The Clongriffin project is located in the north of Dublin. The whole development involved the construction of two blocks intended for residential apartments. Our office was responsible for the preparation of the model, assembly and production drawings for both blocks. The construction of the buildings, apart from the foundations, balconies and small areas of the ceiling on the first floor, was designed from prefabricated elements. The blocks are separated from each other by a dilatation to ensure the independence of deformations of each of them. Prefabricated walls are made as 200mm thick full panels, while the floor slab consists of 200mm thick hollow-core slabs and 75mm of concrete overlay. Thanks to the use of BIM technology, we were able to efficiently solve design problems by participating in coordination meetings and sharing our 3d model with other industries. In addition, we were able to quickly provide accurate bill of materials and quantity lists.