Author: M. O'Connor, N. Galluzzi and W. Hamad (all WSP)
2 January 2018
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M. O'Connor, N. Galluzzi and W. Hamad (all WSP)
As performance-based design of fire-protected steel structures becomes more prevalent, it is important to investigate the behaviour of protected beams with web openings in complete frames under natural fires. This paper outlines the technical background before considering the development of more realistic performance within the design of optimised fire-protection systems of composite floor plates
Most structures in Europe are constructed using limit state design methods. Most of these structures are protected against some form of specified fire scenario. However, only a small minority of projects link these two major considerations together to form part of a unified structural fire design process. The Eurocodes provide designers with the necessary procedures to undertake an accurate and economical structural fire design, yet few engineers ever consider undertaking such an assessment. This article will focus on the load actions and combinations to be considered that enable the engineer to perform an adequate structural assessment for the accidental limit state in fire. It will also cover important considerations to ensure that any structural fire engineering strategy is appropriately aligned, and the key information is available within the contract chain to facilitate this performance-based approach.
A paper written as a collaboration between AECOM fire engineers and structural engineers in an effort to elevate the subject and improve our mutual understanding of structural performance in fire. Intended as a high-level introduction for practising structural engineers.
The Grenfell Tower tragedy in London last June was a stark reminder of how rapidly a fire can spread and the horror which it can cause. In the wake of this disaster, the UK construction industry is actively examining what can be done to minimise the risk of similar tragedies in the future. It is likely that one of the recommendations will be a clearer identification of responsibilities, but whatever the outcome it will clearly be helpful for all members of the design team to have a good understanding of all aspects of fire safety, as well as detailed knowledge about those aspects under their direct control.