Helonic is an AI construction drawing analysis platform for teams researching code compliance during drawing review. IPC misses on plumbing sheets: fixture counts, venting, cleanouts, water-heater discharge, and slopes the riser never shows.
Common plumbing code violations on drawings are a fixture count below the occupant load, vents that do not reach open air, cleanouts that are not accessible, and water-heater relief lines that terminate in the wrong place. Helonic looks for those on the plans and risers. Pipe slope has its own guide.
Plan reviewers see these on the drawings, before anyone hangs a pipe. The occupant load and the fixture schedule are enough to fail the count.
Count fixtures against the code sheet's occupant load first. Then trace one bathroom group up the riser until the vent terminates. Then find every water heater and follow the relief line.
Helonic pairs the fixture plan with the riser so a vent or interceptor that exists in only one of them gets marked.
Manas 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.
How this page was researched: Examples were checked against the International Plumbing Code provisions for fixture calculations (with IBC Table 2902), vent terminals, cleanouts, and relief-valve discharge. Slope remains on the pipe-slope guide so the two pages do not share a query.
Last reviewed by Manas Gandhi · September 24, 2026
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