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CHAPEL HILL ORANGE COUNTY VISITORS BUREAU August 12, 2020 <br />308 WEST FRANKLIN, CHAPEL HILL, NC <br /> <br />HOLLOW METAL DOORS AND FRAMES 081113 - 4 <br />B. Frame Anchors: ASTM A 591/A 591M, Commercial Steel (CS), 40Z (12G) coating <br />designation; mill phosphatized. <br />1. For anchors built into exterior walls, steel sheet complying with ASTM A 1008/A 1008M <br />or ASTM A 1011/A 1011M, hot-dip galvanized according to ASTM A 153/A 153M, <br />Class B. <br />C. Inserts, Bolts, and Fasteners: Hot-dip galvanized according to ASTM A 153/A 153M. <br />D. Powder-Actuated Fasteners in Concrete: Fastener system of type suitable for application <br />indicated, fabricated from corrosion-resistant materials, with clips or other accessory devices for <br />attaching hollow metal frames of type indicated. <br />E. Grout: ASTM C 476, except with a maximum slump of 4 inches (102 mm), as measured <br />according to ASTM C 143/C 143M. <br />F. Mineral-Fiber Insulation: ASTM C 665, Type I (blankets without membrane facing); consisting <br />of fibers manufactured from slag or rock wool with 6- to 12-lb/cu. ft. (96- to 192-kg/cu. m) <br />density; with maximum flame-spread and smoke-development indexes of 25 and 50, <br />respectively; passing ASTM E 136 for combustion characteristics. <br />G. Glazing: Comply with requirements in Division 08 Section "Glazing." <br />H. Bituminous Coating: Cold-applied asphalt mastic, SSPC-Paint 12, compounded for 15-mil <br />(0.4-mm) dry film thickness per coat. Provide inert-type noncorrosive compound free of <br />asbestos fibers, sulfur components, and other deleterious impurities. <br />2.3 STANDARD HOLLOW METAL FRAMES <br />A. General: Comply with ANSI/SDI A250.8 and with details indicated for type and profile. <br />B. Exterior Frames: Fabricated from metallic-coated steel sheet. <br />1. Fabricate frames with mitered or coped corners. <br />2. Fabricate frames as full profile welded unless otherwise indicated. <br />3. Frames for Level 2 Steel Doors: 0.053-inch- (1.3-mm-) thick steel sheet. <br />4. Frames for Level 3 Steel Doors: 0.053-inch- (1.3-mm-) thick steel sheet. <br />C. Interior Frames: Fabricated from cold-rolled steel sheet unless metallic-coated sheet is <br />indicated. <br />1. Fabricate frames with mitered or coped corners. <br />2. Fabricate frames as knocked down in parking deck levels; full profile welded at all other <br />areas. <br />3. Fabricate knocked-down, drywall slip-on frames for in-place gypsum board partitions.. <br />4. Frames for Level 2 Steel Doors: 0.053-inch- (1.3-mm-) thick steel sheet. <br />5. Frames for Level 3 Steel Doors: 0.053-inch- (1.3-mm-) thick steel sheet. <br />6. Frames for Wood Doors: [0.042-inch- (1.0-mm-)] [0.053-inch- (1.3-mm-)] [0.067-inch- <br />(1.7-mm-)] thick steel sheet. <br />DocuSign Envelope ID: 775B89AF-3514-4D9E-B148-2FDE4EFF16C2