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ISO TR 24679-3

Fire safety engineering - Performance of structure in fire - Part 3: Example of an open car park

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Organization: ISO
Publication Date: 1 August 2015
Status: active
Page Count: 48
ICS Code (Protection against fire in general): 13.220.01
scope:

This Technical Report provides a fire safety engineering application relative to fire resistance assessment of an open car park according to the methodology given in ISO/TS 24679. This report describes the adopted process which followed the same step by step procedure as that given within ISO/TS 24679. The Annexes of this Technical Report presents the detailed numerical analysis results obtained for most severe fire scenarios on the basis of this specific fire safety engineering procedure for open car parks.

The fire safety engineering applied here to open car parks, with respect to their fire resistance, considers specific design fire scenarios as well as corresponding fire development. It takes account of localized heating, global structural behaviour rather than single structural member resistance, etc.

In fact, in case of fire in open car parks, only a small part of structure will be exposed directly to fire because of the limited fire spread due to open environment as well as rapid fire brigade intervention. In consequence, the load redistribution to cold parts might become possible and can be taken into account through global structural analysis.

This kind of approach based on 3D modelling of the mechanical response of composite floor was already used in various fire safety engineering projects in France to check the stability of unprotected composite steel framed open car parks subject to most severe real fire scenarios.

Finally, it should be mentioned that these severe fire scenarios have been selected for fire resistance purposes only. They should not be used, for example, for smoke control purposes.

Document History

ISO TR 24679-3
August 1, 2015
Fire safety engineering - Performance of structure in fire - Part 3: Example of an open car park
This Technical Report provides a fire safety engineering application relative to fire resistance assessment of an open car park according to the methodology given in ISO/TS 24679. This report...

References

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