![]() next to each other allow for an easy comparison of composite views. However, various limit states and vulnerabilities to fires were observed, including local buckling of steel beams near supports, flexural failure (yielding of steel beams and concrete fracture near restrained end supports), and connection failure (weld shear or bolt shear) during heating and cooling, which could lead to partial or total collapse of the floor system. A composite view displays multiple pieces of architectural data in formats that are. The specimens resisted gravity loads at large vertical displacements near midspan (approximately a ratio of span length over 20) under fire loading. The test results indicated that there were significant effects of thermal restraints on the behavior and failure modes of the specimens with simple shear connections. This study evaluated the characteristics of the fire loading and thermal and structural responses of the specimens. Each specimen was subjected to gravity loading using hydraulic actuators and 4,000-kW compartment fires produced using natural gas–fueled burners. A nested state machine may have at most one initial state and one final state. ![]() A state which has substates (nested states) is called a composite state. Composite States can be further broken down into substates (either within the state or in a separate diagram). Test variables included two types of simple shear connections (shear-tab and welded-bolted double-angle connections) and the presence or absence of slab continuity over the girders. A simple state is one which has no substructure. Specimens were constructed as partially composite beams, consisting of W 18 × 35 steel beams and 83-mm-thick lightweight concrete slabs cast on top of 76-mm-deep ribbed steel deck units. A region is created and the simple State is converted to a composite State. This paper presents the results of compartment fire experiments on four 12.8-m-long composite floor beams with various end support conditions.
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