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Wind and Structures Volume 14, Number 4, July 2011 , pages 321-335 DOI: https://doi.org/10.12989/was.2011.14.4.321 |
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Vulnerability of roofing components to wind loads |
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N.C. Jayasinghe and J.D. Ginger
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| Abstract | ||
| The vulnerability of roofing components of contemporary houses built in cyclonic regions of Australia is assessed for increasing wind speeds. The wind loads and the component strengths are treated as random variables with their probability distributions derived from available data, testing, structural analysis and experience. Design details including types of structural components of houses are obtained from surveying houses and analyzing engineering drawings. Wind load statistics on different areas of the roof are obtained by wind tunnel model studies and compared with Australian/New Zealand Standard, AS/ NZS 1170.2. Reliability methods are used for calculating the vulnerability of roofing components independently over the roof. Cladding and batten fixings near the windward gable edge are found to experience larger negative pressures than prescribed in AS/NZS 1170.2, and are most vulnerable to failure. | ||
| Key Words | ||
| vulnerability; reliability; wind loads; houses; wind tunnel; strength; probability. | ||
| Address | ||
| N.C. Jayasinghe and J.D. Ginger : Cyclone Testing Station, School of Engineering and Physical Sciences, James Cook University, Townsville, QLD 4811, Australia | ||