Y.L. Liew and C.F. Duffield
Department of Civil and Environmental Engineering
University of Melbourne, Vic 3010, AUSTRALIA.
School of Engineering and Science
Swinburne University of Technology, PO Box 219, Hawthorn, Victoria 3122 AUSTRALIA.
Received 20 Aug 2001; revised 14 Mar 2002; accepted 18 Mar 2002.
While the design and technology of conventional low rise light framed residential structures are relatively simple, their response to lateral loading is quite complex. This is due to the high degree of redundancy, the irregular geometry and interaction between the structural and non-structural components. In addition, the designated lateral bracing elements within one structure may exhibit significantly different behaviour due to the different bracing actions and different materials. This paper focuses on the bracing capacity of plasterboard clad walls which could be considered either structural or non-structural. While such walls may be installed purely as partition walls, they may provide lateral strength and stiffness due to the complex load paths. The paper presents in detail the possible load transfer mechanisms to a variety of typical walls. It also highlights the difficulty with performing racking tests on isolated walls due to the complex boundary conditions surrounding walls in real structures. In addition, the paper reports racking test results that demonstrate the effects of different boundary conditions on the load carrying capacity and the failure modes.
Residential, lateral bracing, load sharing, plasterboard, light framed walls.