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Wenger Diva Acoustical Shells

Diva acoustical shells provide superior acoustical performance in performance environments. Diva is the beneficiary of decades of pioneering work by Wenger, and we believe Diva’s acoustical qualities are the finest available. Diva’s ability to produce custom visual aesthetics is a Wenger exclusive.

·  Diva’s mobile acoustical shell towers and adjustable acoustical shell ceiling prevent sound from escaping into the fly loft and stage wings, allowing ensemble members to better hear all performers.

·  Diva acoustical shells project sound into the audience with the acoustical impact of significantly increasing the projected sound quality of the ensemble.

·  Diva is engineered and built to a higher standard. The all-aluminum frame provides longer-lasting rigidity and easy operation.

The exclusive Air Transporter included with all Diva acoustical shells moves the acoustical towers on a cushion of air. Set-up time and crew size are slashed, with less wear and tear on the shell itself – and on the stage floor.

We recommend you consult with your Wenger architectural representative, who can be contacted at: Wenger Corporation, Owatonna, MN, Telephone: (800) 493-6437, Email: , Website: www.wengercorp.com.

Founded in 1946, Wenger pioneered modular, relocatable, 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 2004™ 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

Specifier: The specifier may select CSI MasterFormat 95 or MasterFormat 2004 section numbering as required. Bold items require specifier selection. Convert bold to plain text and delete notes after editing.


[SECTION 116113 – ACOUSTICAL SHELLS]

[SECTION 11061 – ACOUSTICAL SHELLS]

PART 1 - GENERAL

1.1  SECTION INCLUDES

  1. Full stage acoustical shell system consisting of mobile acoustical shell towers and adjustable acoustical shell ceiling.

Specifier: Coordinate and 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. Division 01 Section "Special Project Procedures for Music Education Facilities" for coordinating installation of related products.
  2. Division 11 Section "Stage Curtains" for rigging requirements for support of acoustical shell ceiling specified in this Section.
  3. Division 11 Section "Acoustical Clouds" for fixed auditorium acoustical clouds.

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

1.3  REFERENCES

  1. American Society of Civil Engineers (ASCE):
  2. ASCE7 – Minimum Design Loads for Buildings and Other Structures.
  3. Architectural Woodwork Institute (AWI):
  4. Quality Manual, 8th Edition.
  5. ASTM International (ASTM):
  6. ASTMC423 – Standard Test Method for Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method.
  7. ASTM E 413 – Classification for Determination of Sound Transmission Class.
  8. National Electrical Manufacturers Association
  9. NEMALD3-2000 – High Pressure Decorative Laminates.
  10. US Green Building Council (USGBC):
  11. Leadership in Energy and Environmental Design (LEED).

1.4  PERFORMANCE REQUIREMENTS

Specifier: STC performance of the acoustical panel used in acoustical shell system is a measurement of the efficiency of sound reflection provided by the acoustical shell. Value below indicates the performance of the Wenger Diva panel.

  1. Acoustical Panel Sound Transmission: Provide acoustical shell system comprised of acoustical shell panels having the following sound transmission requirements:
  2. Sound Transmission Class (STC): Minimum 50 per ASTM E 413.

1.5  SUBMITTALS

  1. Product Data: Manufacturer’s data sheets for acoustical shell system.
  2. Provide test results by certified independent testing laboratory indicating compliance with requirements of Performance Requirements article.
  3. Shop Drawings: Prepared by manufacturer. Include dimensioned plans and sections, and elevations showing acoustical shell system component sizes, arrangements, and details of each condition of installation. Show fabrication and installation details.
  4. Indicate coordination of with related overhead components, including structural elements, rigging, catwalks, lighting, ductwork, piping, and sprinklers.

Specifier: Retain or add 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 composite wood products and adhesives used in acoustical shells contain no urea formaldehyde.
  3. Samples: For each color and finish for acoustical shell panels.
  4. Maintenance Data: Include manufacturer's cleaning instructions.
  5. Warranty: Submit sample meeting warranty requirements of this Section.

1.6  QUALITY ASSURANCE

  1. Manufacturer Qualifications: Approved manufacturer listed in this section, with minimum [5] years experience in manufacture of acoustical shell components.
  2. Manufacturers seeking approval must submit the following:
  3. Product data, including third-party certified acoustical data and proposed layout for this project.
  4. Samples: Submit samples of finished acoustical shell panels and hinge.
  5. Project references: Minimum of 5 installations not less than [3] 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.

Specifier: Select one of two 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 shell system 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. Sound control door assemblies.
  4. Acoustical room components.
  5. Acoustical shells.
  6. Acoustical clouds.
  7. Folding and portable stages and risers.
  8. Orchestra pit fillers.
  9. Music education storage casework.
  10. Sound conditioned rooms.
  11. Coordination Conference: Prior to fabrication of acoustical shells, conduct conference at project site to verify coordination requirements with work of related trades. Review acoustical shell shop drawings in reference to rigging and to adjacent or integral fire protection, plumbing, HVAC, electrical power, lighting, communication, and structural and architectural features.
  12. Coordinate requirements for structural supports or pipe battens furnished under other sections and used to support acoustical shell system.

1.7  DELIVERY, STORAGE, AND HANDLING

  1. Deliver, store, and handle acoustical shell components in accordance with component 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.

1.8  PROJECT CONDITIONS

  1. Field Measurements: Verify layout and the dimensions of other construction by field measurements before fabrication and indicate measurements on Shop Drawings.

1.9  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 shell system components that fail in materials or workmanship within [5] years from date of Substantial Completion. Failures are defined to include, but are not limited to, the following:
  2. Fracturing or breaking of unit components which results from normal wear and tear and normal use other than vandalism.
  3. Delamination or other failures of glue bond of components.
  4. Warping of components not resulting from leaks, flooding, or other uncontrolled moisture or humidity.
  5. Failure of unit to perform acoustically in accordance with manufacturer's published data.

PART 2 - PRODUCTS

2.1  MANUFACTURERS

  1. Basis of Design: Acoustical shell system design is based upon product of the manufacturer 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 acoustical performance to that provided by the products and configuration indicated].
  2. Wenger Corporation, Owatonna,MN; Telephone:(800)887-7145; Email: ; Website: www.wengercorp.com. Basis of design product: Diva Acoustical Shell.
  3. [Specifier: Insert additional product manufacturers meeting requirements of Quality Assurance Article above, if required for project.]

2.2  MATERIALS

  1. Aluminum Extruded Bars, Profiles, and Tubes: ASTMB221 (ASTMB221M), 6063T alloy.
  2. Veneer-Faced Panel Products (Hardwood Plywood): HPVAHP-1, [urea formaldehyde free].
  3. Hardboard: AHAA135.4, Class1 Tempered, [urea formaldehyde free].
  4. High-Pressure Decorative Laminate: NEMALD3, Grade VGS[, with urea formaldehyde-free adhesive].

2.3  ACOUSTICAL SHELL PANELS

Specifier: Below describes standard Wenger Diva acoustical shell panels. Select panel face. Edit to meet job requirements.

Wenger also provides complete custom design and fabrication of panels, tower, and ceiling system, including custom sizes and radii, acoustical densities and performance, custom accents, inlays, and faux finishes, and multiple storage options. Consult Wenger representative.

  1. Acoustical Shell Panels, General: Manufacturer's standard stressed-skin composite acoustical shell panels, with STC meeting performance requirements, designed to mix and blend sound and reflect a maximum range of audible frequencies to both audience and performers.
  2. Core: 1-1/2 inch (38 mm) thick honeycomb, resin impregnated, bonded to frame and faces with permanent urethane adhesive. Contact cement adhesion does not meet the requirements of this specification.
  3. Face, Wood Veneer-Faced Panel: 1/4 inch (6 mm) thick hardwood plywood-faced medium density fiberboard stressed skin, material and finish as indicated, with no exposed fasteners.
  4. Face, Plastic Laminate-Faced Panel: 3/16 inch (4 mm) thick hardboard stressed skin, material and finish as indicated, with no exposed fasteners.
  5. Face, Painted Panel: 3/16 inch (4 mm) thick hardboard stressed skin, material and finish as indicated, with no exposed fasteners.
  6. Back: 3/16 inch (4 mm) thick hardboard stressed skin, painted black.
  7. Panel Edge Frame: Extruded aluminum edge angle, bottom and top edge.

2.4  STAGE ACOUSTICAL SHELL SYSTEM

  1. Mobile Acoustical Towers: Free-standing, self-supporting, movable towers for stage back and side walls. Towers consist of acoustical shell panels in rigid, diagonally-braced vertical aluminum frame with formed steel connection components, with center panel and two hinged wing panels, in nesting configuration minimizing required storage space. Wing panel on tower equipped with latching hardware and stage access door where indicated. Counterweighted tower base with adjustable front leveling pads concealed by removable access panel.
  2. Tower Size: [As indicated] [12 foot (3660 mm) wide, consisting of one 4 foot (1220 mm) center panel and two 4 foot (1220 mm) wing panels] [10 foot (3050 mm) wide, consisting of one 4 foot (1220 mm) center panel and two 3 foot (914 mm) wing panels].
  3. Tower Height: [As indicated].
  4. Tower Panel Radius: [As indicated] [5 foot (1.52 m)] [10 foot (3.05 m)] [20 foot (6.09m)].

Specifier: Select finish requirements below. In addition to standard selections, a wide range of custom veneers and laminates are available. Consult Wenger representative.

  1. Tower Panel Face Finish:
  2. Hardwood plywood veneer: AWI Premium grade, [White oak, plain sliced] [Red oak, plain sliced] [White birch, plain sliced] [Maple, plain sliced] [Cherry, plain sliced] [Specifier insert veneer species], slip-matched, and balance matched within panel face.

1)  Transparent finish, [stain color as selected by Architect] [stain color: insert>].

  1. Plastic laminate: [Color as selected by Architect] [Color: insert>].
  2. Painted hardboard: [Color as selected by Architect] [Color: insert>].
  3. Trim strips between Panels: [Painted black] [Painted color as selected by Architect].
  4. Door and Wing Panel Hardware:
  5. Hinges: Aluminum, 6063T, with nylon insert and self-lubricating bearings, designed for silent operation, with no metal-on-metal contact, and requiring no replacement parts.
  6. Slide-lock mechanism and pull handle.
  7. Stage Tower Air Transporter: Electrically-operated handcart with tubular steel handbar, 2 rubber-wheeled casters, and blower unit, configured to fit mobile stage tower base and enable movement of towers through pneumatic cushion supporting most of tower's weight. 110V 15A.
  8. Adjustable Acoustical Shell Ceiling: Acoustical shell ceiling consisting of adjustable-angle acoustical shell ceiling panels supported by integral truss, suspended from stage rigging pipe batten, and stored in fly-loft in vertical position.
  9. Ceiling Panel Size and Configuration: As indicated.
  10. Ceiling Panel Radius: [As indicated] [5 foot (1.52 m)] [10 foot (3.05 m)] [20 foot (6.09m)].

Specifier: Select finish requirements below. In addition to standard selections, a wide range of custom veneers and laminates are available. Consult Wenger representative.

  1. Ceiling Panel Face Finish:
  2. Hardwood plywood veneer: AWI Premium grade, [White oak, plain sliced] [Red oak, plain sliced] [White birch, plain sliced] [Maple, plain sliced] [Cherry, plain sliced] [Specifier insert veneer species], slip-matched and balance matched within panel face.

1)  Transparent finish; [stain color as selected by Architect] [stain color: insert>].

  1. Plastic laminate: [Color as selected by Architect] [Color: insert>].
  2. Painted hardboard: [Color as selected by Architect] [Color: insert>].
  3. Panel Hinges: Aluminum, with self-lubricating bearings.

Specifier: Wenger acoustical shell ceilings may incorporate integrated lighting option. Consult your Wenger representative. Coordinate with electrical engineer and theater rigging consultant.