Attachment 1: Specifications - Metropolitan Washington Airports ...

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DCA TERMINAL A IMPROVEMENTS (NEAR TERM) 10 AUGUST 2012 TASK ORDER 03: LOBBY IMPROVEMENTS – PKG 4 - CURBSIDE CHECK-IN RONALD REAGAN WASHINGTON NATIONAL AIRPORT PROJECT DT1203 a. Stud-Wall Type: Locate anchors not more than 18 inches from top and bottom of frame. Space anchors not more than 32 inches o.c. and as follows: 1) Four anchors per jamb from 60 to 90 inches high. 2) Two anchors per head for frames greater than 42 inches wide and mounted in metal-stud partitions. 5. Door Silencers: Except on weather-stripped doors, drill stops to receive door silencers as follows. Keep holes clear during construction. a. Single-Door Frames: Drill stop in strike jamb to receive three door silencers. E. Fabricate concealed stiffeners, edge channels, and hardware reinforcement from cold-rolled steel sheet. F. Hardware Preparation: Factory prepare hollow metal work to receive templated mortised hardware; include cutouts, reinforcement, mortising, drilling, and tapping according to the Door Hardware Schedule and templates furnished as specified in Division 08 Section "Door Hardware." 1. Locate hardware as indicated, or if not indicated, according to ANSI/SDI A250.8. 2. Reinforce doors and frames to receive nontemplated, mortised and surface-mounted door hardware. 3. Comply with applicable requirements in ANSI/SDI A250.6 and ANSI/DHI A115 Series specifications for preparation of hollow metal work for hardware. 4. Coordinate locations of conduit and wiring boxes for electrical connections with Division 26 and 28 Sections. 2.9 STEEL FINISHES A. Prime Finish: Apply manufacturer's standard primer immediately after cleaning and pretreating. 1. Shop Primer: Manufacturer's standard, fast-curing, lead- and chromate-free primer complying with ANSI/SDI A250.10 acceptance criteria; recommended by primer manufacturer for substrate; compatible with substrate and field-applied coatings despite prolonged exposure. PART 3 - EXECUTION 3.1 EXAMINATION A. Examine substrates, areas, and conditions, with Installer present, for compliance with requirements for installation tolerances and other conditions affecting performance of the Work. B. Examine roughing-in for embedded and built-in anchors to verify actual locations before frame installation. HOLLOW METAL DOORS AND FRAMES 08 11 13 - 6
DCA TERMINAL A IMPROVEMENTS (NEAR TERM) 10 AUGUST 2012 TASK ORDER 03: LOBBY IMPROVEMENTS – PKG 4 - CURBSIDE CHECK-IN RONALD REAGAN WASHINGTON NATIONAL AIRPORT PROJECT DT1203 C. For the record, prepare written report, endorsed by Installer, listing conditions detrimental to performance of the Work. D. Proceed with installation only after unsatisfactory conditions have been corrected. 3.2 PREPARATION A. Remove welded-in shipping spreaders installed at factory. Restore exposed finish by grinding, filling, and dressing, as required to make repaired area smooth, flush, and invisible on exposed faces. B. Prior to installation, adjust and securely brace welded hollow metal frames for squareness, alignment, twist, and plumbness to the following tolerances: 1. Squareness: Plus or minus 1/16 inch, measured at door rabbet on a line 90 degrees from jamb perpendicular to frame head. 2. Alignment: Plus or minus 1/16 inch, measured at jambs on a horizontal line parallel to plane of wall. 3. Twist: Plus or minus 1/16 inch, measured at opposite face corners of jambs on parallel lines, and perpendicular to plane of wall. 4. Plumbness: Plus or minus 1/16 inch, measured at jambs on a perpendicular line from head to floor. C. Drill and tap doors and frames to receive nontemplated, mortised, and surface-mounted door hardware. 3.3 INSTALLATION A. General: Install hollow metal work plumb, rigid, properly aligned, and securely fastened in place; comply with Drawings and manufacturer's written instructions. B. Hollow Metal Frames: Install hollow metal frames of size and profile indicated. Comply with ANSI/SDI A250.11. 1. Set frames accurately in position, plumbed, aligned, and braced securely until permanent anchors are set. After wall construction is complete, remove temporary braces, leaving surfaces smooth and undamaged. a. At fire-protection-rated openings, install frames according to NFPA 80. b. Where frames are fabricated in sections because of shipping or handling limitations, field splice at approved locations by welding face joint continuously; grind, fill, dress, and make splice smooth, flush, and invisible on exposed faces. c. Install door silencers in frames before grouting. d. Remove temporary braces necessary for installation only after frames have been properly set and secured. e. Check plumbness, squareness, and twist of frames as walls are constructed. Shim as necessary to comply with installation tolerances. HOLLOW METAL DOORS AND FRAMES 08 11 13 - 7
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Attachment 1: Specifications - Metropolitan Washington Airports ...

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