Comparison of severity of exposure in ASTM E 119 and ISO 834 fire resistance tests

ABSTRACT: Using specimens similar to those described in the draft view of the fact that the effects of adopting some IS0 techniques on revision of ASTM E 119, tests were conducted in floor and wall fire test the result of fire endurance tests are not clearly understood. furnaces. The tests were designed to compare the practical conse- At the latest meeting of the Task Group it was agreed that quences of following the AslTvf E 119 and IS0 834 specifications for ISO temperature-time curve for furnace control and the ISO tech- measuring and controlling the nominal furnace temperature. It has been found that in fire tests of shorter duration, perhaps up to 1.5 h, the nhue of measuring the furnace temperature will be tentatively in- ASTM test is slightly more severe than the IS0 test. In longer tests the cluded in the rewrite, and that quantitative information on the ef- difference in severities is negligible. Some observations co&rning the fect of this change will be provided to the members of ASTM