The paper is intended to summarize findings from fire resistance tests on composite beams with ends restrained against rotation. The specimens were comprised of H-shaped steel beam and overlying composite slab with profiled steel decks, with studs at the interface. A total of four models were tested. The test parameters included the level of load. Based on the test results, a new formulation is proposed to calculate with a good accuracy, the flexural strength under positive moment on the basis

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... f the plastic theory taking account of the heat-induced degradation of steel / concrete materials and shear capacity of studs in the positive moment area, and the local buckling strength under negative moment on the basis of the models taking account of the post-peak strength behaviors which were obtained from stub-column tests.