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Assembly Tent

Based on investigations carried out in Malaysia into the use of membrane structures under tropical conditions, an additive tent roof was designed to provide a broad covering for open-air assemblies. Large openings at the sides and a central outlet allow the structure to function efficiently despite great humidity, high temperatures and frequent rainfall. External air movements support the internal ventilation and provide relief against the heat. The structural framework consists of six struts supported on tripod elements, with a central mast at the upper level. The roof covers an area of 500 m2 without intermediate columns. The membrane and the struts were hoisted into position by means of a central assembly mast, which allowed the tent to be erected without a crane. This auxiliary mast was removed after the struts had been fixed at the top. Six outer masts and the tripod supports, which are adjustable in height, transmit wind loads to the ground via pins anchored in the earth. Sprung stays absorb the loads of strong gusts of wind. The membrane surface has a minimal area. The main section was constructed in a multi-layer form. An outer skin of aluminium-coated mesh fabric 30 cm above the water-bearing layer screens the latter against overheating. The central, umbrella-like section of the roof is structurally united with the main area. This form of construction provides protection against the rain and facilitates the removal of moist, warm air. The raised floor, which is independent of the load-bearing structure, protects against rising damp and also helps to improve the ventilation.
This article is taken out of the following magazine:
DETAIL 8/1998

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