SYMPOSIA PAPER Published: 01 January 1970

Temperature Criteria at Failure


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.

Author Information

Gustaferro, A, H
Portland Cement Association Research and Development Laboratories, Skokie, Ill.
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Developed by Committee: E05
Pages: 68–84
DOI: 10.1520/STP44712S
ISBN-EB: 978-0-8031-6038-5
ISBN-13: 978-0-8031-6192-4