Section 09513.pdf

AG-91S8-S-10-0014 Amendment 04

COMPOSITE CORE ACOUSTICAL PANEL CEILINGS 09513

SECTION 09513

COMPOSITE CORE ACOUSTICAL PANEL CEILINGS

PART 1 - GENERAL

1.1 SECTION INCLUDES

A. Composite core acoustical panels.

B. Suspended metal grid ceiling system.

C. Trim and miscellaneous accessories.

1.2 REFERENCES

A. American Society for Testing and Materials (ASTM):

1. ASTM C 423 - Standard Test Method for Sound Absorption and Sound

Absorption Coefficients by the Reverberation Room Method.

2. ASTM C 635 - Standard Specification for the Manufacture, Performance, and Testing of Metal Suspension Systems for Acoustical Tile and Lay-in Panel

Ceilings.

3. ASTM C 636 - Standard Practice for Installation of Metal Ceiling

Suspension Systems for Acoustical Tile and Lay-in Panels.

4. ASTM C 1338 - Standard Test Method for Fungal Resistance.

5. ASTM E 84 - Standard Test Method for Surface Burning Characteristics of Building Materials.

6. ASTM E 580 - Standard Practice for Application of Ceiling Suspension

Systems for Acoustical Tile and Lay-in Panels in Areas Requiring Seismic

Restraint.

7. ASTM E 1264 - Standard Classification for Acoustical Ceiling Products.

8. ASTM E 1477 - Standard Test Method for Luminance Reflectance Factor of Acoustical Materials by Use of Integrating-Sphere Reflectometers.

B. Ceilings and Interior Systems Construction Association (CISCA): CISACA -

AC: Acoustical Ceilings: Use and Practice.

1.3 SUBMITTALS

A. Submit under provisions of Section 01300.

B. Manufacturer's data sheets on each product to be used, including:

1. Preparation instructions and recommendations.

2. Storage and handling requirements and recommendations.

3. Installation methods.

C. Verification Samples: Two samples, not less than 4 by 7 inches (100 by 175 mm), representing actual acoustical panel product.

D. Verification Samples: Two samples, not less than 12 inches (300 mm) long, representing actual suspension system.

1.4 DELIVERY, STORAGE, AND HANDLING

A. Schedule delivery of acoustical panels so that spaces are sufficiently complete that panels can be installed immediately upon delivery.

B. Store products in accordance with manufacturer's requirements.

C. Store products in manufacturer's unopened packaging with labels intact until ready for installation. Protect products from exposure to sunlight and moisture.

D. Store products in clean, dry area indoors.

E. Handle acoustical panels to avoid soiling exposed surfaces or damaging surfaces and edges.

1.5 PROJECT CONDITIONS

A. Environmental Requirements: Maintain environmental conditions (temperature, humidity, and ventilation) within limits recommended by manufacturer for optimum results. Do not install products under environmental conditions outside manufacturer's absolute limits.

B. Do not install acoustical ceilings until building is enclosed, dust generating activities have terminated, wet work is complete and dry, and work above ceilings is complete.

1.6 WARRANTY

A. Manufacturer's standard written ten-year limited warranty.

1.7 EXTRA MATERIALS

A. Provide not less than 10 sq. feet (0.9 sq m) of acoustical ceiling panels of each panel size for Owner's use in maintenance of the project.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Acceptable Manufacturer: Hunter Douglas, USG, Certainteed or approved equal.

B. Requests for substitutions will be considered in accordance with provisions of

Section 01600.

2.2 ACOUSTICAL PANELS

A. Traditional Series Panels: Composite structural fiberglass core with non-woven polyester textile surface wrapped on two opposite edges and matching integral hinged support clip on other two edges; Hunter Douglas Techstyle Traditional

Series Acoustical Ceiling.

1. Accessibility: Panels shall be downward accessible without the use of tools.

2. Reveal: 9/16 inch between adjacent panels.

3. Panel Size: 24 by 24 inches (610 by 610 mm).

a. Panel Color: White.

4. Sound Absorption Average: (SAA) 0.89, measured in accordance with

ASTM C 423.

5. Surface Burning Characteristics: Flame spread less than 25 and smoke developed less than 50 per ASTM E 84 and ASTM E 1264.

6. Light Reflectance, White Only: LR-1 (75%), measured in accordance with

ASTM E 1477.

7. Moisture Resistance: Resistant to relative humidity up to 95 percent at 105 degrees F (40.5 degrees C) for 30 days.

8. Mold and Mildew Resistant: In accordance with requirements of ASTM C

665.

9. Fungi Resistant: Inc accordance with requirements of ASTM C 1338.

2.3 SUSPENSION SYSTEM

A. General: Provide system complying with ASTM C 635, die cut and interlocking components, with matching perimeter moldings and other accessories as required for project conditions.

1. Suspension System Materials: Formed galvanized steel, commercial quality cold rolled, intermediate duty.

a. Profile: Standard 9/16 inch (24 mm) tee shape.

1) Finish: Painted white.

a Color: White.

b. Support Channels and Hangers: Galvanized steel, size and type to suit application.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Verify that layout of hangers will not interfere with other work; make adjustments in layout as necessary.

B. Do not begin ceiling installation until installations above ceiling are complete except for final trim.

C. Notify Contracting Officer of unsatisfactory conditions before proceeding.

3.2 INSTALLATION OF SUSPENSION SYSTEM

A. Install in accordance with manufacturer's instructions and ASTM C 636.

B. Lay out system to a balanced grid design, with edge units not less than 50 percent of acoustical unit size (where possible).

C. Locate system on room axis according to reflected ceiling plan.

D. Install in compliance with requirements of CISCA Acoustical Ceilings: Use and

Practice.

E. Install in accordance with manufacturer's instructions and ASTM E 580.

F. Attach hangers to structural members. Do not support ceilings directly from permanent metal forms or steel floor or roof deck.

G. Space hangers not more than 48 inches (1220 mm) on center, in both directions.

H. Hang suspension system independent of walls, columns, ducts, pipes and conduit.

Where carrying members are spliced, avoid visible displacement of face plane of adjacent members.

I. Where ducts or other equipment prevent the regular spacing of hangers, reinforce the nearest affected hangers and related carrying channels to span the extra distance.

J. Support fixture loads using supplementary hangers located within 6 inches (150

mm) of each corner, or support components independently. Do not eccentrically load system or induce rotation of runners.

K. Perimeter Trim: Install at intersection of ceiling and vertical surfaces and at junctions with other interruptions.

3.3 INSTALLATION OF ACOUSTICAL PANELS

A. Install acoustical panels in accordance with manufacturer's written instructions.

B. Fit adjoining panels to form nominal 1/4 inch (6 mm) reveal joints. Scribe and cut panels for accurate fit at perimeter and around penetrations.

C. Hold tile field in compression when performing cuts. Match field cut edges with factory edges in accordance with manufacturer's instructions.

D. Install acoustical panels after above-ceiling work is complete. Install panels level, in uniform plane, and free from warp, twist, and dents.

E. Installation Tolerance: Maximum variation from flat and level surface is 1:360.

3.4 CLEANING

A. Clean exposed surfaces of acoustical panel ceilings, including suspension system and edge trim, complying with manufacturer's written instructions for cleaning of minor finish damage. Replace acoustical panels that cannot be cleaned to an appearance matching unmarred panels.

B. Replace acoustical panels that cannot be cleaned to an appearance matching unsoiled panels.

3.5 PROTECTION

A. Protect installed acoustical panel ceilings until completion of project. Replace acoustical panels damaged before Substantial Completion.

END OF SECTION 09513