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DSS Skills Development Center Smith Sinnett / 2020045 <br />Chapel Hill, North Carolina Orange County <br /> <br />HOLLOW METAL DOORS AND FRAMES 08 11 13 - 6 <br />C. Proceed with installation only after unsatisfactory conditions have been corrected. <br />3.2 PREPARATION <br />A. Remove welded-in shipping spreaders installed at factory. Restore exposed finish by grinding, filling, <br />and dressing, as required to make repaired area smooth, flush, and invisible on exposed faces. <br />B. Prior to installation, adjust and securely brace welded hollow metal frames for squareness, alignment, <br />twist, and plumbness to the following tolerances: <br />1. Squareness: Plus or minus 1/16 inch, measured at door rabbet on a line 90 degrees from jamb <br />perpendicular to frame head. <br />2. Alignment: Plus or minus 1/16 inch, measured at jambs on a horizontal line parallel to plane of <br />wall. <br />3. Twist: Plus or minus 1/16 inch, measured at opposite face corners of jambs on parallel lines, and <br />perpendicular to plane of wall. <br />4. Plumbness: Plus or minus 1/16 inch, measured at jambs on a perpendicular line from head to <br />floor. <br />C. Drill and tap doors and frames to receive non-templated, mortised, and surface-mounted door hardware. <br />3.3 INSTALLATION <br />A. General: Install hollow metal work plumb, rigid, properly aligned, and securely fastened in place; <br />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 A250.11. <br />1. Set frames accurately in position, plumbed, aligned, and braced securely until permanent anchors <br />are set. After wall construction is complete, remove temporary braces, leaving surfaces smooth <br />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 limitations, field <br />splice at approved locations by welding face joint continuously; grind, fill, dress, and make <br />splice smooth, flush, and invisible on exposed faces. <br />c. Install frames with removable glazing stops located on secure side of opening. <br />d. Remove temporary braces necessary for installation only after frames have been properly <br />set and secured. <br />e. Check plumbness, squareness, and twist of frames as walls are constructed. Shim as <br />necessary to comply with installation tolerances. <br />2. Floor Anchors: Provide floor anchors for each jamb and mullion that extends to floor, and secure <br />with postinstalled expansion anchors. <br />a. Floor anchors may be set with powder-actuated fasteners instead of postinstalled expansion <br />anchors if so indicated and approved on Shop Drawings. <br />3. Metal-Stud Partitions: Solidly pack mineral-fiber insulation behind frames. <br />4. Concrete Walls: Solidly fill space between frames and concrete with grout. Take precautions, <br />including bracing frames, to ensure that frames are not deformed or damaged by grout forces. <br />DocuSign Envelope ID: ECCAC5A0-6CC8-4B37-8AD3-89D69F0AE1AE