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September 08, 2026 - BY Admin

Clash Detection Best Practices: Resolving Hard and Soft Clashes in Navisworks

Eliminating Costly Onsite Rework Through Model Audits

Rework on construction sites can add 5% to 12% to total project costs. Automated clash detection in Autodesk Navisworks Manage catches interdisciplinary design errors before steel is cut or concrete is poured.

Hard Clashes vs. Soft Clashes

Successful spatial coordination requires understanding geometric intersections and functional service clearances.

  • Hard Clashes: Direct physical intersections, such as an HVAC duct penetrating a structural concrete beam.
  • Soft/Clearance Clashes: Violations of operational clearances, such as insufficient workspace around high-voltage switchgear.
  • Time-Based 4D Clashes: Equipment or staging conflicts during dynamic site delivery phases.

Learn federated model auditing in the BIM Master Diploma Program.

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