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� ESR-3159 I'Most�dely Accepted and Trusted Page 5 of 5 <br /> TABLE 2—NFPA 285 COMPLYING EXTERIOR WALL ASSEMBLIES IN TYPES I,II,111 AND IV CONSTRUCTION <br /> WALL COMPONENT MATERIALS <br /> 1–Concrete wall <br /> 2–Concrete masonry wall <br /> 3-1 layer 5/e-inch-thick Type X gypsum wallboard complying with ASTM C36 or C1396 on interior, <br /> Base Wall System– installed over steel studs,minimum 35/e-inch-deep,No.20 gage,C-shaped,spaced a maximum of <br /> Use either 1,2 or 3 24 inches on center.Gypsum wallboard must be attached with No.6,1'/4-inch-long self-tapping screws <br /> located 8 inches on center along the perimeter and in the field of wallboard.Gypsum wallboard joints <br /> must be taped and treated with joint compound in accordance with ASTM C840 or GA-216.Lateral <br /> bracing is required in accordance with the applicable code. <br /> Floorline Firestopping 4 pcf mineral wool(e.g.,Thermafiber)in each stud cavity at each floorline,attached with Z-clips <br /> Cavity Insulation None <br /> Exterior Sheathing– 1–'/Z-inch-thick,Type X exterior type gypsum sheathing <br /> Use either 1 or 2 2–5/e-inch-thick Type X exterior type gypsum sheathing <br /> Exterior insulation– 1–JM Corbond MCST""SPF a maximum of 3 inches thick <br /> Use either 1 or 2 2–JM cc SPFT"",a maximum of 3 inches thick <br /> 1–Brick-standard nominally 4-inch-thick Gay brick,running bond pattem,Type S mortar <br /> -The brick veneer is attached with Hohmann 8 Bamard X-SeaIT'"anchors,with Ve Bayna ties,using <br /> 5-inch-long zinc-coated,hex head self�lrilling screws spaced 16 inches(505 mm)on center and <br /> secured to steel studs. <br /> -Maximum 1-inch air g�ap between exterior insulation and brick <br /> 2–Stucco-minimum /,-inch-thick,euterior cement plaster and lath.A secondary water-resistive <br /> Exterior Wall covering– barrier may be installed between the exterior insulation and the lath.The secondary water-resistive <br /> Use either 1 or 2,3,4 or 5 barrier must not be full-coverage asphalt or butyl-based self-adhered membranes. <br /> 3–Minimum 2-inch-thick natural stone(granite,limestone,marble,sandstone).Any standard non- <br /> open-jointed installation technique can be used. <br /> 4–Minimum 1'/Z-inch-thick artificial precast stone veneer recognized in an ICC-ES evaluation report <br /> complying with AC51,when installed in accordance with the ICC-ES evaluation report for the precast <br /> stone veneer. <br /> 5–Minimum 1'/4-inch-thick Terra cotta cladding system.Any non-open-jointed technique such as ship <br /> lap may be used, <br /> For SI: 1 inch=25.5 mm; 1 pcf= 16.018 kg/m'. <br />