Clash Detection

Model Aggregation & Setup

  • Combine mechanical, architectural, structural, plumbing, electrical, and FP models
  • Clean and prepare models for clash detection
  • Set up search sets, selection sets, and clash rules
  • Apply discipline‑specific tolerances to reduce noise

Clash Test Creation

  • Build targeted clash tests (duct vs. structure, pipe vs. electrical, etc.)
  • Create system‑specific tests for hydronic, CW, steam, gas, etc.
  • Apply clearance zones for equipment and access requirements
  • Customize tests based on project phase and contractor priorities

Clash Detection Execution

  • Run clash detection in Navisworks Manage
  • Filter out false positives and low‑value clashes
  • Prioritize clashes by severity, schedule impact, and trade responsibility
  • Identify constructability issues beyond simple geometry conflicts

Clash Review & Resolution Guidance

  • Provide clear, contractor‑friendly markup sets
  • Recommend practical routing adjustments
  • Validate that proposed solutions remain code‑compliant
  • Coordinate with other trades to negotiate routing changes

Issue Tracking & Reporting

  • Maintain a running clash log
  • Assign responsibility (mechanical, structural, electrical, etc.)
  • Track status: open, in review, resolved, verified
  • Provide weekly summary reports for GC/CM and trade partners

Integration With Coordination Meetings

  • Validate resolutions in the next model update
  • Support weekly or bi‑weekly coordination cycles
  • Present high‑priority clashes
  • Provide updated markups and screenshots

Fee Structure

Hourly Clash Review & Resolution

  • Standard rate: $200/hr
  • Rush / same‑day: $250/hr
  • Minimum: 1.0 hour per session

Used for:

  • Small clash sets
  • Quick reviews
  • Follow‑up checks
  • Reviewing updated models

Per‑Clash‑Set Pricing

Ideal for predictable pricing per coordination cycle.

Light Clash Set — $300

  • Fewer than 20 clashes
  • Simple routing adjustments
  • Minimal multi‑trade impacts

Standard Clash Set — $450

  • 20–50 clashes
  • Typical coordination complexity
  • Multi‑trade interactions
  • Requires markup set + summary

Heavy Clash Set — $600

  • 50+ clashes
  • Congested areas
  • Structural/architectural conflicts
  • Requires detailed routing alternatives

Weekly Clash Detection Packages

Perfect for active coordination cycles.

Standard Package — $1,200/week

Includes:

  • 1 full clash detection run
  • Prioritized clash list
  • Markup set (PDF or screenshots)
  • Issue log updates
  • Weekly summary report
  • Up to 2 hours of follow‑up modeling/QC

Enhanced Package — $1,800/week

Includes everything above plus:

  • Additional clash detection run (mid‑week)
  • Additional 2 hours of modeling/QC
  • Priority turnaround
  • Coordination meeting participation

Navisworks Setup & Model Prep

  • Light setup: $200
  • Standard setup: $300
  • Heavy setup: $500
    • Create search sets
    • Build clash tests
    • Clean and organize models
    • Apply tolerances and rules

Optional Add‑Ons

Constructability Overlay — $300

  • Adds access, clearance, and serviceability checks
  • Identifies non‑geometric conflicts

Trade‑Specific Clash Reports — $150 each

  • Mechanical vs. structural
  • Mechanical vs. electrical
  • Mechanical vs. plumbing
  • Mechanical vs. fire protection