VA 09 51 00-2010 ACOUSTICAL CEILINGS.pdf

1、10-10 09 51 00 - 1 SECTION 09 51 00 ACOUSTICAL CEILINGS SPEC WRITER NOTE: 1. Delete between /_/ if not applicable to project. Also delete any other item or paragraph not applicable in the section and renumber the paragraphs. 2. Coordinate with Section 09 06 00, SCHEDULE FOR FINISHESS, to define text

2、ure, patterns, and colors other than white with locations in the room finish schedule and reflective ceiling plans. 3. Fire rated assemblies: Do not use except with special authorization. Limit use to existing structures where other means to achieve desired fire rating are not practical. This sectio

3、n does not include fire rated assemblies, include applicable UL systems and specify when permitted. 4. Section does not include acoustical plaster, spray or trowel applications and special panels or tile units such as “Structural cement-fiber Units“ See UL listings; Units have flame spread of 20 and

4、 smoke developed of 0. 5. Do not use glass fiber units for lay-in ceiling applications. 6. Insure the reflective ceiling plans show panel sizes and layouts with unusual conditions and tile ceilings. PART 1- GENERAL 1.1 DESCRIPTION A. Metal ceiling suspension system for acoustical ceilings. B. Acoust

5、ical units. C. Adhesive application. 1.2 RELATED WORK A. Color, pattern, and location of each type of acoustical unit: Section 09 06 00, SCHEDULE FOR FINISHES. /B. Linear Metal Ceilings: Section 09 54 23, LINEAR METAL CEILINGS./ /C. Access doors in adhesive applied tile: Section 08 31 13, ACCESS DOO

6、RS AND FRAMES./ 1.3 SUBMITTAL A. Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-10-10 09 51 00 - 2 B. Samples: 1. Acoustical units, each type, with label indicatin

7、g conformance to specification requirements, / including units specified to match existing. / 2. Colored markers for units providing access. C. Manufacturers Literature and Data: 1. Ceiling suspension system, each type, showing complete details of installation /, including suspension system specifie

8、d to match existing and upward access system details for concealed grid systems. / 2. Acoustical units, each type /3. Runners designed for snap-in attachment of metal pans./ D. Manufacturers Certificates: Acoustical units, each type, in accordance with specification requirements. 1.4 DEFINITIONS A.

9、Standard definitions as defined in ASTM C634. B. Terminology as defined in ASTM E1264. SPEC WRITER NOTE: Make material requirements agree with applicable requirements specified in the referenced Applicable Publications. Update and specify only that which applies to the project. 1.5 APPLICABLE PUBLIC

10、ATIONS A. Publications listed below form a part of this specification to extent referenced. Publications are referenced in the text by basic designation only. B. American Society for Testing and Materials (ASTM): A641/A641M-03.Zinc-coated (Galvanized) Carbon Steel Wire A653/A653M-07.Steel Sheet, Zin

11、c-Coated (Galvanized) or Zinc-Iron Alloy-coated (Galvannealed) by the Hot-Dip Process C423-07.Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method C634-02 (E2007).Standard Terminology Relating to Environmental Acoustics C635-04.Metal Suspension Systems for Acoustical T

12、ile and Lay-in Panel Ceilings C636-06.Installation of Metal Ceiling Suspension Systems for Acoustical Tile and Lay-in Panels Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-10-10 09 51 00 - 3 E84-07Surface Burning Characteristics of Building Material

13、s E119-07.Fire Tests of Building Construction and Materials E413-04.Classification for Rating Sound Insulation. E580-06.Application of Ceiling Suspension Systems for Acoustical Tile and Lay-in Panels in Areas Requiring Seismic Restraint E1264-(R2005).Classification for Acoustical Ceiling Products PA

14、RT 2- PRODUCTS SPEC WRITER NOTE: 1. Make material requirements agree with applicable requirements specified in the referenced Applicable Publications. 2. Exposed grid for 600 mm X 1200 mm (2 by 4 feet) lay-in panels is preferred system for economy. 3. Do not use narrow exposed grid face suspension s

15、ystem for lay-in mineral base acoustical units. Minimum width is 22 mm (7/8) inch with 8 mm (5/16 inch) minimum bearing area for panel edge. No exceptions. 2.1 METAL SUSPENSION SYSTEM A. ASTM C635, heavy-duty system, except as otherwise specified. 1. Ceiling suspension system members may be fabricat

16、ed from either of the following unless specified otherwise. a. Galvanized cold-rolled steel, bonderized. b. Extruded aluminum. c. Fire resistant plastic (glass fiber) having a flame spread and smoke developed rating of not more than 25 when tested in accordance with ASTM E84. 2. Use same constructio

17、n for cross runners as main runners. Use of lighter-duty sections for cross runners is not acceptable. 3. Use aluminum suspension in kitchens and aluminum or fire resistant plastic in toilets adjacent to shower areas, hydrotherapy, and swimming pools. B. Exposed grid suspension system for support of

18、 lay-in panels: 1. Exposed grid width not less than 22 mm (7/8 inch) with not less than 8 mm (5/16 inch) panel bearing surface. 2. Fabricate wall molding and other special molding from the same material with same exposed width and finish as the exposed grid members. Provided by IHSNot for ResaleNo r

19、eproduction or networking permitted without license from IHS-,-,-10-10 09 51 00 - 4 3. On exposed metal surfaces apply baked-on enamel flat texture finish in color to match adjacent acoustical units unless specified otherwise in Section 09 06 00, SCHEDULE FOR FINISHES. C. Concealed grid suspension s

20、ystem for support of mineral base acoustical tile: 1. Concealed grid upward access suspension system to provide an initial opening of 300 mm by 600 mm (12 by 24 inches) and for removal of adjacent runners and tile without the use of special tools, and without damage to suspension system and acoustic

21、al tile. 2. Minimum flange width of 22 mm (7/8 inch) except for access hook and angle. 3. Minimum flange width of 11 mm (7/16 inch) for access hook and angle. D. Suspension system for support of Metal Type V, VI, and VII tiles: Concealed grid type having runners designed for the snap-in attachment o

22、f metal tile (pans). 2.2 PERIMETER SEAL A. Vinyl, polyethylene or polyurethane open cell sponge material having density of 1.3 plus or minus 10 percent, compression set less than 10 percent with pressure sensitive adhesive coating on one side. B. Thickness as required to fill voids between back of w

23、all molding and finish wall. C. Not less than 9 mm (3/8 inch) wide strip. 2.3 WIRE A. ASTM A641. B. For wire hangers: Minimum diameter 2.68 mm (0.1055 inch). C. For bracing wires: Minimum diameter 3.43 mm (0.1350 inch). 2.4 ANCHORS AND INSERTS A. Use anchors or inserts to support twice the loads imp

24、osed by hangers attached thereto. B. Hanger Inserts: 1. Fabricate inserts from steel, zinc-coated (galvanized after fabrication). 2. Nailing type option for wood forms: a. Upper portion designed for anchorage in concrete and positioning lower portion below surface of concrete approximately 25 mm (on

25、e inch). b. Lower portion provided with not less than 8 mm (5/16 inch) hole to permit attachment of hangers. 3. Flush ceiling insert type: Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-10-10 09 51 00 - 5 a. Designed to provide a shell covered openi

26、ng over a wire loop to permit attachment of hangers and keep concrete out of insert recess. b. Insert opening inside shell approximately 16 mm (5/8 inch) wide by 9 mm (3/8 inch) high over top of wire. c. Wire 5 mm (3/16 inch) diameter with length to provide positive hooked anchorage in concrete. C.

27、Clips: 1. Galvanized steel. 2. Designed to clamp to steel beam or bar joists, or secure framing member together. 3. Designed to rigidly secure framing members together. 4. Designed to sustain twice the loads imposed by hangers or items supported. D. Tile Splines: ASTM C635. 2.5 CARRYING CHANNELS FOR

28、 SECONDARY FRAMING A. Fabricate from cold-rolled or hot-rolled steel, black asphaltic paint finish, free of rust. B. Weighing not less than the following, per 300 m (per thousand linear feet): Size mm Size Inches Cold-rolled Kg Pound Hot-rolled Kg Pound 38 1 1/2 215.4 475 508 1120 50 2 267.6 590 571

29、.5 1260 2.6 ADHESIVE A. ASTM D1779, having flame spread index of 25 or less when tested in accordance with ASTM E84. B. Developing minimum strength of 7 kg/m2(one psi) of contact surface 48 hours after installation in temperature of 21 C (70 F). 2.7 ACOUSTICAL UNITS A. General: 1. Ceiling Tile shall

30、 meet minimum 37% bio-based content in accordance with USDA Bio-Preferred Product requirements. 2. ASTM E1264, weighing 3.6 kg/m2(3/4 psf) minimum for mineral fiber panels or tile. 3. Class A Flame Spread: ASTM 84 4. Minimum NRC (Noise Reduction Coefficient): 0.55 unless specified otherwise: ASTM C4

31、23. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-10-10 09 51 00 - 6 5. Minimum CAC (Ceiling Attenuation Class): 40-44 range unless specified otherwise: ASTM E413. 6. Manufacturers standard finish, minimum Light Reflectance (LR) coefficient of 0.75

32、 on the exposed surfaces, except as specified otherwise in Section 09 06 00, SCHEDULE FOR FINISHES. / Colored units integrally colored throughout./ SPEC WRITER NOTE: 1. Acoustical tile or panel layouts and sizes on reflective ceiling plans are required with penetrations shown. 2. In a small project

33、without sufficient penetrations to require a reflective ceiling plan specify tile size for lay-in panels. 7. Lay-in panels: Sizes as shown, with / square edges / reveal edges /. 8. Tile for concealed grid upward access system: Optional 300 by 300 or 300 by 600 mm (12 by 12 or 12 by 24 inch) size. a.

34、 Cross score 300 by 600 mm (12 by 24 inch) tile to simulate 300 by 300 mm (12 by 12 inch) tile edges. b. Provide tile with / beveled / square / edges and joints as required to suit suspension and access system. 9. Perforated metal facing (pan); tile or panels: a. Tiles: Size of units optional, 300 b

35、y 300, 300 by 600, 300 by 900, and 300 by 1200 mm (12 by 12, 12 by 24, 12 by 36, and 12 by 48 inches). Cross score units larger than 300 by 300 mm (12 by 12 inches) to simulate 300 by 300 mm (12 by 12 inch) units. Use beveled edge units. Design joints for snap-in attachment to suspension system. b.

36、Panels: Sizes as shown with / recessed reveal edges / flat panel with square edges to finish flush with exposed grid suspension system. / c. Sound absorbent element; either non-sifting mineral wool or glass fiber (free of formaldehyde)of density and thickness to provide specified noise reduction coe

37、fficient. Enclosure sound absorbent elements within plastic envelopes. d. Support sound absorbent elements on wire spacer about 6 mm (1/4 inch) high. Fit both the sound absorbent element and the spacer into the unit. 10. Adhesive applied tile: 300 by 300 mm (12 by 12 inch) size, having / beveled / s

38、quare / edges. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-10-10 09 51 00 - 7 B. Type III Units - Mineral base with water-based painted finish less than 10 g/l VOC, Form 2 - Water felted, minimum 16 mm (5/8 inch) thick. Mineral base to contain mi

39、nimum 65 percent recycled content. C. Type IV Units - Mineral base with membrane-faced overlay, Form 2 - Water felted, minimum 16 mm (5/8 inch) thick. Apply over the paint coat on the face of the unit a poly (vinyl) chloride overspray having a flame spread index of 25 or less when tested in accordan

40、ce with ASTM E84. D. Type V Units - Perforated steel facing (pan) with mineral or glass fiber base backing. 1. Steel ASTM A653, not less than 0.38 mm (0.015 inch) thick, minimum G30 galvanizing. 2. Bonderize both sides of sheet and apply two coats of baked-on enamel finish, free from gloss or sheen,

41、 on surfaces exposed to view and at least one coat on concealed surfaces. E. Type VI Units - Perforated stainless steel facing (pan) with mineral or glass fiber base backing. F. Type VII Units - Perforated aluminum facing (pan) with mineral or glass fiber base backing. 1. Fabricated from aluminum sh

42、eets not less than 0.635 mm (0.025 inch) thick. 2. Apply two coats of baked-on enamel finish, free from gloss or sheen, on face and flanges. SPEC WRITER NOTE; 1. If special type acoustical tile is required, include following subparagraphs and provide a detailed description of type of acoustical tile

43、 required. 2. Use special units in areas having high humidity conditions such as kitchens and hydrotherapy areas (swimming pools). Consider perforated aluminum facing units or ceramic units. 3. Use special IIIA units in open office spaces with higher NRC range, minimum of 0.75. Do not use glass fibe

44、r units. Combination units of glass fiber and mineral board acceptable. G. Type XX-A Units - Perforated Ceramic Units for Wet Service. 1. Conform to requirements of Part 2 - Article “ACOUSTICAL UNITS,“ subparagraphs Paragraph A, 1, 2, 3, 4, 5 and 6. 2. Formulated of mineral wool material and fired i

45、n a kiln to produce a stable panel which is totally unaffected by moisture even when submerged in water. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-10-10 09 51 00 - 8 3. No damage when subjected to 10 cycles of steam at 135 C (275 F) and cooling

46、 to 10 C (50 F). 4. Minimum of 16 mm (5/8 inch) thick. 5. Not affected when immersed in five percent chlorine solution, except for paint finish. H. Type III-A Units - Mineral base with painted finish. 1. Form 1, modular, cast or molded. 2. Minimum NRC of 0.75. 3. Minimum thickness of 19 mm (3/4 inch

47、) and weight of 4.9 Kg/sq m (one pound per square foot). I. Type XX-B Units - Combination mineral base and glass fiber with fabric finish. 1. Back half of panel: Perforated water felted mineral fiber. 2. Face half of panel: Glass fiber with glass cloth face. 3. Minimum NRC of 0.75. 4. Minimum thickn

48、ess of 28 mm (1 1/8 inches). 2.9 ACCESS IDENTIFICATION A. Markers: 1. Use colored markers with pressure sensitive adhesive on one side. 2. Make colored markers of paper of plastic, 6 to 9 mm (1/4 to 3/8 inch) in diameter. B. Use markers of the same diameter throughout building. C. Color Code: Use fo

49、llowing color markers for service identification: Color.Service Red.Sprinkler System: Valves and Controls Green.Domestic Water: Valves and Controls YellowChilled Water and Heating Water OrangeDuctwork: Fire Dampers BlueDuctwork: Dampers and Controls Black.Gas: Laboratory, Medical, Air and Vacuum PART 3 EXECUTION 3.1 CEILING TREATMENT A. Treatment of ceiling