The BIM coordination process combines and reviews building information models from different disciplines before and during construction. Architectural, structural, mechanical, electrical and plumbing teams develop models that must fit together spatially and functionally. Coordination identifies conflicts, assigns issues and verifies that revisions resolve them.
What BIM coordination includes
- Model exchange using agreed formats and naming rules.
- Federation of discipline models into a common project view.
- Clash detection for geometric and clearance conflicts.
- Issue assignment, review and resolution tracking.
- Coordination meetings and verified model updates.
Step-by-step workflow
- Set responsibilities, software versions, coordinates, naming conventions, exchange dates and priorities.
- Check model origin, coordinates, levels, zones and required information.
- Federate architectural, structural and services models while retaining discipline ownership.
- Run clash tests for ducts against beams, pipes against walls and trays against ceilings using agreed tolerances.
- Remove duplicates and false positives; classify valid issues by safety, cost, programme and constructability.
- Assign each issue an owner, location, priority and due date.
- Publish revised models and rerun relevant tests.
- Verify closure and retain issue history and approvals.
Types of clashes
Hard clash
Two modelled elements physically occupy the same space, such as a duct intersecting a beam without an approved opening.
Clearance clash
Required operating or maintenance space is unavailable around equipment, valves or access panels.
Soft or workflow clash
Installation sequence, temporary works or access constraints create a conflict even when elements do not intersect.
Issue register and common mistakes
Record a unique ID, discipline, model version, location, description, priority, owner, due date, status and closure evidence. Avoid outdated models, inconsistent coordinates, tests without agreed scope, ownerless issues and closing issues without model verification.
Related reading and trusted reference
See civil engineering software comparison and engineering software overview. Read Autodesk Model Coordination documentation.
FAQs
What is the purpose of BIM coordination?
It helps teams resolve model, clearance and constructability issues before they cause rework.
Is clash detection the same as BIM coordination?
No. Clash detection is one activity in a wider workflow of model standards, issue ownership, communication and verification.
Can software resolve every clash automatically?
No. Engineers must assess design intent, approve changes and verify the final solution.