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Diaphragm action in light steel framing by sheathing boards

Lawson, R.M, Kermani, A., Stergiopoulos, M., Coste, G. and Way, A. (2020) Diaphragm action in light steel framing by sheathing boards Engineering Structures, 220, 110952.

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This paper presents the results of shear tests on light steel walls with two types of higher specification OSB/3 board and comparison with elastic theory based on the fixing shear stiffness. The tests were performed to BS EN 594 and showed that the design shear resistance was determined as 5.1 kN/m wall length for a limiting deflection of 0.003H or 4.3 kN/m for a limiting deflection of H/500, where H is the wall height. With plasterboard on the opposite face, the shear stiffness increased by 29%, but these results were more variable. For a single test on a wall with the OSB/3 board on one side and X bracing on the opposite face, the design shear resistance is 5.6 kN/m for a limiting deflection of H/500. For a flame retardant form of OSB/3 board, the stiffness was 21% higher than for the first series of OSB/3 tests. An elastic theory is presented to determine the limiting shear force as a function of the shear stiffness of the fixings between the boards and the C sections, which was provided from small-scale push tests. The results are compared with finite element models and a comparison with the test configurations is presented.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Civil and Environmental Engineering
Authors :
Kermani, A.
Stergiopoulos, M.
Coste, G.
Way, A.
Date : 30 June 2020
DOI : 10.1016/j.engstruct.2020.110952
Copyright Disclaimer : © 2020 Elsevier Ltd. All rights reserved.
Additional Information : Embargo OK Metadata OK No Further Action
Depositing User : James Marshall
Date Deposited : 27 Jul 2020 13:56
Last Modified : 27 Jul 2020 13:56

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