VA 09 54 23-2011 LINEAR METAL CEILINGS.pdf

1、10-11 09 54 23 - 1 SECTION 09 54 23 LINEAR METAL CEILINGS SPEC WRITER NOTE: 1. Delete between /-/if not applicable to project. Also delete any other item or paragraph not applicable in section and renumber paragraphs. 2. Coordinate with Section 09 06 00, SCHEDULE FOR FINISHESS, to define texture, pa

2、tterns, and colors other than white with locations in room finish schedule and reflective ceiling plans. 3. Insure reflective ceiling plans show panel sizes, layouts including light fixtures, fire protection sprinkler heads, HVAC air supply and return diffusers and grilles, and ceiling areas with un

3、usual conditions. PART 1 - GENERAL 1.1 DESCRIPTION A. Section Includes: 1. Suspended metal grid ceiling system including trim. 2. Decorative, linear, formed metal ceiling panels, mechanically mounted on a ceiling suspension system. 3. Accessories: a. Closures, trim, edge molding and all other items

4、required to provide complete installation. B. Unit size, texture, finish, and color as specified. C. Location and extent of acoustical treatment as shown. 1.2 RELATED WORK A. Batt, Blanket and Sound Isolation Insulation: Section 07 21 13, THERMAL INSULATION. B. Access Doors: Section 08 31 13, ACCESS

5、 DOORS AND FRAMES. C. Finish Color: Section 09 06 00, SCHEDULE FOR FINISHES. D. Acoustical Ceilings: Section 09 51 00, ACOUSTICAL CEILINGS. E. Sprinkler System: Section 21 10 00, WATER-BASED FIRE-SUPPRESSION SYSTEMS. F. Air Outlets and Inlets: Division 22, PLUMBING. G. Interior Lighting: Section 26

6、51 00, INTERIOR LIGHTING. 1.3 QUALITY CONTROL A. Qualifications: 1. Approval required of products or service of proposed manufacturer, suppliers and installers, and shall be based upon submission by Contractor of certification that: Provided by IHSNot for ResaleNo reproduction or networking permitte

7、d without license from IHS-,-,-10-11 09 54 23 - 2 a. Manufacturer regularly and presently, manufactures and installs linear metal ceiling systems and related accessories as one of its principal products and has a record of successful in-service performance. b. Accessories required for linear metal c

8、eiling systems shall be manufacturers standard or other systems compatible with linear metal ceiling system manufacturers material. Items shall be of materials and construction which shall provide desired functional service. 2. Installer: Approved in writing by manufacturer. B. Coordination of Work:

9、 Coordinate layout and installation of linear metal ceiling units and suspension system components with other work supported by, or penetrating through, ceilings, including light fixtures, HVAC equipment, fire-suppression system components (if any), and partition system (if any): 1. Sprinkler heads

10、and light fixtures: Shall typically penetrate center of a panel width. 2. HVAC Air Outlets and Inlets: Shall be planned to occur within center of panel systems or provide for equal distance on each side parallel to length of panels SPEC WRITER NOTE: Include article below if seismic design for ceilin

11、g system is required. C. Seismic Design: 1. Design suspension system for seismic considerations under direct supervision of Professional Structural Engineer experienced in design of this work and licensed / at place where project is located/ /in state of / /. 1.4 SUBMITTALS A. Submit in accordance w

12、ith Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES. B. Manufacturers Literature and Product Data: 1. Manufacturers standard details and fabrication methods. 2. Data on finishing, hardware, components, and accessories. 3. Recommendations for maintenance and cleaning of finish surfaces. C.

13、 Shop Drawings: 1. Submit complete composite fabrication, and installation shop drawings including associated components. 2. Identify panel sections, baffles, edge trim, lighting trim, air diffuser sections and trim, sprinkler head locations and trim, other component parts, not included in manufactu

14、rers product data, by name Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-10-11 09 54 23 - 3 and material and showing design, construction, installation, and anchorage. 3. Layout and installation details, including relation to adjacent work such as

15、walls and bulkheads. 4. Composite reflected ceiling plans, at 1:50 (1/4 inch) scale, showing location of all accessories, mechanical and electrical components. Indicate following: a. Joint pattern. b. Ceiling suspension members. c. Method of attaching hangers to building structure. d. Ceiling-mounte

16、d items including light fixtures, air outlets and inlets, speakers, sprinkler heads, and access panels. Special moldings at walls, column penetrations, and other junctures with adjoining construction. 5. Detail sections of typical composite members, at wall surfaces, mechanical diffusers and grilles

17、, sprinkler heads, and light fixtures. 6. Provisions for expansion and contraction. 7. Anchors and reinforcements. D. Samples: 1. Submit pairs of samples of each specified color and finish on 300 mm (12 inch) long sections of extrusions or formed shapes for following: a. Linear metal panel. b. Each

18、exposed molding and trim sections. c. Suspension system members. d. Filler strips. e. Insulation. f. End cap. 2. Where normal color variations are anticipated, include 2 units in set indicating extreme limits of color variations. 3. Integrally Colored Anodized or Prefinished Aluminum: a. Sheet not l

19、ess than 200 mm by 250 mm (eight inches by ten inches). E. Certificates: 1. Stating that linear metal ceiling system material has been given specified thickness of anodizing or organic coating finish. 2. Indicating manufacturers and installers meet qualifications as specified. 3. Submit list of equi

20、valent size installations which have had satisfactory operation. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-10-11 09 54 23 - 4 1.5 DELIVERY, STORAGE AND HANDLING A. Materials: Deliver to site in manufacturers original unopened containers with br

21、and name and type clearly marked. B. Materials: Carefully handle and store in dry, watertight enclosures. C. Immediately before installation, linear metal ceiling units shall be stored for not less than 48 hours at same temperature and relative humidity as space where they will be installed to assur

22、e temperature and moisture conditions in accordance with manufacturers recommendations. 1.6 APPLICABLE PUBLICATIONS A. Publications listed below form a part of this specification to extent referenced. Publications are referred to in text by basic designation only. B. American Architectural Manufactu

23、rers Association (AAMA): 2605-11 High Performance Organic Coatings on Architectural Extrusions and Panels. C. American Society for Testing and Materials (ASTM): A641/641M-09 . Zinc-coated (Galvanized) Carbon Steel Wire. A653/A653M-10 Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (G

24、alvannealed) by Hot-Dip Process. B209/B209M-07 Aluminum and Aluminum-Alloy Sheet and Plate. C635-07 Manufacture, Performance, and Testing of Metal Suspension Systems for Acoustical Tile and Lay-In Panel Ceilings. C636-08 Installation of Metal Ceiling Suspension Systems for Acoustical Tile and Lay-In

25、 Panels. E90-09 . Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions. E580-10 Application of Ceiling Suspension Systems for Acoustical Tile and Lay-in Panels in Areas Requiring Seismic Restraint. D. National Association of Architectural Metal Manufacturers (NAAMM): Met

26、al Finishes Manual (2006) 1.7 ENVIRONMENTAL REQUIREMENTS Uniform temperature of not less than 16 C, (60 F) nor more than 27 C, (80 F) and a relative humidity of not more than 70 percent shall be maintained for a period of 48 hours before, during, and for 48 hours after installation of linear metal c

27、eiling units. After above period, room temperature shall not fall below 13 C (55 F). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-10-11 09 54 23 - 5 1.8 SCHEDULING Interior finish work such as plastering, gypsum board finishing, painting, concrete

28、 and terrazzo work shall be complete and dry before installation. Mechanical, electrical, and other work above ceiling line shall be completed and heating, ventilating, and air conditioning systems shall be installed and operating in order to maintain temperature and humidity requirements. 1.9 WARRA

29、NTY Submit written warranty, in accordance with FAR clause 52.246-21, Warranty of Construction requirements except that warranty period shall be extended to two (2) years. PART 2 - PRODUCTS 2.1 MATERIALS A. Linear Metal Ceiling System, General: 1. Sheet Metal Characteristics: Form metal panels from

30、sheet metal free from surface blemishes where exposed to view in finished unit. Do not use materials whose exposed surfaces exhibit pitting, seam marks, roller marks, stains, discolorations, or other imperfections. 2. Fabrication: Die-form linear metal panels into units standard with manufacturer an

31、d finished as specified herein. SPEC WRITER NOTE: Coordinate acoustical insulation sound absorptive pad material type, thickness, facing and width of units required for use herein with Section 07 21 13, THERMAL INSULATION. Coordinate availability of pad material and thickness with manufacturer at ea

32、ch time of editing this Section. 3. Sound-Absorptive Pads: Width and length to fill completely between carriers, joined at center of a panel, and to provide an STC rating of / / in accordance with ASTM E90. Refer to Section 07 21 13, THERMAL INSULATION for acoustical insulation sound absorptive pad

33、type and thickness to be used based on STC ratings. B. Accessories: /Stabilizer bars, / /clips, / /splices,/ /hold down clips, / /and/ / / as required for suspended grid system. C. Linear Metal Panels: 1. General: Formed to snap on and be securely retained on carriers without separate fasteners. SPE

34、C. WRITER NOTE: Select type(s) and thickness required from below. 2. Aluminum Panels: ASTM B209/B209m, roll-formed sheet, alloy 3005-H26, complying with following requirements: Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-10-11 09 54 23 - 6 a. Min

35、imum Nominal Thickness: /0.40 mm (0.020 inch)/ /0.75 mm (0.027 inch)/ /1.0 mm (0.040 inch)/. 3. Panel Performance: As follows: a. Light Reflectance Coefficient: LR /0.75/ /0.70/ / /. b. Noise Reduction Coefficient: NRC /0.75/ /0.85/ / /. D. Suspension Systems, General: 1. Standard for Metal Suspensi

36、on Systems: Provide manufacturers standard types, structural classifications, and finishes indicated that comply with ASTM C635 requirements. 2. Anchors: Type as recommended by manufacturer. Size for five times design load indicated in ASTM C635, Table 1, Direct Hung, unless otherwise indicated. E.

37、Wire for Carriers, Hangers, and Ties: ASTM A641/A641m, Class 1, zinc coating, soft temper. 1. Gage: Minimum 12 gage. Shall support a minimum of 1330 N, (300 pounds ultimate vertical load without failure of supporting material or attachment. F. Hanger Rods: Mild steel, zinc coated, or protected with

38、rust-inhibitive paint. G. Flat Hangers: Mild steel, zinc coated, or protected with rust-inhibitive paint. H. Angle Hangers: Angles with legs not less than 22 mm (7/8 inch) wide, formed with 0.82 mm (0.0365 inch) galvanized steel sheet complying with ASTM A653/A653m, Coating Designation G90, with bol

39、ted connections and 7.6 mm (5/16 inch) diameter bolts. I. Edge Moldings and Trim: Manufacturers standard molding for edges and penetrations of ceiling. J. Carriers: Comply with ASTM A653/A653m, cold-rolled, electro-galvanized, 0.375 mm (0.0209 inch) (25 gage) minimum nominal thickness steel. K. Misc

40、ellaneous Components and Materials: 1. Access Doors: Refer to Section 08 31 13, ACCESS DOORS AND FRAMES for requirements. Access doors, required for use in linear metal ceiling system, shall match adjacent ceiling panel units and shall be designed and equipped with suitable framing and fastenings fo

41、r removal and replacement without damage. Provide locking device for this type access door as used in general access doors. L. Access Identification: Refer to Section 09 91 00, PAINTING for requirements of identification markers for use, with various mechanical systems above ceiling, under this sect

42、ion. 2.2 FINISHES A. Comply with NAAMM “Metal Finishes Manual”. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-10-11 09 54 23 - 7 B. Protect mechanical finishes on exposed surfaces from damage by application of strippable, temporary protective cover

43、ing before shipment. C. Appearance of Finished Work: Variations in appearance of abutting or adjacent ceiling units not acceptable. Noticeable variations in same piece not acceptable. D. Aluminum Finishes: 1. Lacquered Mill Finish: AA-M10C10R1X. a. Organic Coating: Manufacturers standard, clear, org

44、anic coating. 2. Class II, Clear, Satin-Anodized Finish: AA-M32C12A212. Anodic Coating: protective and decorative, clear film; coating thickness: .0052 mm (0.2 mil minimum). 3. Class II, Clear, Mirror-Anodized Finish: AA-M21C12A212. Anodic Coating: protective and decorative, clear film; coating thic

45、kness: .0052 mm (0.2 mil minimum). 4. High-Performance, Organic Coating: Comply with AAMA 605. 5. Color and Gloss: Refer to Section 09 06 00, SCHEDULE FOR FINISHES. SPEC. WRITER NOTE: Touch-up paint may be required when field cutting and exposing cut edges or ends of galvanized members. E. Touch-up

46、Paint For Concealed Items: / Zinc rich /, / Zinc oxide /, / / type. PART 3 - EXECUTION 3.1 INSPECTION A. Ceiling Areas: Conform with details, dimensions and tolerances shown on approved linear metal ceiling system composite reflected ceiling plan shop drawings. B. Conditions which may adversely affe

47、ct linear metal ceiling system installation shall be brought to Contractors attention, for repair, prior to commencement of linear metal ceiling system installation. Do not start ceiling installation until affected area has been repaired to Installers satisfaction. C. Where linear metal ceiling syst

48、em is installed adjacent to masonry, washdown of adjacent masonry shall be completed prior to erection of ceiling system to prevent damage to material finish by cleaning materials. 3.2 PREPARATION Measure each ceiling area and establish layout of linear metal panel units to balance border widths at

49、opposite edges of each ceiling. Avoid using units less than half wide at borders. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-10-11 09 54 23 - 8 3.3 INSTALLATION SPEC. WRITER NOTE: Retain reference to ASTM E580 where seismic restraint is required. A. Standard for