum).
- https://helonic.com/industries/life-sciences - Life Science and Laboratory: Helonic reads life sciences & laboratory construction drawings for fume hood sash position interlock with VAV controls not coordinated between lab planning and DDC controls drawings.
- https://helonic.com/industries/industrial-manufacturing - Industrial and Manufacturing: Helonic reads industrial & manufacturing construction drawings for overhead crane hook height conflicts with sprinkler main routing.
- https://helonic.com/industries/hospitality-hotel - Hospitality and Hotel: Helonic reads hospitality & hotel construction drawings for guest room PTAC unit location conflicts with structural beam at exterior wall.
- https://helonic.com/industries/mixed-use-development - Mixed-Use Development: Helonic reads mixed-use development drawings for occupancy separation wall at residential/retail boundary doesn't meet 2-hour requirement.
- https://helonic.com/industries/senior-living-construction - Senior Living: Helonic reads senior living & assisted living construction drawings for memory care unit door locking system conflicts with fire egress release requirements.
- https://helonic.com/industries/sports-entertainment-venues - Sports and Entertainment Venues: Helonic reads sports & entertainment venues drawings for exit width insufficient for calculated assembly occupant load on upper concourse.
- https://helonic.com/industries/warehouse-logistics - Warehouse and Logistics: Helonic reads warehouse & logistics construction drawings for ESFR sprinkler head deflector-to-storage clearance insufficient at rack top level.
- https://helonic.com/industries/military-defense - Military and Defense: Helonic reads military & defense construction drawings for AT/FP standoff distance conflicts with site utility routing.
- https://helonic.com/industries/government-civic - Government and Civic: Helonic reads government & civic construction drawings for blast-resistant window system anchorage not coordinated with structural backup wall.
- https://helonic.com/industries/renovation-adaptive-reuse - Renovation and Adaptive Reuse: Helonic reads renovation & adaptive reuse drawings for new HVAC ductwork routing conflicts with existing structural beams - as-built dimensions differ from drawings.
- https://helonic.com/industries/higher-education-construction - Higher Education Construction: Helonic reads higher education construction drawings for fume hood exhaust duct routing conflicts with structural framing above lab.
- https://helonic.com/industries/retail-commercial - Retail and Commercial Construction: Helonic reads retail and commercial construction drawings for a tenant demising wall whose fire rating stops at the ceiling instead of running to the deck.
- https://helonic.com/industries/life-science-laboratory - Life Science and Laboratory Construction: Helonic reads life science and laboratory construction drawings for a fume hood exhaust duct that hits a structural beam and cannot hold the required velocity.
- https://helonic.com/industries/custom-residential - Custom Residential Construction: Helonic reads custom residential construction drawings for roof framing that does not land on the bearing walls below, so the load path breaks.
- https://helonic.com/industries/religious-worship-facilities - Religious and Worship Facility Construction: Helonic reads religious and worship facility construction drawings for worship hall egress capacity insufficient for assembly occupancy load calculation.
- https://helonic.com/industries/infrastructure-transportation - Infrastructure and Transportation: Helonic reads infrastructure and transportation drawings for platform edge tactile warning strip location conflicts with structural drainage channel.
- https://helonic.com/industries/cannabis-facility - Cannabis Facility Construction: Helonic reads cannabis facility construction drawings for cultivation-room HVAC that ignores the heat from grow lights, about 2,000 BTU/hr per light.
- https://helonic.com/industries/cultural-institutions - Cultural Institutions Construction: Helonic reads cultural institutions construction drawings for gallery HVAC supply diffusers blowing directly across artwork wall surfaces causing dust streaks and humidity gradients.
- https://helonic.com/industries/senior-living - Senior Living Construction: Helonic reads senior living construction drawings for memory-care unit delayed-egress door delay timer not shown on hardware schedule (NFPA 101 14.2.2.2.6).
- https://helonic.com/industries/sports-venues - Sports Venues and Stadium Construction: Helonic reads sports venues and stadium construction drawings for wheelchair seating not dispersed across price points and sightlines per 2010 ADA Standards 221.2.1.2.

## Contact

- Email: founders@helonic.com
- Twitter: https://x.com/HelonicAI
- LinkedIn: https://www.linkedin.com/company/helonic
- Schedule a demo: https://cal.com/team/helonic/demo