This design for a stadium in Zürich with a capacity for 20 000 people, will become home to two football clubs if it is successful in passing through to development. For this stage of the project we were required to provide a cost estimate focussing on the steel and concrete structures. The stadium roof is made from cantilever trusses with a 24m span on 21.2m raster. The trusses are supported with large vertical oriented trusses called “Mega-Columns” that are 23m in height. The total weight of all the steel structures was 1 100 000kg. In order to get an accurate cost estimate of the precast Raker beams we made a 3D model in Allplan to ascertain the number of different types of beams. We then built a 3D model to find out the total reinforcement weight for each type of beam.