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  • Experimental study of load bearing cold-formed steel wall systems under fire conditions

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    Author(s)
    Gunalan, Shanmuganathan
    Kolarkar, Prakash
    Mahendran, Mahen
    Griffith University Author(s)
    Gunalan, Shanmuganathan (Guna)
    Year published
    2013
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    Abstract
    Light Gauge Steel Framing (LSF) walls made of cold-formed and thin-walled steel lipped channel studs with plasterboard linings on both sides are commonly used in commercial, industrial and residential buildings. However, there is limited data about their structural and thermal performance under fire conditions while past research showed contradicting results about the benefits of using cavity insulation. A new composite wall panel was recently proposed to improve the fire resistance rating of LSF walls, where an insulation layer was used externally between the plasterboards on both sides of the wall frame instead of using ...
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    Light Gauge Steel Framing (LSF) walls made of cold-formed and thin-walled steel lipped channel studs with plasterboard linings on both sides are commonly used in commercial, industrial and residential buildings. However, there is limited data about their structural and thermal performance under fire conditions while past research showed contradicting results about the benefits of using cavity insulation. A new composite wall panel was recently proposed to improve the fire resistance rating of LSF walls, where an insulation layer was used externally between the plasterboards on both sides of the wall frame instead of using it in the cavity. In this research 11 full scale tests were conducted on conventional load bearing steel stud walls with and without cavity insulation, and the new composite panel system to study their thermal and structural performance under standard fire conditions. These tests showed that the use of cavity insulation led to inferior fire performance of walls, and provided supporting research data. They demonstrated that the use of insulation externally in a composite panel enhanced the thermal and structural performance of LSF walls and increased their fire resistance rating. This paper presents the details of the LSF wall tests and the thermal and structural performance data and fire resistance rating of load-bearing wall assemblies lined with varying plasterboard-insulation configurations under two different load ratios. Fire test results including the time-temperature and deflection profiles are presented along with the failure times and modes.
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    Journal Title
    Thin-Walled Structures
    Volume
    65
    DOI
    https://doi.org/10.1016/j.tws.2013.01.005
    Copyright Statement
    © 2013 Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (http://creativecommons.org/licenses/by-nc-nd/4.0/).
    Subject
    Aerospace engineering
    Civil engineering
    Structural engineering
    Mechanical engineering
    Publication URI
    http://hdl.handle.net/10072/69234
    Collection
    • Journal articles

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