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 F. Room-Side Finish: Gypsum board. G. Shaft-Side Finish: Gypsum shaftliner board, moisture- and mold-resistant Type X. H. Insulation: Sound attenuation blankets. 2.3 PANEL PRODUCTS A. Panel Size: Provide in maximum lengths and widths available that will minimize joints in each area and that correspond with support system indicated. B. Gypsum Shaftliner Board, Moisture- and Mold-Resistant Type X: ASTM C 1396/C 1396M; manufacturer's proprietary fire-resistive liner panels with moisture- and mold-resistant core and surfaces. 1. Products: Subject to compliance with requirements, or as acceptable to the Authority, provide product indicated on Drawings or comparable product. Products may be provided by, but are not limited to, one of the following: a. CertainTeed Corp.; ProRoc Moisture and Mold Resistant Shaftliner. b. Georgia-Pacific Gypsum LLC, Subsidiary of Georgia Pacific; Dens-Glass Ultra Shaftliner. c. Lafarge North America, Inc.; Firecheck Moldcheck Type X Shaftliner. d. National Gypsum Company; Gold Bond Brand Fire-Shield Shaftliner XP. e. PABCO Gypsum; Pabcore Mold Curb Shaftliner Type X. f. Temple-Inland Inc.; Fire-Rated SilentGuard TS Mold-Resistant Gypsum Shaftliner System. g. USG Corporation; Sheetrock Brand Mold Tough Gypsum Liner Panel. 2. Thickness: 1 inch. 3. Long Edges: Double bevel. 4. Mold Resistance: ASTM D 3273, score of 10 as rated according to ASTM D 3274. 2.4 NON-LOAD-BEARING STEEL FRAMING A. Steel Framing Members: Comply with ASTM C 645 requirements for metal. B. Firestop Tracks: Top runner manufactured to allow partition heads to expand and contract with movement of the structure while maintaining continuity of fire-resistance-rated assembly indicated. 1. Products: Subject to compliance with requirements, or as acceptable to the Authority, provide product indicated on Drawings or comparable product. Products may be provided by, but are not limited to, one of the following: a. Fire Trak Corp.; Fire Trak System attached to studs with Fire Trak Posi Klip. b. Grace Construction Products; FlameSafe FlowTrak System. GYPSUM BOARD SHAFT WALL ASSEMBLIES 09 21 16.23 - 2
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. Metal-Lite, Inc.; The System. d. Steel Network Inc. (The); VertiTrack VTD Series. 2.5 AUXILIARY MATERIALS A. Trim Accessories: Material and shapes that comply with gypsum board shaft wall assembly manufacturer's written recommendations for application indicated. B. Steel Drill Screws: ASTM C 1002 unless otherwise indicated. C. Track Fasteners: Power-driven fasteners of size and material required to withstand loading conditions. D. Sound Attenuation Blankets: As specified in Section 092900 "Gypsum Board." E. Acoustical Sealant: As specified in Section 092900 "Gypsum Board." PART 3 - EXECUTION 3.1 INSTALLATION A. General: Comply with requirements of fire-resistance-rated assemblies indicated, manufacturer's written installation instructions, and ASTM C 754 other than stud-spacing requirements. B. Examine panels before installation. Reject panels that are wet, moisture damaged, or mold damaged. C. Sprayed Fire-Resistive Materials: Patch or replace sprayed fire-resistive materials removed or damaged during installation of shaft wall assemblies. After application, remove only to extent necessary for installation of gypsum board shaft wall assemblies. D. Building Expansion Joints: Frame both sides of expansion joints with furring and other support. E. Install supplementary framing around openings and as required for blocking, bracing, and support of gravity and pullout loads of fixtures, equipment, handrails, and similar items. F. Penetrations: Install supplementary steel framing around perimeter of penetration behind boxes containing wiring devices, elevator call buttons, elevator floor indicators, and similar items. G. Isolate perimeter of gypsum panels from building structure, while maintaining continuity of fire-rated construction. H. Firestop Tracks: Install to maintain continuity of fire-resistance-rated assembly indicated. GYPSUM BOARD SHAFT WALL ASSEMBLIES 09 21 16.23 - 3
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