STP464

    Temperature Criteria at Failure

    Published: Jan 1970


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    Abstract

    ASTM Methods E 119 designate several temperature criteria as end points for fire tests. In tests of walls, floors, and roofs, the temperature rise of the unexposed surface is limited to 250 F average or 325 F at any one point. Steel temperatures are limited in tests of certain types of elements. This paper examines the background for these temperature limits by reviewing published data; new data are presented in some cases. The unexposed surface temperature criteria should be re-examined. Limiting steel temperatures are not valid for structural members in which the stresses are altered significantly by the effects of fire.

    Keywords:

    beams, concrete, failure, fire tests, floors, reinforced concrete, restraint, roofs, slabs, steel construction, thermal expansion, walls, evaluation, tests


    Author Information:

    Gustaferro, A H
    Manager, Fire Research Section, Portland Cement Association Research and Development Laboratories, Skokie, Ill.


    Paper ID: STP44712S

    Committee/Subcommittee: E05.22

    DOI: 10.1520/STP44712S


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