E - Fixed Constructions – 04 – B
Patent
E - Fixed Constructions
04
B
E04B 1/94 (2006.01) E04C 3/02 (2006.01) E04C 3/20 (2006.01) E04C 3/293 (2006.01) E04C 3/294 (2006.01)
Patent
CA 2461678
The method of designing a fire resistant structural beam including a plurality of apertures, comprising obtaining a plurality of values for a plurality of physical parameters of the structural beam and a fire resistance time for the fire resistant structural beam; reading temperature information for the fire resistance time, the temperature information comprising, or derived from, a plurality of temperatures at a plurality of locations on a fabricated beam that is similar to the structural beam and wherein the plurality of temperatures were obtained from a fire test of the fabricated beam after the fire resistance time had elapsed; reading modifying factor information for the fire resistance time comprising at least one modifying factor for each aperture, wherein the modifying factor is derived from empirically obtained temperatures measured adjacent an aperture of a further fabricated beam from a fire test of the further fabricated beam; calculating a property of the structural beam at one or more locations of the beam and at each location calculating the property at the temperatures from the temperature information and to calculate a property of the structural beam around and in the vicinity of the apertures of the beam using temperatures obtained by multiplying the temperatures of the temperature information by the modifying factor; and generating an output indicating whether the beam is likely to fail in accordance with the calculating step.
Publié sans précis
Newman Gerald M.
Pottage Alan Victor
Fabsec Ltd.
Ridout & Maybee Llp
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