BIM LOD 400 Federated Model for the Largest Eye Hospital, Egypt

Project Samples.

3D Architectural BIM Model

MEP BIM Model in Revit

LOD 300 Revit Model

Challenges.

As this was a healthcare building, the coordinated model had to be developed considering multiple usages like ducting for oxygen supply, heavy electrical lines, etc. Additionally, the input 2D CAD drawings posed challenges such as:

• All drawings were developed by different stakeholders and thus lacked uniformity in drafting standards and detailing approach  
• Missing details which needed conceptual detailing skills and getting approvals from the client very often resulting in long wait periods
• Positioning of medical equipment and coordinating their arrangement with other building elements to ensure safe and efficient operations required a very high level of detailing and planning

Solution.

A coordinated clash-free Revit 3D BIM model at LOD 400 and meeting COBie [Construction Operations and Building Information Exchange] standards, was delivered. The model ensured multi-disciplinary design coordination and removed design ambiguity. BOQs generated from federated BIM model enabled lifecycle assessment for efficient maintenance of medical set up across the facility.

Approach.

• A team of Revit engineers with knowledge of LOD 400 modeling and COBie standards was assembled for the project and milestones were defined to complete the project within the stipulated timeframe.
• Input documents included paper drawings, PDF files and photographs for detail designs of the eye hospital building under construction
• All drawings from architectural, structural and MEPF disciplines were imported into Revit platform for coordination and federation
• Other details like steps, fencing HVAC ducts, other plumbing and electrical fit-outs, columns, pillars etc. model elements with fabrication and installation details were also added as per specifications for space layout and arrangement  
• All details related to machinery, equipment, manufacturer details, reference number etc. were added to BIM model for future referencing  
• A single file for complete hospital building design was developed as per COBie standards to establish a single source of truth for all stakeholders 
• Once designs were coordinated, inter-disciplinary design clashes were checked for and resolved with minimal redesigning and sent for client approval
• Upon model approvals, BOQs were extracted, and BIM federation was applied to ensure ease in facility management