1. Rationale
Additional items X3.9 through X3.12 are suggested for Appendix X3 toprovide more rigorous and detailed explanation of the thermal restraint topic. Item X3.9 provides an overview of floor/roof test methods, and the restrained and unrestrained assembly ratings derived from these tests. Item X3.10 provides a similar overview of the loaded beam test, and the restrained beam ratings (derived from loaded beam test) and the alternative unrestrained beam ratings (derived from beam or floor/roof tests). Item X3.11 describes the physical/mechanical nature of the restrained conditions in restrained tests, and outlines their similarities and differences with real construction. Item X3.12 provides a general description of thermal expansion and restraint phenomena in floor/roof and beam tests, and their role in the performance of test specimens. Also - Additional items X3.13 through X3.15 are suggested for Appendix X3. Item X3.13 discussed the comparative performance of floors and beams in restrained and unrestrained tests. Item X3.14 compares the deflections associated with temperature-based unrestrained ratings and similar restrained ratings. Item X3.15 discusses the effects of restraint on wood-framed construction.
Keywords
beams; building construction; building materials; ceiling assemblies; columns; fire; fire endurance; fire-resistance; fire-resistance rating; fire-test-response standard; floor assembly; floors; restrained rating; restraint; roofs; roof assembly; truss; unrestrained rating; walls; Beams/girders; Column tests; Fire testing--building materials; Flooring/floor covering systems; Hose stream test; Nuclear applications/materials--steel; Partitions; Structural building materials/applications; Structural steel (SS); ICS Number Code 13.220.50 (Fire-resistance of building materials and elements); 91.100.01 (Construction materials)
Citing ASTM Standards
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