Research

Fire resistant steel buildings in the frame

Image courtesy of QUT

QUT Engineering Professor Mahen Mahendran has been awarded a quarter-of-a-million dollar grant from the Australian Research Council (ARC), to investigate the fire resistance of common pre-fabricated steel wall systems, with the project ultimately aiming to improve the safety of newly-constructed buildings.

Professor Mahendran said the project, in collaboration with the National Association of Steel-Framed Housing (NASH), would specifically examine the fire resistance levels of complex, high-strength Light Gauge Steel Framed (LSF) wall systems, which are being increasingly used in low and mid-rise buildings around the world.

“We are seeing plasterboard-lined LSF walls being used more and more, because they are a cost-effective load-bearing wall, but that has required new wall designs, which involve complex steel stud wall configurations. The real issue is that their fire resistance is not yet fully understood,” Professor Mahendran said.

“This project aims to investigate the thermal and structural behaviour of those wall systems when they are exposed to fire, and to also develop a generic model for predicting fire resistance levels of LSF wall systems,” he said.

While unrelated to the cladding issue that is currently in the spotlight, Professor Mahendran said he was pleased that this project would further increase awareness of fire-resistance levels and make important fire resistance data on LSF wall systems more accessible to the construction industry.

“We want to help make buildings as safe as possible and provide useful information to benefit not only the community, but also the Australian steel industry and the construction sector.

“Once we have developed fire resistance levels for commonly used LSF wall systems, they can then be included in a national Fire Design Handbook, and we will be in a position to propose improvements to the construction detail of the wall systems, to enhance fire resistance.

“This research will address one of the most significant current challenges for ensuring cost-effective but fire safe building construction worldwide. QUT’s research team is looking forward to working closely with NASH on this important project,” he said.

The project is planned to run until June 2021 and will include full scale fire tests at QUT’s Wind and Fire Lab and computer modelling on hundreds of potential wall system combinations.

The $258,778 grant was one of several new research partnerships announced under the ARC Linkage Projects scheme. Further details on the Linkage Projects scheme is available from the ARC.

In addition to the grant, the project is being supported by NASH with almost $100,000 in funding as well as in-kind support.

Source: QUT

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