Wenger Motorized Acoustical Banners

Wenger offers decades of experience tailoring acoustical treatments to solve specific room acoustical control needs. The shape of your room, its floor and wall treatments, and its cubic volume play a role in how sound reacts within the space. Extending this expertise, Wenger's acoustics experts now provide an adjustable acoustical solution for spaces with varying activities and demands. This specification section specifies Wenger's acoustically-engineered motorized acoustical banners that serve both sound absorbing and decorative functions and allow facility managers to modify a space's acoustical properties on a moment's notice.

Wenger offers and recommends a free of charge full acoustical analysis to determine correct product selection, product quantities, and correct placements. Configuration of acoustical room components, including motorized acoustical banners, are included in the recommendations.

We recommend you consult with your Wenger architectural representative, who can be contacted through: Wenger Corporation, Owatonna, MN, (800)887-7145, Email: , Website: www.wengercorp.com.

Founded in 1946, Wenger pioneered modular, re-locatable, sound-isolated music practice rooms. Wenger has a proud history of manufacturing the finest products for Elementary and Secondary Music Education and Performance. Over the years, Wenger has expanded this tradition of quality by developing product solutions for the unique requirements of Colleges & Universities, Performing Arts Centers, Theatre, Places of Worship, Athletic Facilities, Rental and Event companies, as well as City, State and Federal Government organizations.

Today, Wenger is a global supplier of products with a reputation for durability and versatility providing customers with real value and proven return on their investment. Wenger also takes pride in offering technical support and expert consultation for new construction and renovation projects, as well as existing facilities.

Wenger products appear in the following CSI MasterFormat 2014™ Sections:

Section 01 35 13 - Special Project Procedures for Music Education Facilities

Section 08 34 72 - Sound Control Door Assemblies

Section 09 84 00 - Acoustic Room Components

Section 10 50 00 - Storage Specialties

Section 11 61 13 - Acoustical Shells

Section 11 61 15 - Acoustical Clouds

Section 11 61 23 - Folding and Portable Stages

Section 11 61 25 - Orchestra Pit Filler

Section 12 35 51 - Music Education Storage Casework

Section 13 21 48 - Sound-Conditioned Rooms

This document Copyright © 2014 Wenger Corporation.


SECTION 098433 – SOUND-ABSORBING WALL-MOUNTED BANNERS

PART 1 - GENERAL

1.1  SECTION INCLUDES

  1. [Wall-] [and] [Ceiling-] mounted acoustical banners, motorized.

Specifier: Edit paragraphs below to correspond to project. Retain references to sections specifying work that might be expected to appear under work of this section. Delete Article if not required.

1.2  RELATED SECTIONS

  1. Section 013513 "Special Project Procedures for Music Education Facilities" for coordinating installation of related products.

Specifier: Coordinate load-bearing capacity of ceiling grid specified in another section with requirements for support of ceiling-supported acoustical room components specified in this Section.

  1. Section 095113 "Acoustical Panel Ceilings" for general purpose acoustical ceiling panels.
  2. Section 098400 "Acoustical Room Components" for engineered sound-absorbing and sound-diffusing panels specified using one-third octave band center frequencies.
  3. Section 098433 "Sound-Absorbing Wall Units" for general purpose sound absorptive panels specified using a single average NRC value.
  4. Section 098436 "Sound-Absorbing Ceiling Units" for general purpose sound absorptive panels specified using a single average NRC value.
  5. Section 116113 "Acoustical Shells" for fixed and movable sound-reflective components for controlling and projecting performer sound to audiences.
  6. Section 116115 "Acoustical Clouds" for sound-reflective components installed within performance spaces.
  7. Division 26 electrical sections for conduit, power wiring, control wiring, and rough-in boxes for motorized acoustical banners.

Specifier: Retain references below remaining in section following editing. For projects of limited scope, delete Article.

1.3  REFERENCES

  1. ASTM International (ASTM):
  2. ASTMC423-Standard Test Method for Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method.
  3. ASTME84-Standard Test Method for Surface Burning Characteristics of Building Materials.
  4. ASTM E 795-Practices for Mounting Test Specimens during Sound Absorption Tests.
  5. Underwriters Laboratories, Inc.:
  6. UL723 – Test For Surface Burning Characteristics of Building Materials.

1.4  ACTION SUBMITTALS

  1. Product Data: Manufacturer’s data sheets, installation instructions, and maintenance recommendations for each type of acoustical banner.
  2. Include data indicating coefficients of absorption and Sabines per unit for each type of banner used in the analysis and proposed design layout.

Specifier: Retain applicable paragraphs below for projects intended to be LEED-certified. Add additional requirements that apply. Verify credits required and availability of materials from manufacturer(s). Refer to USGBC LEED Reference Guide for detailed information.

  1. LEED Submittals:
  2. Credit EQ4.4: Manufacturer’s certificate indicating that materials used in acoustical banners contain no urea formaldehyde.
  3. Shop Drawings: Prepared by manufacturer. Include elevations showing acoustical banner sizes, arrangements, and details of each condition of installation. Show fabrication and installation details. Include the following:
  4. Variations from basis of design unit sizes and layout shown on drawings, based upon performance of proposed products.
  5. Locations of seams.
  6. Location of wiring connections.
  7. Wiring diagrams.
  8. Anchorage details, including connection to supporting structure for suspended units.
  9. Provide acoustic engineering calculation results and a graphic representation of each room's acoustical properties prior to and after installation of acoustical banners.
  10. Base calculations on proposed supplier's specific products.
  11. Indicate absorption and reverberation time properties complying with design requirements, utilizing octave band frequencies from 125 Hz to 4,000 Hz, based upon the Fitzroy formulas.
  12. Show room response at 125 to 4000 Hz octave bands empty, untreated and occupied, and treated and occupied.
  13. Calculations based upon NRC data alone do not meet the requirements of this specification.
  14. Samples: For each color and finish for each type of acoustical banner:
  15. For fabric selection, from manufacturer's full range.

1.5  INFORMATIONAL SUBMITTALS

  1. Product Test Reports: Indicating compliance of products with requirements, from a qualified independent testing agency.
  2. Warranty: Submit sample meeting warranty requirements of this Section.

1.6  CLOSEOUT SUBMITTALS

  1. Maintenance Data: Include fabric manufacturer's cleaning and stain-removal instructions.

1.7  QUALITY ASSURANCE

  1. Manufacturer Qualifications: Approved manufacturer listed in this section, with minimum five years' experience in manufacture of acoustical room components.
  2. Manufacturers seeking approval must submit the following:
  3. Acoustical analysis and proposed layout for this project as described in Submittals Article above.
  4. Samples of each component of product specified, when requested by Architect.
  5. Project references: Minimum of five installations not less than five years old, with owner contact information.
  6. Sample warranty.
  7. Submit substitution request not less than 15 days prior to bid date.
  8. Approval will be indicated by issuance of written Addendum.
  9. Approved manufacturers must meet separate requirements of Submittals Article.
  10. Fire-Test-Response Characteristics per ASTME84 or ULStandard723: Flame spread index: 25 or less; Smoke developed index: 450 or less.

1.8  COORDINATION

  1. Coordinate layout and installation of acoustical banners with adjacent construction, including wall-mounted and ceiling-mounted items.
  2. Coordinate requirements for blocking required in frame construction to receive acoustical banners.

1.9  DELIVERY, STORAGE, AND HANDLING

  1. Deliver, store, and handle acoustical banners in accordance with manufacturers' recommendations. Ship to jobsite only after roughing-in, painting work, and other related finish work has been completed and installation areas are ready to accept units and recommended temperature and humidity levels will be maintained during the remainder of construction.

1.10  WARRANTY

Specifier: The “special warranty” is a warranty provided by the manufacturer to the building owner. The warranty terms below are available from Wenger Corp. Verify that other manufacturers listed or seeking approval furnish warranty meeting requirements. Durability is a key aspect of Wenger’s product value for Owners. The available warranty reflects Wenger’s high confidence in the performance of their products.

  1. Special Warranty: Manufacturer's written warranty indicating manufacturer’s intent to repair or replace acoustical banners that fail in materials or workmanship within three years from date of installation. Failures are defined to include, but are not limited to, the following:
  2. Deterioration of fabric under conditions of normal use and exposure.
  3. Functional failure of operating mechanisms and controls.
  4. Failure of unit to perform acoustically in accordance with manufacturer's published data.

PART 2 - PRODUCTS

2.1  MANUFACTURERS

  1. Basis of Design: Acoustical banner design is based upon products of the manufacturer named below. Provide basis of design product [or comparable products of a listed manufacturer approved by the Architect prior to bid which will provide identical room acoustic performance to that provided by the products and configuration indicated on the Drawings].
  2. WengerCorporation,Owatonna,MN;(800)887-7145;Email:; Website: www.wengercorp.com.
  3. [Specifier: Insert additional product manufacturers meeting requirements of Quality Assurance Article above, if required for project.]

Specifier: Select one of two "Source Limitations" paragraphs that follow. Edit subparagraphs under second paragraph below to correspond to project. Wenger recommends requiring contractor to coordinate procurement of these related items in order to meet design requirements and avoid installation conflicts.

  1. Source Limitations: Obtain acoustical banners through one source from a single approved manufacturer.
  2. Source Limitations: Obtain the following products through one source from a single approved manufacturer[ in accordance with Division 01 Section "Special Project Procedures for Music Education Facilities"]:
  3. Acoustical banners.
  4. Sound control door assemblies.
  5. Acoustical room components.
  6. Acoustical shells.
  7. Acoustical clouds.
  8. Folding and portable stages and risers.
  9. Orchestra pit fillers.
  10. Music education storage casework.
  11. Sound conditioned rooms.

2.2  PERFORMANCE REQUIREMENTS

Specifier: Retain and edit below for projects where noise reduction and reverberation time for each listed space have been engineered to accompany a design layout of acoustic banners specified in Part 2. Copy and repeat subparagraphs below for each additional space receiving acoustic banners.

Consult Wenger representative for assistance in establishing appropriate performance requirements for each space as well as proper instrumentation requirements for measurement.

  1. Airborne Noise Reduction: Provide acoustical banners in layout designed by computer simulation based on Fitzroy formulas to provide the following sound reduction:
  2. Auditorium: <insert> dB +/- 0.5dB.
  3. <insert name of space>: <insert> dB +/- 0.5dB.
  4. Reverberation Time: Provide acoustical absorber and diffuser panels in layout designed by computer simulation based on Fitzroy formulas to provide the following reverberation times:
  5. Auditorium: <insert> +/- 0.2 seconds.
  6. <insert name of space>: <insert> +/- 0.2 seconds.

Specifier: Retain sound absorption coefficient from four listed below based upon Project requirements.

  1. Sound Absorption Coefficient, ASTMC423, one-third Octave Band Center Frequency: For banners of the following construction, spaced 9.5 inches (241 mm) from wall, with 3 inches (76mm) between banner layers.

200 250 500 1000 2000 4000

Synthetic velour, double 0.35 0.59 0.70 0.87 0.80 0.80

Wool serge, double 0.40 0.59 0.69 0.87 0.84 0.84

Synthetic velour, single, over acoustical blanket 0.38 0.65 0.82 0.87 0.82 0.87

Wool serge, single, over acoustical blanket 0.41 0.48 0.70 0.87 0.82 0.87

  1. Fire-Test-Response Characteristics per ASTME84 or ULStandard723: Flame spread index: 25 or less; Smoke developed index: 450 or less.
  2. Flame Resistance: Provide fabric components complying with NFPA701.
  3. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA70, by a qualified testing agency.

Specifier: Add requirements for engineered seismic attachment of acoustical banners if required for Project.

2.3  ACOUSTICAL BANNERS, MOTORIZED

  1. General: Manufacturer's standard sound absorbing acoustical banner units consisting of case, fabric banner, ball bearing rollers, motor, controls, mounting accessories, and other components necessary for a complete installation.Provide units meeting performance requirements and requirements of this Article that are listed and labeled as an assembly by UL or another testing and inspecting agency acceptable to authorities having jurisdiction.

Specifier: Wenger Acoustical Banners are designed to tailor the reverberation and loudness of a room. Acoustical banners are engineered to absorb sound across a broader frequency range. Standard (60 inch) width and custom widths up to 10 feet are available. Indicate banner sizes and locations on Drawings.

  1. Sound-Absorbing Acoustical Banners: Acoustical double-layer fabric banners with adjustable layer spacing and adjustable wall spacing, with motorized deployment and retraction, concealed when retracted within wall-mounted housing. Provide means of securing fabric allowing fabric to be easily removed for maintenance.
  2. Basis of Design Product: Wenger Corporation, Motorized Acoustical Banners.
  3. Banner Size: Size indicated on Drawings.

Specifier: Retain selected fabric option in "Banner Acoustical Fabric" and corresponding fabric description paragraphs below. Coordinate with corresponding coefficient in "Sound Absorption Coefficient" paragraph in Performance Requirements paragraph. If more than one fabric type or fabric color is required, note or schedule locations on Drawings.

  1. Banner Acoustical Fabric: [Synthetic velour, double layer] [Wool serge, double layer] [Synthetic velour, single layer, over acoustical blanket] [Wool serge, single layer, over acoustical blanket].
  2. Fabric Material:
  3. Synthetic Velour: 22 oz. (746 g/sq. m) medium weight polyester synthetic velour, inherently flame retardant, wrinkle-resistant and moisture resistant, in double layer.
  4. Wool Serge: 30 oz. /sq. yd. (1017 g/sq. m) matte finish, no nap direction, inherently flame retardant, in double layer.
  5. Acoustical Blanket: High-loft synthetic fibrous insulation blanket consisting of polypropylene microfibers with spun bonded scrim surface.
  6. Colors/Patterns: [As indicated on Drawings] [As selected by Architect from manufacturer's full line] [Specifier insert color selection].
  7. Housing: Manufacturer's standard enclosure consisting of aluminum extrusion frame with aluminum sheet infill panels.

Specifier: Retain "Exposed Housing Closures and End Caps" paragraph below for exposed housing installations and select appropriate option.

  1. Housing Closures and End Caps: [Aluminum, mill finish] [Aluminum, powder coated to match Architect's sample] [Laminated wood as selected by Architect from manufacturer's standard veneers and stains] [Insert housing finish description].
  2. Mounting: [Exposed wall-mounted] [Exposed ceiling-mounted] [Above ceiling-mounted].
  3. Operator and Controls:
  4. Motor in Roller: Instant-reversing asynchronous motor of size and capacity recommended by acoustical banner manufacturer; with integrated motor controls, brakes, and encoders, permanently lubricated ball bearings, thermal-overload protection, limit switches, and positive-stop action.
  5. Power Supply: 120VAC/60 Hz.

Specifier: Retain option in "Controls" paragraph below if Owner requests ability to modify acoustical banner limit settings.