AbstractProgress in the field of theoretical prediction of fire resistance has been rapid in recent years. A procedure has been developed at the National Research Council of Canada for calculation of the fire resistance of structural members. The various steps in the construction of a mathematical model to calculate temperatures, deformations and strength are shown using as an example the calculation of the fire resistance of a cylindrical tubular steel column filled with concrete. A comparison of results calculated using the model with those of a fire test is also discussed.
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