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Clash detection that actually works on PDFs

Helonic is an AI construction drawing analysis platform for preconstruction teams using Helonic for clash detection.

Find coordination conflicts across architectural, structural, and MEP disciplines automatically from your 2D PDF drawing set. No BIM model required. Helonic reads the documents your team actually builds from.

Why does clash detection matter?

A coordination conflict caught in preconstruction is a markup; the same conflict caught after install is demolition, delay, and a change order.

OF REWORK
40%
from coordination clashes
PER CLASH
$25K
average field cost (McGraw Hill)
WITHOUT BIM
90%
projects lack full BIM models
CHEAPER
10x
to fix in preconstruction

How does Helonic go from PDF upload to a clash report?

Helonic reads every sheet in the set and surfaces coordination conflicts in minutes, with sheet numbers the team can assign.

1

Upload your drawings

Drop your PDF drawing set into Helonic. We handle sets of any size, no BIM model required.

2

AI reads every sheet

Our model understands what each discipline shows and where elements are located on each page.

3

Verify every finding

Each flagged conflict is checked back against the drawing itself, so what reaches your report is grounded in what the sheet actually shows.

4

Prioritized clash report

Get a ranked list of clashes with exact sheet references, page locations, and severity ratings.

What types of clashes does Helonic detect?

Helonic detects coordination issues across discipline pairings, including structure versus MEP, architectural openings versus equipment, and ceiling conflicts.

MEP vs Structural

  • Ductwork routing through beams
  • Pipe penetrations through columns
  • Conduit conflicts with structural elements
  • Equipment locations vs structural clearances

MEP vs MEP

  • HVAC vs plumbing routing conflicts
  • Electrical vs mechanical clearances
  • Diffuser vs lighting conflicts in RCP
  • Fire sprinkler vs other ceiling elements

Architectural vs MEP

  • Ceiling heights vs MEP clearances
  • Wall locations vs equipment clearances
  • Door swings into equipment
  • Casework vs electrical outlets

Dimensional Conflicts

  • Dimension strings that do not add up
  • Plan vs elevation mismatches
  • Grid line inconsistencies
  • Scale conflicts between details

Why does 2D clash detection matter when BIM exists?

Most projects do not have complete BIM models from all trades. Even when BIM exists, the 2D construction documents are the legal contract documents that get built. If they have conflicts, those conflicts show up in the field.

Helonic analyzes the documents you actually build from: PDF drawings. We catch coordination issues that exist in the 2D documents, whether or not a 3D model exists.

Keep exploring

Related guides, comparisons, and features for coordination teams.

See clash detection on your drawings

Upload your PDF set and we'll walk you through every coordination conflict our AI catches.