Fire resistance of reinforced concrete columns and walls

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ConferenceProceedings of the Canadian Structural Concrete Conference: 1977-06, Ottawa, Ont. Canada
Pages1733; # of pages: 17
Subjectfire resistance; reinforced concrete; fire safety; posts (structures); walls; high rise buildings; fire resistance; concrete; columns; walls; structural interaction; spalling; design criteria; Walls; Concrete columns; resistance au feu; beton arme; securite incendie; poteau (ossature); murs; construction elevee
AbstractRecent high-rise concrete buildings contain load-bearing walls and rectangular concrete columns that may be subjected to fire on more than one side. Existing fire ratings for these members, based on a fully loaded square column exposed to fire on all sides, appear to be excessively conservative. Analytical studies based on temperature-dependent material properties can be used to calculate temperature, stresses, movements, constraint forces and strength of a structure during fire and to replace costly fire tests for determining fire resistance. Such a study was carried out for reinforced concrete columns and walls and new fire ratings determined. The paper discusses the effect of structural interaction and spalling on fire resistance and the relation of fire resistance requirements to the general problem of fire safety, particularly for high-rise buildings.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number16818
NPARC number20358534
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Record identifier7bb02630-3a74-4c66-8e58-05734509dd97
Record created2012-07-20
Record modified2016-05-09
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