High Quality Content by WIKIPEDIA articles! The Nissen hut is a prefabricated steel structure made from a half-cylindrical skin of corrugated steel, a variant of which (the Quonset hut) was used extensively during the World War II by the Commonwealth and U.S. military to build army camps and airbases. A Nissen hut is made from a sheet of metal bent into half a cylinder and planted in the ground with its axis horizontal. The cross-section was not precisely semi-circular, as the bottom of the hut curved in slightly. The exterior was formed from curved corrugated steel sheets 10 foot 6 inches by 2 foot 2 inches, laid with a two-corrugation lap at the side and a 6-inch overlap at the ends. Three sheets covered the arc of the hut (about 54 sheets in all were required). These were attached to five, 3 x 2 inch wooden purlins and 3 x 2 inch wooden spiking plates at the ends of the floor joists.

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