SECTION 09 51 13 ACOUSTICAL PANEL CEILINGS PART 1 - GENERAL 1.1 SUMMARY A. Section includes acoustical panels and exposed suspension systems for ceilings. 1.2 SUBMITTALS A. Product Data: For each type of product. For products having recycled content, include percentages by weight of postconsumer and preconsumer recycled content, and include statement indicating costs for each product. B. Shop Drawings: Submit shop drawings with reflected ceiling plans drawn accurately to large scale and coordinating penetrations and ceiling-mounted items. Include setting out/work points; method of attaching suspension system hangers to building structure; and location of ceilingmounted items, including light fixtures, air outlets and inlets, speakers, sprinklers, and moldings at walls, penetrations, and other junctures of acoustical ceilings with adjoining construction. C. Samples: Submit samples for each component indicated and for each exposed finish required, prepared on Samples of size indicated below. Samples shall show the full range of color and texture variations to be expected in the final installation. 1. Acoustical Panels: Set of 6-inch- square Samples of each type, color, pattern, and texture. 2. Suspension System and Moldings: Set of 12-inch- long Samples of each type, finish, and color. D. Laboratory Test Reports: Submit test reports for ceiling systems and sealants, indicating that products comply with the testing and product requirements of the California Department of Public Health's "Standard Method for the Testing and Evaluation of Volatile Organic Chemical Emissions from Indoor Sources Using Environmental Chambers, Version 1.1" (2010). E. Maintenance Data: Submit manufacturer's recommendations for cleaning and refinishing acoustical panels and exposed portions of suspension system. Include information regarding cleaning materials and methods that may be detrimental to exposed finishes and acoustical performance. 1.3 QUALITY ASSURANCE A. Installer Qualifications: Engage an Installer with not less than five years experience in the installation of materials specified, and who has completed acoustical panel ceilings similar in material, design, and extent to that indicated for the Project and whose work has resulted in a record of successful in-service performance. B. Surface-Burning Characteristics: Comply with ASTM E 84; testing by a qualified testing agency acceptable to authorities having jurisdiction. Identify products with appropriate markings of applicable testing agency. HERZL CO-LOCATION 09 51 13-1 ACOUSTICAL PANEL CEILINGS
1. Flame-Spread Index: Comply with ASTM E 1264 for Class A materials. 2. Smoke-Developed Index: 50 or less. 1.4 STORAGE AND HANDLING A. Deliver acoustical ceiling panels, suspension system components, and accessories to Site in original, unopened packages and store them in a fully enclosed, conditioned space where they will be protected against damage from moisture, direct sunlight, surface contamination or other causes. B. Before installing acoustical ceiling panels, permit them to reach room temperature and stabilized moisture content. C. Handle acoustical ceiling panels carefully to avoid chipping edges or damaging units in any way. 1.5 PROJECT CONDITIONS A. Space Enclosure: Do not install interior acoustical ceilings until space is enclosed and weatherproof, wet-work (painting, gypsum board, plastering, tiling, and concrete leveling) in space is completed and dry, work above ceilings is complete, and ambient temperature and humidity conditions will be continuously maintained at values indicated for the Project when occupied for its intended use. 1.6 COORDINATION A. Coordinate layout and installation of acoustical panels and suspension system with other construction that penetrates ceilings or is supported by them, including light fixtures, HVAC equipment, fire-suppression system, and partition assemblies. B. Furnish layouts for inserts, clips, or other supports required to be installed by other trades for support of acoustical ceilings well in advance of time needed so not to cause a delay in the Work. 1.7 EXTRA MATERIALS A. Furnish and store at the Site where directed by the Board Authorized Representative, two (2) percent of each type of acoustical panel installed, but not less than three (3) boxes of each type, packaged in manufacturer's unopened cartons, with protective covering to prevent damage from moisture or other causes, and manufacturer's labeling as to contents. PART 2 - PRODUCTS 2.1 ACOUSTICAL PANELS, GENERAL A. Low-Emitting Materials: Acoustical panel ceilings shall comply with the testing and product requirements of the California Department of Public Health's "Standard Method for the Testing and Evaluation of Volatile Organic Chemical Emissions from Indoor Sources Using Environmental Chambers," Version 1.1 (2010). HERZL CO-LOCATION 09 51 13-2 ACOUSTICAL PANEL CEILINGS
B. Source Limitations: Obtain each type of acoustical ceiling panel and supporting suspension system from single source from single manufacturer. C. Recycled Content: 1. Acoustical Panels: Maximize the percentage of recycled material(s) in acoustical panels, but not less 40%. 2. Suspension Systems: Maximize the percentage of recycled material(s) in suspension system components, but not less 50%. 2.2 ACOUSTICAL PANELS A. Acoustical Ceiling Type 1 (APC-1): Wet formed mineral fiber acoustical panels, complying with ASTM E 1264 Classification Type III, Form 1 or 2, Pattern E. 1. Locations: Classrooms, enclosed offices, conference rooms, and faculty workrooms. 2. Manufacturers and Products: Subject to compliance with requirements, provide one of the following: a. Armstrong World Industries; School Zone Fine Fissured. b. CertainTeed Ceilings Corp.; Performa Fine Fissured High NRC. c. USG Corporation; Radar ClimaPlus High-NRC. 3. NRC: Not less than 0.70. 4. CAC: Not less than 32. 5. Edge: Square. 6. Modular Size: 24-inches by 24-inches. 7. Thickness: 3/4-inch. 8. Color: White. B. Acoustical Ceiling Type 2 (APC-2): Glass-fiber base with membrane-faced overlay, complying with ASTM E 1264 Classification Type XII, Form 2, Pattern E. 1. Locations: Library, music room(s), and cafeteria/dining. 2. Manufacturers and Products: Subject to compliance with requirements, provide one of the following: a. Armstrong World Industries; Optima Square Lay-In. b. CertainTeed Ceilings Corp.; Performa VOC Compliant Symphony f. c. USG Corporation; Halcyon ClimaPlus. 3. NRC: Not less than 0.95. 4. Edge: Square. 5. Modular Size: 24-inches by 24-inches. 6. Thickness: 1-inch. 7. Color: White. C. Acoustical Ceiling Type 4 (APC-4): Wet formed mineral fiber acoustical panels, complying with ASTM E 1264 Classification Type III, Form 1 or 2, Pattern C, D, E. HERZL CO-LOCATION 09 51 13-3 ACOUSTICAL PANEL CEILINGS
1. Locations: Corridors, open offices, service hallways, storage rooms, and back of house areas as indicated. 2. Manufacturers and Products: Subject to compliance with requirements, provide one of the following: a. Armstrong World Industries; School Zone Fine Fissured. b. CertainTeed Ceilings Corp.; Performa School Board. c. USG Corporation; Radar ClimaPlus High-Durability. 3. NRC: Not less than 0.55. 4. CAC: Not less than 33. 5. Edge: Square. 6. Modular Size: 24-inches by 24-inches. 7. Thickness: 5/8-inch. 8. Color: White. 2.3 METAL SUSPENSION SYSTEMS, GENERAL A. Metal Suspension-System Standard: Provide manufacturer's standard direct-hung metal suspension systems of types, structural classifications, and finishes indicated that comply with applicable requirements in ASTM C 635. 1. Structural Classification: Intermediate duty. B. Attachment Devices: Size for five times the design load indicated in ASTM C 635, Table 1, "Direct Hung," unless otherwise indicated or recommended by manufacturer. 1. Anchors in Concrete: Provide one of the following types: a. Postinstalled Expansion Anchors: Suitable for application indicated, fabricated from corrosion resistant materials, with holes or loops for attaching hangers of type indicated and with capability to sustain, without failure, a load equal to five times that imposed by ceiling construction, as determined by testing according to ASTM E 488 or ASTM E 1512 as applicable, conducted by a qualified testing and inspecting agency. 1) Corrosion Protection: Carbon-steel components zinc plated to comply with ASTM B 633, Class Fe/Zn 5 (0.005 mm) for Class SC 1 service condition. b. Power-Actuated Fasteners: Fastener system of type suitable for application indicated, fabricated from corrosion-resistant materials, with clips or other accessory devices for attaching hangers of type indicated and with capability to sustain, without failure, a load equal to ten times that imposed by ceiling construction, as determined by testing according to ASTM E 1190, conducted by a qualified testing and inspecting agency. C. Wire Hangers, Braces, and Ties: Provide wires complying with the following requirements: 1. Zinc-Coated, Carbon-Steel Wire: ASTM A 641, Class 1 zinc coating, soft temper. HERZL CO-LOCATION 09 51 13-4 ACOUSTICAL PANEL CEILINGS
2. Size: Select wire diameter so its stress at three times hanger design load (ASTM C 635, Table 1, "Direct Hung") will be less than yield stress of wire, but provide not less than 0.106-inch- diameter (12 gage) wire. 2.4 METAL SUSPENSION SYSTEMS A. Wide-Face, Capped, Double-Web, Steel Suspension System: Main and cross runners roll formed from cold-rolled steel sheet; prepainted, electrolytically zinc coated, or hot-dip galvanized according to ASTM A 653/A 653M, not less than G30 coating designation; with prefinished 15/16-inch- wide metal caps on flanges. 1. Structural Classification: Intermediate-duty system. 2. Face Design: Flat, flush capped faces. 3. Cap Material and Finish: Steel cold-rolled sheet painted to match color of acoustical panels. 2.5 EDGE MOLDINGS AND TRIM A. Roll-Formed, Sheet-Metal Edge Moldings and Trim: Provide manufacturer's standard edge moldings that fit acoustical panel edge details and suspension systems indicated and that match width and configuration of exposed runners, formed from sheet metal of same material, finish, and color as that used for exposed flanges of suspension-system runners; provide in longest standard single piece lengths. For penetrations of ceiling, provide edge moldings fabricated to fit penetration exactly. 2.6 SEALANTS A. Acoustical Sealant: Manufacturer's standard sealant complying with ASTM C 834 and effective in reducing airborne sound transmission through perimeter joints and openings in building construction as demonstrated by testing representative assemblies according to ASTM E 90. 1. Exposed and Concealed Joints: Nonsag, paintable, nonstaining latex sealant. 2. Concealed Joints: Nondrying, nonhardening, nonskinning, nonstaining, gunnable, synthetic-rubber sealant. 3. Provide sealants that comply with the testing and product requirements of the California Department of Health Services' "Standard Practice for the Testing of Volatile Organic Emissions from Various Sources Using Small-Scale Environmental Chambers." PART 3 - EXECUTION 3.1 EXAMINATION A. Examine substrates, areas, and conditions, including structural framing to which acoustical panel ceilings attach or abut, with Installer present, for compliance with requirements specified in this and other Sections that affect ceiling installation and anchorage and with requirements for installation tolerances and other conditions affecting performance of acoustical panel ceilings. B. Examine acoustical panels before installation. Reject acoustical panels that are wet, moisture damaged, or mold damaged. HERZL CO-LOCATION 09 51 13-5 ACOUSTICAL PANEL CEILINGS
C. Proceed with installation only after unsatisfactory conditions have been corrected. 3.2 PREPARATION A. Measure each ceiling area and establish layout of acoustical units to balance border widths at opposite edges of each ceiling. Avoid use of less-than-half width units at borders, and comply with layout shown on reflected ceiling plans. 3.3 INSTALLATION A. General: Install materials in accordance with ASTM C 636, manufacturer's printed instructions, industry standards applicable to the Work, and requirements of authorities having jurisdiction. B. Arrangement: Arrange acoustical units in manner shown in the Drawings. C. Hangers: Suspend hangers from building structural members and as follows. 1. Install hangers plumb and free from contact with insulation or other objects within ceiling plenum, which are not part of supporting structural or ceiling suspension system. 2. Splay hangers only where required to miss obstructions and offset resulting horizontal force by bracing, counters playing or other equally effective means. 3. Where width of ducts and 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. 4. Do not support ceilings directly from permanent metal forms or floor deck. Fasten hangers to cast-in-place hanger inserts, postinstalled mechanical or adhesive anchors, or power-actuated fasteners that extend through forms into concrete. 5. When steel framing does not permit installation of hanger wires at spacing required, install carrying channels or other supplemental support for attachment of hanger wires. 6. Do not attach hangers to steel deck tabs. 7. Do not attach hangers to steel roof deck. Attach hangers to structural members. 8. Space hangers not more than 48 inches o.c. along each member supported directly from hangers, unless otherwise indicated, leveling to tolerance of 1/8 inch per 12 feet. Provide hangers not more than 8-inches from ends of each member. Provide additional hangers and locate hangers as recommended by ceiling manufacturer to support pendant lighting, if any. 9. Secure wire hangers by looping and wire-tying, either directly to structures or to inserts, eye-screws, or other devices which are secure and appropriate for substrate, and which will not deteriorate or fail due to age, corrosion, or elevated temperatures. Secure wire hangers with not less than three (3) full, closely spaced turns. 10. Size supplemental suspension members and hangers to support ceiling loads within performance limits established by referenced standards and publications. D. Edge Moldings: Install at perimeter of acoustical ceiling area and where necessary to conceal edges of acoustical units. 1. Sealant Bed: Apply continuous ribbon of acoustical sealant, concealed on back of vertical leg before installing moldings. HERZL CO-LOCATION 09 51 13-6 ACOUSTICAL PANEL CEILINGS
2. Attachment: Screw attach moldings to substrate at intervals not more than 16 inches o.c. and not more than 3 inches from ends, leveling with ceiling suspension system to a tolerance of 1/8 inch in 12 feet. Miter corners accurately and connect securely. E. System Runners: Install suspension-system runners so they are square and securely interlocked with one another. Remove and replace dented, bent, or kinked members. F. Ceiling Panels: Install acoustical panels with undamaged edges and fit accurately into suspension-system runners and edge moldings. Scribe and cut panels at borders and penetrations to provide a neat, precise fit. 1. Install square-edged panels with edges fully hidden from view by flanges of suspensionsystem runners and moldings. 2. Paint cut edges of panel remaining exposed after installation; match color of exposed panel surfaces using coating recommended in writing for this purpose by acoustical panel manufacturer. 3.4 ADJUST AND CLEAN A. Clean exposed surfaces of acoustical panel ceilings, including trim, edge moldings, and suspension-system members. Clean exposed surfaces of acoustical ceilings; comply with manufacturer's instructions for cleaning and touch-up of minor finish damage. Remove and replace work, which cannot be successfully cleaned and repaired to permanently eliminate evidence of damage. END OF SECTION HERZL CO-LOCATION 09 51 13-7 ACOUSTICAL PANEL CEILINGS