Design Wind Pressures on Low-rise Gable and Hip Roof Buildings with Overhangs

摘要

Wind tunnel studies have been carried out in the Center for Wind Engineering at IIT Roorkee India on two basic types of the building roofs, namely, gable and hip roofs. Buildings with either roof types have a Mi-length overhang in the front and a half-length overhang (eave) at the rear of the building. The length, width and eave height of the buildings are 7.2 m, 7.1 m(including the overhang) and 2.8 m respectively, with the roof sloping at 26°. The geometrical scale of the model is 1:50. Pressure coefficients have been obtained from the time history records, and the design pressure coefficients have been derived for various zones of the roof and the overhangs: The Indian Standard Code of Practice IS: 875 (Part-3)-1987 does not provide this information, and very little is available elsewhere on hipped roofs.