the question
As part of the City of Amsterdam’s Project 1012, which also included De Rode Loper and the construction of the North/South metro line, the Rokin District set out to revitalise the area between Dam Square, the Rokin and the Nes. Two new buildings were constructed on the site on the Rokin where a large bank building once stood, while the Vleeshal, a national monument, was renovated and repurposed. Boltt was responsible for project coordination and the technical development of the design.
the approach
Because of the limited space on site and the short construction period of just 18 months for a gross floor area of 12,000 m², contractor Van Wijnen required an exceptionally detailed BIM model, fully aligned with the work of consultants and suppliers. Prefabrication and direct installation from the truck were necessary to shorten the construction period and reduce construction errors. The BIM model also had to be suitable for checking the production models of the specialist partners.
Within the BIM model, the various building components, including natural stone, window frames, structural elements and steelwork, were developed separately. We organized and coordinated clash detection sessions to align the work with the consultants and contractor. In effect, the entire building was first constructed virtually, with the assembly sequence and site logistics already considered. During the production and execution phases, Boltt also checked the production models.
“I am very pleased with the result. By incorporating input from contractors and subcontractors at an early stage, the design was genuinely strengthened.”
Jaap Hoving, Boltt Project Coordinator
The result
Because of the detailed modelling work, a range of issues that would traditionally only come to light on site were identified during the design phase. This made it possible to resolve them at an early stage. During the review of the production models, the final adjustments were made and the components prepared for production. This approach shortened the construction period, resulted in very few issues at handover, contributed to the required BREEAM score, and is reflected in the quality of the completed project.
client
Ivy Group
year
2012 – 2016
services
BIM Management
BIM Implementation
Project Coordination
Image
Photography by Kees Hummel
Collaboration
Concerf Monumentenzorg, IMd Consulting Engineers, Incendio B.V., Nieman Group, Octatube, Quinten Wildeboer, Rijnboutt, Van Wijnen
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