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DocuSign Envelope ID:D561B1AE-DF34-4907-AD06-AOEB37BBE427 <br /> CHAPEL HILL ORANGE COUNTY VISITORS BUREAU August 12,2020 <br /> 308 WEST FRANKLIN,CHAPEL HILL,NC <br /> 3.2 PREPARATION <br /> A. Remove welded-in shipping spreaders installed at factory. Restore exposed finish by grinding, <br /> filling, and dressing, as required to make repaired area smooth, flush, and invisible on exposed <br /> faces. <br /> B. Prior to installation, adjust and securely brace welded hollow metal frames for squareness, <br /> alignment,twist, and plumbness to the following tolerances: <br /> 1. Squareness: Plus or minus 1/16 inch (1.6 mm), measured at door rabbet on a line 90 <br /> degrees from jamb perpendicular to frame head. <br /> 2. Alignment: Plus or minus 1/16 inch (1.6 mm), measured at jambs on a horizontal line <br /> parallel to plane of wall. <br /> 3. Twist: Plus or minus 1/16 inch (1.6 mm), measured at opposite face corners of jambs on <br /> parallel lines, and perpendicular to plane of wall. <br /> 4. Plumbness: Plus or minus 1/16 inch(1.6 mm),measured at jambs on a perpendicular line <br /> from head to floor. <br /> C. Drill and tap doors and frames to receive nontemplated, mortised, and surface-mounted door <br /> hardware. <br /> 3.3 INSTALLATION <br /> A. General: Install hollow metal work plumb, rigid, properly aligned, and securely fastened in <br /> place; comply with Drawings and manufacturer's written instructions. <br /> B. Hollow Metal Frames: Install hollow metal frames of size and profile indicated. Comply with <br /> [ANSI/SDI A250.1I] [HMMA 840]. <br /> 1. Set frames accurately in position, plumbed, aligned, and braced securely until permanent <br /> anchors are set. After wall construction is complete, remove temporary braces, leaving <br /> surfaces smooth and undamaged. <br /> a. At fire-protection-rated openings, install frames according to NFPA 80. <br /> b. Where frames are fabricated in sections because of shipping or handling <br /> limitations, field splice at approved locations by welding face joint continuously; <br /> grind, fill, dress, and make splice smooth, flush, and invisible on exposed faces. <br /> C. Install frames with removable glazing stops located on secure side of opening. <br /> d. Install door silencers in frames before grouting. <br /> e. Remove temporary braces necessary for installation only after frames have been <br /> properly set and secured. <br /> £ Check plumbness, squareness, and twist of frames as walls are constructed. Shim <br /> as necessary to comply with installation tolerances. <br /> g. Field apply bituminous coating to backs of frames that are filled with grout <br /> containing antifreezing agents. <br /> 2. Floor Anchors: Provide floor anchors for each jamb and mullion that extends to floor, <br /> and secure with postinstalled expansion anchors. <br /> HOLLOW METAL DOORS AND FRAMES 081113 - 8 <br />