In this study, the fire resistance tests of the composite and the steel beam under loading were carried out in order to get fire resistive properties of a composite beam and to obtain basic data for the fire resitance design for CFT-Steel construction. It was observed in the tests that the composite beam under live load and dead load was not collapsed even in high temperature (over 500℃) and thermal expansion of the composite beam has the same tendency as that of the steel beam.
