St. George's College
A bespoke, free-form roof made of glued laminated timber
The new Activity Centre at St George's College in Weybridge replaces an ageing sports hall that had become too small for the larger number of pupils. Architect Scott Brownrigg designed a bespoke, free-form, glued laminated timber roof that curves in multiple directions. The most important part of realising this vision was the roof of the building: A treetop-like structure that extends over the entire interior. The task was to develop a construction that complied with the roof shape specified by the architect.
Parametric modelling and efficient assembly
Due to the free form of the roof, the entire load-bearing structure was modelled parametrically for both computation and production. Several variants for the alignment of the cross-laminated timber elements were investigated with regard to waste and twisting. Ultimately, it was decided to span the elements vertically between the main beams.
In the floor plan, the building has a rectangular shape with a square axial grid. The roof, however, is a free form composed of curved parallel beams and diagonal beams made of wood.
Due to the curved shape of the roof, no connection detail was the same. However, the details were conceived such that only a few connection types had to be distinguished on the construction site. In addition, simple assembly had to be ensured. Two different types of crane were used on site to ensure quick assembly. This meant that it took only 11 weeks to erect the roof construction.
- Weybridge (GB)
- St. George's College Weybridge
- Scott Brownrigg
- 4,200 m²
- GLT volume
- 850 m³
- Start of construction
- December 2017
- October 2019
- Total construction cost
- 15 million pounds