EXPERIMENTAL EVALUATION OF WIND LOADS ON CANOPY ROOF

Abstract

The aim of the present study is to carry out the extensive wind tunnel test on canopy roofs. In the present study two types of canopy roofs are used, both the models are made of perspcx sheet which is used for pressure measurement with scale ratio of 1:40. One is flat canopy roof and the other is mono slope canopy roof. Both canopy roofs have upper and lower roof surface. Pressure coefficients are measured for both flat and mono slope roofs. For both the roofs there are four different blockage conditions i.e. half panel blockage, full panel blockage, raised blockage. An open terrain wind model classified as terrain category 2 was simulated using a set of small cube box and roughness elements placed upstream of the building model inside the wind tunnel. Detailed experimental studies are carried out to find the pressure coefficients around the building for isolated building model. Wind pressure coefficient on canopy roof is given in code of practice of various countries but sometimes that information is not enough for the design of the building. The value of pressure coefficient on surface of canopy roofs with different blockage conditions is determined in the present study of models