Division 7 Ebook Page 586 Steel Stud Perimeter Fire Containment Joint ASTM E2307 Tech Bulletin

Technical Bulletin SS-04 ENCLOSURE SOLUTIONS Steel Stud Perimeter Fire Containment System ASTM E2307 Perimeter Fire Containment Perimeter fire containment systems are designed to prevent fire and hot gases from entering the room above the room of origin through voids that exist at the intersection of a rated floor assembly and a non-rated exterior wall. An unprotected void at the edge of the slab potentially creates a pathway for fire and/or smoke to spread from floor to floor in a building. Although such joints are often small, 2"-3" wide, consider that for a building with a floor plate size of 200' 200', 800 lineal feet, an unprotected joint 3" wide creates 200 square feet of open area along the perimeter that will allow smoke and hot gases to flow freely from floor to floor. Fire can also pass through voids or combustible materials in the curtain wall itself. Given that the condition exists at each floor, the potential for fire and smoke spread is significant. The Owens Corning Enclosure Solutions for Steel Stud Perimeter Fire Containment System with Thermafiber has all of the products and details necessary to design and construct steel stud perimeter fire containment systems in accordance with ASTM E2307 and the International Building Code 1 (IBC) to prevent fire from spreading from floor to floor. International Building Code (IBC) The 2015 IBC, Section 715.4, requires approved perimeter fire containment systems at the intersection of the non-rated exterior curtain wall and fire-resistance-rated floor assemblies when the floor/ceiling assembly is required to be fire resistance rated. Although local codes may vary, generally fire resistance rated floor/ceiling assemblies are required in construction types I-A, I-B, II-A, III-A, and V-A. Perimeter fire containment systems must be tested or determined via an engineering judgment in accordance with ASTM E2307 and provide an "F-rating" for a time period at least equal to the fire resistance rating of the floor/ ceiling assembly. Perimeter fire containment systems will serve any typical building situation with an F-rating of up to two hours. Even when the floor/ceiling assembly is not required to be fire resistance rated, Section 715.4.1 still requires that the joint be sealed with an approved material or system such as Owens Corning Thermafiber Safing and FireSpan Insulations to retard the interior spread of fire and hot gases between stories. ASTM E2307 2 measures the ability of perimeter fire barrier systems to maintain a seal and prevent interior fire spread as the exterior wall assembly deflects/deforms during fire exposure. The ASTM E2307 test exposes the joint to fire from the room of fire origin, and the exterior wall to fire from both interior and the exterior as the fire plume exits the room of fire origin through a window opening. The fire exposure conditions used are outlined in the ASTM test methods for the first 30 minutes and then essentially parallel the ASTM E119 3 time-temperature relationship for fire resistance. ASTM E2307 determines the period of time that the perimeter fire containment system will limit flame penetration through the opening between the exterior wall assembly and the floor assembly. Perimeter Fire Containment System Design Section 715.4 of the 2015 IBC, requires "approved" perimeter fire containment systems. Although exterior wall system designs vary significantly, the Owens Corning Enclosure Solutions for Steel Stud Perimeter Fire Containment System with Thermafiber is specific in its construction and has all of the products and details necessary to design and construct steel stud perimeter fire containment systems in accordance with ASTM E2307 and the International Building Code (IBC) when they are required. For complete details see wall section Detail CC-SS-12. Unprotected Perimeter Joint Perimeter Fire Containment System

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