Scope shall consist of furnishing all labor, taxes, materials, equipment, services, permits; incidental and implied; to install a complete and warranted system as designed per the attached drawings and Specifications. Please refer to the attachment named Exhibit 1 2.01 PERFORMANCE REQUIREMENTS A. Surface Burning Characteristics: Each acoustical ceiling shall be Class A rated, with flame spread index of 25 or less, smoke developed index of 50 or less, when tested in accordance with ASTM E84. 2.02 ACOUSTICAL PANELS A. Acoustical Panels - General: ASTM E1264, Class A. 1. VOC Content: Third-party tested and certified, according to California Department of Public Health (CDPH) Standard Method (CA Section 01350). 2. Antibacterial/Antimicrobial Treatment: Provide acoustical panels that have been factorytreated by manufacturer for resistance to bacteria, mold, mildew, and fungus. 3. Humidity/Sag Treatment: Provide acoustical panels that have been factory-treated by manufacturer for humidity and sag-resistance. 4. Formaldehyde-Free: Provide acoustical panels with formaldhyde-free compositon. B. Acoustical Panels ACP: Painted mineral fiber, with the following characteristics: 1. Classification: ASTM E1264 Type III. a. Form: 2, water felted. 2. Size: 24 by 24 inches. 3. Thickness: 3/4 inch. 4. Light Reflectance: Not less than 0.82, determined in accordance with ASTM E1264. 5. NRC Range: Not less than 0.70, determined in accordance with ASTM E1264. 6. Panel Edge: Square. 7. Color: White. 8. Suspension System: Exposed grid. 9. Products: a. Armstrong World Industries, Inc; School Zone Fine Fissured - Item #1713. b. CertainTeed Ceilings, Inc; Fine Fissured High NRC - Item #HHF-457 HNRCX. c. USG Corporation; Radar High-NRC Acoustical Panels - Item #22421. d. Substitutions: See Section 016000 - Product Requirements. 2.03 SUSPENSION SYSTEM(S) A. Metal Suspension Systems - General: Complying with ASTM C635/C635M; die cut and interlocking components, with perimeter moldings, hold down clips, stabilizer bars, clips, and splices as required. 1. Materials: a. Steel Grid: ASTM A653/A653M, G30 coating, unless otherwise indicated. 2. Cross Tee/Main Runner Connection: Override (stepped). 3. Main Runner End Coupling: Bayonet ("stab") type; knuckle type is not acceptable. B. Exposed Suspension System- for replacement of components of existing to remain exposed suspension system too damaged to reuse: Hot-dipped galvanized steel grid and cap. 1. Structural Classification: Intermediate-duty, when tested in accordance with ASTM C635/C635M. 2. Profile: Tee; 15/16 inch face width. 3. Finish: Baked enamel. 4. Products: a. Armstrong World Industries, Inc; Prelude XL 15/16". b. CertainTeed Ceilings, Inc; 15/16" EZ Stab Classic System. c. USG Corporation; Donn Brand DX/DXL 15/16 inch Acoustical Suspension System. d. Substitutions: See Section 016000 - Product Requirements
