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SECTION 09 80 00
ACOUSTICAL TREATMENT
 
 
Copyright 2004 - 2017 ARCAT, Inc. - All rights reserved
** NOTE TO SPECIFIER ** Eckel Noise Control Panel Systems for control of reverberation and background noise.
.
This section is based on products manufactured by Eckel Industries, Inc., Acoustic Division, which is located at:
155 Fawcett Street
Cambridge, MA 02138-9990
Tel: (617)491-3221
Fax: (617) 547-2171
E-mail: eckel@eckelusa.com
www.eckelusa.com
.
Noise control panel systems are high performance sound-absorbing panels that can be spot located on walls or ceilings to achieve effective noise control. Because they are independent panels, they can be installed without disturbing existing lighting or HVAC diffusers. Attractive, fire resistant, durable, and easily cleaned, they are ideal for correcting noise problems in gymnasiums, swimming pools, auditoriums and theaters and similar facilities. They also are appropriate for industrial noise control use in water and wastewater treatment facilities and power plants as well as manufacturing facilities. Engineering support services are also available including acoustical analysis of building spaces. Room reverberation time calculations are offered as a service to architects and engineers utilizing our computer model room noise analysis program. Eckel can measure before and after room reverberation time and noise levels in a full range of frequencies from 125Hz to 8,000Hz when needed for correction of problems in existing facilities. Complete turnkey design, layout, engineering and installation are available.
 
PART 1 GENERAL
 
1.1
SECTION INCLUDES
A.
Sound absorptive ceiling panels.
B.
Sound absorptive wall panels.
C.
Sound absorptive lay-in ceiling panels.
D.
Sound absorptive panels for correctional institutions.
E.
Miscellaneous accessories.
1.2
RELATED SECTIONS
A.
Section 09 51 00 - Acoustical Ceilings: Conventional grid-supported acoustic ceilings.
B.
Section 23 36 00 - Air Terminal Units.
C.
Section 26 51 00 - Interior Lighting.
1.3
REFERENCES
A.
ASTM C 423 - Standard Test Method for Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method; 2000.
B.
ASTM E 84 - Standard Test Method for Surface Burning Characteristics of Building Materials; 2000.
C.
ASTM E 795 - Standard Practices for Mounting Test Specimens during Sound Absorption Tests; 2000.
1.4
SUBMITTALS
A.
[ Product Data ]: Submit manufacturer's recommended installation instructions and documentation certifying conformance with specified performance requirements.
B.
Shop Drawings: Submit drawings indicating layout for all areas to receive work of this section, including locations of light fixtures, ceiling diffusers, and grilles. Indicate pattern of units, cut units, details, and coordination requirements for work of other sections.
C.
Samples: Submit for approval two samples of sound absorptive panel and suspension systems, not less than 12 inches (305 mm) by 18 inches (457 mm) in size and demonstrating colors, textures, and finishes that will be provided in the finished work.
1.5
QUALITY ASSURANCE
A.
Installer Qualifications: Installers shall have demonstrated experience in assembly and installation of products similar to those specified in this section.
1.6
DELIVERY, STORAGE, AND HANDLING
A.
Deliver materials in manufacturer's original unopened and undamaged packages with labels legible and intact.
B.
Store materials in unopened packages in a manner that will avoid damage from the environment and from construction operations.
C.
Handle in accordance with manufacturer's instructions.
1.7
ENVIRONMENTAL REQUIREMENTS
A.
Do not begin installation of acoustic panels until building has been enclosed and environmental conditions approximate interior conditions that will prevail when building is occupied.
PART 2 PRODUCTS
 
2.1
MANUFACTURERS
A.
Acceptable Manufacturer: Eckel Industries, Inc., Acoustic Div., which is located at: 155 Fawcett St.; Cambridge, MA 02138-9990; Tel: 617-491-3221; Fax: 617-547-2171; Email: request info (eckel@eckelUSA.com); Web: www.eckelUSA.com
 
** NOTE TO SPECIFIER ** Delete one of the following two paragraphs; coordinate with requirements of Division 1 section on product options and substitutions.
 
B.
Substitutions: Not permitted.
C.
Requests for substitutions will be considered.
 
** NOTE TO SPECIFIER ** The following paragraphs describe several types of acoustic panel systems designed to provide effective control of reverberation and background noise in any architectural application from a small classroom or gym to a large coliseum, water treatment facility or industrial plant.
 
2.2
ACOUSTIC PANELS
 
** NOTE TO SPECIFIER ** These acoustic panels are durable perforated steel surfaced panels for general use on walls and ceilings in different . See below for panels for correctional applications.
 
A.
Acoustic Panels: Eckel Eckoustic Functional Panels.
 
** NOTE TO SPECIFIER ** Delete all but one of the following three coverage paragraphs.
 
1.
Coverage:
a.
Total Area: Not less than 30 percent of gross ceiling area.
b.
Total Area: As indicated on drawings.
c.
Total Area: __________.
2.
Panel Thickness: 2.75 inches (70 mm) "V" ridged facing.
3.
Width: 30 inches (760 mm).
 
** NOTE TO SPECIFIER ** Select one of the following paragraph and delete the paragraph(s) not required.
 
4.
Length:
a.
5 foot (1525 mm)
b.
6 foot (1830 mm)
c.
8 foot (2440 mm
d.
10 foot (3050 mm)
e.
Custom: _______ lengths as indicated on the drawings.
B.
Panel Performance:
1.
Sound Absorption: Provide panels that are certified to meet the following minimum sound absorption for a 30 inch by 120 inch (760 by 3050 mm) panel, encapsulated in a 2.0 mil (0.05 mm) flame guard polyethylene, when tested in accordance with ASTM C 423 and E 795:
a.
125 Hz: 6.2 sabins.
b.
250 Hz: 20.5 sabins.
c.
500 Hz: 35.2 sabins.
d.
1000 Hz: 34.5 sabins.
e.
2000 Hz: 31.5 sabins.
f.
4000 Hz: 33.1 sabins.
g.
NRC: 0.99, minimum.
2.
Fire: Provide panels that demonstrate the following performance when tested in accordance with ASTM E 84:
a.
Flame Spread: 10 maximum.
b.
Smoke Density: 10 maximum.
 
** NOTE TO SPECIFIER ** Delete one of the following two panel construction descriptions. The first is for steel panels; the second is for aluminum panels. Aluminum is recommended for high corrosion and wet areas.
 
C.
Panel Construction: Steel.
1.
Facings: 22 gage (0.76 mm) electrogalvanized steel sheet, perforated with 3/32 inch (2 mm) holes on 3/16 inch (4.8 mm) staggered centers; V-ridged on 6 inch (150 mm) centers to a depth of 2-3/4 inches (70 mm).
2.
Framing: 20 gage (0.9 mm) electrogalvanized steel, channel shaped; supply two 1/4-20 inch threaded inserts for each framing member for attachment of panel mounting brackets.
3.
Brackets: Provide four 11 gage (3 mm) steel brackets per unit for attachment to walls and ceilings, providing 4 inches (100 mm) of clearance between back of panel and mounting surface.
4.
Finish: Polyurethane enamel paint; factory applied.
 
** NOTE TO SPECIFIER ** Delete one of the following two paragraphs. White is the standard color.
 
5.
Color: White.
6.
Color: As selected by Architect.
D.
Panel Construction: Aluminum.
1.
Facings: 0.032 inch (0.8 mm) aluminum sheet, perforated with 3/32 inch (2 mm) holes on 3/16 inch (4.8 mm) staggered centers; V-ridged on 6-inch (150 mm) centers to a depth of 2-3/4 inches (70 mm).
2.
Framing: 0.063 inch (1.6 mm) aluminum, channel shaped; supply two 1/4-20 inch threaded inserts for each framing member for attachment of panel mounting brackets.
3.
Brackets: Provide four 11 gage (3 mm) Type 316 stainless steel brackets per unit for attachment to walls and ceilings, providing 4 inches (100 mm) of clearance between back of panel and mounting surface.
4.
Finish: Polyurethane enamel paint; factory applied.
 
** NOTE TO SPECIFIER ** Delete one of the following two paragraphs. White is the standard color.
 
5.
Color: White.
6.
Color: As selected by Architect.
E.
Acoustical Insulation: 2 inch (50 mm) thick, fine fibered, fibrous glass, having a density of not less than 1.5 pounds per cubic foot (24 kg/cubic m), encapsulated in a 1.5 to 2 mil (0.04 to 0.05 mm) flame guard polyethylene.
F.
Anchors and Fasteners: 1/4 inch (6 mm)-20 by 1 inch (25 mm) long bolts to attach mounting brackets to the panels, cadmium plated for steel panels, stainless steel for aluminum panels; corrosion-resistant anchors for fastening brackets to substrate, as recommended by panel manufacturer and approved by Architect.
2.3
FLAT FACE ACOUSTIC PANELS
 
** NOTE TO SPECIFIER ** These acoustic panels have a decorative faux-cloth finish and are for general use on walls and ceilings of new and existing facilities.
 
A.
Acoustic Panels: Eckel Flat Face Functional Panels.
 
** NOTE TO SPECIFIER ** Delete all but one of the following three coverage paragraphs.
 
1.
Coverage:
a.
Total Area: Not less than 30 percent of gross ceiling area.
b.
Total Area: As indicated on drawings.
c.
Total Area: __________.
2.
Panel Thickness: 2 inches (508 mm).
3.
Width: 30 inches (760 mm).
 
** NOTE TO SPECIFIER ** Select one of the following paragraph and delete the paragraph(s) not required.
 
4.
Length:
a.
5 foot (1525 mm)
b.
6 foot (1830 mm)
c.
8 foot (2440 mm
d.
10 foot (3050 mm)
e.
Custom: _______ lengths as indicated on the drawings.
B.
Panel Performance:
1.
Sound Absorption: Provide panels that are certified to meet the following minimum sound absorption for a 30 inch by 72 inch (760 by 1829 mm) panel when tested in accordance with ASTM C 423 and E 795:
a.
Surface Mounted:
1)
250 Hz: 11.1 sabins.
2)
500 Hz: 18.7 sabins.
3)
1000 Hz: 19.0 sabins.
4)
2000 Hz: 17.7 sabins.
5)
4000 Hz: 17.4 sabins.
6)
NRC: 0.99, minimum.
b.
4 inch (102 mm) Mounted:
1)
250 Hz: 12.7 sabins.
2)
500 Hz: 22.4 sabins.
3)
1000 Hz: 21.8 sabins.
4)
2000 Hz: 18.8 sabins.
5)
4000 Hz: 20.7 sabins.
6)
NRC: 0.99, minimum.
2.
Fire: Provide panels that demonstrate the following performance when tested in accordance with ASTM E 84:
a.
Flame Spread: 10 maximum.
b.
Smoke Density: 10 maximum.
C.
Panel Construction: Steel.
1.
Facings: 22 gage (0.76 mm) electrogalvanized steel sheet, perforated with 3/32 inch (2 mm) holes on 3/16 inch (4.8 mm) staggered centers.
2.
Framing: 20 gage (0.9 mm) electrogalvanized steel, channel shaped; supply two 1/4-20 inch threaded inserts for each framing member for attachment of panel mounting brackets.
3.
Brackets: Provide four 11 gage (3 mm) steel brackets per unit for attachment to walls and ceilings, providing 4 inches (100 mm) of clearance between back of panel and mounting surface.
4.
Finish: Polyurethane enamel paint; factory applied.
 
** NOTE TO SPECIFIER ** Delete one of the following two paragraphs. White is the standard color.
 
5.
Color: White.
6.
Color: As selected by Architect.
D.
Acoustical Insulation: 2 inch (50 mm) thick, fine fibered, fibrous glass, having a density of not less than 1.5 pounds per cubic foot (24 kg/cubic m).
E.
Anchors and Fasteners: 1/4 inch (6 mm)-20 by 1 inch (25 mm) long bolts to attach mounting brackets to the panels, cadmium plated; corrosion-resistant anchors for fastening brackets to substrate, as recommended by panel manufacturer and approved by Architect.
2.4
LAY-IN ACOUSTIC PANELS
 
** NOTE TO SPECIFIER ** These acoustic panels are for upgrading the performance and appearance of new and existing conventional lay-in ceilings.
 
A.
Acoustic Panels: Eckel Acoustic Lay-In Panels.
 
** NOTE TO SPECIFIER ** Delete all but one of the following three paragraphs.
 
1.
Total Area: Not less than 30 percent of gross ceiling area.
2.
Total Area: As indicated on drawings.
3.
Total Area: __________.
4.
Thickness: 2 inches.
5.
Width: 24 inches (610 mm). Fits standard 2 foot (610 mm) by 2 foot (610 mm) suspended ceiling grid.
 
** NOTE TO SPECIFIER ** Select the required length from the following two paragraphs. Delete the paragraph not required.
 
6.
Length: 24 inches (610 mm) Fits standard 2 foot (610 mm) by 2 foot (610 mm) suspended ceiling grid.
7.
Length: 48 inches (1219 mm) Fits standard 2 foot (610 mm) by 4 foot (1219 mm) suspended ceiling grid.
B.
Panel Performance:
1.
Sound Absorption: Provide panels that are certified to meet the following minimum sound absorption for a 24 inch by 48 inch (610 by 1219 mm) panel when tested in accordance with ASTM C 423 and E 795:
a.
125 Hz: 10.08 sabins.
b.
250 Hz: 7.92 sabins.
c.
500 Hz: 8.08 sabins.
d.
1000 Hz: 9.28 sabins.
e.
2000 Hz: 9.52 sabins.
f.
4000 Hz: 10.64 sabins.
g.
NRC: 1.10, minimum.
2.
Fire: Provide panels that demonstrate the following performance when tested in accordance with ASTM E 84:
a.
Flame Spread: 10 maximum.
b.
Smoke Density: 10 maximum.
C.
Panel Construction: Steel.
1.
Facings: 22 gage (0.076 mm) electrogalvanized steel sheet, perforated with an open area of 23 percent.
2.
Finish: Polyurethane enamel paint; factory applied.
 
** NOTE TO SPECIFIER ** Delete one of the following two paragraphs. White is the standard color.
 
3.
Color: White.
4.
Color: As selected by Architect.
D.
Acoustical Insulation: 2 inch (50 mm) thick, fine fibered, fibrous glass, having a density of not less than 1.5 pounds per cubic foot (24 kg/cubic m), encapsulated in a 1.5 mil (0.04 mm) flame guard polyethylene.
2.5
DELTA EDGE SURFACE MOUNTED ACOUSTIC PANELS
 
** NOTE TO SPECIFIER ** These acoustic panels are for general use on finished surfaces of walls and ceilings without disturbing existing lighting, ventilation and sprinklers. Delete this entire article if surface mounted panels are not required.
 
A.
Acoustic Panels: Eckel Delta Acoustical Panels.
 
** NOTE TO SPECIFIER ** Delete all but one of the following three paragraphs.
 
1.
Total Area: Not less than 30 percent of gross ceiling area.
2.
Total Area: As indicated on drawings.
3.
Total Area: __________.
 
** NOTE TO SPECIFIER ** Select the size required from one of the following two paragraphs. Delete the paragraph not required.
 
4.
Panel Size:
a.
24 inches by 42 inches (610 mm by 1219 mm).
b.
24 inches by 88 inches (610 mm by 2235 mm).
B.
Panel Performance:
1.
Sound Absorption: Provide panels that are certified to meet the following minimum sound absorption for a 24 inches by 88 inches (610 mm by 2235 mm) panel when tested in accordance with ASTM C 423 and E 795:
a.
Flush Mount:
1)
125 Hz: 4.52 sabins.
2)
250 Hz: 11.55 sabins.
3)
500 Hz: 11.65 sabins.
4)
1000 Hz: 18.32 sabins.
5)
2000 Hz: 13.19 sabins.
6)
4000 Hz: 9.02 sabins.
7)
NRC: 1.05 minimum.
b.
4 inch (102 mm) Space Mount:
1)
125 Hz: 5.27 sabins.
2)
250 Hz: 12.69 sabins.
3)
500 Hz: 21.71 sabins.
4)
1000 Hz: 18.77 sabins.
5)
2000 Hz: 16.08 sabins.
6)
4000 Hz: 10.93 sabins.
7)
NRC: 1.15 minimum.
2.
Fire: Provide panels that demonstrate the following performance when tested in accordance with ASTM E 84:
a.
Flame Spread: 10 maximum.
b.
Smoke Density: 10 maximum.
 
** NOTE TO SPECIFIER ** Delete one of the following two panel construction descriptions. The first is for steel panels; the second is for aluminum panels. Aluminum is recommended for high corrosion and wet areas.
 
C.
Panel Construction: Steel.
1.
Facings: 22 gage (0.76 mm) electrogalvanized steel sheet, perforated with 3/32 inch (2 mm) holes on 3/16 inch (4.8 mm) staggered centers. Sides and end of panel with 135 degree returned side and edge construction to create an "unrevealed edge"
2.
Framing: 20 gage (0.9 mm) electrogalvanized steel, angle mounting assembly pre punched and secured with #10 sheet metal screws for flush mount.
3.
Brackets: Provide two 20 gauge steel angle mounting brackets (Standard for flush mount) per unit for attachment to walls and ceilings or 4 gauge (13 mm) steel brackets for 4 inch (102 mm) space mount.
4.
Finish: Polyurethane enamel paint; factory applied.
 
** NOTE TO SPECIFIER ** Delete one of the following two paragraphs. White is the standard color.
 
5.
Color: White.
6.
Color: As selected by Architect.
D.
Panel Construction: Aluminum.
1.
Facings: 0.032 inch ((0.8 mm) aluminum sheet, perforated with 3/32 inch (2 mm) holes on 3/16 inch (4.8 mm) staggered centers. Sides and end of panels with 135 degree returned side and edge construction to create an "unrevealed edge"
2.
Framing: 0.063 inch (1.6 mm) aluminum, angle mounting assembly pre punched and secured with # 10 sheet metal screws for flush mount.
3.
Brackets: Provide two 20 gauge steel angle mounting brackets (Standard for flush mount) per unit for attachment to walls and ceilings or 4 gauge (13 mm) steel brackets for 4 inch (102 mm) space mount.
4.
Finish: Polyurethane enamel paint; factory applied.
 
** NOTE TO SPECIFIER ** Delete one of the following two paragraphs. White is the standard color.
 
5.
Color: White.
6.
Color: As selected by Architect.
E.
Acoustical Insulation: 2 inch (50 mm) thick, fine fibered, fibrous glass, having a density of not less than 1.5 pounds per cubic foot (24 kg/cubic m), encapsulated in a 1.5 mil (0.04 mm) flame guard polyethylene.
F.
Anchors and Fasteners: #10-3/4 inch self tapping sheet metal screws to attach mounting angles to the panels, cadmium plated for steel panels, stainless steel for aluminum panels; corrosion-resistant anchors for fastening brackets to substrate, as recommended by panel manufacturer and approved by Architect.
2.6
CORRECTIONAL PANELS
 
** NOTE TO SPECIFIER ** Correctional Panels are designed for use in correctional facilities. Delete this entire article if correctional panels are not required. Select one of the following two types of panels and delete the one not required.
 
A.
Acoustical Panels for Correctional Applications: Eckel Eckoustic Correctional Panels Type I; solid channel end panels with capped riveted ends.
1.
Total Area: __________.
2.
Width: 18 inches (457 mm).
3.
Length: As indicated on drawings, up to 96 inches (2440 mm).
B.
Acoustical Panels for Correctional Applications: Eckel Eckoustic Correctional Panels Type II; formed end style panels with formed perforated ends.
1.
Thickness: 2.125 inches (54 mm).
2.
Width: 18 inches (457 mm).
 
** NOTE TO SPECIFIER ** Select the size required from one of the following two paragraphs. Delete the paragraph not required.
 
3.
Length: 42 inches (1067 mm).
4.
Length: 90 inches (2286 mm).
C.
Panel Performance:
1.
Sound Absorption: Provide correctional panels that are certified to meet the following minimum sound absorption for a 18 inch by 96 inch (460 by 2440 mm) panel, encapsulated in a 2 mil (0.05 mm) flame guard polyethylene, when tested in accordance with ASTM C 423.
2.
125 Hz: 4.6 sabins.
3.
250 Hz: 9.6 sabins.
4.
500 Hz: 15.2 sabins.
5.
1000 Hz: 14.5 sabins.
6.
2000 Hz: 12.6 sabins.
7.
4000 Hz: 11.1 sabins.
8.
NRC: N/A.
D.
Panel Facings: 16 gage (1.5 mm) zinc coated steel, perforated with 3/32 inch (2 mm) holes on 3/16 inch (4.8 mm) staggered centers.
1.
Finish: Polyurethane enamel paint; factory applied.
 
** NOTE TO SPECIFIER ** Delete one of the following two paragraphs. White is the standard color.
 
2.
Color: White.
3.
Color: As selected by Architect.
E.
Brackets: Provide four 11 gage (3 mm) mounting angles with each panel, with 1/4 inch (6 mm) -20 blind threaded inserts for each angle.
F.
Anchors and Fasteners: Attach panels to mounting angles with 1/4 inch (6 mm)-20 button head socket security cap screws made of 18-8 stainless steel.
PART 3 EXECUTION
 
3.1
EXAMINATION
A.
Examine surfaces to receive work of this section. Do not begin installation until unsatisfactory conditions have been corrected.
3.2
INSTALLATION
A.
Install panels on walls and ceilings in locations and in patterns indicated on the drawings.
B.
Install each unit as indicated on Architect's drawings and in accordance with manufacturer's printed instructions, using approved anchors and fasteners.
3.3
ADJUST AND CLEAN
A.
After installation of acoustic panels, clean all dirty or discolored surfaces, using cleaning materials and methods acceptable to manufacturer. Replace damaged components as directed by the Architect.
B.
Remove debris caused by work of this section on a daily basis. At completion of acoustic panel installation, remove all crates, cartons, packages, and debris from the project site.
END OF SECTION