HISTORIC - 1228 N Broadway - Plan

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ESR-5175 Page 4 of 8 4.3.6 Sealer (Required for Systems B and C): The sealer must be one of the following: • Two coats of Dex-O-Tex Aero-Flor 100 Sealer, or two coats of Dex-O-Tex Clear Sealer HD 50 sealer roller- applied over the top coat at a rate of 1 gallon per 400 square feet (1 L/9.8 m2), for a minimum wet-film thickness of 0.0053 inch [5.3 mils (0.13 mm)] for each coat. The first coat must be allowed to dry for a minimum of 30 minutes before application of the second coat. • Two coats of Dex-O-Tex Weatherseal XL Sealer, roller-applied over the protection coat at a rate of 1 gallon per 400 square feet (1 L/9.8 m2), for a minimum wet-film thickness of 0.011 inch [11 mils (0.28 mm)] for each coat. The first coat must be allowed to dry for a minimum of 30 minutes before application of the second coat. • As an additional option for System C, two coats of Dex-O-Tex AJ-44 XL must be roller-applied over the protection coat at a rate of 1 gallon per 300 square feet (1 L/7.4 m2), for a minimum wet-film thickness of 0.011 inch [11 mils (0.28 mm)] for each coat. The first coat must be allowed to dry for approximately one hour before application of the second coat. For all sealers, after application of the second coat, the coating must be allowed to dry for 12 to 24 hours before traffic is allowed on the coating. 4.4 Systems D, E and F (Installation over Concrete – See Table 2): Application of the waterproofing layer and protection coat, must be as described in Sections 4.3.3 and 4.3.4, respectively. For Systems D and E application of the topcoat must be as described in Section 4.3.5. For Systems D and F application of the sealer must be as described in Section 4.3.6. 4.5 System G (Installation over Concrete–See Table 2): Application of the waterproofing layer and sealer must be as described in Sections 4.3.3 and 4.3.6, respectively. For application of the protection coat, one gallon (3.8 L) of Dex-O-Tex Stamp-Cote Liquid must be mixed with a 45-pound (20.5 kg) bag of Dex-O-Tex Stamp-Cote Powder and applied with a spreader rake and closed with a float trowel over the waterproofing layer at a rate per batch of 18 square feet(1.7 m2) for the minimum 1/4- inch (6.4 mm) thickness, 13.5 square feet (1.3 m2) for the 3/8-inch (9.5 mm) thickness, or 9 square feet (0.83 m2) for a thickness of 1/2 inch (12.7 mm). The coating is processed and stamped and allowed to cure for a minimum of 12 hours. 4.6 Method of Repair: The damaged area must be removed and replaced as required for a new installation, as described in Section 4.3, 4.4, or 4.5. When substrate damage occurs, the retention of the fire-resistance rating and strength properties must be investigated, and the results submitted to the code official. 4.7 Wind Resistance: Under the 2021 and 2018 IBC, the Dex-O-Tex Dex-Flex Decking system may be used in areas subject to a basic wind speed (V) of 130 mph (209 km/h) on structures with a maximum height of 40 feet (12,192 mm) in Exposure B areas. Under the 2021 IRC, 2018 IRC, 2015 IBC, 2015 IRC, and 2012 IBC, the Dex-O-Tex Dex-Flex Decking system may be used in areas subject to an ultimate design wind speed (Vult) of 130 mph (209 km/h) on structures with a maximum height of 40 feet (12,192 mm) in Exposure B areas. Installation must be limited to areas where the maximum basic wind speed, building height and exposure comply with Tables 3 and 4 of this report, as applicable. 4.8 Class A Roof Covering Construction: When Dex-O-Tex Dex-Flex Decking systems are applied over concrete or 5/8-inch-thick (15.9 mm) exterior- grade plywood substrates with all edges blocked, the systems have a Class A roof classification, provided the maximum slope does not exceed 1/2 inch per foot (4% slope). 4.9 One-hour Fire-resistance-rated Construction: The deck system described in Section 4.3 of this report, when applied over 5/8-inch-thick (15.9 mm) exterior- grade plywood, with nominally 2-by-10 (51 by 254 mm) joists spaced at 16 inches (406 mm) on center, and all plywood joints blocked, can be recognized as a substitute for the double wood floor described in Assembly 13 of Table 721.1(3) of the 2021, 2018, 2015 and 2012 IBC (Table 720.1(3) of the 2019 IBC and 2006 IBC).