AI drawing review for general contractors: catch coordination issues before they become RFIs
Helonic is an AI construction drawing analysis platform for general contractors who review 2D PDF drawing sets.
Preconstruction managers, project managers, and VDC leads use Helonic to read the whole drawing set before bid, buyout, and mobilization. It returns a list of coordination conflicts, schedule and spec mismatches, and missing information, each tied to a sheet and a location.
Direct answer. General contractors use AI drawing review to find coordination conflicts in the 2D PDF set before they turn into RFIs, change orders, and rework. Helonic checks every sheet against the others and the specs, then lists each finding by sheet and location. Your team confirms each one and decides what becomes an RFI.
How do general contractors review drawing sets for errors?
Most GCs review a set in the same order: confirm it is complete, learn the project, then cross-check disciplines, schedules, and callouts. Done by hand, that is a senior person paging through every sheet.
- Check the set is complete. Compare the sheet index with the sheets actually received, and note missing disciplines, missing details, and sheets still marked preliminary.
- Read the general notes, specs, and code summary. Pick up the occupancy, construction type, and rated assemblies that every later check depends on.
- Cross-check the disciplines. Lay architectural plans over structural framing and the MEP sheets to find ducts through beams, ceilings too low for what is above them, and shafts that do not line up floor to floor.
- Check schedules against plans. Door, window, finish, and equipment schedules against the tags on plan, and the drawings against the spec sections.
- Follow every callout. Confirm that section and detail references point to a sheet and detail that exist and show the condition referenced.
- Log the questions. Turn each finding into a bid clarification, an RFI, or a scope item for the trade that owns it.
Helonic does the cross-checking in steps three to five across the full set, so the reviewer starts at step six with a list to confirm. The manual version is written up in how general contractors review drawing sets for errors.
Where does AI fit in the GC workflow?
AI review fits at each point where a GC has to commit to what the drawings say, from the bid number to installed work.
| Stage | What Helonic checks |
|---|---|
| Bid | Missing scope, unclear responsibility between trades, and drawing-to-spec conflicts worth a clarification or a qualification in the number. |
| Preconstruction and constructability | Trade coordination conflicts, ceiling and plenum fit, and details that cannot be built as drawn, while they are still cheap to fix in the documents. |
| Buyout | Scope gaps between bid packages, so each sub's scope matches what the drawings and specs actually show. |
| Shop drawings and submittals | Sub shop drawings and product data checked against the contract drawings, schedules, and specs before they go to the design team. |
| Construction administration | Revised sheets and bulletins compared with the prior issue, so changes that touch other trades are caught before work is in place. |
For shop drawings, see submittal review, which compares what the sub drew with the contract documents. Teams that run a dedicated precon group can also read Helonic for preconstruction teams.
What does Helonic catch before it becomes an RFI?
Helonic catches the conflicts that usually surface as field RFIs: places where two sheets, or a sheet and the spec, disagree.
- Trade conflicts. Duct, pipe, and conduit routed through beams and columns, and systems stacked deeper than the plenum allows.
- Sheet-to-sheet mismatches. Dimensions, elevations, and grid locations that disagree between the architectural, structural, and MEP sheets.
- Schedule and spec conflicts. A door schedule calling for a rating the wall type does not have, or a drawing showing one material while the spec calls for another.
- Broken references. Callouts to details that were deleted, renumbered, or never drawn.
- Missing information. Conditions shown on plan with no detail, no dimension, or no spec section covering them.
Trade conflicts are covered in more detail under clash detection. Once a finding is confirmed, RFI generation drafts the question with the sheet reference attached.
Does it fit into Procore or Autodesk without changing our workflow?
Yes. Helonic pulls drawings from the project you already have in Procore or Autodesk Construction Cloud and sends confirmed findings back as RFIs. Your team keeps its RFI log, numbering, and routing where they are now.
The setup for each platform is on Procore integration and Autodesk integration. Teams not on either can upload the PDF set directly.
What are the limits?
Helonic speeds up the checking in a drawing review, but it does not replace the reviewer or the model.
- It needs a reasonably complete PDF set. A plan-only package with no structural or MEP sheets gives it little to cross-check.
- Every finding needs a person to confirm it. Helonic flags likely issues with the sheet and location, and your reviewer decides what becomes an RFI.
- It is not BIM clash detection. It reads 2D drawings, not a federated Navisworks or Revit model.
- It does not do quantity takeoff or estimating. Your estimators still price the job.
If you are weighing 2D review against a model-based clash run, see 2D vs 3D clash detection.
Frequently Asked Questions
How do general contractors review drawing sets for errors?
Can automated drawing review help prevent design conflicts from turning into RFIs or rework?
Can AI review shop drawings?
Does Helonic work inside Procore or Autodesk Construction Cloud without changing our workflow?
Can AI drawing review replace manual checking during preconstruction?
What should buyers know about Helonic's limits?
Milind Sagaram
Co-founder & CEO, HelonicMilind is the co-founder and CEO of Helonic, where he leads product and go-to-market for AI-powered construction drawing analysis. He works closely with general contractors, project managers, estimators, and owners to understand how drawing quality drives project outcomes - and where AI can reduce RFIs, change orders, and rework. Milind has interviewed hundreds of construction professionals across project delivery roles, from preconstruction estimators at ENR top-400 contractors to facilities directors at institutional owners, and uses those conversations to shape both product direction and the way Helonic talks about the work.
- Construction project delivery and preconstruction
- RFI and change order economics
- Owner and GC workflows for drawing QA/QC
- Estimating risk and bid-stage scope assessment
How this page was researched: The review steps follow the sequence general contractors use on bid and preconstruction sets: sheet index check, general notes and code summary, discipline cross-check, schedule-to-plan check, callout check, and RFI logging. Integration details reflect Helonic's Procore and Autodesk Construction Cloud connectors. Issue examples are drawn from Helonic's own review of general contractor drawing sets across commercial, multifamily, and healthcare projects.
Last reviewed by Milind Sagaram · October 2026