THE ASSESSMENT OF WIND LOADS ON ROOF OVERHANG OF LOW-RISE BUILDINGS

Numerical simulations are compared with experimental mean values of ch aracteristic pressure (C-p) values on a gable wall and on a roof overh ang of a low-rise building. The inclined wind direction investigated i s normal to the gable wall. Two-model designs with an overhang of 0.3 and 3.4 m are examined. The main issue in this paper is to investigate what influence a large roof overhang has on the C-p-values on the hou se, compared to an ordinary roof. Also from the engineering point of v iew, it is interesting to see how well a commercial CFD-code, with a b asic turbulence model, can predict the C-p-values for a house. The num erical simulations are performed with a k-epsilon turbulence model.