Clash detection tools can identify contradictions between building design models early in the design phase. This reduces risks of problems causing multi-level design changes, project delays, and budget overruns. Smaller risks and lower costs result from decreased material waste by eliminating clashes early. The document describes clash detection approaches using BIM 360 and Revit to visually inspect models, coordinate in Navisworks, export clashes to Dynamo to generate clash spheres, and resolve clashes in phases and rounds to catch contradictions between architectural, structural, and mechanical, electrical, and plumbing models.

1. 12. CLASH DETECTION
Clash Detection
Tools
Approach
Process

2. CLASH
DETECTION
• Ability to detect contradictions between different models as early
as the design phase.
• Every clash eliminated during the design phase means one
potential problem that might have resulted in a multi-level
design change, project delays, and budget expansions.
• Smaller risks, lower overall costs, and decreased material waste.

3. TOOLS

4. • BIM 360
• Revit
APPROACH
01.
Visual
Inspection

5. • Trial Accounts
• Search Sets can’t be Identified
APPROACH
02.
BIM 360
Model
Coordination
1. All Models 2. Clashes
3. Model Coordination 4. Navisworks
(Didn’t WorkOut)

6. APPROACH
03.
ENVIRONMENT SETUP RESOLVING CLASHES
1 2
Coordination File
NWC
NWF
Clash Matrix
Search Sets
Clash Tests
Export Clash Point as XML
XML to CSV
Clashes Spheres by
Dynamo
Resolve Clashes

7. 1. All Linked Models 2. Exported NWC View
1. Coordination File
03. ENVIRONMENT SETUP

8. Using Desktop Connector
2. NWC/NWF

9. 3. Clash Matrix

10. 4. Search Sets/Clash Tests
1. Search Sets 2. Clash Tests

11. 1. Export as XML 2. XML
1. XML File
03. RESOLVING CLASHES FOR FIRST FLOOR

12. 1. All Tests
2. XML to CSV
3. Save as CSV
2. Tests Classifications

13. 1. Dynamo Script
3. Clash Sphere by Dynamo Script
2. Before & After the Script

14. 4. Resolving Clashes
1. Clash Selected 2. Clash Solved

15. PROCESS
• Same Discipline Contradictions
(AR – AR / STR – STR / MEP – MEP)
• Rest of Clashes
(STR – MEP / AR – STR / MEP – AR)
• Phases & Rounds