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Deflection and failure of steel-supported floors and beams in fire

From National Research Council Canada

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DOIResolve DOI: https://doi.org/10.4224/40001473
AuthorSearch for: 1
Affiliation
  1. National Research Council of Canada
FormatText, Article
SubjectFloors; fire tests; structural steel; creep; floors; steel joists; deflection; fire tests; steel construction; floors; beams; structural steel; creep; deflection; failure; building construction; deformation; thermal expansion
Abstract
Some basic information concerning the deformation of solids is discussed briefly. In addition to presenting some practical data, a theory is also outlined. This theory may be characterized as an expansion of Dorn's creep theory into a form applicable to the calculation of deformation processes at variable temperatures and stresses. Rigorous and simplified techniques are described for the calculation of the deflection of joists and beams during fire exposure and temperature criteria of structural failure are developed. For an A 36 steel beam, for example, the criterion of failure is T(alpha c)=[70,000 divided by 45.62- 4.23(I[d]/I)]-460(in deg F). An obvious shortcoming of ASTM Methods E 119 is pointed out.
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-345 (December 1967).
NoteReprinted from: ASTM Special Technical Publication, no. 422, 1967, p. 40-62. ISSN: 0066-0558
LanguageEnglish
Peer reviewedYes
NRC numberNRC 9933
NRC-IRC-1583
NPARC number20379016
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Record identifierae416a80-ea13-4bfa-a877-dfb47aa50302
Record created2012-07-24
Record modified2024-01-31
Date modified: