specs

Section 09510
Page 3
3.02 INSTALLATION
A. Installation shall be by experienced craftsmen trained to do this type of work. Contractor shall use a laser device
for installation of ceiling grid.
B. Install acoustic treatment after moist materials have been installed. Maintain temperature of not less than 50° F
in spaces having installation of acoustical materials.
C. Perform installation according to the Code of Practices for Acoustical Ceiling System Installation as prepared by
NACA, and Specifications for Acoustical Tile and Lay-in Panel Ceiling System as prepared by AMA.
D. Install hanger wires not over 48" apart above the main beam, unless otherwise indicated or approved.
E. Securely anchor hanger wires to structure above.
F. Secure lower ends of hanger wires to main tees by three twists around itself. Space main tees 2'-0" on centers of
2'x4' grid. Join cross tees to main tee with a positive interlock. At perimeter areas, columns, etc., secure angle
molding to vertical surfaces. Rest tees on angle moldings at walls, columns, etc. Provide hanger wires at four
corners of all light fixtures.
G. Install main runner beams at 4'-0" on center in 2'x4' grid.
H. Install cross tees perpendicular to the main runner beams on both sides of light fixtures and ceiling diffusers.
I. Roll form angle moldings that must follow a curved wall, plane, radius or bend. Notching or cutting the exposed
leg at angle molding to fit radius or bend will not be accepted.
J. Install angle moldings at all points where ceiling abuts a dissimilar material.
K. Unless indicated otherwise, lay out suspension system to the column center lines in areas where columns are free
standing. Lay out system to center lines of rooms working in all four directions in areas that have no free
standing columns. Cut units next to walls shall be more than 1/2 board width and/or length.
L. Install acoustical treatment and suspension system according to instructions and recommendations of the
manufacturer.
M. Suspension system for ceilings shall be erected strong and rigid enough to carry the acoustical tile and support
the light fixtures in a true and level plane.
N. Erect suspension system level, straight, and parallel to walls.
O. Cutting and splicing shall be done in a neat workmanlike manner.
P. Expose no acoustic tile edges.
Q. Cut holes in acoustic units as required for lighting fixtures, air conditioning outlets, sprinkler heads and speakers.
Do not split into two pieces to accommodate fixtures.
3.03 CLEANING AND PROTECTION
A. Refer to Section 01710 - Cleaning.
B. Upon completion of the work, remove damaged and soiled acoustical boards and replace with new matching
material.
C. Protect materials and accessories from damage.
D. Remove excess materials, packaging, and debris from the job site.
3.04 EXTRA STOCK
A. Provide in accordance with Section 01750 - Spare Parts and Maintenance materials.
B. Provide percent (6%) additional ceiling tile material, of each type, identical to that installed for maintenance and
replacement use.
END OF SECTION
NAPA CENTURY CENTER XD 12
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