GUIDE SPECIFICATIONS FOR SOUND REFLECTORS
Section 09835 Sound ReflectorsPart 1
General
1.1 Work in this area shall be subject to drawings, general conditions, schedules,
addenda and other contract documents.
1.2 The extent of Acoustical Resources' Sound Reflector Panels are show on the
drawings and in schedules.
1.3 Submit shop drawings and schedules and include appropriate technical
information including test data and maintenance instructions. Submit one fabric selector
cards (if fabric is specified from manufacturer's standard finishes.
1.4 Provide all Sound Reflector Panels from one source.
1.5 Sound Reflector Panels shall be protected from excessive moisture in shipment,
storage and handling. Deliver in unopened bundles and store in a dry place with adequate
air circulation. Installation of Sound Reflector Panels shall not begin until all wet-work
is completed. Building shall be properly closed in and under standard occupancy conditions
(temp. of 60-85%F. and not more than 80% Relative Humidity).
1.6 The contractor shall be responsible for the examination and
acceptance of all surfaces and conditions prior to the Sound Reflector Panels
installation.
1.7 Warranty: Sound Reflector Panels will be warranted to be free from
defects in material and workmanship, under normal service and use, for a period of one
year from the date of installation.
Part 2 Materials
2.1 Auditorium Sound Reflector Panels shall be type _____
(Paraboloid, Radial, Barrel or Flat) series panels as provided by: Acoustical
Resources, Inc. / P.O. Box 200504 / Austin, TX 78720-0504 / Telephone (512) 259-5858 / Fax
(512) 259-5850.
2.2 Materials
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A Reflector
Panels: Standard Auditorium Sound Reflector Panels shall be constructed of
laminate layers of fiberglass mat and woven roving saturated with fire retardant polyester
resin with a top coat of a texture gel-coat molded in one piece special shape. Where Flat
or Radial panels are specified, a 1/4" K-cell™ layer will also be utilized.
Option 1A: The internal concave surface of the reflector shall be lined with 1 1/2"
thick layer of glass fiber board. (Specified_____Shaped Reflector Panel with Internal
Absorber [1A]). B Reflector Suspension
System:
1A. Paraboloid or Barrel Reflector:
Each Paraboloid or Barrel Reflector Panels shall be suspended at a minimum of three
points by cables fastened to 12 ga. trapezes 1 1/2" x 1 1/2" x 1/8" by
custom length with end flanges, per drawings, bolted at trapeze flanges into the reflector
collar sides using color matched, 1/4" oval head bolt, and washer with self locking
nuts (3 per trapeze flange required).
Or:
1B Each Radial or Flat shaped reflector
shall be suspended at a minimum of three points by cables fastened to 12 ga. trapezes 1
1/2" x 1 1/2" x 1/8" by custom length per drawings, E-glassed into the back
of the reflector as noted on dimensioned shop drawings.
All Reflector Panels:
2 Suspension shall be from overhead with steel cable 1/32" (7x19)
with oval compression sleeves to proper length with turnbuckles and barber hauls for final
adjustment. Each cable shall serve as a safety cable capable of holding the entire panel
in a 12 inch drop test.
3 Turnbuckles compressed into cable loops, to provide capability of
adjustment of plus or minus three inches. Cable loop to exceed the maximum extended
turnbuckle length. |
Part 3. Execution
3.01 Preparation Cleaning: Clean Reflectors prior to installation in accordance with
manufacturer's published cleaning recommendations. After installation clean panels to
remove any traces of handling.
3.02 Installation
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A Install suspended reflectors in
accordance with manufacturer's published instructions and the accepted shop drawings.
B Position and install suspension cables (minimum of 3 per reflector)
with compressed oval sleeves to the building structure above. Turnbuckles shall be at mid
point of their adjustable range. Allow 18 inches extra cable at lower end.
C Raise panel into position and fasten to prehung cables. Install lower
compressed sleeves, but DO NOT compress them yet. Use cable clamps to hold in place.
Adjust panel heights so edges are horizontal side to side and then front to back edges to
conform with elevations indicated by drawings.
D After all panels are positioned in this preliminary placement and have
been inspected by the Project Architect and Acoustical Consultant, make final adjustments
as required. This may require the use of barber-haulers to accommodate horizontal
positioning. Once final adjustments are made, with turnbuckles in approximate center
position, then compress oval sleeves for a permanent connection. |
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3.03 Cleanup: Upon completion of final
adjustments, inspect each panel and clean panel surfaces to remove any hand prints or
other marks due to handling during installation.
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SPECS:
SOUND REFLECTORS & SUSPENSION SYSTEM
