Wind loads on double-skillion roof houses

Parackal, Korah I., Ginger, John D., and Eaton, Joshua (2022) Wind loads on double-skillion roof houses. Australian Journal of Structural Engineering, 23 (1). pp. 26-36.

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Recent damage surveys have shown that double-skillion roofhouses, characterised by two monoslope roofslopes with a vertical 'rise' connecting the upper and lower roof slopes, are vulnerable to cladding and structural failures in windstorms. Wind loading Standards such as AS/NZS 1170.2 do not currently provide pressure coefficients for deriving design wind loads specifically for these types of double-skillion roofs.

This paper presents a 1/50 scale wind tunnel model study on a typical double-skillion roof house. The study found that the upper roof slope experiences large suction pressures especially near the upwind corner for oblique approach winds. In addition, the lower roof slope and rise are subjected to large positive pressures. The structure (i.e. rafters) near the end-walls also experiences large hold-down loads. Cladding loads and rafter hold-down loads are significantly larger than values obtained from applying data currently available in AS/NZS 1170.2

Item ID: 72142
Item Type: Article (Research - C1)
ISSN: 1328-7982
Keywords: Wind loads,Pressure coefficients,Double-skillion roof,Hold-down load,Standards
Copyright Information: © 2021 Engineers Australia
Date Deposited: 09 Feb 2022 09:19
FoR Codes: 40 ENGINEERING > 4005 Civil engineering > 400510 Structural engineering @ 100%
SEO Codes: 12 CONSTRUCTION > 1202 Construction design > 120205 Residential construction design @ 40%
12 CONSTRUCTION > 1299 Other construction > 129901 Adaptation to climate change in construction @ 30%
12 CONSTRUCTION > 1202 Construction design > 120203 Industrial construction design @ 30%
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