Mean and Fluctuating Wind Loads on an Industrial Structure with Curved Roof

A wind tunnel pressure measurements study was carried out to obtain the pressure distribution on a model (1:200) of an industrial structure with multi-segmental curved roof, under simulated open terrain conditions. The roof of the model was instrumented with pressure taps (area averaged) beneath and above the roof surfaces for both cases i.e., model with and without gable end walls. Pressure data were collected simultaneously beneath and above the roof surfaces of the model for various angles of wind incidence (9 = 0° to 360° in steps of every 30°). In this paper, results pertaining to mean (Cpi, Cpe) and standarddeviation (Cpi, Cpe) of internal and external pressure coefficients for flow direction from parallel (0 = 0°) to perpendicular (G = 270°) to the axis of the arch, for both cases are presented. The effect of gable end walls on C^ and Cpe was also studied. Further, comparison of measured C^ for flow direction 9 = 0° and 270° to the axis of the roof with the values given in various national/international codes of practice were also presented.