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50,000 Sq. Ft. High-Rise Commercial Facility - Fabrication-Ready (LOD 400) HVAC BIM Modeling

Achieving clash-free LOD 400 HVAC BIM modeling and seamless coordination using Revit & Navisworks for precise, fabrication-ready field execution

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Techture delivered fabrication-ready HVAC BIM modeling for a high-rise commercial facility of 50,000 Sq. Ft. using Autodesk Revit and Navisworks. The project involved developing a coordinated HVAC model based on client-issued design drawings and integrating it with multidisciplinary models for clash-free execution. Through structured BIM coordination, constructability reviews, and model updates, the HVAC systems were optimized for installation accuracy. The final deliverables included coordinated shop drawings supporting fabrication and on-site implementation. The BIM-driven workflow ensured improved system coordination and reduced construction risks.

Scope of work

  • Develop HVAC BIM model based on approved design drawings using the architectural model as reference.
  • Model ductwork, equipment, and associated HVAC components using standard and custom Revit families.
  • Perform multidisciplinary clash detection with architectural, structural, and MEP models.
  • Prepare constructability reports including viewpoints, screenshots, and issue descriptions.
  • Update model based on coordination meetings and RFIs to achieve a clash-free condition.
  • Extract coordinated HVAC shop drawings (approx. 6 sheets) for installation support.

Challenges & solutions

Challenge
Inconsistencies and gaps between client-issued design drawings and multidisciplinary architectural/structural elements.
Solution
Developed a detailed HVAC BIM model referenced strictly against the architectural model, using standard and custom Revit families to ensure spatial and functional accuracy.
Challenge
High risk of physical and spatial clashes between HVAC ductwork, equipment, and structural/architectural components in a complex high-rise layout.
Solution
Conducted comprehensive multidisciplinary clash detection in Navisworks and prepared detailed constructability reports (with visual viewpoints, screenshots, and issue tracking) to pinpoint conflicts early.
Challenge
Resolving site execution risks and ensuring accurate fabrication without delaying construction schedules.
Solution
Conducted structured BIM coordination meetings, addressed RFIs, and continuously updated the BIM model to achieve a fully clash-free LOD 400 state before extracting approx. 6 coordinated, fabrication-ready shop drawings.

Project outcomes

  • Standardized BIM workflows and family libraries
  • Well-managed model updates and revisions
  • Quality-controlled BIM documentation
  • Structured modeling that scales across unit types

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