Wind pressures on low-rise hip roof buildings

Abstract

Seven hip roof building models for , , , , , and roof pitch with large overhangs of 1.1 m were tested in a wind tunnel at the university of Roorkee, India to investigate wind pressure distributions over hip roofs for various roof pitch and wind direction. The results show that the roof pitch and wind direction do significantly affect the magnitude and distribution of the roof pressures. The roof pitch has been found to experience the highest peak suctions at the roof corners amongst the seven hip roofs tested. Pressures on , and hip roofs are comparable with those reported by Xu and Reardon (1998). Meecham et al. (1991) for hip roof is compatible with hip roof of the present study. Holmes`s works (1994) on gable roof have also been compared with the present work. Zoning for codification has also been attempted since IS875 (Part-3) does not include this information. A comparison for design value has also been made with BRE Report No. 346.