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S • 1I Morgan g Il'` ThnrmalCeratnins r 38UE -; DECEOVEI Morgan Thermal Ceramics JUL 14 2022 J 1 Thermal Ceramics Inc. [1\\ JUL 01 2022 PO Box 923 CITY OF EVERETT 2102 Old Savannah Road,30906 Permit Services CITY OF EVERETT Augusta,Georgia30903 Permit Services T 706 7964306 F 706 560 4056 July 17,2012 Subject: Similarity of ASTM E 119 and ISO 6944 The purpose of this letter is to compare the two fire test standards ASTM E 119 and ISO 6944. General Comparison ASTM E 119 is titled: "Standard Test Methods for Fire Tests of Building Construction and Materials."In the scope it is stated, "This standard is used to measure and describe the response of materials,products, or assemblies to heat and flame under controlled conditions..." ISO 6944 is titled: "Fire Containment—Elements of Building Construction—Ventilation Ducts." In the introduction it is stated,"The purpose of this test is to measure the ability of a representative duct or duct assembly that is part of an air-distribution system to resist the spread of fire from one fire compartment to another, with fire attack from inside or outside the duct. It is applicable to vertical-and horizontal ducts, with or without branches, taking into account joints and exhaust openings, as well as suspension devices and penetration points." It is clear from the descriptions that ASTM E 119 is a general fire test standard which may be applied to a number of materials and building products. In order to apply ASTM E 119 to an air duct the test standard. must be modified. To do this a duct must be mounted in a furnace which will heat the duct up at the rate prescribed in the test standard, simulating a fire occurring outside of the duct in order to demonstrate the ability of the duct enclosure system to remain intact on the duct and protect it from the effects of a fire. Other determinations may be made during the fire test, such as the ability of the duct support system to withstand a fire, and a through-penetration firestop system may be evaluated.None of this is described in ASTM E 119. ISO 6944 is a fire test standard specifically designed for ventilation duct construction used,in building to evaluate the spread of fire from one part of a building to another, to evaluate the duct enclosure and support systems during a fire, and to evaluate a through-penetration firestop system. Since ISO 6944 is specifically designed for air ducts the test standard requires no modification. www.morganthermalceramics.corn Morgan Thermal Ceramics,Thenne!Ceramics Inc Augusta,Georgia