US NAVAL MEDICAL RESEARCH UNIT NO.3, CAIRO, EGYPT |
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US NAVAL MEDICAL RESEARCH UNIT NO.3, CAIRO, EGYPT Inquiry (采购产品): US NAVAL MEDICAL RESEARCH UNIT NO.3, CAIRO, EGYPT Dear Sir My Company CTC- CONTRACTA ( see Google under Rafik Seefine) is one of the main contractors deals with US NAVAL in Egypt. We have a project required 2240 m2 tiles and accessories + 10% stock of the tiles. Could you please give us your best ex-factory price for this quantity which should comply with the attached pecification. Thanks Rafik Seefine General Manager DIVISION 09 SECTION 09510 ACOUSTICAL CEILINGS SECTION 09510 ACOUSTICAL PANEL CEILINGS PART 1 - GENERAL 1.1 RELATED DOCUMENTS Drawings and general conditions of Contract, including General and Supplementary Conditions and Divisions-1 Specification sections apply to work of this section. 1.2 SUMMARY A. Section Includes: 1. Acoustical ceiling panels. 2. Exposed grid suspension system. 3. Wire hangers, fasteners, main runners, cross tees, and wall angle moldings. 1.3 REFERENCES A. American Society for Testing and Materials (ASTM): 1. ASTM A 1008 Standard Specification for Steel, Sheet, Cold Rolled, Carbon, Structural, High-Strength Low-Alloy and High-Strength Low-Alloy with Improved Formability. 2. ASTM A 641 Standard Specification for Zinc-Coated (Galvanized) Carbon Steel Wire. 3. ASTM A 653 Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) by the Hot-Dip Process. 4. ASTM C 423 Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method. 5. ASTM C 635 Standard Specification for Metal Suspension Systems for Acoustical Tile and Lay-in Panel Ceilings. 6. ASTM C 636 Recommended Practice for Installation of Metal Ceiling Suspension Systems for Acoustical Tile and Lay-in Panels. 7. ASTM E 84 Standard Test Method for Surface Burning Characteristics of Building Materials. 8. ASTM E 1414 Standard Test Method for Airborne Sound Attenuation Between Rooms Sharing a Common Ceiling Plenum. 9. ASTM E 1111 Standard Test Method for Measuring the Interzone Attenuation of Ceilings Systems. 10. ASTM E 1264 Classification for Acoustical Ceiling Products. 11. ASTM E 1477 Standard Test Method for Luminous Reflectance Factor of Acoustical Materials by Use of Integrating-Sphere Reflectometers. 12. ASTM D 3273 Standard Test Method for Resistance to Growth of Mold on the Surface of Interior Coatings in an Environmental Chamber. 13. ASTM E 119 Standard Test Methods for Fire Tests of Building Construction and Material. 1.4 SUBMITTALS A. Product Data: Submit manufacturer's technical data for each type of acoustical ceiling unit and suspension system required. B. Samples: Minimum 6 inch x 6 inch samples of specified acoustical panel; 8 inch long samples of exposed wall molding and suspension system, including main runner and 4 foot cross tees. C. Shop Drawings: Layout and details of acoustical ceilings. Show locations of items which are to be coordinated with, or supported by the ceilings. D. Certifications: Manufacturer's certifications that products comply with specified requirements, including laboratory reports showing compliance with specified tests and standards. For acoustical performance, each carton of material must carry an approved independent laboratory classification of NRC, CAC, and AC. E. If the material supplied by the acoustical subcontractor does not have an Underwriter's Laboratory classification of acoustical performance on every carton, subcontractor shall be required to send material from every production run appearing on the job to an independent or NVLAP approved laboratory for testing, at the architect's or owner's discretion. All products not conforming to manufacturer's current published values must be removed, disposed of and replaced with complying product at the expense of the Contractor performing the work. 1.5 QUALITY ASSURANCE A. Single-Source Responsibility: Provide acoustical panel units and grid components by a single manufacturer. B. Fire Performance Characteristics: Identify acoustical ceiling components with appropriate markings of applicable testing and inspecting organization. 1. Surface Burning Characteristics: As follows, tested per ASTM E 84 and complying with ASTM E 1264 for Class A products. a. Flame Spread: 25 or less b. Smoke Developed: 50 or less C. Handle acoustical ceiling units carefully to avoid chipping edges or damaged units in any way. 1.6 DELIVERY, STORAGE, AND HANDLING A. Deliver acoustical ceiling units to project site in original, unopened packages and store them in a fully enclosed space where they will be protected against damage from moisture, direct sunlight, surface contamination, and other causes. B. Before installing acoustical ceiling units, permit them to reach room temperature and a stabilized moisture content. C. Handle acoustical ceiling units carefully to avoid chipping edges or damaged units in any way. 1.7 PROJECT CONDITIONS A. Space Enclosure: Building areas to receive ceilings shall be free of construction dust and debris. Products with hot dipped galvanized steel, aluminum, or stainless steel suspension systems can be installed up to 120 F (49 C) and in spaces before the building is enclosed, where HVAC systems are cycled or not operating. Cannot be used in exterior applications where standing water is present or where moisture will come in direct contact with the ceiling. 1.8 WARRANTY A. Acoustical Panel: Submit a written warranty executed by the manufacturer, agreeing to repair or replace acoustical panels that fail within the warranty period. Failures include, but are not limited to: 1. Acoustical Panels: Sagging and warping 2. Grid System: Rusting and manufacturer's defects 1.9 MAINTENANCE A. Extra Materials: Deliver extra materials to Owner. Furnish extra materials described below that match products installed. Packaged with protective covering for storage and identified with appropriate labels. 1. Acoustical Ceiling Units: Furnish quality of full-size units equal to 10 Percent of amount installed. Part 2-PRODUCTS 2.1.0 ACOUSTICAL CEILING UNITS A. Acoustical Panels: 1. Surface Texture: Fine 2. Composition: Fiberglass 3. Color: White 4. Size: 48in X 24in X 3/4in 5. Edge Profile: Square Lay-In for interface with 15/16" Exposed Tee. 6. Noise Reduction Coefficient (NRC): ASTM C 423; Classified with UL label on product carton, 0.90. 7. Ceiling Attenuation Class (CAC): ASTM C 1414; Classified with UL label on product carton, Not Applicable 8. Articulation Class (AC): ASTM E 1111; Classified with UL label on product carton 180. 9. Flame Spread: ASTM E 1264; Class A (UL) 10. Light Reflectance (LR): ASTM E 1477; White Panel: Light Reflectance: 0.90. 11. Dimensional Stability - temperatures up to 120 degrees F and high humidity excluding only exterior use, use over standing water, and direct contact with moisture . 2.2.0 SUSPENSION SYSTEMS A. Components: All main beams and cross tees shall be commercial quality hot-dipped galvanized (galvanized steel, aluminum, or stainless steel) as per ASTM A 653. Main beams and cross tees are double-web steel construction with type exposed flange design. Exposed surfaces chemically cleansed, capping pre-finished galvanized steel (aluminum or stainless steel) in baked polyester paint. Main beams and cross tees shall have rotary stitching (exception: extruded aluminum or stainless steel). 1. Structural Classification: ASTM C 635 Intermediate Duty. 2. Color: White and match the actual color of the selected ceiling tile, unless noted otherwise. B. High Humidity Finish: Comply with ASTM C 635 requirements for Coating Classification for Severe Environment Performance where high humidity finishes are indicated. C. Attachment Devices: Size for five times design load indicated in ASTM C 635, Table 1, Direct Hung unless otherwise indicated. D. Wire for Hangers and Ties: ASTM A 641, Class 1 zinc coating, soft temper, pre-stretched, with a yield stress load of at least time three design load, but not less than 12 gauge. E. Edge Moldings and Trim: Metal or extruded aluminum of types and profiles indicated or, if not indicated, manufacturer's standard moldings for edges and penetrations, including light fixtures, that fit type of edge detail and suspension system indicated. |
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