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Fire resistance of unprotected steel columns

From National Research Council Canada

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DOIResolve DOI: https://doi.org/10.4224/40001753
AuthorSearch for: ; Search for: 1
Affiliation
  1. National Research Council of Canada
FormatText, Article
SubjectPerformance of:; posts (structures); structural steel; fire resistance; fire resistance tests; standards
Abstract
Fire resistance of unprotected steel columns is examined by standard fire test and numerical analyses based on a 1,000 D F (538 D C) critical temperature for failure. It is shown that fire resistance time varies with the shape factor of column weight divided by the heated perimeter, and two simple equations for calculating the fire resistance times of unprotected steel columns are established. A practical example shows that large columns used in high-rise buildings can have fire resistance times of up to one hr. The more conservative of the two equations is recommended for use in building standards.
Publication date
PublisherNational Research Council of Canada. Division of Building Research
Series
  • Research Paper (National Research Council of Canada. Division of Building Research), no. DBR-RP-577 (May 1973).
NoteReprinted from: Journal of the Structural Division, ASCE, v. 99, no ST5, PROC. Paper 9719. May 1973, p. 837-852. ISSN: 0044-8001
LanguageEnglish
Peer reviewedYes
NRC numberNRCC 13589
NRC-IRC-4125
NPARC number20358546
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Record identifier70724174-bb3b-411a-aab0-0320464c005d
Record created2012-07-20
Record modified2024-01-11
Date modified: