Fire performance of cold-formed steel wall panels and prediction of their fire resistance rating

Gunalan, Shanmuganathan & Mahendran, Mahen (2014) Fire performance of cold-formed steel wall panels and prediction of their fire resistance rating. Fire Safety Journal, 64, pp. 61-80.

[img]
Preview
Accepted Version (PDF 146kB)
[img]
Preview
Tables (PDF 58kB)
Supplemental Material.
[img]
Preview
Figures (PDF 1MB)
Supplemental Material.

View at publisher

Abstract

Recent research at the Queensland University of Technology has investigated the structural and thermal behaviour of load bearing Light gauge Steel Frame (LSF) wall systems made of 1.15 mm G500 steel studs and varying plasterboard and insulation configurations (cavity and external insulation) using full scale fire tests. Suitable finite element models of LSF walls were then developed and validated by comparing with test results. In this study, the validated finite element models of LSF wall panels subject to standard fire conditions were used in a detailed parametric study to investigate the effects of important parameters such as steel grade and thickness, plasterboard screw spacing, plasterboard lateral restraint, insulation materials and load ratio on their performance under standard fire conditions. Suitable equations were proposed to predict the time–temperature profiles of LSF wall studs with eight different plasterboard-insulation configurations, and used in the finite element analyses. Finite element parametric studies produced extensive fire performance data for the LSF wall panels in the form of load ratio versus time and critical hot flange (failure) temperature curves for eight wall configurations. This data demonstrated the superior fire performance of externally insulated LSF wall panels made of different steel grades and thicknesses. It also led to the development of a set of equations to predict the important relationship between the load ratio and the critical hot flange temperature of LSF wall studs. Finally this paper proposes a simplified method to predict the fire resistance rating of LSF walls based on the two proposed set of equations for the load ratio–hot flange temperature and the time–temperature relationships.

Impact and interest:

3 citations in Scopus
Search Google Scholar™
4 citations in Web of Science®

Citation counts are sourced monthly from Scopus and Web of Science® citation databases.

These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.

Citations counts from the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.

Full-text downloads:

36 since deposited on 02 Apr 2014
8 in the past twelve months

Full-text downloads displays the total number of times this work’s files (e.g., a PDF) have been downloaded from QUT ePrints as well as the number of downloads in the previous 365 days. The count includes downloads for all files if a work has more than one.

ID Code: 69714
Item Type: Journal Article
Refereed: Yes
Keywords: Cold-formed steel wall panels, Load bearing walls, Critical temperature, Steel studs, Plasterboards, Standard fire
DOI: 10.1016/j.firesaf.2013.12.003
ISSN: 03797112
Divisions: Current > Schools > School of Civil Engineering & Built Environment
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 02 Apr 2014 22:31
Last Modified: 06 Dec 2016 22:11

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page