| Specifications: RESILIENTLY SUSPENDED GYPSUM CEILING
PART 1 - GENERAL
1.01 Work Included
A. Furnish all labor, materials, tools and equipment and
perform all operations necessary for the installation of resiliently suspended ceilings
shown on contract drawings.
1.02 System Description
A. Resiliently suspended gypsum ceilings, where shown on
drawings, shall be isolated from the building structure in order to increase their ability
to reduce sound transmission.
1.03 quality Assurance
A. The resilient isolation hangers and perimeter isolation
material shall be designed and fabricated at the facilities of a nationally recognized
manufacturer having a minimum of five years' experience in furnishing similar
materials.
PART 2 - PRODUCTS
2.01 Materials
A. The sound isolation materials specified herein shall be
designed and manufactured by Kinetics Noise Control, Inc., Dublin, Ohio.
B. Ceilings shall be supported by resilient isolation
hangers. Kinetics Model ICC (concrete construction) or ICW (wood frame construction).
Resilient hangers shall have sufficient capacity to sustain continuously applied ceiling
weight without settling.
C. The isolation hanger shall be a combination high
deflection steel spring in series with a resilient, molded neoprene noise and vibration
isolation pad. Both members shall be incorporated into a stamped steel hanger assembly
which resiliently supports the isolated ceiling.
D. The hanger assembly bracket shall be designed to allow 15
degrees of vertical alignment of the suspension member without making metal-to-metal
contact between the suspension and hanger assembly members. The isolation hanger
deflection shall be selected by the manufacturer to provide a maximum natural frequency of
4.4 Hz. The steel spring element shall have a minimum Kx to Ky of 1, at its 1" rated
deflection.
The hanger bracket shall be designed with an integral spring preload
bracket selection to minimize change in elevation once a load is applied to the hanger.
The hanger shall include a leveling bolt with channel attachment clip for ease of
installation and height adjustment.
E. Where horizontal joints abut nonisolated building
components, separate the isolated ceiling with Kinetics Model SRP isolation material by
first bonding it to the nonisolated component, then constructing the isolated gypsum
wallboard to it. Do not nail or screw through the isolation material. Upon completion of
the installation, seal the SRP with nonhardening caulking compound.
Junction isolation material shall be 3/8" thick.
PART 3 - EXECUTION
3.01 Installation
A. The installation of all sound isolation materials
specified herein, including those installed under other sections of the specifications,
shall be in accordance with the procedures submitted by the isolation material
manufacturer and as approved by the architect.
B. All sound isolation materials and building components
supported by isolation materials shall be free from rigid contact with any part of the
building structure.
C. Isolation hangers shall be spaced a maximum 4'0" O.C.
each way. Isolation hangers at the perimeter of the ceiling should be placed no more than
16" from the edge of the ceiling.
D. The ceiling grid consists of commercially available cold
rolled 16 ga. 1-1/2" x 1/2" channel running on one axis (with the floor joists
in wood frame construction) and 20 ga. 7/8" commercially available drywall furring
channel on the other. Isolators include their own grid clip.
GYPSUM WALLBOARD OR MASONRY SOUND ISOLATION
PARTITION
PART 1 GENERAL
1.01 Work Included
A. Furnish all labor, materials, tools and equipment and
perform all operations necessary for the complete installation of (gypsum wallboard,
masonry) partitions resiliently supported as shown on contract drawings.
1.02 System Description
A. Partitions resting on resilient material, where shown on
drawings, shall be isolated from the building structure in order to increase their ability
to reduce sound transmission. Partitions shall not be directly connected to building
components, but shall be completely supported by resilient material.
1.03 Quality Assurance
The special resiliently supported partition materials shall be
designed and fabricated at the facilities of a nationally recognized manufacturer having a
minimum of five years experience in furnishing similar materials.
PART 2 - PRODUCTS
2.01 Materials
A. The sound isolation materials specified herein shall be
designed and manufactured by Kinetics Noise Control Inc., Dublin, Ohio.
B. Gypsum Wallboard partitions shall be constructed on
resilient isolation pads, Kinetics Model KSM. Kinetics Isolation grommets and 5/16"
threaded anchors will be used to resiliently attach the base channel into the floor
through each KSM pad. The 1/4" gap between the gypsum board and the floor shall be
caulked with nonhardening sealant. Partition isolation pads shall consist of 1"
thick, 12 PCF precompressed molded fiber glass pads, encased in a water-resistant
elastomeric coating. Material shall be supplied in pads 3" x 3" for nominal
4" partitions, 5" x 5" for 6" partitions and larger for thicker
partitions.
Masonry partitions shall be supported on a continuous
resilient material, Kinetics Model NAFP10. Isolation material shall consist of 7/16"
thick 10 pcf molded fiber glass pads encased in a water resistant elastomeric coating
bonded to 1/4" hardboard. The material shall be supplied in the same width as the
partition.
C. Sway braces shall be located to provide intermittent
support of the isolated wall. Spacing shall be based on the partition type and seismic
zone.
Seismic Zone |
Masonry Wall |
Gypsum Wallboard |
0 |
8' O.C. vert. & horiz. |
8' O.C. vert. and 7' O.C. horiz. |
1 |
7' O.C. vert. & horiz. |
8' O.C. vert. and 5' O.C. horiz. |
2A & 2B |
6' O.C. vert. & horiz. |
8' O.C. vert. and 4' O.C. horiz. |
3 |
5' O.C. vert. & horiz. |
8' O.C. vert. and 3' O.C. horiz. |
4 |
4' O.C. vert. & horiz. |
8' O.C. vert. and 2'-6" O.C. horiz. |
Masonry wall sway braces shall consist of fail safe, double acting
neoprene elements incorporated into a 3/16" thick steel bracket with holes for
bolting into the non isolated structure. A threaded anchor component is embedded into the
masonry wall joint.
Gypsum wallboard sway braces shall consist of fail-safe,
double-acting neoprene elements incorporated into an 11 ga. steel bracket for bolting to
the nonisolated building components and with a threaded rod for attachment to gypsum
wallboard studs. Sway braces shall be selected to resist potential lateral forces.
D. Support the top of the partition with Kinetics Model
IPRB-6 isolated wall brackets installed at a maximum spacing of 36" O.C. (gypsum
Wallboard) or 24" O.C. (Masonry) on each side of the partition.
Wall brackets shall consist of 1-5/8" x 1-5/8" x 16 ga.
formed steel angle, punched for attachment to the structure, and with a 1/2" thick
SCE 41 closed-cell expanded elastomer noise isolation pad bonded to the vertical leg.
E. To prevent short-circuiting, the header shall be held down
from the structure above by a minimum of 1/2" and a maximum of 3/4". The space
shall be filled with Kinetics Model KAF joint isolation material. Seal the exposed
material with non-hardening caulking.
PART 3 - EXECUTION
3.01 Installation
A. The installation of all sound isolation materials
specified herein, including those installed under other sections of specifications, shall
be in accordance with the procedures submitted by the isolation material manufacturer and
as approved by the architect. |