SECTION (09512) - ACOUSTICAL TILE CEILINGS

Transcription

1 SECTION (09512) - ACOUSTICAL TILE CEILINGS PART 1 GENERAL 1.01 SUMMARY A. Section Includes: 1. Suspended Metal Grid Systems Complete With Wall Trim 2. Suspended Fiberglass Grid Systems Complete With Wall Trim 3. Ceiling Tiles B. Related Sections: 1.02 REFERENCES 1. Divisions 21 (13), 23 (15), and 26 (13) Sections for light fixtures, sprinklers, and airdistribution components. A. ASTM International Publications: 1. E84 "Standard Test Method for Surface Burning Characteristics of Building Materials" 2. C635 Standard Specification for the Manufacture, Performance, and Testing of Metal Suspension Systems for Acoustical Tile and Lay-in Panel Ceilings 3. C636 Standard Practice for Installation of Metal Ceiling Suspension Systems for Acoustical Tile and Lay-In Panels 4. E1264 Standard Classification for Acoustical Ceiling Products B. United States Department of Agriculture Food Safety and Inspection Service (USDA FSIS) Requirements 1.03 SUBMITTALS A. General: Submit the following in accordance with Conditions of Contract and Division 01 Specification Sections. B. Product Data: Submit Letter of Conformance in accordance with Section (01330) indicating specified items selected for use in project with the following supporting data. 1. of exposed wall molding, trim and suspension system (main runner and cross-tee) QUALITY ASSURANCE A. Qualifications of Installers: 1. The suspended ceiling Subcontractor shall have a record of successful installations of similar ceilings acceptable to the Architect. 2. For the actual fabrication and installation of all components of the system, use only personnel who are thoroughly trained and experienced in the skills required and completely familiar with the requirements established for this work. B. In addition to complying with all pertinent codes and regulations, suspension system shall be installed according to ASTM C636, Installation of Metal Ceiling Suspension System for Acoustical Tile and Lay-in Panels. C. Acoustical Tile Standard: Provide manufacturer's standard tiles of configuration indicated that comply with ASTM E1264 classifications as designated by types, patterns, acoustical ratings, and light reflectances, unless otherwise indicated. PAGE 1

2 1.05 DELIVERY, STORAGE, AND HANDLING A. Use all means necessary to protect the materials of this Section before, during, and after installation and to protect work and materials of all other trades PROJECT CONDITIONS A. Do not install acoustical ceilings until building is enclosed, sufficient heat is provided, dustgenerating activities have terminated, and overhead work is completed, tested, and approved REPLACEMENT STOCK A. Refer to Section (01790). PART 2 PRODUCTS 2.01 STRUCTURAL EXPOSED SUSPENSION SYSTEM A. Avendra, LLC Preferred Manufacturers: REVISED: 01/22/16 1. Armstrong World Industries, Inc. ( ) B. Approved Manufacturers: 1. System used shall be as shown in Interior Finish Index or approved substitution by: a. Chicago Metallic Corp. ( ) b. USG Interiors, Inc. ( ) 2. System used shall be double web, direct hung exposed system. a. General: The systems shall be such that the ceiling panels may be removed without damage; that the main runner and cross runners may be removed and replaced without deforming the runners or disturbing the balance of the grid system. 3. Main Runners 1) 7300 Series with 1-1/2" ht., 15/16" face, steel; Armstrong World Industries, Inc. 2) Number DX-24 with 1-1/2" ht., 15/16" face, steel; USG Interiors, Inc. 3) Number 211 with 1-1/2" ht., 15/16" face, steel; Chicago Metallic Corp. b. The main runner shall have a non-directional bayonet coupling. 4. Cross Runners: Designed to support lay-in lighting fixtures and to receive acoustical tile at sides of fixture opening. 1) Number XL-7328/7348 Cross Tee ; Armstrong World Industries, Inc. 2) DX-216/416 Cross Tee ; USG Interiors, Inc. 3) Number 226/209 Cross Tee ; Chicago Metallic Corp. 5. Perimeter Wall Angles: Hemmed edge, 7/8" x 7/8". 6. Accessories: Provide all accessories needed for proper installation of system. 7. Finish: All exposed surfaces shall be finished white. Note: Type 2 Grid shown below is for 9/16 Fineline grid system typical for project. Refer to Interior Finish Index for locations. PAGE 2 FILE: CFRST-Acoustical Tile Ceilings CFRST SPECMSTR-NEW BUILD 2016, Marriott International, Inc.

3 C. Type 2 Grid: 1. Acceptable Products: a. Fineline DXF Grid System ; USG Interiors, Inc. b. Supra-Fine XL 7500 Series Grid System ; Armstrong World Industries, Inc. c. Ultraline 3500 Grid System ; Chicago Metallic Corp.. 2. System used shall be double web, direct hung exposed system, aluminum tee with painted aluminum cap. a. General: The systems shall be such that the ceiling panels may be removed without damage; that the main runner and cross runners may be removed and replaced without deforming the runners or disturbing the balance of the grid system. 3. Main Runners: 1) 7500 Series with 1-1/2" ht., 9/16" face, steel; Armstrong World Industries, Inc. 2) DXF Main Tee with 1-25/32" ht., 9/16" face, steel; USG Interiors, Inc.. 3) 3500 Series with 1-5/8" ht., 9/16" face, steel; Chicago Metallic Corp. b. The main runner shall have a non-directional bayonet coupling. 4. Cross Runners: Designed to support lay-in lighting fixtures and to receive acoustical tile at sides of fixture opening. Provide light fixture accessory as required to support specified light fixtures. 1) Number XL-7520 ; Armstrong World Industries, Inc. 2) DXF Cross Tee ; USG Interiors, Inc. 3) 3512 Series Cross Tee ; Chicago Metallic Corp. Note: All Public Spaces shall use Shadow Molding at perimeters. 5. Perimeter Wall Angles: Hemmed edge, 9/16" x 15/16"and Shadow Molding 6. Accessories: Provide all accessories needed for proper installation of system. 7. Finish: All exposed surfaces shall be finished white, unless scheduled otherwise. Note: Fiberglass Ceiling Grid shown below is for Courtyard Projects ONLY. Refer to Interior Finish Index for Fiberglass Ceiling Grid locations FIBERGLASS CEILING GRID SYSTEM A. Avendra, LLC Preferred Manufacturers: 1. None B. Approved Manufacturers: 1. Sanigrid II Fiberglass Ceiling Grid System (SAN) ; Crane Composites, Inc. ( ) C. Materials: 1. Performance: Provide fiberglass ceiling grid system with the following: PAGE 3

4 a. Meets Class A finish requirements: Flamespread of less than 25, smoke developed less than 450 per ASTM E84 latest version. b. Complies with USDA FSIS requirements. 2. Components: a. Wall Angles: 12 foot length fastened directly to the wall with Kemlite nylon drive rivets or stainless steel screws. b. Hanger Wire: Provided by others, manufacturer's standard; secured with stainless steel anchors. c. Main runners: 12'-0-1/2", notched on 24-¼ inch centers. d. Cross Tee: 48 1/2" and 24 1/2" lengths, pre-notched ends. e. Connector clip: Joins main runners. f. Wall Anchor: Part #C-20 to secure main and cross tees to wall angle. 3. Color: As shown on Interior Finish Index ACOUSTICAL MATERIALS A. Product: Refer to Interior Finish Index LIGHTING: Contractor shall be responsible for providing sufficient support on grid systems to support light fixtures. All fixtures shall be supported at each and every corner. PART 3 EXECUTION 3.01 SURFACE CONDITIONS A. Inspection: Prior to all work of this Section, carefully inspect the installed work of all other trades and verify that all such work is complete to the point where this installation may properly commence. Verify that suspended ceiling systems are installed in strict accordance with all pertinent codes and regulations, and the manufacturer's recommendations. B. Discrepancies: In the event of discrepancy, immediately notify the Owner s Representative. Do not proceed in areas of discrepancy until all such discrepancies have been fully resolved INSTALLATION A. General: 1. Install acoustical panel, suspension system and accessories in compliance with manufacturers instructions and requirements of ASTM C Install ceiling system in a true and even plane with straight line courses laid out symmetrically about center lines of area or as indicated. Border tile shall be minimum 6" wide and neatly fit against vertical surfaces to form a tight fit. 3. Provide metal edge angle at perimeter of units as detailed on Drawings. Cut and fit around light fixtures, diffusers, etc. B. Lay-In Ceiling System: 1. Hanging main tees parallel in a flat plane by means of #10 gauge wire hangers attached to construction above. Hangers shall be spaced not over 4'-0" along the main tees and within 6" of the ends and splices of main tees, and other interruptions. Main tees shall be spaced 2'- 0" o.c. Cross tees shall be interlocked to main tees and spaced as required to support tile edges. REVISED: 01/22/16 PAGE 4 FILE: CFRST-Acoustical Tile Ceilings CFRST SPECMSTR-NEW BUILD 2016, Marriott International, Inc.

5 2. Attachment to ducts, pipes, etc. will not be permitted. Bridge under obstructions with a grid of 1-1/2" cold rolled channels or other suitable members to support ceiling grid. 3. Install wall angle at perimeter of walls, partitions, columns, pipes, and other obstructions that extend above the ceiling. Securely attach with appropriate fastening devices at maximum 16" o.c. Form reveal of same depth and width as that formed between edge of panel and flange at exposed suspension grid. Neatly cut and fit around light fixtures, diffusers, etc. Provide wall angles fabricated to diameter required to fit penetrations. 4. Insert ceiling panels, installing hold down clips on panels extending over partitions and where required to maintain fire ratings. 5. At all locations where ceiling tiles are cut, the cut edges of the tiles shall match the premanufactured edges (i.e. cut edges are to be beveled to match beveled edged tiles). Exposed cut edges are to be painted to match face of tile with paint as approved by tile manufacturer ADJUSTING AND CLEANING A. Completely remove all finger prints and traces of soil and damage from the surfaces of grid and acoustical materials, using only those cleaning materials recommended for that purpose by the manufacturer of the material being cleaned. B. Replace units which are damaged or improperly installed. END OF SECTION PAGE 5