Table of Contents
Journal of Structures
Volume 2013, Article ID 176739, 12 pages
http://dx.doi.org/10.1155/2013/176739
Research Article

Effects of Side Ratio on Wind-Induced Pressure Distribution on Rectangular Buildings

1Department of Civil Engineering, Sardar Vallabhbhai Patel Institute of Technology, Vasad 388 306, India
2Department of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee 247 667, India

Received 25 February 2013; Revised 27 June 2013; Accepted 11 July 2013

Academic Editor: Vincenzo Gattulli

Copyright © 2013 J. A. Amin and A. K. Ahuja. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper presents the results of wind tunnel studies on 1 : 300 scaled-down models of rectangular buildings having the same plan area and height but different side ratios ranging from 0.25 to 4. Fluctuating values of wind pressures are measured at pressure points on all surfaces of models and mean, maximum, minimum, and r.m.s. values of pressure coefficients are evaluated. Effectiveness of the side ratios of models in changing the surface pressure distribution is assessed at wind incidence angle of 0° to 90° at an interval of 15°. Side ratio of models has considerable effects on the magnitude and distribution of wind pressure on leeward and sidewalls but it has very limited effect on windward walls at wind incidence angle of 0°. For building models with constant cross section, change in side ratio does not significantly affect the general magnitude of peak pressures and peak suctions, but rather the wind angle at which they occur. The regression equation is also proposed to predict the mean pressure coefficient on leeward wall and side wall of rectangular models having different side ratios at 0° wind incidence angle.