Building Information Modeling BIM Clash Detection and Coordination 2 — Questions and Answers
Question 1: What is a 'clash matrix' used for in BIM coordination?
- A grid defining which discipline pairs must be checked against each other for clashes (Correct answer)
- A chart tracking software license costs
- A schedule of coordination meeting dates
- A log of model file version history
Correct answer: A grid defining which discipline pairs must be checked against each other for clashes
A clash matrix is a table where rows and columns represent disciplines, and each cell indicates whether a clash test between those two disciplines is required.
Question 2: In BIM coordination, what does 'issue tracking' refer to?
- Logging, assigning, and resolving identified model conflicts and RFIs through a shared platform (Correct answer)
- Monitoring software bugs in BIM applications
- Tracking material delivery dates
- Recording subcontractor payment disputes
Correct answer: Logging, assigning, and resolving identified model conflicts and RFIs through a shared platform
Issue tracking in BIM coordination involves documenting detected clashes and design issues, assigning them to responsible parties, and tracking resolution status.
Question 3: Which coordination workflow uses 'model-based RFIs' to resolve design conflicts?
- BIM-enabled clash resolution workflow (Correct answer)
- Traditional 2D plan review only
- Contractor-only field coordination
- Post-construction punch list process
Correct answer: BIM-enabled clash resolution workflow
In BIM-enabled projects, detected clashes are linked to model-based RFIs so that design questions and conflicts are resolved with direct reference to the 3D model.
Question 4: What is 'design coordination' in the context of IPD (Integrated Project Delivery) and BIM?
- A collaborative process where all disciplines resolve conflicts before construction begins (Correct answer)
- A post-bid process where the GC coordinates subcontractors independently
- A government review process for permit approval
- A process limited to MEP systems only
Correct answer: A collaborative process where all disciplines resolve conflicts before construction begins
In IPD with BIM, design coordination is a multi-disciplinary process where all team members collaboratively resolve spatial conflicts and design issues prior to construction.
Question 5: What is a 'coordination model' in BIM practice?
- A federated model used specifically for clash detection and spatial coordination among trades (Correct answer)
- A model owned by the owner for facility management
- A model used only for design development, not construction
- A Revit model with all families loaded
Correct answer: A federated model used specifically for clash detection and spatial coordination among trades
A coordination model combines architectural, structural, and MEP models into one environment to identify and resolve spatial conflicts before construction.
Question 6: Which phase of a BIM project is clash detection most critically performed?
- During design development and construction documentation, before construction begins (Correct answer)
- During schematic design only
- During construction administration after the fact
- During post-occupancy evaluation
Correct answer: During design development and construction documentation, before construction begins
Clash detection is most valuable when performed during design development and construction documentation so that conflicts can be resolved at zero cost before field work begins.
Building Information Modeling BIM Clash Detection and Coordination 2
What is a 'clash matrix' used for in BIM coordination?