| There is a need to develop an analytical methodology for the design of steel framed structures exposed to fire to provide engineers with a design approach which will achieve a known level of performance.;A simple approach is presented for the design of steel beams. This approach requires modification of the standard flexure formula to account for fire effects. Only a general description of this approach is presented, however, guidance is presented for the development of the information necessary to prepare design charts, tables and other design aids.;In addition to this general description, a detailed technique for determining the thermal impact of a fire is presented. This technique was developed in such a way that it may be used as part of the general design method. This approach involves a new technique to determine a post-flashover fire's time-temperature history. Based on this, a new method is presented for determining the time-temperature field in an exposed steel beam as well as a means to determine an equivalent time in the ASTM E119 Standard Fire Test Furnace for heavily insulated as well as bare steel beams. |
