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third party listing services, such as Underwriters Laboratory and.engineering analysis based on a comparison with tested assemblies.

prescriptive designs such as those in Section 721 of the IBC.standardized calculation procedures, such as those in ACI/TMS 216.1 and in Section 722 of the IBC.METHODS OF DETERMINING FIRE RESISTANCE RATINGSīecause full-scale fire testing of representative test specimens is not practical in daily practice due to time and financial constraints, the IBC outlines multiple options for alternatives for fire rating determination: In addition to this TEK, a companion spreadsheet is available that allows users to quickly determine the fire rating of concrete masonry assemblies with various finishes, See Fire Rating Companion Spreadsheet, TEK 7-1D (ref. Also included are assemblies composed of concrete masonry and other components, including plaster and gypsum wallboard finishes, and multi-wythe masonry components including clay or shale masonry units. Included are methods for determining the fire resistance rating of concrete masonry walls, columns, lintels, beams, and concrete masonry fire protection for steel columns. The calculation procedure allows the designer virtually unlimited flexibility to incorporate the excellent fire-resistive properties of concrete masonry into a design. This TEK is based on both prescriptive details and tables as well as the calculated fire resistance procedure, which is practical, versatile and economical. The 2014 edition of the ACI/TMS 216.1 is referenced by the 20 IBC for concrete and masonry materials. 1), which outlines a procedure to calculate the fire resistance ratings of concrete masonry assemblies. This TEK is based on the provisions of Code Requirements for Determining Fire Resistance of Concrete and Masonry Construction Assemblies, ACI/TMS 216.1 (ref. 2, 3) governs materials and assemblies used for structural fire resistance and fire-rated separation of adjacent spaces. Concrete masonry is widely specified for fire walls and fire barriers because concrete masonry is noncombustible, provides durable fire resistance, and is economical to construct.Ĭhapter 7 of the International Building Code (IBC) (refs.