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Roof construction defects of medium‐rise buildings in sub‐tropical climates

Roof construction defects of medium‐rise buildings in sub‐tropical climates Purpose – Cracks in the roof parapet wall and damage to the waterproofing membrane are the common defects of roof construction that require frequent maintenance. This paper seeks to review the common defects of roof construction of medium‐rise buildings in sub‐tropical climates. Design/methodology/approach – The research reported was carried out by the survey and analysis of 20 case study buildings. The modes of rooftop parapet wall dislocation are studied and the effects of thermal expansion and end conditions of the parapet wall on the damage to the waterproofing membrane are analysed. Findings – Parapet wall dislocation failure is dependent on whether the ends are hinged or fixed. Failure usually leads to tearing of the waterproofing membrane. Practical implications – Modification to the roof parapet wall design and to the selection of construction materials is suggested. Originality/value – The modes of failure and proposed modification will be of interest to designers and those responsible for the maintenance of flat‐roofed buildings in sub‐tropical climates. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Structural Survey Emerald Publishing

Roof construction defects of medium‐rise buildings in sub‐tropical climates

Y.T. Lo; W.M. Leung; H.Z. Cui
Structural Survey , Volume 23 (3): 7 – Jul 1, 2005
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References (3)

Publisher
Emerald Publishing
Copyright
Copyright © 2005 Emerald Group Publishing Limited. All rights reserved.
ISSN
0263-080X
DOI
10.1108/02630800510610134
Publisher site
See Article on Publisher Site

Abstract

Purpose – Cracks in the roof parapet wall and damage to the waterproofing membrane are the common defects of roof construction that require frequent maintenance. This paper seeks to review the common defects of roof construction of medium‐rise buildings in sub‐tropical climates. Design/methodology/approach – The research reported was carried out by the survey and analysis of 20 case study buildings. The modes of rooftop parapet wall dislocation are studied and the effects of thermal expansion and end conditions of the parapet wall on the damage to the waterproofing membrane are analysed. Findings – Parapet wall dislocation failure is dependent on whether the ends are hinged or fixed. Failure usually leads to tearing of the waterproofing membrane. Practical implications – Modification to the roof parapet wall design and to the selection of construction materials is suggested. Originality/value – The modes of failure and proposed modification will be of interest to designers and those responsible for the maintenance of flat‐roofed buildings in sub‐tropical climates.

Journal

Structural Survey – Emerald Publishing

Published: Jul 1, 2005

Keywords: Roofs; Building conservation

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