Folded-Plate Hangar Roof Extension, India

An existing hangar at Santa Cruz Airport, Mumbai (Bombay), India, has been extended to accommodate additional aircraft and engineering facilities. The 62 m long cantilever of the new folded-plate roof is of particular structural engineering interest. The new roof structure measures 152 x 60 m in plan, and is symmetrically divided by a longitudinal expansion joint. The 152 m length consists of two cantilevered roofs, each 62.3 m long, and a central roof 27.4 m long over the maintenance building. The roof structure is a continuous, multiple folded-plate system. The transverse section of the folded plate consists of eight 7.6 m wide modules, each having a corrugated plate arrangement, with horizontal top and bottom plates inclined at 45° between the webs.