1.5
ENVIRONMENTAL REQUIREMENTS
A uniform temperature of not less than 16 degrees C 60 degrees F nor more
than 29 degrees C 85 degrees F and a relative humidity of not more than 70
percent shall be maintained for 24 hours before, during, and 24 hours after
installation of acoustical units.
1.6
SCHEDULING
Interior finish work such as plastering, concrete and terrazzo work shall
be complete and dry before installation. Mechanical, electrical, and other
work above the ceiling line shall be completed and heating, ventilating,
and air conditioning systems shall be installed and operating in order to
maintain temperature and humidity requirements.
1.7
WARRANTY
Manufacturer's standard performance guarantees or warranties that extend
beyond a one year period shall be provided. Standard performance guarantee
or warranty shall contain an agreement to repair or replace acoustical
panels that fail within the warranty period. Failures include, but are not
limited to, sagging and warping of panels; rusting and manufacturers
defects of grid system.
1.8
EXTRA MATERIALS
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NOTE: In order to assure matching acoustical units
that may become damaged and require spot
replacement, a supply of extra ten percent of units
in the original pattern is recommended in order to
prevent later replacement of the ceiling in an
entire room because of mismatched units. However,
the Government facility should be consulted to
ensure that adequate warehousing and protection is
available for these extra units.
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Spare tiles of each color shall be furnished at the rate of [_____] [5]
tiles for each 1000 tiles installed. Tiles shall be from the same lot as
those installed.
PART 2
PRODUCTS
2.1
ACOUSTICAL UNITS
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NOTE: Color, class, pattern, NRC, LR coefficient,
CAC, and type of acoustical ceiling units must be
shown, as required, on the drawings when more than
one type acoustical unit is specified for a project.
Color and pattern must be coordinated with Section
09915 COLOR SCHEDULE, the drawings, and this section
when more than one type acoustical unit is specified
for a project.
When a specific pattern, as shown in ASTM E 1264 is
required, specify the applicable one and delete
SECTION 09510
Page 10
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