117 Apartments “Overhoeks” Amsterdam Block N. The client, needed support of BIM modellers to design the mechanical installations. So that’s were we, The BIM engineers offered our services to coordinate and model the project. 117 Apartments “Overhoeks” Amsterdam Block N is an apartment building . It’s a subproject within the main project the “Overhoeks” neighbourhood. The scope of the project was coordinating and modelling the sewage, sanitary and ventilation installations.