An aluminum mullion section frames the glazing, which is specified per elevations and specs with a 3 1/2-inch dimension to the frame edge. The storefront system meets a concrete tilt-up panel, with a sealant over backer rod joint provided between the two assemblies typical. A 3/8-inch clearance gap is maintained between the storefront frame and the beveled edge of the concrete panel. Concrete tilt-up panel details are coordinated with the structural drawings. Notes reference 2022 CBC Section 2406 for minimum frame lap over glass edge, minimum glass clearance, and required glass supports, with locations referenced on exterior elevations and floor plans.
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