The eight cabins have different uses - changing room, storage, administration - but are identical in size (approximately 4,800 x 9,400mm) and structure. Each cabin is formed of a series of 360 x 90mm glulam arches at 1,200mm centres braced by a double layer of 6mm marineply sheathing which acts as a diaphragm. It is lined with breather paper on the outside and insulated studwork on the inside. The arches are exposed internally and the internal lining is of birch-faced ply.
Weather protection is provided by a rainscreen of 6mm Bruynzeel ply panels on a sub-frame of 50 x 50mm vertical and horizontal battens which allow airflow. The vertical edges of the rainscreen panels have 10mm shadow gap joints to allow edge coating of the panels. The horizontal edges are overlapped with ply strips within the joint to create airflow which is extracted, together with mechanically extracted internal air, through the roof ridge vent.
The front walls of the cabins are all fully glazed, some with etched glass to obscure views into the spaces.
The frameless panels have curved edges, following the shape of the gable glulam arch and fixed just behind it. At the top, the glass panels are fixed to a pair of tapered steel fins suspended from brackets bolted to the back of the arch.