The Downland Gridshell building, designed by Edward Cullinan Architects, is the enormous covered workshop area of the museum. A gridshell is a lattice structure, which gains strength from its double curvature. Allowing great spans to be bridged without any intermediate supports, the structure is large enough to accommodate whole building restoration under cover. The gridshell structure is made from small pieces of green oak timber. Jointed together to form a lattice, they were assembled on a flat deck of scaffolding. The sides of the scaffolding were then slowly lowered and the edges of the lattice fixed to the ground to create the snake-like arched form seen in the images.

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