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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 /> a. Floor anchors may be set with powder-actuated fasteners instead of postinstalled <br /> expansion anchors if so indicated and approved on Shop Drawings. <br /> 3. Metal-Stud Partitions: Solidly pack mineral-fiber insulation behind frames. <br /> 4. Masonry Walls: Coordinate installation of frames to allow for solidly filling space <br /> between frames and masonry with grout. <br /> 5. Concrete Walls: Solidly fill space between frames and concrete with grout. Take <br /> precautions, including bracing frames,to ensure that frames are not deformed or damaged <br /> by grout forces. <br /> 6. In-Place Concrete or Masonry Construction: Secure frames in place with postinstalled <br /> expansion anchors. Countersink anchors, and fill and make smooth, flush, and invisible <br /> on exposed faces. <br /> 7. In-Place Gypsum Board Partitions: Secure frames in place with postinstalled expansion <br /> anchors through floor anchors at each jamb. Countersink anchors, and fill and make <br /> smooth, flush, and invisible on exposed faces. <br /> 8. Ceiling Struts: Extend struts vertically from top of frame at each jamb to overhead <br /> structural supports or substrates above frame unless frame is anchored to masonry or to <br /> other structural support at each jamb. Bend top of struts to provide flush contact for <br /> securing to supporting construction. Provide adjustable wedged or bolted anchorage to <br /> frame jamb members. <br /> 9. Installation Tolerances: Adjust hollow metal door frames for squareness, alignment, <br /> twist, and plumb to the following tolerances: <br /> a. Squareness: Plus or minus 1/16 inch (1.6 mm), measured at door rabbet on a line <br /> 90 degrees from jamb perpendicular to frame head. <br /> b. Alignment: Plus or minus 1/16 inch (1.6 mm), measured at jambs on a horizontal <br /> line parallel to plane of wall. <br /> c. Twist: Plus or minus 1/16 inch (1.6 mm), measured at opposite face corners of <br /> jambs on parallel lines, and perpendicular to plane of wall. <br /> d. Plumbness: Plus or minus 1/16 inch(1.6 mm),measured at jambs at floor. <br /> 3.4 ADJUSTING AND CLEANING <br /> A. Final Adjustments: Check and readjust operating hardware items immediately before final <br /> inspection. Leave work in complete and proper operating condition. Remove and replace <br /> defective work, including hollow metal work that is warped,bowed, or otherwise unacceptable. <br /> B. Remove grout and other bonding material from hollow metal work immediately after <br /> installation. <br /> C. Prime-Coat Touchup: Immediately after erection, sand smooth rusted or damaged areas of <br /> prime coat and apply touchup of compatible air-drying,rust-inhibitive primer. <br /> D. Metallic-Coated Surfaces: Clean abraded areas and repair with galvanizing repair paint <br /> according to manufacturer's written instructions. <br /> END OF SECTION 081113 <br /> HOLLOW METAL DOORS AND FRAMES 081113 - 9 <br />