Fire performance of cold, warm and hybrid LSF wall panels using numerical studies

Dilini Perera, K. Poologanathan*, M. Gillie, P. Gatheeshgar, P. Sherlock, S.M.A. Nanayakkara, K.M.C. Konthesingha

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)
25 Downloads (Pure)


Robust and pre-fabrication construction techniques are the cutting edge practice in the building industry. Cold-frame, warm-frame and hybrid-frame are three common Light-gauge Steel Frame (LSF) wall constructions applied for better energy performance. Still, the applications of the aforementioned wall configurations are restricted due to limited fire safety studies. This paper presents the fire performance investigations and results of cold-frame, warm-frame, and hybrid-frame LSF walls together with three novel configurations maintaining the same material quantities. Successfully validated 3D heat transfer finite element models were extended to six wall configurations. Time variant temperature profiles from Finite Element Analyses were evaluated against the established Load Ratio (LR)-Hot-Flange (HF) temperature curve to determine the structural fire resistance. Modified warm-frame construction showed the best performance where the Fire Resistance Level (FRL) is approximately twice that of conventional LSF wall configurations. Hence, the novel LSF wall configurations obtained by shifting the insulation material toward the fireside of the wall make efficient fire-resistant wall solutions and the new designs are proposed to be incorporated in modular constructions for enhanced fire performance.

Original languageEnglish
Article number107109
Number of pages13
JournalThin-Walled Structures
Early online date22 Sept 2020
Publication statusPublished - 1 Dec 2020


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