A.02 Amendment 0005 09 54 23 - Linear Metal Ceilings 21R4003 5.20.21.pdf

Columbia VAMC –Correct Parking Site Deficiencies 05-19-2021 Columbia, SC Construction Documents VA Project No. 544-330 10-01-15

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SECTION 09 54 23

LINEAR METAL CEILINGS

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, me chanically mounted on a ceiling suspension system.

3. Accessories:

a. Closures, trim, edge molding and all other items re quired to provide complete installation.

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

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

1.2 RELATED WORK:

A. Access Doors: Section 08 31 13, ACCESS DOORS AND FR AMES.

B. Finish Color: Section 09 06 00, SCHEDULE FOR FINISH ES.

C. Interior Lighting: Section 26 51 00, INTERIOR LIGHT ING.

1.3 QUALITY CONTROL:

A. Qualifications:

1. Manufacturer: Approval required for products of pro posed manufacturer, to be based upon submission by certif ying that:

a. Manufacturer has provided linear metal ceiling syst ems and related accessories as one of its principal product s for a minimum of three (3) years.

b. Accessories required for linear metal ceiling syste ms 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 fu nctional 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 install ation of linear metal ceiling units and suspension system component s with other work

09 54 23 - 2 supported by, or penetrating through, ceilings, inc luding light fixtures, HVAC equipment, fire-suppression system c omponents (if any), and partition system (if any):

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

2. HVAC Air Outlets and Inlets: Planned to occur withi n center of panel systems or provide for equal distance on each side parallel to length of panels.

1.4 SUBMITTALS:

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

DATA, AND SAMPLES.

B. Manufacturer's Literature and Product Data:

1. Manufacturer’s standard details and fabrication met hods.

2. Data on finishing, hardware, components, and access ories.

3. Recommendations for maintenance and cleaning of fin ish surfaces.

C. Shop Drawings:

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

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

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 inc h) scale, showing location of all accessories, mechanical and electri cal 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 panel s. Special moldings at walls, column penetrations, and other j unctures with adjoining construction.

5. Provisions for expansion and contraction.

6. Anchors and reinforcements.

D. Samples:

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

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

a. Linear metal panel.

b. Each exposed molding and trim sections.

c. Suspension system members.

d. Filler strips.

e. Insulation.

f. End cap.

2. Where normal color variations are anticipated, incl ude 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).

E. Certificates:

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

2. Indicating manufacturer’s and installer’s meet qual ifications as specified.

1.5 DELIVERY, STORAGE AND HANDLING:

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

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

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

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 relati ve humidity of not more than 70 percent are to be maintained for a per iod 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 plastering, gypsum boa rd finishing, painting, concrete and terrazzo work are to be comp lete and dry before

09 54 23 - 4 installation. Mechanical, electrical, and other wor ks above ceiling line are to be completed and heating, ventilating, and air conditioning systems are to be installed and operating in order to maintain temperature and humidity requirements.

1.8 WARRANTY:

A. Construction Warranty: Comply with FAR clause 52.24 6-21, "Warranty of

Construction".

1.9 APPLICABLE PUBLICATIONS:

A. Publications listed below form a part of this speci fication to extent referenced. Publications are referred to in text by basic designation only.

B. American Architectural Manufacturers Association (A AMA):

2605-13.................High Performance Organic Co atings on

Architectural Extrusions and Panels

C. ASTM International (ASTM):

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

A653/A653M-13...........Steel Sheet, Zinc-Coated (G alvanized) 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, a nd Testing of Metal

Suspension Systems for Acoustical Tile and Lay-

In Panel Ceilings

C636/C636M-13...........Installation of Metal Ceili ng Suspension

Systems for Acoustical Tile and Lay-In Panels

E90-09..................Laboratory Measurement of A irborne Sound

Transmission Loss of Building Partitions

E580/E580M-14...........Application of Ceiling Susp ension Systems for

Acoustical Tile and Lay-in Panels in Areas

Requiring Seismic Restraint

D. National Association of Architectural Metal Manufac turers (NAAMM):

Metal Finishes Manual (2006)

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PART 2 -– PRODUCTS

Provide perforated aluminum linear metal ceiling on suspension track by Armstrong or equal.

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 fin ished unit. Do not use materials whose exposed surfaces exhibit pi tting, seam marks, roller marks, stains, discolorations, or oth er imperfections.

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

B. Accessories: Stabilizer bars, clips, splices, 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 she et, alloy

3005-H26, complying with following requirements:

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

3. Perforation Pattern: Micro-perforated.

D. Suspension Systems, General:

1. Standard for Metal Suspension Systems: Provide manu facturer’s standard types, structural classifications, and fin ishes 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, Tab le 1, Direct

Hung, unless otherwise indicated.

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

E. Wire for Carriers, Hangers, and Ties: ASTM A641/A64 1M, 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 supportin g material or attachment.

F. Hanger Rods: Mild steel, zinc coated, or protected with rust-inhibitive paint.

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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 bolt ed connections and

7.6 mm (5/16 inch) diameter bolts.

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

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

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

K. Miscellaneous Components and Materials:

1. Access Doors: Refer to Section 08 31 13, ACCESS DOO RS AND FRAMES for requirements. Access doors, required for use in lin ear metal ceiling system, are to match adjacent ceiling panel units a nd be designed and equipped with suitable framing and fastenings f or 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, P AINTING for requirements of identification markers for use, wit h various mechanical systems above ceiling, under this section.

2.2 FINISHES:

A. Comply with NAAMM “Metal Finishes Manual”.

B. Protect mechanical finishes on exposed surfaces fro m damage by application of strippable, temporary protective cov ering before shipment.

C. Appearance of Finished Work: Variations in appearan ce of abutting or adjacent ceiling units are not acceptable. Noticeab le variations in same piece are not acceptable.

D. Aluminum Finishes:

1. Lacquered Mill Finish: AA-M10C10R1X.

a. Organic Coating: Manufacturer’s standard, clear, or ganic coating.

2. Class II, Clear, Satin-Anodized Finish: AA-M32C12A2 12. Anodic

Coating: protective and decorative, clear film; coa ting thickness:

.0052 mm (0.2 mil minimum).

3. Class II, Clear, Mirror-Anodized Finish: AA-M21C12A 212. Anodic

Coating: protective and decorative, clear film; coa ting thickness:

.0052 mm (0.2 mil minimum).

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4. High-Performance, Organic Coating: Comply with AAMA 2605.

5. Color and Gloss: Refer to Section 09 06 00, SCHEDUL E FOR FINISHES.

PART 3 -EXECUTION

3.1 INSPECTION:

A. Ceiling Areas: Conform with details, dimensions and tolerances shown on approved linear metal ceiling system composite refl ected ceiling plan shop drawings.

B. Conditions which may adversely affect linear metal ceiling system installation are to be corrected prior to commencem ent of linear metal ceiling system installation.

C. Where linear metal ceiling system is installed adja cent to masonry, wash-down of adjacent masonry is to be completed pr ior 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 l inear 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 Sys tems: Comply with

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

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

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

2. Where width of ducts and other construction within ceiling plenum produces hanger spacings that interfere with locati on of hangers at spacings required to support standard suspension sy stem members, 09 54 23 - 8 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 devic es that are secure and appropriate for structure to which hange rs are attached as well as for type of hanger involved, and in a ma nner that will not cause them to deteriorate or fail because of ag e, corrosion, and elevated temperatures.

4. Space hangers not more than 1219 mm (48 inches) on center along each member supported directly from hangers, unless othe rwise 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 ex posed after completion of Work. Level moldings with ceiling sus pension system to level tolerance of 3 mm (1/8 inch) in 3657 mm (12 f eet).

1. Masonry and Concrete: Fasten with machine screws in to lead-shield-type anchors drilled into construction.

2. Hollow Masonry or Stud Construction: Fasten with to ggle bolts or similar self-expanding screw anchors.

D. Ceiling Access Doors:

1. Ceiling access doors are to be located directly und er items which require access.

E. Scribe and cut metal panel units for accurate fit a t borders and at interruptions and penetrations by other work throug h ceilings. Stiffen edges of cut units as required to eliminate evidenc e of buckling or variations in flatness exceeding referenced standar ds for stretcher-leveled metal sheet.

F. Align joints in adjacent courses to form uniform, s traight joints parallel to room axis in both directions, unless ot herwise indicated in construction documents.

G. Install panels with butt joints using internal conc ealed panel splices and in joint configurations shown on construction d ocuments in reflected ceiling plan.

H. Install acoustical insulation blankets at right ang le to panels so that they do not hang unsupported.

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3.4 CLEANING:

A. Following installation, dirty or discolored surface s 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 a nd new units provided as directed.

3.5 PROTECTION:

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

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