Wind loads on Y plan shape tall building

Ravinder Ahlawat and Ashok K. Ahuja

An experimental study was carried out on the models of ‘Y’ plan shape tall building in an open circuit wind tunnel to investigate the wind loads generated on the building in isolated as well as interference condition. The base shear (Fx), overturning moment (My) and torsional moment (Mz) acting on the instrumented model were measured. For the isolated condition, the measurements were made for many wind incidence angles. For studying the interference effects, two similar building models were placed in side-by-side configuration and tandem configuration and the spacing between these models were varied. It is observed that the wind incidence angle greatly affects the wind induced loads on the ‘Y’ plan shaped building. Depending on the position of the interfering building, the interfence effects may either be beneficial or may have an adverse effect.