SECTION 09570
WOOD CEILING SYSTEM

PART 1. GENERAL

1.01 RELATED DOCUMENTS

A. Drawings and general provisions of Contract including General and Supplementary Conditions.

1.02 SUMMARY

A. This section describes the requirements for providing the suspended wood ceiling systems as indicated on the drawings and specified, to include:

1. Linear wood ceiling panels

2. Suspension assemblies

3. Sound absorbing materials

4. Accessories; provide all other necessary items including devices for attachments to overhead construction, secondary members, splines, splices, connecting clips, wall connectors, wall trims and all other devices required for a complete installation.

5. Coordinate items penetrating or being integrated into ceiling systems with responsible trades.

6. (Optional) Integrated air distribution plenums.

7. (Optional) Access Doors

1.03 Quality Assurance

A. Reference Standards:

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

a. C635 Specifications for Metal Suspension for Acoustical Tile and Lay-In Panel Ceiling.

b. C636 Practice for Installation of Metal Ceiling Suspension Systems for Acoustical Tile and Lay-In Panels.

2. Local Building Code, current edition requirements.

3. All woodworking materials shall meet the requirements of the Architectural Woodworking Institute. (AWI) AWI and/or WIC.

1.04 Submittals

A. Comply with the requirements of Division 1, Section 01300, Submittals.

B. Product Data: Submit manufacturer's product descriptions and specifications for wood ceiling system.

C. Samples: Submit full size ceiling panel minimum of 12" long showing straight edge detail with an attached suspension system and perimeter trim member in the specified finish.

D. (Optional) Mock-up: Submit a full size production quality ceiling panel for an area of 10' x 10'. Mock-up shall include all required accessories for a complete installation, including suspension and trims.

E. Shop Drawings:

1. Provide properly dimensioned shop drawings showing ceiling layout. Show all locations, markings, quantities, materials, sizes and shapes and indicate all methods of connecting, anchoring, fastening, bracing and attaching to work of other trades. Shop drawing submittals to be on computer aided design systems and furnished on computer disks. System shall be compatible with that of the architect.

PART 2. PRODUCTS

2.01 MATERIALS

A. Project design is based on materials and systems of Ceilings Plus, Los Angeles, CA 800-822-3411, www.ceilingsplus.com

Other manufacturers must be approved prior to the bid in written form, by the architect. Specified manufacturer's standard of quality and manufacturing tolerances shall be criteria for evaluating "equivalent" product.

2.02 LINEAR WOOD CEILING PANELS

A. Linear Wood Panels, "Planx" #PL-II. Class A Fire rated with flame spread 20, Smoke developed 25. (Underwriter's Laboratories, Inc. UL#723.)

B. The panel thickness shall be min. 3/4" with detail to accept proprietary attachment clip supplied with system. The panels shall be Class I fire rated core with a select veneer species as selected by the architect. The panels will be finished with a clear, two-step sealer and topcoat on front and backside. All exposed surfaces of the veneer shall be finish sanded with 600-grit sandpaper between sealer and finish coat.

C. The wood veneer specie shall be 3 face on (all exposed faces) with a generic balancing veneer on back. Veneer shall (insert specie here). Range of veneer grain and color to be submitted for approval.

D. No fasteners of any kind shall be visible on exposed face surfaces of ceiling panels or support tees. Down light openings and sprinkler holes shall be neatly cut and finished as required.

E. Use extruded aluminum splices, supplied by specified manufacturer to align and control elevation of panels.

F. Provide and install 1" thick X 3 pound per cubic foot density black face Fiberglass into support grid openings. All slots must be completely covered by sound absorbing material, except where noted. NRC value of .80 @ 500 Hz must be achieved.

 

2.03 SUPPORTING GRID

A. Supporting grid system shall consist of (pre-curved or) straight, factory formed tee in adequate thickness, to support loads. Finish tee color black, unless otherwise specified by architect.

B. Ceiling suspension shall meet structural requirements as required in ASTM 635, ASTM 636, heavy duty direct hung ceilings. Main runners shall be spaced min 2' on center to support load of panels.

C. Hanger attachments shall be 12-ga. pre-straightened steel wires, rods or other approved hanging device that will support required loads. Attach tee to structure @ 4'-0" O.C. along main runners. Install seismic bracing if required by code.

D. Tolerances: Maximum deviation of ceiling panels from edge to edge in width shall not exceed 1/8" in 10' when measured with a straightedge placed at any directional location on the finished surfaces. Maximum deviation of finished ceiling shall not exceed 1/4" from level in any area or room.

PART 3. EXECUTION

3.01 INSPECTION

A. General Installation:

1. Materials shall be installed in strict accordance with procedures recommended by the manufacturer and requirements of agencies having jurisdiction. All materials for this section shall be from a single source ceiling manufacturer with minimum 5 years experience with products of the nature specified.

2. Attach supporting channels of adequate strength to construction above by approved connection method according to local building codes.

3. The contractor responsible for the work of this section shall be qualified and experienced in the performance of this work and done so for no less than a period of 5 years.

B. Product Handling

1. Delivery: Deliver wood ceiling materials to jobsite in unopened containers identified with product manufacturer's name, trade name and other applicable identification.

2. Storage: Store all materials in dry and protected locations for minimum 3 days prior to installation. Relative humidity should be approximately 50-55% at 70 degrees F (21 degrees C). Store away from direct sunlight. Install when space is completely conditioned, clean and free of airborne particles.

3. Remove and replace units that have been damaged or cannot be satisfactorily cleaned to the owner's or architect's acceptance, at no additional cost to the owner. To clean materials follow manufacturer's written cleaning procedures.

C. Maintenance

1. Maintenance instructions, as written by the manufacturer, are to be left with the building owner.