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    Applications of Built-up Sections in Lightweight Steel Trusses

    134010_ICSAS.pdf (323.4Kb)
    Access Status
    Open access
    Authors
    Mei, C.
    Ng, A.
    Lau, Hieng Ho
    Toh, S.
    Date
    2009
    Type
    Conference Paper
    
    Metadata
    Show full item record
    Citation
    Mei, C.C. and Ng, A.l.Y and Lau, H.H. and Toh, S.L. 2009. Applications of Built-up Sections in Lightweight Steel Trusses, in S.L. Chan (ed), Sixth International Conference on Advances in Steel Structures, Dec 16 2009, pp. 857-864. Hong Kong, China: The Hong Kong Institute of Steel Construction.
    Source Title
    Proceedings of Sixth International Conference on Advances in Steel Structures and Progress in Structural Stability and Dynamics
    Source Conference
    Sixth International Conference on Advances in Steel Structures
    ISBN
    9789889914066
    Faculty
    Sarawak
    Department of Civil and Construction Engineering
    School of Engineering and Science
    Miri Campus
    School
    Curtin Sarawak - Faculty Office
    URI
    http://hdl.handle.net/20.500.11937/5026
    Collection
    • Curtin Research Publications
    Abstract

    Lightweight steel structures have been widely used in the construction industry. It is flexible and thus can be designed to cater for different usages. To enhance the application of cold-formed steel structures, innovative configurations are developed. These include increasing the load bearing capacity of the structure and stretching it over a larger span. Built-up section of lipped channels, either back-to-back or boxed-up for the critical elements of a truss is often adopted when it may have practical limitations in increasing the truss depth. This paper presents some of such applications in the construction industry. The built-up section possesses apparent improvement in lateral stiffness. Although these sections act together, they are currently designed individually. Current design codes do not have comprehensive provision for the design of built-up sections reflecting the improvement in design strength. The modified slenderness ratio for built-up sections in the American Iron and Steel Institute (AISI) North American Specification for the Design of Cold-Formed Steel Structural Members is adopted from researches and recommendations for hot-rolled sections. From literature search, field observation and preliminary test conducted, it reveals that the modification rule can be further developed to better reflect the improvement in the slenderness ratio of the built-up sections.

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