Case Study - BIM pilot project of Latvia
BIM emerges in Latvian public sector - pilot project highlights
Main facade before refurbishment
Deliverables, work packages and activities
BEP & CDE
Woksharing between companies using Revit
Celings in front of doors
Structural elements outside of the roof
Differences between architectural and structural drawings in the same location
Levitating structural beams
Mechanical equipment colliding with structural elements and blocking way
Clashes between pipes/ducts and structural objects
Clashes between ducts and structural objects
Misplaced structural openings
In total, 40 issues were identified during visual coordination and 180 during automated clash detection. Most of the issues were replicated across the building, and one group could include hundreds of similar clash instances across the building, for example, pipe clashes in the same model.
A simple estimate shows that dealing with these issues on-site costs a significant amount of money. The assumption was made that one issue can be resolved by 2 people in 2 days. In total it results in 7104 h spent. With an hourly rate of 20 EUR solving these issues would cost more than 140k EUR.
- Models precisely represent the design solutions
- It is impossible to compare all of BOQ positions with BIM. BIM and design were with different detail levels.
- Only physical volumes were compared. Labour costs and effort were not tested.
- Human errors can be reduced significantly by using structured information
- Data Science can be used to make better decisions which are based on information stored in BIM
- The average delta for quantities between models and BOQ exceeded 10%
Wall location differences comparing point cloud with BIM
- It is expensive not to use BIM. 10-20% costs could be saved by better design, coordination and planning.
- Traditional 2D methods are insufficient. It is nearly impossible to coordinate design without 3D models.
- The Pilot defined only a few BIM uses. In reality, there are hundreds, that can deliver value to the projects.
- Laser survey is an obligatory technology for reconstruction projects. The initial costs are outweighed by the avoidance of losses due to design errors.
- Great quality and results require strong competence on both sides - the client and the supply chain.
The Pilot proceeds with an as-built model development. More conclusions will be made and we will write about them. Leave a note if you want to hear about the second phase.
ITED's team was responsible for the project management, MEP model development and 5D scheduling in for this project.
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