specs

SECTION 09510
ACOUSTICAL CEILINGS
PART 1 - GENERAL
1.01 SCOPE
A. Provide Acoustical Ceiling work as indicated by the Contract Documents.
B. Work, items and requirements specified elsewhere that apply and/or relate to this Section include:
1. Gypsum Wallboard - Section 09250
2. Building Insulation - Section 07210
3. Painting - Section 09900
4. Electrical - Division 16.
1.02 STANDARDS AND QUALITY
A. Meet requirements and recommendations of applicable portions of the Standards listed.
1. Underwriters Laboratories, Inc. UL
2. Acoustical and Insulation Materials Assoc. AIMA
3. Suspended Ceiling Manufacturers Assoc. SCMA
1.03 QUALITY ASSURANCE
A. Applicator Qualifications: Applicator shall have satisfactorily installed accepted suspension system and
acoustical units on at least three other projects of equal scope.
B. Design Criteria:
1. Deflection: Suspension system components, hangers and fastening devices shall support light fixtures,
ceiling grilles, and acoustical units without deflecting more than 1/360 of the span.
2. Test for deflection in accordance with methods and procedures prescribed by ASTM C636-92 with latest
revisions.
3. Reduce hanger spacing as required to satisfy design criteria.
4. Increase hanger sizes as required to satisfy design criteria.
5. Increase members and components of system, as required, to satisfy design criteria.
C. Fire Safety Requirements:
1. Maximum flame spread index of acoustical materials: 25.
2. Flame spread index shall be listed by UL Building Materials List or determined by ASTM E84-95b.
D. Allowable tolerance of finished acoustical ceiling system: Level within 1/8" of 12'.
E. To insure proper interface and color match, all acoustical panel units and grid components shall be produced or
supplied by a single manufacturer. Materials supplied by more than one manufacturer are not permissible.
F. Suspended Ceiling Requirements for Seismic Projects:
1. Installation must confirm to CISCA recommendations for areas subject to severe seismic activity.
2. Minimum 2” wall moulding
3. Grid must be attached to two adjacent walls opposite walls must have ¾” clearance
4. Ends of main beams and cross tees must be tired together to prevent their spreading
5. Perimeter support wires
6. Heavy-duty grid system
7. Ceiling areas over 1,000 SF must have horizontal restraint wire or rigid bracing
8. Ceiling areas over 2,000 SF must have seismic separation Joints or full height partitions
9. Ceilings without rigid brace must have 2” oversized trim rings for sprinklers and other pentrations
10. Chnaged in ceiling plane must have positive bracing
11. Cable trays and electrical conduits must be independently supported and braced
12. Suspended ceiling will be subject to special inspection.
1.04 SUBMITTALS
A. Refer and comply with Section 01340 - Submittals.
B. Submit a sample of each color of ceiling tiles and each color of suspension systems that are being proposed for
the installation to the Architect for approval.
1.05 DELIVERY AND STORAGE
A. Schedule deliveries to avoid delays in the work.
B. Deliver and store materials in their original unopened protective containers.
NAPA CENTURY CENTER XD 12
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