Please use this identifier to cite or link to this item: http://localhost:8081/xmlui/handle/123456789/7109
Title: WIND PRESSURE COEFFICIENTS FOR PYRAMIDAL ROOFS
Authors: Bansal, Mukesh Kumar
Keywords: CIVIL ENGINEERING;WIND PRESSURE COEFFICIENTS;PYRAMIDAL ROOFS;WIND TUNNEL FLOOR
Issue Date: 1997
Abstract: Justification of enhanced performance of pyramidal roof have paved the way for the study of wind pressure coefficients on pyramidal roof. Effect of variation of roof slope and wind incidence angle have been studied in some previous studies. However, scale effects on wind pressure coefficients are not well understood yet. Present study further enlighten the distribution of wind pressure coefficients on pyramidal roof and discusses the effects of variation of model scale on wind pressure coefficients. In the present study mean, peak and rms values of wind pressure coefficient have been observed for wind incidence angles of 0°, 30°, 45°, 60° and 90° in boundary layer wind tunnel on five geometrically similar models of an assumed prototype with pyramidal roof having roof slope of 20°._Different scales used are 1:50, 1:25, 1:20, 1:15 and 1:10. Upstream terrain exposure and wind velocity at a height of one metre above wind-tunnel floor have been kept same for all the models. Power law exponent of 0.14 has been simulated using a combination of vortex generators, barrier wall and roughness blocks. Results, in terms of pressure coefficients, have been presented in the form of tables, graphs and contours. Mean pressure coefficients are observed to increase with the blockage, however, for blockage up to 3% no appreciable change are observed. The best range of blockage for testing models of buildings with Pyramidal roof appears to be between 1% and 3%. • Generally the peak presssure coefficient follow the same trend as the mean pressure coefficient. Average rms pressure coefficient remains almost unaffected with the variation in percentage blockage.
URI: http://hdl.handle.net/123456789/7109
Other Identifiers: M.Tech
Research Supervisor/ Guide: Godbole, P. N.
metadata.dc.type: M.Tech Dessertation
Appears in Collections:MASTERS' THESES (Civil Engg)

Files in This Item:
File Description SizeFormat 
CED 247718.pdf4.45 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.