AI review of fire protection drawings and sprinkler shop drawings
Helonic is an AI construction drawing analysis platform for fire protection engineers who review 2D PDF drawing sets.
Fire protection engineers and sprinkler and alarm contractors use Helonic to check fire protection drawings and shop drawings against the architectural set before they go to the AHJ. It reads the sprinkler, fire alarm, architectural, and MEP sheets together and lists coverage, rating, and penetration problems, each tied to a sheet and location.
Direct answer. Helonic reviews 2D fire protection drawings and sprinkler shop drawings against NFPA 13, NFPA 72, NFPA 101, and IBC Chapters 7 and 9. It flags obstructed heads, detector spacing misses, fire door ratings that do not match their walls, and unprotected penetrations. It does not run hydraulic calculations, lay out systems, or estimate.
How do you review fire protection drawings?
Review fire protection drawings against the full coordinated set, not the FP sheets alone, in this order.
- Collect the full set first. Architectural life safety plans, floor plans, and reflected ceiling plans, the sprinkler and fire alarm drawings, mechanical and electrical plans, the equipment data sheets, and the Division 21 and 28 specs. A fire protection review done on the FP sheets alone misses most coordination problems.
- Confirm the basis of design. Occupancy, construction type, hazard classification, and the code editions the AHJ has adopted. Every later check depends on these being right and consistent across the set.
- Check sprinkler coverage and obstructions. Compare head layout against the reflected ceiling plan and the ductwork, lights, beams, and soffits drawn in the same zone.
- Check fire alarm device layout. Detector and notification appliance locations against the current room layout, ceiling heights, and air diffusers.
- Trace rated assemblies across sheets. Follow each rated wall, floor, and shaft from the life safety plan to the plans, sections, and details, and confirm the door ratings and penetration details match.
- Check submittals against the contract set. Sprinkler shop drawings, fire alarm submittals, and product data compared with the specs and the coordinated drawings.
- Log every finding by sheet. Write each issue with the sheet, location, and code section, so the designer, contractor, or AHJ can confirm it quickly.
Helonic runs steps three through six on every sheet, so the engineer spends review time on judgment calls. The manual version of this process is written up in fire protection drawing review, and the drawing conventions are covered in how to read fire sprinkler drawings.
What does AI check on sprinkler shop drawings and fire alarm drawings?
Helonic checks whether the fire protection drawn on the shop drawings fits the building drawn on the architectural and MEP sheets. The table lists the checks and the code reference behind each one. Editions and local amendments follow what the project's AHJ has adopted.
| Drawing | What Helonic flags | Reference |
|---|---|---|
| Sprinkler shop drawings | Heads blocked by ducts, lights, beams, or soffits drawn in the same zone | NFPA 13 obstruction rules for the sprinkler type |
| Sprinkler shop drawings | Heads that do not match the current reflected ceiling plan, or areas with no heads shown | NFPA 13 spacing and coverage for the hazard |
| Sprinkler shop drawings | Head types, finishes, and pipe materials that differ from the Division 21 spec | Project specification |
| Fire alarm drawings | Smoke and heat detector spacing after layout or ceiling changes, and detectors placed too close to supply diffusers | NFPA 72 Chapter 17 |
| Fire alarm drawings | Rooms with no notification appliance shown, and devices that do not match the Division 28 spec | NFPA 72 Chapter 18, project specification |
| Architectural coordination | Fire door ratings that do not match the rating of the wall they sit in | IBC 716 opening protectives |
| Architectural coordination | Pipe, duct, and conduit crossing rated walls and floors with no firestop detail | IBC 714 penetrations |
| Architectural coordination | Rated walls that stop short of the deck or change rating between sheets | IBC Chapter 7, NFPA 101 |
Shop drawings and product data are compared with the specs through submittal review. The full fire and life safety rule set is on fire and life safety review, and the sprinkler rules themselves are summarized in NFPA sprinkler requirements. For what changed in the newest sprinkler standard, see NFPA 13 2025 edition changes.
Can passive fire protection be checked on the 2D set?
Yes. Rated assemblies, fire door ratings, and penetrations are all drawn on the 2D set, and Helonic checks that they agree with each other.
- Rated assembly continuity. Rated walls shown on the life safety plan that are missing from a floor plan, drawn with a different rating in the wall types, or stopped at the ceiling instead of the deck.
- Fire door ratings. Door schedule ratings compared with the rating of the wall each door sits in, plus labeled doors with hardware that does not fit a fire-rated opening.
- Penetrations and firestopping. Sprinkler mains, ducts, pipe, and conduit that cross a rated assembly with no firestop system, no fire damper, or a detail that does not match the assembly.
- Shaft enclosures. Shafts whose rating or enclosure is inconsistent between plans, sections, and the life safety plan.
The penetration checks are described in penetration analysis, and the broader rule list is on code compliance checking. For firestop systems and assembly ratings, see the firestopping guide and the fire rating guide.
Does Helonic validate fire door ratings and penetrations in BIM?
No. Helonic does not check BIM models; it checks the 2D PDF drawings that get issued and permitted. If your team validates fire door ratings or service penetrations inside a Revit model, that is a model-checking tool's job.
The 2D set is what the AHJ reviews and what the contract is built from, and many fire protection packages are never modeled at all. Running Helonic on the issued PDFs catches rating and penetration conflicts whether or not a model exists. The tradeoffs between the two approaches are laid out in 2D vs 3D clash detection.
What does Helonic not do for fire protection?
Helonic reviews fire protection drawings; it does not design, calculate, or price fire protection systems.
- No hydraulic calculations. It does not run or verify sprinkler hydraulic calcs. Use your hydraulic calculation software and the engineer of record for that.
- No sprinkler design or layout. It does not lay out heads, size pipe, or produce shop drawings. It reviews drawings your team or contractor already produced.
- No estimating. It does not do fire suppression takeoffs or bids.
- No stamp. The engineer of record and the AHJ still make every compliance decision.
What does a fire protection engineer get back?
Helonic returns a list of findings, and each one names:
- The sheet and the location on it.
- The systems or assemblies involved, such as a sprinkler main and a rated corridor wall.
- The code section, where the finding is a code issue.
- A severity, so the team starts with what fails inspection or costs the most to fix in the field.
Findings can go straight into Procore or Autodesk as RFIs or submittal comments.
Frequently Asked Questions
How do you review fire protection drawings?
Can AI review sprinkler shop drawings against spec requirements?
Can Helonic check fire door ratings and penetrations without BIM?
Does Helonic run hydraulic calculations or design sprinkler systems?
Does Helonic do fire suppression estimating?
How do I verify life safety code compliance before project sign-off?
Manas Gandhi
Co-founder & CTO, HelonicManas is the co-founder and CTO of Helonic, where he leads engineering and AI research for construction drawing analysis. He works directly with structural, MEP, civil, and fire protection engineers to translate the way they review drawings into AI systems that flag the issues that actually matter in the field. Before Helonic, he built machine learning pipelines for technical document understanding and has spent the last several years interviewing licensed design engineers and discipline leads to ground product decisions in real practice rather than industry assumptions.
- AI for technical document understanding
- Cross-discipline coordination workflows
- Code compliance automation (IBC, NEC, NFPA, IPC, IMC, ASCE)
- Structural and MEP drawing review systems
How this page was researched: Checks reference NFPA 13 sprinkler spacing and obstruction rules, NFPA 72 Chapters 17 and 18 for initiating devices and notification appliances, NFPA 101, and IBC Chapter 7 (including Section 714 penetrations and Section 716 opening protectives) and Chapter 9, run against the editions the project's AHJ has adopted. Examples come from Helonic's review of sprinkler, fire alarm, and shop drawing sets coordinated against architectural and MEP sheets.
Last reviewed by Manas Gandhi · October 2026