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Staging Concepts Acoustical Shells
 
         
SECTION 11 61 13
 
         
ACOUSTICAL SHELLS
 
         
 
         
Copyright 2018 - 2022 ARCAT, Inc. - All rights reserved

          ** NOTE TO SPECIFIER ** Staging Concepts; Acoustical Shells.
This section is based on the products of Staging Concepts, which is located at:
7008 Northland Dr. Suite 150
Minneapolis, MN 55428
Toll Free Tel: 800-337-5339
Tel: 763-533-2094
Fax: 763-533-2096
Email: request info
Web: http://www.stagingconcepts.com
[ Click Here ] for additional information.
Staging Concepts offers the finest in portable stage equipment including: performance stage platforms, seating riser platforms, custom applications, acoustical shells, and rigging solutions. Since 1990, Staging Concepts has provided superior product solutions for performing art centers, stadiums, arenas, hotels, convention centers, production companies, educational centers, worships areas, and more.
Our team of project managers, account managers, designers, engineers, and supporting staff continuously consult with designers and architects around the world to ensure that we are on the forefront of technology. And because our in-house design team consists of experienced, knowledgeable, and dedicated engineers, we have the expertise to produce superior products with meticulous craftsmanship. Staging Concepts is committed to engineering dependable and long-lasting products to help elevate any experience.
 
          PART 1GENERAL
 
          1.1SECTION INCLUDES
          ** NOTE TO SPECIFIER ** Delete items below not required for project.
 
          A.Acoustical shells. (Bravado)
 
          B.Acoustical shells. (Aria)
 
          C.Acoustical shells. (Caprice)
 
          D.Acoustical shells. (Crescendo)
 
          1.2RELATED SECTIONS
          ** NOTE TO SPECIFIER ** Delete any sections below not relevant to this project; add others as required.
 
          A.Section 09 90 00 - Painting and Coating
 
          B.Section 11 61 13 - Acoustical Shells. For rigging requirements for the attachment and support of the acoustical shell ceilings.
 
          C.Section 27 41 16 - Integrated Audio-Video Systems and Equipment. For electrical requirements for the lighting components of the acoustical shell ceilings.
 
          1.3REFERENCES
          ** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section.
 
          A.Aluminum Association (AA):
          1.AA-M12C22A41 - Nonspecular as fabricated; etched medium matte; clear.
          2.AA-M12C22A42 - Nonspecular as fabricated; etched medium matte; integral color.
          3.AA-M12C22A44 - Nonspecular as fabricated; etched medium matte; electrolytically deposited color.
 
          B.American Institute of Steel Construction (AISC):
          1.AISC Manual of Steel Construction.
 
          C.American National Standards Institute (ANSI):
          1.ANSI A208.2 - Medium Density Fiberboard (MDF) for Interior Applications.
 
          D.American Plywood Association (APA):
          1.US. Product Standard PS 1 - Structural Plywood.
          2.US. Product Standard PS 1-83
          3.American Hardboard Association (AHA): AHA A135.4-95: Basic Hardboard
 
          E.ASTM International (ASTM):
          1.ASTM A36 - Standard Specification for Structural Steel.
          2.ASTM A283 - Standard Specification for Low and Intermediate Tensile Strength Carbon Steel Plates.
          3.ASTM A307 - Standard Specification for Carbon Steel Bolts and Studs, 60,000 psi Tensile Strength.
          4.ASTM A325 - Standard Specification for High-Strength Bolts for Structural Steel Joints.
          5.ASTM A500 - Standard Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes.
          6.ASTM A501 - Standard Specifications for Hot-Formed Welded and Seamless Carbon Steel Structural Tubing.
          7.ASTM A570 - Standard Specification for Steel, Sheet and Strip, Carbon, Hot-Rolled, Structural Quality.
          8.ASTM A1008/a1008M - Standard Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability, Solution Hardened, and Bake Hardenable.
          9.ASTM B209 - Standard Specification for Aluminum-Alloy Sheet and Plate.
          10.ASTM B221 - Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes.
 
          F.American Welding Society (AWS):
          1.AWS D1.1 - Structural Welding Code-Steel.
          2.AWS D1.3 - Structural Welding Code-Sheet Steel, Second Edition.
 
          G.National Electrical Manufacturers Association (NEMA):
          1.NEMA LD 3 - High-Pressure Decorative Laminates.
 
          1.4SUBMITTALS
 
          A.Submit under provisions of Section 01 30 00 - Administrative Requirements.
 
          B.Shop Drawings: Prepared by Staging Concepts. Include dimensioned plans, sections and elevations showing acoustical shell system layout, component sizes and details of each condition of the shell system.
          1.Include fabrication and installation details.
 
          C.Product Data:
          1.Manufacturer's data sheets on each product to be used.
          2.Preparation instructions and recommendations.
          3.Storage and handling requirements and recommendations.
          4.Installation methods including written plans.
 
          D.Verification Samples: Submit two 6 x 6 in (152 x 152 mm) samples of finished shell core of each type, size, pattern, and color.
 
          E.Manufacturer's Certificates and Test Reports: Certify products meet or exceed specified requirements.
 
          F.Contract Closeout Submittals: Comply with Section 01 70 00 - Execution and Closeout Requirements.
          1.Project record documents
          2.Operating and maintenance manuals.
 
          1.5QUALITY ASSURANCE
 
          A.Manufacturer Qualifications: Company specializing in manufacturing products specified in this section with a minimum five years documented experience.
 
          B.Installer Qualifications: Company specializing in performing Work of this section with minimum three years documented experience with projects of similar scope and complexity.
 
          1.6PRE-INSTALLATION CONFERENCE
 
          A.Convene a conference approximately two weeks before scheduled commencement of the Work.
 
          1.7DELIVERY, STORAGE, AND HANDLING
 
          A.Store products in manufacturer's unopened packaging until ready for installation.
 
          B.Store and handle in strict compliance with manufacturer's written instructions and recommendations.
 
          C.Protect from damage due to weather, excessive temperature, and construction operations.
 
          1.8PROJECT CONDITIONS
 
          A.Maintain environmental conditions (temperature, humidity, and ventilation) within limits recommended by manufacturer for optimum results. Do not install products under environmental conditions outside manufacturer's recommended limits.
 
          1.9WARRANTY
 
          A.Manufacturer's written warranty indicating intent to repair or replace acoustical shell system components that fail in materials or workmanship within five years from the Date of Substantial Completion.
          1.Failures: Defined to include, but not limited to:
          a.Fracturing or breaking of unit components which results from normal wear and tear and normal use other than vandalism.
          b.Delamination or other failures of glue bond of components.
          c.Warping of components not resulting from leaks, flooding, or other uncontrolled moisture or humidity.
          d.Material deterioration and discoloration other than normal wear and weathering conditions.
 
          PART 2PRODUCTS
 
          2.1MANUFACTURERS
 
          A.Acceptable Manufacturer: Staging Concepts, which is located at: 7008 Northland Dr. Suite 150; Minneapolis, MN 55428; Toll Free Tel: 800-337-5339; Tel: 763-533-2094; Fax: 763-533-2096; Email: request info; Web: http://www.stagingconcepts.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 in accordance with provisions of Section 01 60 00 - Product Requirements.
          ** NOTE TO SPECIFIER ** Delete article if not required.
 
          2.2ACOUSTICAL SHELLS (Bravado)
 
          A.Basis of Design: Bravado Acoustical Shell System as manufactured by Staging Concepts.
          1.Stressed-skin laminated composite acoustical shell panel designed to reflect a range of audible frequencies for maximum performance and maximum audible audience range.
 
          B.Materials:
          1.Aluminum Extruded Bars, Profiles and Tubes: ASTM B221/221M, 6005-T5 alloy.
          2.Steel Tube: ASTM A501, hot formed steel tubing.
          3.Cold-Rolled Steel Sheet: ASTM A1008/A1008M, commercial steel, type B.
          4.Medium Density Fiberboard: 3/16 in (4 mm) ANSI A208.2, CARB-2.
          5.High-Pressure Laminate (HPL): NEMA LD 3, grade VGS.
          6.Veneer-Faced Panel Products (MDF Core): AWI premium grade hardboard meets all CARB-2 requirements for formaldehyde emissions.
 
          C.Panel Construction:
          1.Honeycomb Core: 1-1/2 in (38 mm) thick phenolic impregnated honeycomb core material; 3/8-60-60-15 percent open geometric pattern.
          a.Shell walls vertical to panel skins and defined by alternating straight and sine wave layers.
          b.Sine Wave Height: 3/8 in (10 mm).
          2.Bonding Core Material to Panel Faces: Permanently cured polyurethane adhesive.
          a.Foam core materials and contact adhesives are not acceptable.
          3.Face Finish Options:
          a.Painted Medium Density Fiberboard (MDF):
          1)Exposed Faces: 3/16 in (4 mm) thick stressed skin.
          a)Material and finish as indicated, with no exposed fasteners.
          ** NOTE TO SPECIFIER ** Delete painted finish options not required.
          b)Painted Finish: As selected by the Owner.
          c)Painted Finish: As selected by the Architect.
          d)Painted Finish: As selected by the Theatre Consultant.
          b.Vertical Grade High Pressure Laminate (HPL): On 3/16" tempered hardboard
          1)Material and finish as indicated with no exposed fasteners.
          ** NOTE TO SPECIFIER ** Delete color options not required.
          2)Color: As selected by the Owner.
          3)Color: As selected by the Architect.
          4)Color: As selected by the Theatre Consultant.
          c.Wood Veneer: AWI premium grade hardwood veneer on 3/16" MDF core with veneer backer for balance.
          ** NOTE TO SPECIFIER ** Delete wood species options not required.
          1)Wood Species: As selected by the Owner.
          2)Wood Species: As selected by the Architect.
          3)Wood Species: As selected by the Theatre Consultant.
          4)Slip-matched and balance matched within panel face.
          4.Backing: 3/16 in (4 mm) thick stressed skin.
          a.Rear Face: Painted matte black for painted or veneer faced panels.
          b.High Pressure Laminate Panels: Black laminate on the back skin to balance the panel.
          5.Panel Edge Frame: Extruded aluminum edge angle on straight sides of panel.
          6.Base Panel Weight: Approximately 2.7 lbs per sq ft (13.2 kg per sq m).
 
          D.Acoustical Shell Towers:
          1.Tower Frame: Extruded 6005-T5 aluminum alloy vertical tower frames with formed cross brace assemblies.
          2.Stage Tower Transporter: Wheeled with one stroke lifting design using mechanical leverage to lift the tower.
          a.Tri-Casters: 3 in (76 mm) diameter, wheels minimum.
          b.Movable by one person with an additional person for a visual guide.
          3.Tower Size and Configuration: As indicated on the Drawings.
          ** NOTE TO SPECIFIER ** Delete shell tower radius options not required. 5 ft (1524 mm) is standard. Custom radius curves are available upon request.
          4.Shell Tower Panel Radius: 5 ft (1524 mm) standard.
          5.Shell Tower Panel Radius (ft/mm): ________.
          6.Shell Tower Panel Radius: As indicated on the Drawings.
          7.Door and Wing Panel Hardware:
          a.Hinges: Extruded high-strength aluminum 6063T with seamless barrel and integral attachment flange. Molded Delrin bearings for silent operation. No metal-on-metal contact and requiring no replacement parts.
          b.Slide-lock mechanism to lock door and pull handle.
 
          E.Adjustable Acoustical Shell Ceiling: Adjustable-angle acoustical shell ceiling panels supported by integral aluminum support structure suspended from stage rigging truss battens. Stores in fly-loft in vertical position as indicated.
          1.Ceiling Panel Size and Configuration: As indicated on the Drawings.
          ** NOTE TO SPECIFIER ** Delete ceiling panel radius options not required. Custom radius curves available upon request.
          2.Ceiling Panel Radius: 5 ft (1524 mm).
          3.Ceiling Panel Radius: 10 ft (3048 mm).
          4.Ceiling Panel Radius: 20 ft (6096 mm) Standard.
          5.Ceiling Panel Radius (ft/mm): ________.
          ** NOTE TO SPECIFIER ** Delete ceiling panel face finish options not required.
          6.Ceiling Panel Face Finish: Painted MDF.
          7.Ceiling Panel Face Finish: High pressure laminate.
          8.Ceiling Panel Face Finish: Hardwood plywood veneer.
          9.Panel Hinges: Aluminum, with Delrin bearings.
 
          F.Stage Rigging and Battens: Provided by others per specifications.
 
          G.Integrated Lighting: UL approved fixtures located as indicated on the Drawings.
          ** NOTE TO SPECIFIER ** Delete final approved lighting options not required.
          1.Final Approved Lighting: Chosen by the Architect.
          2.Final Approved Lighting: Chosen by the Theatre Consultant.
          3.Final Approved Lighting: Chosen by the Engineer.
          4.Final Approved Lighting: Chosen by the Owner.
          5.Connector Strip: UL listed, attached to ceiling set as indicated on the Drawings.
          6.Circuits wired to location as indicated on the Drawings for connection by others.
          7.Mechanical Tilt Switch: is provided with each light fixture to prevent accidental activation when the ceiling row is in the storage position.
          8.Lighting Options:
          ** NOTE TO SPECIFIER ** Delete lighting options not required. Additional light options are available. Contact the manufacturer for details.
          a.ETC Source Four PAR MCM.
          b.ETC Source Four PAR EA.
          c.ETC Desire D40 LED series.
          d.Color Source PAR LED.
 
          H.Finishes:
          1.Aluminum Framing: Mill finish.
          2.Panel Face: Finish as determined by the Architect.
 
          2.3ACOUSTICAL SHELLS (Aria)
 
          A.Basis of Design Aria Acoustical Shell System as manufactured by Staging Concepts.
          1.Stressed-skin laminated composite acoustical shell panel designed to reflect a range of audible frequencies for maximum performance and maximum audible audience range.
 
          B.Materials:
          1.Aluminum Extruded Bars, Profiles and Tubes: ASTM B 221/221M, 6005-T5 alloy.
          2.Steel Tube: ASTM A501, hot formed steel tubing.
          3.Cold-Rolled Steel Sheet: ASTM 1008/A1008M, commercial steel, type B.
          4.Medium Density Fiberboard: 3/16 in (4 mm) ANSI A208.2, CARB-2.
          5.High-Pressure Laminate (HPL): NEMA LD 3, grade VGS.
          6.Veneer-Faced Panel Products (MDF Core): AWI premium grade hardboard meets all CARB-2 requirements for formaldehyde emissions.
 
          C.Panel Construction:
          1.Ceiling Core: 1-1/2 in (38 mm) thick phenolic impregnated honeycomb core material; 3/8-60-60-15 percent open geometric pattern.
          a.Shell walls vertical to panel skins and defined by alternating straight and sine wave layers.
          b.Sine Wave Height: 3/8 in (10 mm).
          2.Tower Core: 1 in (26 mm) thick phenolic impregnated honeycomb core material; 3/8-60-60-15 percent open geometric pattern.
          a.Shell walls vertical to panel skins and defined by alternating straight and sine wave layers.
          b.Sine Wave Height: 3/8 in (10 mm).
          3.Bonding Core Material to Panel Faces: Permanently cured polyurethane adhesive.
          a.Foam core materials and contact adhesives shall not be permitted.
          4.Face Finish Options:
          a.Painted Medium Density Fiberboard (MDF):
          1)Exposed Faces: 3/16 in (4 mm) thick stressed skin.
          a)Material and finish as indicated, with no exposed fasteners.
          ** NOTE TO SPECIFIER ** Delete painted finish options not required.
          b)Painted Finish: As selected by the Owner.
          c)Painted Finish: As selected by the Architect.
          d)Painted Finish: As selected by the Theatre Consultant.
          b.Vertical Grade High Pressure Laminate (HPL) on 3/16" tempered hardboard:
          1)Material and finish as indicated with no exposed fasteners.
          ** NOTE TO SPECIFIER ** Delete color options not required.
          2)Color: As selected by the Owner.
          3)Color: As selected by the Architect.
          4)Color: As selected by the Theatre Consultant.
          5.Backing: 3/16 in (4 mm) thick stressed skin.
          a.Rear Face: Painted matte black for painted faced panels.
          b.High Pressure Laminate Panels: Black laminate on the back skin to balance the panel.
          6.Panel Edge Frame: Extruded aluminum edge angle on straight sides of panel.
          7.Ceiling Base Panel Weight: Approximately 2.7 lbs per sq ft (13.2 kgs per sq m).
          8.Tower Base Panel Weight: Approximately 2.2 lbs per sq ft (10.8 kgs per sq m).
 
          D.Acoustical Shell Towers:
          1.Tower Frame: Extruded 6005-T5 aluminum alloy vertical tower frames.
          2.Transport and Storage: Tower frames include locking casters. One T-handle is provided to be inserted into the tower base for easy transport.
          3.Shell Tower Size and Configuration:
          ** NOTE TO SPECIFIER ** Delete tower width options not required.
          a.Tower Width: 8 ft ( mm).
          b.Tower Width (ft/mm): ________.
          c.Tower Width: As specified on the Drawings.
          d.Tower Width: As determined by the Architect.
          ** NOTE TO SPECIFIER ** Delete tower height options not required.
          e.Tower Height: 16 ft (4877 mm)
          f.Tower Height: 17 ft (5182 mm)
          g.Tower Height: 18 ft (5486 mm)
          h.Tower Height: 19 ft (5791 mm)
          i.Tower Height: 20 ft (6096 mm).
          j.Tower Height: (ft/mm): ________.
          k.Tower Height: As specified on the Drawings.
          l.Tower Height: As determined by the Architect.
          4.Shell Tower Radius: 10 ft (3048 mm).
          ** NOTE TO SPECIFIER ** Delete tower panel face finish option not required.
          5.Tower Panel Face finish: Painted MDF.
          6.Tower Panel Face finish: High Pressure Laminate
 
          E.Adjustable Acoustical Shell Ceiling: Adjustable-angle acoustical shell ceiling panels supported by integral extruded aluminum truss. Suspended from stage rigging truss battens. Stores in fly-loft in vertical position as indicated.
          ** NOTE TO SPECIFIER ** Delete ceiling panel radius options not required. Custom radius curves available upon request.
          1.Ceiling Panel Radius: 5 ft (1524 mm)
          2.Ceiling Panel Radius: 10 ft (3048 mm)
          3.Ceiling Panel Radius: 20 ft (6096 mm) Standard.
          4.Ceiling Panel Radius (ft/mm): ________.
          ** NOTE TO SPECIFIER ** Delete ceiling panel face finish options not required.
          5.Ceiling Panel Face Finish: Painted MDF.
          6.Ceiling Panel Face Finish: High pressure laminate.
          7.Panel Hinges: Aluminum, with Delrin bearings.
 
          F.Stage Rigging and Battens: Provided by others per specifications.
 
          G.Integrated Lighting: UL-approved fixtures located as indicated on the Drawings.
          ** NOTE TO SPECIFIER ** Delete final approved lighting options not required.
          1.Final Approved Lighting: Chosen by the Architect.
          2.Final Approved Lighting: Chosen by the Theatre Consultant
          3.Final Approved Lighting: Chosen by the Engineer.
          4.Final Approved Lighting: Chosen by the Owner.
          5.Connector Strip: UL listed, attached to ceiling set as indicated on the Drawings.
          6.Circuits wired to location as indicated on the Drawings for connection by others.
          7.Mechanical Tilt Switch: is provided with each light fixture to prevent accidental activation when the ceiling row is in the storage position.
          8.Lighting Options:
          ** NOTE TO SPECIFIER ** Delete lighting options not required. Additional light options are available. Contact the manufacturer for details.
          a.ETC Source Four PAR MCM.
          b.ETC Source Four PAR EA.
          c.ETC Desire D40 LED series.
          d.ETC ColorSource PAR LED.
          ** NOTE TO SPECIFIER ** Delete doors paragraph if not required.
 
          H.Doors: Entrance doors can be provided for access to the stage and equipment.
          1.Hinges: Steel surface-mount piano hinges run the entire height of the door.
          a.Standard Color: Black.
          b.Slide-lock mechanism to lock door and pull handle.
 
          I.Finishes:
          1.Aluminum Framing: Mill finish.
          2.Panel Face: Finish as determined by the Architect.
 
          2.4ACOUSTICAL SHELLS (CAPRICE)
 
          A.Basis of Design Caprice Acoustical Shell System as manufactured by Staging Concepts.
          1.Staging Concepts standard stressed skin laminated composite acoustical shell panel designed to reflect a range of audible frequencies for maximum performance and maximum audible audience range.
 
          B.Materials:
          1.Aluminum Extruded Bars, Profiles, and Tubes: ASTM B221/221M), 6061-T6 alloy.
          2.Steel Tube: ASTM A501, hot formed steel tubing.
          3.Cold-Rolled Steel Sheet: ASTM A1008/A1008M, commercial steel, type B.
          4.Hardboard: AHA A135.4, Class 1 Tempered - formaldehyde free.
          5.High-Pressure Laminate (HPL): NEMA LD 3, Grade VGS.
          6.Veneer-Faced Panel Products (MDF Core): AWI premium grade Hardboard meets CARB-2 requirements for formaldehyde emissions.
 
          C.Panel Construction:
          1.Core: 1-1/2 inch (38 mm) thick phenolic impregnated honeycomb core material, (3/8-60-60-15 percent open geometric pattern.
          a.Shell walls vertical to panel skins and defined by alternating straight and sine wave layers.
          b.Sine Wave Height: 3/8 in (10 mm).
          c.Panel Wall Thickness: To correspond to 60 lbs (22.40 kilogram) kraft.
          1)Bonding Core Material to Panel Faces: Done with permanently cured polyurethane adhesive.
          a)Foam core materials and contact adhesives are not permitted.
          2.Tower Panel Face Skins: Panel stressed skin front and back. Substrate to be tempered hardboard.
          a.Tempered Hardboard: 1/8 inch (3 mm) for 5 ft (1524 mm) wide panels
          b.Tempered Hardboard: 3/16 inch (5 mm) for 6 ft (1829 mm) wide panels.
          3.Ceiling Panel Face Skins: Panel stressed skin front and back. Substrate to be tempered hardboard,
          a.Tempered Hardboard: 1/8 inch (3 mm) for 5 ft (1524 mm) wide panels
          4.Panel Face Finish:
          ** NOTE TO SPECIFIER ** Delete face finish option not required.
          a.Painted. Finish color as selected by Owner, Architect or Consultant.
          b.High Pressure Laminate (HPL): Formica brand grade 20 (VGP) or approved equal, with no exposed fasteners. Color as selected by Owner, Architect or Consultant.
          5.Panel Back Finish:
          a.Painted Panels: Rear face to be painted matte black.
          b.HPL Panels: Black laminate on rear panel face to balance panel.
          6.Panel Edging: Extruded aluminum edge on straight sides of panel.
          7.Base Panel Weight:
          a.Tempered Hardboard: 1/8 inch (3 mm) for 5 ft (1524 mm) wide panels.
          b.Tempered Hardboard: 3/16 inch (5 mm) for 6 ft (1829 mm) wide panels.
          c.Approximately 1.8 lbs per sq ft (8.8 kg per sq m) for 5 ft (1524 mm) wide panels.
          d.Approximately 2.5 lbs per sq ft (12.2 kg per sq m) for 6 ft (1829 mm) wide panels.
 
          D.Acoustical Shell Towers:
          1.Tower Frame: Extruded 6061-T6 aluminum alloy vertical tower frames with welded cross brace assemblies.
          2.Tower Base: Utilize four swivel casters; two of them locking, for independent movement through facility.
          3.Storage: Tower frames fold for a reduced height storage profile. 12 ft (3658 mm) high tower stored position height and overall frame profile allow passage through a standard 36 x 80 inch (5486 x 2032 mm) doorway. 16 ft (4877 mm) high tower stored position height and overall frame profile shall allow passage through a 48 x 114 inch (1219 x 2896 mm) doorway.
          4.Hinges: Allow tower upper section to rotate. Hinges incorporate bronze bushings minimizing wear.
          5.Gas Springs: Utilized to assist operator while moving upper tower section from fully deployed position to storage/transport position.
          6.Shell Tower Size and Configuration: As indicated.
          7.Shell Tower Panel Radius: 10 ft (3048 mm).
 
          E.Adjustable Acoustical Shell Ceiling: Consists of adjustable play angle acoustical cell ceiling panels supported by an integral extruded aluminum frame structure. The shell ceiling set is suspended from stage rigging truss battens. Ceiling to be stored in flyloft in vertical position as indicated.
          1.Ceiling Panel Size and Configuration: As indicated.
          2.Ceiling Panel Radius: 10 ft (3048 mm) Standard. Custom radius curves available upon request.
          3.Ceiling Rotational Hinges: Aluminum, with self-lubricating Delrin bearings.
 
          F.Stage rigging and battens: Rigging and battens supporting acoustical shell ceiling shall be provided by others per specifications.
 
          G.Integrated Lighting: Staging Concepts standard UL-approved fixtures located as indicated. Final approved lighting to be chosen by the Architect, Theatre Consultant or Engineer.
          1.UL listed connector strip attaches to ceiling set as indicated on Drawings; incandescent lighting.
          2.Daisy chain Powercon/DMX cables between fixtures; LED lighting. Provide circuits as indicated, wired to location as indicated, on Drawings for connection by others.
          3.Tilt Switch: Provided with each light fixture; incandescent, or circuit; LED, to prevent accidental activation when ceiling row is in storage position.
          4.Light Fixture Options:
          ** NOTE TO SPECIFIER ** The remaining items are options. Delete options not required. Additional lighting options are available Contact manufacturer for details.
          5.ETC Source Four PAR MCM.
          6.ETC Source Four PAR EA.
          7.ETC Desire D40 LED series.
          8.ETC ColorSource PAR LED.
 
          H.Finishes:
          1.Aluminum Framing: Mill finish.
          2.Steel: Black powder coat.
          3.Painted or High Pressure Laminate face finish as determined by the Architect.
 
          2.5ACOUSTICAL SHELLS (CRESCENDO)
 
          A.Basis of Design Crescendo Acoustical Shell System as manufactured by Staging Concepts. Manufacturer's standard stressed-skin laminated composite acoustical shell panel designed to reflect a range of audible frequencies for maximum performance and maximum audible audience range.
 
          B.Materials:
          1.Aluminum Extruded Bars, Profiles, and Tubes: ASTM B 221 (ASTM B 221M), 6061-T6 alloy.
          2.Steel Tube: ASTM A 501, hot formed steel tubing.
          3.Cold-Rolled Steel Sheet: ASTM A 1008/A 1008M, commercial steel, type B.
          4.Hardboard: AHA A135.4, Class 1 Tempered - formaldehyde free.
          5.High-Pressure Laminate (HPL): NEMA LD 3, Grade VGS.
          6.Veneer-Faced Panel Products (MDF core): AWI Premium Grade Hardboard meets CARB-2 requirements for formaldehyde emissions.
 
          C.Components:
          1.Panel Construction:
          a.Core: 1-1/2 inch thick (38 mm) phenolic impregnated honeycomb core material, (3/8-60-60-15 percent) with open geometric pattern, cell walls vertical to panel skins, defined by alternating straight and sine wave layers.
          1)Height of Sine Wave: 3/8 inches (10 mm).
          2)Panel Wall Thickness: Correspond to 60 pound (22.40 kg) kraft.
          3)Bonding Core Material to Panel Faces: Permanently cured polyurethane adhesive.
          a)Foam Core Materials and Contact Adhesives: Not permitted.
          b.Panel Face Skins: Panel stressed skin front and back.
          1)Substrate: 1/8 inch (3 mm) tempered hardboard.
          c.Panel Face Finish Options:
          ** NOTE TO SPECIFIER ** Delete panel face finish options not required.
          1)Painted:
          a)Color: As selected by Owner, Architect, or Consultant.
          2)High Pressure Laminate (HPL): Formica brand grade 20 (VGP) or approved equal. No exposed fasteners.
          a)Color: A selected by Owner, Architect or Consultant.
          3)Low Pressure Laminate (LPL): Material and finish as indicated. No exposed fasteners.
          a)Color: A selected by Owner, Architect or Consultant.
          4)Wood Veneer: AWI premium grade hardwood plywood veneer. No exposed fasteners.
          a)Species: A selected by Owner, Architect or Consultant.
          5)Wood Veneer: Slip-matched and balance matched within panel face. No exposed fasteners.
          a)Species: A selected by Owner, Architect or Consultant.
          d.Panel Back Finish: Rear face.
          1)Painted or Veneer Faced Panels: Matte black.
          2)HPL or LPL Panels: Black laminate. To balance panels.
          e.Panel Edging: Extruded aluminum edge on straight sides of panel.
          f.Base Panel Weight: Approximately 1.8 psf (8.8 kgs per sq m).
          2.Acoustical Shell Towers:
          a.Vertical Tower Frames with Bolted Cross Bracing: Extruded 6061-T6 aluminum alloy.
          b.Stage Tower Transporter: Wheeled mover. One stroke lifting design using mechanical leverage to lift tower. Wheeled mover incorporates three tri-casters.
          1)Caster Diameter: 3 inches (76 mm) minimum. For movement by one person, with one person as a guide.
          c.Shell Tower Size and Configuration: As indicated.
          d.Shell Tower Panel Radius: 8 foot (2438 mm) standard.
          e.Door and Tower Wing Panel Hardware:
          1)Hinges: Formed steel hinges with pressed in SAE 841 oil-embedded bronze bearings for permanent lubrication.
          a)Steel on Steel Hinges: Not acceptable.
          2)Slide-Lock Mechanism: To lock door and pull handle.
          3.Adjustable Acoustical Shell Ceiling: Adjustable-play angle acoustical cell ceiling panels supported by an integral extruded aluminum frame structure.
          a.Shell Ceiling Set: Suspended from stage rigging truss battens.
          1)Storage: In fly-loft in vertical position as indicated.
          b.Ceiling Panel Size and Configuration: as indicated
          ** NOTE TO SPECIFIER ** Delete radius option not required.
          c.Ceiling Panel Radius: 10 ft (3048 mm) Standard..
          d.Ceiling Panel Radius: __ ft (___ mm). Custom.
          e.Ceiling Rotational Hinges: Aluminum, with self-lubricating Delrin bearings.
          4.Stage Rigging and Battens: Rigging and battens supporting acoustical shell ceiling to be provided by others per specifications.
          5.Integrated Lighting: Staging Concepts standard UL approved fixtures. Locate as indicated.
          a.Final Approved Lighting: To be chosen by the Architect, Theatre Consultant or Engineer.
          b.UL Listed Connector Strip that Attaches to Ceiling: Set as indicated on Drawings; incandescent lighting.
          1)Daisy chain Powercon / DMX cables between fixtures; LED lighting.
          2)Circuits: Provide As indicated. Wire to location as indicated on Drawings for connection by others.
          c.Tilt Switch: Provided with each light fixture (incandescent) or circuit (LED). To prevent accidental activation when ceiling row is in storage position.
          ** NOTE TO SPECIFIER ** Delete lighting options not required. Additional options available.
          d.Lighting: ETC Source Four PAR MCM.
          e.Lighting: ETC Source Four PAR EA.
          f.Lighting: ETC Desire D40 LED series.
          g.Lighting: ETC ColorSource PAR LED.
 
          D.Finishes:
          1.Aluminum Framing: Mill finish.
          2.Steel: Black powder coat.
          3.Panel Face Finish: As determined by the architect.
 
          PART 3EXECUTION
 
          3.1EXAMINATION
 
          A.Do not begin installation until substrates have been properly constructed and prepared.
 
          B.Field verify dimensions for units prior to assembling.
 
          C.If substrate preparation is the responsibility of another installer, notify Architect in writing of unsatisfactory preparation before proceeding.
 
          3.2PREPARATION
 
          A.Clean surfaces thoroughly prior to installation.
 
          B.Prepare surfaces using the methods recommended by the manufacturer for achieving the best result for the substrate under the project conditions.
 
          3.3INSTALLATION
 
          A.Install in accordance with manufacturer's instructions, approved submittals and in proper relationship with adjacent construction.
 
          3.4FIELD QUALITY CONTROL
 
          A.Field Inspection: Coordinate field inspection in accordance with appropriate sections in Division 01.
          ** NOTE TO SPECIFIER ** Include if manufacturer provides field quality control with onsite personnel for instruction or supervision of product installation, application, erection or construction. Delete if not required.
 
          B.Manufacturer's Services: Coordinate manufacturer's services in accordance with appropriate sections in Division 01.
 
          3.5TRAINING AND DEMONSTRATION
 
          A.Train Owner's personnel to assemble, adjust, operate and maintain acoustical shell towers and acoustical shell ceiling units.
 
          3.6CLEANING AND PROTECTION
 
          A.Upon completion of installation, remove surplus materials, rubbish, tools and equipment.
 
          B.Clean products in accordance with the manufacturer's recommendations.
 
          C.Protect installed products until completion of project.
 
          D.Touch-up, repair or replace damaged products before Substantial Completion.
 
         
END OF SECTION