HPC Tier Module

BIM Clash Detection + Quantity Takeoff

Coordination clash detection + bounding-box quantity takeoff for a BIM model, broad-phased on a spatial cell grid.

This tool runs inside GDBS HPC. What it computes and the authorities it applies are below.

What it is

Coordination clash detection + bounding-box quantity takeoff for a BIM model, broad-phased on a spatial cell grid. Paste or upload building elements as AABBs (id,category,xmin,ymin,zmin,xmax,ymax,zmax) and it finds the pairs that interfere - hard clashes (penetration) and clearance near-misses (within a tolerance) - and rolls up count / volume / footprint per category. Each element self-locates into the grid cells it spans, so only co-occupants of a cell are tested (an O(N) broad-phase, not the O(N^2) all-pairs test); because two overlapping boxes always share a cell, the candidate set provably misses nothing, and the confirmed clashes are cross-checked to EQUAL an exact brute-force pass (that equality is the trust verdict). Honest scope: AABB interference is the standard broad-phase clash (a candidate to review), not a true solid/mesh test; the takeoff is bounding-box (an upper bound on solid volume). A coordination companion to Navisworks / Solibri, not a replacement. Deterministic, in-browser, no API/key/network/AI.

Honest scope

Deterministic and citation-backed: every figure is exact arithmetic or a cited rule. Any year- or jurisdiction-indexed value is a confirmable input, never an eternal hardcode. This is a computation tool, not professional (legal, tax, medical, or financial) advice - confirm against the controlling authority for your context.

Authorities cited

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Run it on your own data

Open it inside GDBS to save runs to Sandbox, attach results to a Worklog case, or share through a Gate client portal - all in the browser, nothing uploaded to anyone’s cloud.

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