095423 added.pdf

Expand Parking Garage and Add Overhead Walkway Final Construction Documents James H. Quillen VA Medical Center, Mountain Home, TN Response to Bid RFI Contract 36C249-19-C-0168, PO 621Z90002, Project 621-332

09 54 23 - 1

SECTION 09 54 23

LINEAR METAL CEILINGS

05-01-15

PART 1 - GENERAL

1.1 DESCRIPTION:

A. This 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 required to provide complete installation.

B. Unit size, texture, finish, and color as specified.

C. Location and extent of acoustical treatment as shown on construction documents.

1.2 RELATED WORK:

A. Interior Lighting: Section 26 51 00, INTERIOR LIGHTING.

1.3 QUALITY CONTROL:

A. Qualifications:

1. Manufacturer: Approval required for products of proposed manufacturer, to be based upon submission by certifying that:

a. Manufacturer has provided linear metal ceiling systems and related accessories as one of its principal products for a minimum of three (3) years.

b. Accessories required for linear metal ceiling systems are to be manufacturer's standard or other systems compatible with linear metal ceiling system manufacturer’s material. Items are to be of materials and construction which provide desired functional service.

2. Installer: Approved in writing by manufacturer and having a minimum of three (3) years’ experience in the installation of linear metal ceilings on projects of equivalent size.

B. Coordination of Work: 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):

09 54 23 - 2

1. Sprinkler heads and light fixtures: Centered width of panel, unless indicated otherwise on construction documents.

A. Seismic Design:

1. Design suspension system for seismic considerations under direct supervision of Professional Structural Engineer experienced in design of this work and licensed in the state where the work is located. Comply with ASTM E580/E580M for ceiling suspension systems requiring seismic restraint.

1.4 SUBMITTALS:

A. Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT

DATA, AND SAMPLES.

B. Sustainable Design Submittals as described below:

C. Manufacturer's Literature and Product Data:

1. Manufacturer’s standard details and fabrication methods.

2. Data on finishing, hardware, components, and accessories.

3. Recommendations for maintenance and cleaning of finish surfaces.

D. Shop Drawings:

1. Submit complete composite fabrication, and installation shop drawings including associated components.

2. Identify panel sections, trim, and other component parts, not included in manufacturer’s product data, by name and material and showing design, construction, installation, and anchorage.

3. Layout and installation details, including relation to adjacent work such as walls and bulkheads.

4. Composite reflected ceiling plans, at 1:25 (1/4 inch) scale, showing location of all accessories, mechanical and electrical components.

Indicate the following:

a. Joint pattern.

b. Ceiling suspension members.

c. Method of attaching hangers to building structure.

d. Ceiling-mounted 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. Provisions for expansion and contraction.

6. Anchors and reinforcements.

09 54 23 - 3

E. Samples:

1. Submit pairs of samples of each specified color and finish on 305 mm

(12 inch) long sections of extrusions or formed shapes for following:

a. Linear metal panel.

b. Each exposed molding and trim sections.

c. Suspension system members.

d. Filler strips.

e. 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 less than 203 by 254 mm (8 by 10 inches).

F. Certificates:

1. Stating that linear metal ceiling system material has been given specified thickness of anodizing or organic coating finish.

2. Indicating manufacturer’s and installer’s meet qualifications as specified.

1.5 DELIVERY, STORAGE AND HANDLING:

A. Materials: Deliver to site in manufacturer's original unopened containers with brand name and type clearly marked.

B. Materials: Carefully handle and store in dry, watertight enclosures.

C. Before installation, linear metal ceiling units are to be stored for not less than 48 hours at same temperature and relative humidity as space where they will be installed to assure temperature and moisture conditions in accordance with manufacturer’s recommendations.

1.6 ENVIRONMENTAL REQUIREMENTS:

A. Uniform temperature of not less than 16 degrees C, (60 degrees F) nor more than 27 degrees C, (80 degrees F) and a relative humidity of not more than 70 percent are to be maintained for a period of 48 hours before, during, and for 48 hours after installation of linear metal ceiling units. After above period, room temperature is not permitted to fall below 13 degrees C (55 degrees F).

1.7 SCHEDULING:

A. Interior finish work such as painting, concrete work are to be complete and dry before installation. Electrical, and other works above ceiling line are to be completed prior to ceiling installation.

09 54 23 - 4

1.8 WARRANTY:

A. Construction Warranty: Comply with FAR clause 52.246-21, "Warranty of

Construction".

1.9 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 Manufacturers Association (AAMA):

2605-13.................High Performance Organic Coatings on

Architectural Extrusions and Panels

C. ASTM International (ASTM):

A641/A641M-09a(R2014)...Zinc-coated (Galvanized) Carbon Steel Wire

A653/A653M-13...........Steel Sheet, Zinc-Coated (Galvanized) or Zinc-

Iron Alloy-Coated (Galvannealed) by Hot-Dip

Process

B209-14.................Aluminum and Aluminum-Alloy Sheet and Plate

B209M-14................Aluminum and Aluminum-Alloy Sheet and Plate

(Metric)

C635/C635M-13a..........Manufacture, Performance, and Testing of Metal

Suspension Systems for Acoustical Tile and Lay-

In Panel Ceilings

C636/C636M-13...........Installation of Metal Ceiling Suspension

Systems for Acoustical Tile and Lay-In Panels

E90-09..................Laboratory Measurement of Airborne Sound

Transmission Loss of Building Partitions

E580/E580M-14...........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):

Metal Finishes Manual (2006)

PART 2 - PRODUCTS

2.1 MATERIALS:

A. Linear Metal Ceiling System, General:

1. Sheet Metal Characteristics: Form metal panels from 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.

09 54 23 - 5

2. Fabrication: Die-form linear metal panels into units standard with manufacturer and finished as specified herein.

B. Accessories: Clips, splices, and hold down clips 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.

2. Aluminum Panels: ASTM B209M (B209), roll-formed sheet, alloy

3005-H26, complying with following requirements:

a. Minimum Nominal Thickness: 0.50 mm (0.020 inch.

3. Panel Performance: As follows:

a. Light Reflectance Coefficient: LR 0.70 .

b. Noise Reduction Coefficient: NRC 0.75 .

D. Suspension Systems, General:

1. Standard for Metal Suspension Systems: Provide manufacturer’s standard types, structural classifications, and finishes indicated that comply with ASTM C635/C635M requirements.

2. Anchors: Type as recommended by manufacturer. Size for five (5) times design load indicated in ASTM C635/C635M, Table 1, Direct

Hung, unless otherwise indicated.

3. Provide manufacturer’s standard compression seismic struts designed to accommodate seismic forces.

E. Wire for Carriers, Hangers, and Ties: ASTM A641/A641M, Class 1, zinc coating, soft temper.

1. Gage: Minimum 12 gage. Supporting a minimum of 1334 N, (300 pounds) ultimate vertical load without failure of supporting material or attachment.

F. Hanger Rods: Mild steel, zinc coated, or protected with 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 bolted connections and

7.6 mm (5/16 inch) diameter bolts.

I. Edge Moldings and Trim: Manufacturer’s standard molding for edges and penetrations of ceiling.

09 54 23 - 6

J. Carriers: Comply with ASTM A653/A653M, cold-rolled, electro-galvanized,

0.55 mm (0.0219 inch) (25 gage) minimum nominal thickness steel.

2.2 FINISHES:

A. Comply with NAAMM “Metal Finishes Manual”.

B. Protect mechanical finishes on exposed surfaces from damage by application of strippable, temporary protective covering before shipment.

C. Appearance of Finished Work: Variations in appearance of abutting or adjacent ceiling units are not acceptable. Noticeable variations in same piece are not acceptable.

D. Aluminum Finishes:

1. Class II, Clear, Satin-Anodized Finish: AA-M32C12A212. Anodic

Coating: protective and decorative, clear film; coating thickness:

.0052 mm (0.2 mil minimum).

E. Touch-up Paint For Concealed Items: Zinc rich 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 affect linear metal ceiling system installation are to be corrected prior to commencement of linear metal ceiling system installation.

C. Where linear metal ceiling system is installed adjacent to masonry, wash-down of adjacent masonry is to be completed prior to erection of ceiling system to prevent damage to material finish by cleaning materials.

3.2 PREPARATION:

A. Measure each ceiling area and establish layout of linear metal panel units to balance border widths at opposite edges of each ceiling. Avoid using units less than half wide at borders.

3.3 INSTALLATION:

A. Standard for Installation of Ceiling Suspension Systems: Comply with

ASTM C636/C636M and ASTM E580/E580M as applicable to linear metal panel ceiling suspension system.

B. Suspend ceiling hangers from building structural members and as follows:

09 54 23 - 7

1. Install hangers plumb, free from contact with insulation or other objects within ceiling plenum that are not part of supporting structural or ceiling suspension system. Splay hangers where required to avoid obstructions and offset resulting horizontal forces by bracing, counter splaying, or other equally effective means.

2. Where width of other construction within ceiling plenum produces hanger spacings that interfere with location of hangers at spacings required to support standard suspension system members, install supplemental suspension members and hangers in form of trapezes or equivalent devices.

3. Secure hangers to structure, including intermediate framing members, by attaching to inserts, eye screws, or other devices that are secure and appropriate for structure to which hangers are attached as well as for type of hanger involved, and in a manner that will not cause them to deteriorate or fail because of age, corrosion, and elevated temperatures.

4. Space hangers not more than 1219 mm (48 inches) on center along each member supported directly from hangers, unless otherwise shown on construction documents.

C. Install edge moldings at edge of each linear metal ceiling area and at locations where edge of units would otherwise be exposed after completion of Work. Level moldings with ceiling suspension system to level tolerance of 3 mm (1/8 inch) in 3657 mm (12 feet).

1. Hollow Masonry or Stud Construction: Fasten with toggle bolts or similar self-expanding screw anchors.

E. Scribe and cut metal panel units for accurate fit at borders and at interruptions and penetrations by other work through ceilings. Stiffen edges of cut units as required to eliminate evidence of buckling or variations in flatness exceeding referenced standards for stretcher-leveled metal sheet.

F. Align joints in adjacent courses to form uniform, straight joints parallel to room axis in both directions, unless otherwise indicated in construction documents.

G. Install panels with butt joints using internal concealed panel splices and in joint configurations shown on construction documents in reflected ceiling plan.

09 54 23 - 8

3.4 CLEANING:

A. Following installation, dirty or discolored surfaces of linear metal ceiling units are to be cleaned, in accordance with manufacturer’s written recommendations, and left free from defects. Units that are damaged or improperly installed are to be removed and new units provided as directed.

3.5 PROTECTION:

A. Protect linear metal ceiling systems from damage until final inspection and acceptance.

- - - END - - -