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Racking resistance of cold-formed steel wall frame

Ababa, Mary-Ann (2015). Racking resistance of cold-formed steel wall frame. Bachelor of Engineering (4th Year Project) Thesis, Charles Darwin University.

Document type: Thesis
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Author Ababa, Mary-Ann
Title Racking resistance of cold-formed steel wall frame
Institution Charles Darwin University
Publication Date 2015
Thesis Type Bachelor of Engineering (4th Year Project)
Subjects ENGINEERING
0905 - Civil Engineering
Abstract The performance of cold-formed steel (CFS) wall frames in residential building under extreme wind and seismic loading is a major concern in the construction industry. There is a little physical evidence to confirm the ability of such walls to resist horizontal loads (racking load). This leads the author to determine the racking capacity of a cold-formed steel wall frame that is commonly used in lightweight construction in the Northern Territory (NT). The behaviour of the wall frame when subjected to racking load is also investigated.

A CFS wall frame normally consists of top and bottom tracks, vertical studs, bracing and connections, which may be assembled together on site (depending on the connection used) or manufactured in the factory. In this paper, experimental racking tests were performed on a CFS wall frame with aspect ratio of 1.5 (2700mm x 1800mm) and compared to the computer-based Microstran results.

The outcome of this study might provide recommendations and supporting information for building codes and design specifications which may lead to improved methods of designing the CFS wall frames in terms of its performance/capacity, material sizing and connections.
Keyword cold-formed steel (CFS)
racking resistance
wall frame
Microstran
racking test
 
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Created: Wed, 09 Dec 2015, 11:01:08 CST by Jessie Ng