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Construction Tech Review | Tuesday, September 19, 2023
A BIM Execution Plan (BEP) plays a crucial role in streamlining workflows in construction projects. This article emphasizes the importance of careful analysis and assessment of design objects' size during clash reviews and the necessity for teams to agree on modeling and clearance zone assessment methods.
Fremont, CA: BIM Execution Plans are considered comprehensive documents that serve as essential references throughout construction projects. They define collaboration methods, processes, responsibilities, regulations, and project objectives. This article highlights key elements of BEPs that contribute to efficient workflow management.
Model Coordination Requirements
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Planning is paramount in the design coordination process, often underestimated due to its complexity. The level of development within the model, encompassing various stages and components, must be meticulously considered. Here are some crucial aspects:
Design Object Size: A thorough analysis of the minimum size of design objects is vital during clash reviews.
Clearance Zones: Teams must agree on modeling methods for checking clearance zones, ensuring accessibility and operational access zones are properly defined.
Quality Control Checks
To identify design conflicts before construction begins, interference checks are indispensable. A well-structured BEP typically includes four levels of quality control checks:
1. Design Intent Verification: Ensuring alignment with the intended design, eliminating unintended components.
2. Clash Detection: Identifying conflicts or clashes among two or more components within the model.
3. BIM & CAD Standard Compliance: Confirming adherence to the company's BIM and CAD standards.
4. Error Detection: Verifying compliance with BIM standards, detecting errors, undefined items, or duplicates, with a provision for reporting and corrective actions.
Clash Review Workflow
Effective clash reviews are integral to the BIM Execution Plan. They involve the BIM Manager and Project Engineer conducting regular "Design Reviews" to assess the overall design perspective. Clash reviews can occur at specific project milestones (e.g., 30 percent, 60 percent, and 90 percent) or on a weekly/biweekly basis, aligning with the project's construction phases.
Coordination Analysis Strategy
During the BIM Execution Planning phase, collaboration among the BIM Manager and discipline leads is crucial. They should develop a coordination plan that includes an analytical method (e.g., "System A" vs. "System B"). Clash reviews should be strategically conducted at key project milestones, and for design-build projects, weekly reviews after reaching 30 percent completion may be necessary.
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