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Gateway Park Center PERKINS+WILL <br /> 810495.000 <br /> 12/06/18 <br /> <br /> <br />STRUCTURAL-SEALANT-GLAZED CURTAIN WALLS <br /> 08 44 23 - 4 <br /> <br /> <br />PART 2 - PRODUCTS <br />2.1 PERFORMANCE REQUIREMENTS <br />A. Delegated Design: Engage a qualified professional engineer, as defined in <br />Section 01 40 00 "Quality Requirements," to design aluminum-framed entrances <br />and storefronts. <br />1. For structural-sealant-glazed curtain walls indicated to comply with <br />performance requirements and design criteria, including analysis data signed <br />and sealed by the qualified professional engineer responsible for their <br />preparation. <br />2. Coordinate submission or include glazing fabricator’s calculations for wind <br />pressure analysis, thermal stress analysis, and structural sealant bond widths <br />to mullion and insulating glass secondary seal included in the ACW/AWW. <br />B. General Performance: Comply with performance requirements specified, as <br />determined by testing of structural-sealant-glazed curtain walls representing those <br />indicated for this Project without failure due to defective manufacture, fabrication, <br />installation, or other defects in construction. <br />1. Structural-sealant-glazed curtain walls shall withstand movements of <br />supporting structure including, but not limited to, story drift, twist, column <br />shortening, long-term creep, and deflection from uniformly distributed and <br />concentrated live loads. <br />2. Failure also includes the following: <br />a. Thermal stresses transferring to building structure. <br />b. Glass breakage. <br />c. Noise or vibration created by wind and thermal and structural <br />movements. <br />d. Loosening or weakening of fasteners, attachments, and other <br />components. <br />e. Failure of operating units. <br />C. Structural Loads: <br />1. Wind Loads: As indicated on Drawings. <br />2. Other Design Loads: As indicated on Drawings. <br />D. Deflection of Framing Members: At design wind pressure, as follows: <br />1. Deflection Normal to Wall Plane: <br />a. Vertical Members: Limited to L/175 of clear span between structural <br />supports for spans up to 13 feet 6 inches and to L/240 of clear span <br />plus 1/4 inch for spans greater than 13 feet 6 inches or an amount that <br />restricts edge deflection of individual glazing lites to 3/4 inch, whichever <br />is less. <br />b. Transverse Members: Limited to L/175 of clear span.