Author: L. Sullivan (AkzoNobel Protective Coatings)
2 January 2018
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L. Sullivan (AkzoNobel Protective Coatings)
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 importantconsiderations 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.
Structural fire engineering is often adopted in large open-plan structuressuch as airport terminals, railway stations, etc., where the low fire risk can be directly conceived and a structural fire analysis may bring significant savings on structural fire protective coatings. In some recent cases, structural fire engineering approaches have also been applied to landmark high-rise buildings in China. This paper introduces four different examples of such methods with varying motivations, approaches and ultimate design schemes, to provide readers with an insight into the commercial application of structural fire engineering in China.
Fire is a basic hazard which can devastate buildings, cities and regions. It is therefore an essential part of an engineer’s skill set to understand and control the risk. Control is a key word, for the risk can never be eliminated, as the recent Grenfell Tower fire in London reminds us. That event was truly a nightmare: an out-of-control fire destroying a whole residential tower, killing 71 occupants. In the same contemporary timeframe, wild fires in California destroyed approx. 9000 structures and left over 40 dead, reminding us of the consequences of regional fires. How these catastrophes happened is yet to be established. It is said that lessons should be learned, and so they should, since the history of fire engineering is largely one of reaction to disasters. As a start, it’s worth observing, as some of the papers in this special issue do, that the basic skills of ‘fire engineering’ are probably absent among many of us. That situation stems partly from an omission of basic training; perhaps from a feeling that this is a speciality for others, and perhaps because advances have been rapid. This is unsatisfactory and unsafe. Fire protection needs to be ensured overall between the architects, plant engineers and structural engineers who make up any project team: we have collective obligations to make buildings ‘safe’.