The self-finished ribbed-concrete floor slabs provide economic, low-maintenance ceilings with integrated lighting cast into the rib coffers, while providing thermal mass consistent with the environmental design. Downstand beams were avoided to allow rapid construction and future reconfiguration of the teaching spaces. The steelframed roof is supported on a longitudinal Vierendeel truss along its spine to allow for a step in the roof line along the centre and to minimise the number of internal columns. The structural components of the Vierendeel are minimised and co-ordinated to allow a clear storey window on the vertical step in the roof.
The common room roof is supported on simple cranked beams formed from T-sections to create an elegant roof above the space, while feature concrete 'goalpost' frames support the flank wall along the eastern edge.