Wind Directional Effect on a Single Storey House Using Educational Wind Tunnel

S S Zaini,N Rossli,T A Majid,N A Razak,S N C Deraman,C.W Lim,Xiaohong Zhu

doi:10.1051/matecconf/201820601006

Abstract

Wind tunnel testing of single-storey isolated building with 1: 100 scale down model was carried out in an open circuit wind tunnel without roughness elements facilities. The gable roof building model with 30˚ roof pitch was studied for wind directions of 0˚, 30˚, 45˚, 60˚ and 90˚. Pressure measurements were performed on all the walls and the roof (Zone 1, 2, 3, 4 and 5) of the building model with wind speed of 12 m/s. The results showed that the high suctions were generally induced by the 90˚ wind direction for Zone 1 and 60˚ and 90˚ wind directions for Zone 2. Mostly, high suction was also observed in case of 45˚ and 60˚ wind direction in Zone 3. In zone 4 and zone 5, high suction was generally induced by the 0˚ wind direction.

Highlights

Wind engineering covers the study on the effect of wind flow in natural environment
The positive pressure coefficients were recorded in region A for all wind directions except for 90 ̊ wind direction in Zone 1
In Zone 2, most of the suctions were lower compared to Zone 1 in region B, C and D for 0 ̊, 45 ̊ and 90 ̊ wind direction

Summary

Introduction

Wind engineering covers the study on the effect of wind flow in natural environment. This engineering discipline investigates the possible damage that may be caused by a strong wind event towards a structure, wind conform and the energy that can be extracted for mankind. Most of the houses all over the world are constructed as low-rise building 1 where the mean roof height is less than the least horizontal dimension and less than 18.3 m 2. In Malaysia, severe damage on low-rise building always occurred in the rural area especially in the northern region of Peninsular Malaysia due to windstorm events. Most of the damages occurred on the roofing system, caused by high local suctions and large pressure fluctuations around the roof structure 3

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