Transcription of 1. Introduction
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1. IntroductionIn a survey conducted by BCA in year 2003 involvingabout 10,000 private residential units, water seepagethrough external walls was found to be a commondefect faced by homeowners. The survey findings alsoshowed that the use of single layer brickwall is themost common cause of water seepage through externalwalls. Almost 90% of the water seepage occurredthrough cracks in the plastered brickwalls. In general,water seepage through external walls occurred withinthe first five years of building seepage through the external walls isunacceptable to the occupants. The problem is furthercompounded by Singapore s high humidity andabundant rainfall throughout the year. High windspeeds experienced by high-rise buildings alsoincrease the likelihood of water seepage.
1. Introduction In a survey conducted by BCA in year 2003 involving about 10,000 private residential units, water seepage through external walls was found to be a common defect faced by homeowners. The survey findings also showed that the use of single layer brickwall is the most common cause of water seepage through external walls.
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