MEP engineering · Revit-native · Audit-trailed AI

Engineer hangers and seismic restraints with code-grade certainty.

Fabrik VMR places hangers, ranks supports, and exports reviewer-ready spool sheets straight from Revit — every recommendation traceable to MSS SP-69 and ASCE 7-22, every AI tool call audited and engineer-approved.

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Tolerance
±1%

vs hand-calc

Lock TTL
30 min

optimistic, override-safe

Bridge
HMAC

signed Revit IPC

Platform capabilities

Nine workflows, one auditable model.

Each capability ties back to a code requirement and a hand-calc anchor. No magic. Engineers stay in control, AI stays on the hook.

REQ-01

Hanger placement engine

MSS SP-69 Table 4 max-spacing applied per pipe size and material — clevis, band, and rod selections placed automatically along every run.

REQ-02

Smart support ranking

Ranks clevis, band, rod, and spring hangers using SDC, temperature, and vibration inputs aligned to ASCE 7 §13.3.

REQ-06

Audited load calculations

Dead, operating, and seismic load resolutions delivered within ±1% of hand-calc, every step traceable to inputs.

REQ-09 / 10

AI-assisted recommendations

Claude-powered tool calls suggest support strategies; the engineer always approves, and every prompt-response pair is logged.

REQ-05

QA/QC rule engine

MSS SP-69 and ASCE 7 violations flagged inline. Export is blocked until every flag is dismissed with engineer rationale.

REQ-12

Optimistic locking

30-minute TTL with admin override prevents two engineers from stomping the same assembly mid-edit.

REQ-08

Fabrication export

Programmatic PDF spool sheets and CSV/XLSX schedules generated from the same audited model used in review.

REQ-09 / 17

Revit add-on bridge

HMAC-signed webhook IPC with the Revit add-on. Mock fallback keeps engineers productive when the add-on is offline.

REQ-18

3D viewer

three.js + react-three-fiber preview of hangers, assemblies, and spools rendered next to the calculation pack.

How it works

From Revit model to fabrication-ready in three deliberate steps.

  1. 01

    Connect Revit

    Install the VMR add-on, authenticate, and the HMAC-signed bridge starts streaming model assemblies into the workspace. No manual export.

  2. 02

    Run audited calcs

    Place hangers, rank supports, and resolve dead, operating, and seismic loads. Every AI tool call is logged and engineer-approved.

  3. 03

    Export reviewer-ready docs

    Generate PDF spool sheets and CSV/XLSX schedules from the same audited model. QA/QC violations gate the export until resolved.

  • MSS SP-69Pipe support spacing & selection
  • ASCE 7-22Seismic design forces §13.3
  • HMAC-signed bridgeTamper-evident Revit IPC
  • AI audit trailEvery tool call logged

Ship hangers your reviewer signs the first time.

Sign in to spin up a project, connect Revit, and run your first audited calculation pack. Mock-bridge mode keeps you productive while the add-on is in setup.

Sign in to VMRRe-read capabilities