Specified for the structural engineering design of the roof of the Savill Building at Windsor Great Park, Buro Happold provided a 90m long by 25m wide three-domed undulating timber structure. More than 20km of 80mm by 50mm larch timber is used in the gridshell, with the roof weighing 30 tonnes - which is less than a concrete roof - thus reducing the loads on the legs and foundations.