Pull-through failure tests of thin steel roof battens under wind uplift load

Sivapathasundaram, Mayooran & Mahendran, Mahen (2014) Pull-through failure tests of thin steel roof battens under wind uplift load. In LaBoube, Roger A. & Yu, Wei-Wen (Eds.) 22nd International Specialty Conference on Cold-Formed Steel Structures, Missouri University of Science & Technology, St Louis, Missouri, USA, pp. 679-696.

Abstract

Thin profiled steel roof sheeting and battens are increasingly used in the construction of roofing systems of residential, commercial, industrial and farm buildings in Australia. The critical load combination of external wind suction and internal wind pressures that occur during high wind events such as thunderstorms and tropical cylcones often dislocate the roofing systems partially or even completely due to premature roof connection failures. Past wind damage investigations have shown that roof sheeting failures occured at their screw connections to battens. In most of these cases, the screw fastener head pulled through the thin roof sheeting whilst the screw fasteners also pulled out from the battens. Research studis undertaken on the roof sheeting to batten connection failures have improved this situation. However, the batten to rafter or truss connections have not been investigated adequately. Failure of these connections can cause the failure of the entire roof structure as observed during the recent high wind events. Therefore a detailed experimental study consisting of both small scale and full scale tests has been undertaken to investigate the steel roof batten pull-through failures in relation to many critical parameters such as steel batten geometry, thickness and grade, screw fastener head sizes and screw tightening. This paper presents the details of this experimental study and the pull-through failure load results obtained from them. Finally it discusses the development of suitable design rules that can be used to determine the pull-through connection capacities of thin steel roof battens under wind uplift loads.

Impact and interest:

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ID Code: 84624
Item Type: Conference Paper
Refereed: Yes
Keywords: Cold-formed steel structures, Light gauge steel roofing systems, Steel battens, Wind upift forces, Pull-through failures, Experiments, Design rules
Divisions: Current > Schools > School of Civil Engineering & Built Environment
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2014 [please consult the authors]
Deposited On: 01 Jun 2015 22:24
Last Modified: 01 Jun 2015 22:25

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