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WENGER CORP.
[11 61 23][11062] FOLDING AND PORTABLE STAGES AND RISERS
Page 1 of 7 PS-0144 Revision 1
[SECTION 11 61 23 – FOLDING AND PORTABLE STAGES AND RISERS]
[SECTION 11062 – FOLDING AND PORTABLE STAGES AND RISERS]
GENERAL
SECTION INCLUDES
Portable stage platforms.
Portable seating-platform risers.
RELATED SECTIONS
Division 01 Section "Special Project Procedures for Music Education Facilities" for coordinating
installation of related products.
Division 01 Section "Sustainable Design Requirements" for related LEED general requirements.
REFERENCES
American Hardboard Association
1.
AHA A135.4: Basic Hardboard.
American Society of Civil Engineers (ASCE):
2.
ASCE 7 – Minimum Design Loads for Buildings and Other Structures.
ASTM International
3.
ASTM B 209: Specification for Aluminum and Aluminum-Alloy Sheet and Plate.
4.
ASTM B 221: Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire,
Profiles, and Tubes.
5.
ASTM B 429: Specification for Aluminum-Alloy Extruded Structural Pipe and Tube.
NFPA International
6.
NFPA 701: Fire Tests for Flame-Resistant Textiles and Films.
U.S. Department of Commerce, National Institute of Standards and Technology
7.
DOC PS 1: U.S. Product Standard for Construction and Industrial Plywood.
US Green Building Council (USGBC):
8.
Leadership in Energy and Environmental Design (LEED) Green Building Rating System.
PERFORMANCE REQUIREMENTS
Structural Performance:
9.
Stage Platforms and Risers: Uniform Live Load: 125 lbf/sq. ft. (6 kN/sq. m).
10.
Treads of Stairs: Uniform Load: 100 lbf/sq. ft. (4.79 kN/sq. m), and concentrated load:
300 lbf (1.33 kN) on area of 4 sq. in. (25.8 sq. cm), whichever produces the greater
stress.
11.
Guard Top Rail and Handrail Concentrated Load: 200 lbf (0.89 kN) applied at any point
in any direction.
12.
Guard Top Rail Uniform Load: 50 lbf/ft. (0.73 kN/m) applied in any direction.
13.
Intermediate Rails, Panels, and Baluster Concentrated Load: 50 lbf (0.22 kN) applied to
1 sq. ft. (0.093 sq. m) area.
SUBMITTALS
Product Data: Manufacturer’s data sheets and installation instructions.
WENGER CORP.
[11 61 23][11062] FOLDING AND PORTABLE STAGES AND RISERS
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Manufacturer Product Certificates: For stage-drapery fabric and carpet.
LEED Submittals:
14.
Credit EQ 4.4: Manufacturer’s certificate indicating that composite wood products and
adhesives used contain no urea formaldehyde.
Shop Drawings: Prepared by manufacturer. Include elevations showing components and details of
each condition of installation. Show fabrication and installation details and relationship to
adjacent work. Include plans, elevations, sections, and details, and relationship to other work.
15.
[Indicate seismic bracing meeting project seismic design requirements.]
Samples: For stage drapery fabric.
Operation and Maintenance Data.
Warranty: Submit sample meeting warranty requirements of this Section.
QUALITY ASSURANCE
Manufacturer Qualifications: Approved manufacturer listed in this section, with minimum [5] years
experience in manufacture of stages, platforms, and risers in use in similar environments.
Obtain [stage platforms] [and] [risers] through one source from a single approved
manufacturer.
16.
Approval of Comparable Products: Submit the following in accordance with project
substitution requirements, within time period allowed for substitution review:
a.
Product data.
b.
Samples of each component of product specified.
c.
Project references: Minimum of 5 installations not less than [5] years old, with
owner contact information.
d.
List of successful installations of similar products available for evaluation by
Architect.
e.
Sample warranty.
17.
Submit substitution request not less than 15 days prior to bid date. Substitutions
following award of contract are not allowed except as stipulated in Division 01 General
Requirements.
18.
Approved manufacturers must meet separate requirements of Submittals Article.
Fire-Test-Response Characteristics:
Provide products meeting the following fire-test-response
characteristics.
19.
Stage Drapery Fabric: Flame resistant per NFPA 701.
20.
Carpet: Critical radiant flux classification of not less than 0.45 W/sq. cm per
ASTM E 648.
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"]:
21.
Sound control door assemblies.
22.
Acoustical room components.
23.
Acoustical shells.
24.
Folding and portable stages and risers.
25.
Orchestra pit fillers.
26.
Music education storage casework.
27.
Sound conditioned rooms.
DELIVERY, STORAGE, AND HANDLING
Deliver, store, and handle [stage platforms] [and] [risers] in accordance with manufacturer’s
recommendations. Ship to jobsite only after roughing-in, painting work, and other related finish
WENGER CORP.
[11 61 23][11062] FOLDING AND PORTABLE STAGES AND RISERS
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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.
WARRANTY
Special Warranty: Manufacturer's written warranty indicating manufacturer’s intent to repair or
replace components of [stage platforms] [and] [risers] 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:
28.
Fracturing or breaking of unit components which results from normal wear and tear and
normal use other than vandalism.
29.
Delamination or other failures of glue bond of components.
30.
Warping of components not resulting from leaks, flooding, or other uncontrolled moisture
or humidity.
PRODUCTS
MANUFACTURERS
Basis of Design: [Stage platform] [and] [riser] design is based upon products of the
manufacturer listed below. Provide basis of design product or approved comparable product.
Comply with requirements of Part 1 Quality Assurance Article for approval of products not
named below.
Wenger Corporation, Owatonna, MN; Telephone: (800)887-7145; Email:
info@wenger.com;
Website: www.wengercorp.com.
31.
Basis of design product: [Versalite Staging System] [and] [Versalite Seated
Riser System].
32.
[Specifier: Insert additional product manufacturers meeting requirements of
Quality Assurance Article above, if required for project.]
MATERIALS
Aluminum:
33.
34.
35.
Comply with the following:
Sheet and Plate: ASTM B 209 (ASTM B 209M).
Extruded Bars, Profiles, and Tubes: ASTM B 221 (ASTM B 221M).
Extruded Structural Pipe and Tube: ASTM B 429.
Materials Meeting Sustainable Design Requirements:
36.
Provide [stage platforms] [and] [risers] made with products and adhesives that
contain no urea formaldehyde.
Softwood Plywood: DOC PS 1.
Hardboard: AHA A135.4, Tempered Grade.
Hardware and Fasteners: Manufacturer's standard non-corroding type, permanently mounted to
units, remaining set or tightened under load and vibration in service, and designed to preclude
user contact with sharp edges.
FABRICATION
General: Provide portable stages and risers meeting requirements of Performance Requirements
Article, with the following characteristics:
37.
Portable and storable in space indicated.
38.
Easily set up and disassembled without use of special tools or loose fasteners.
39.
Modular and reconfigurable.
WENGER CORP.
[11 61 23][11062] FOLDING AND PORTABLE STAGES AND RISERS
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[STAGE PLATFORMS] [AND] [SEATED RISERS]
Frame: Extruded 6063T aluminum tube, 3 inch (76 mm), grooved to accept attachments.
Legs: Extruded 6063T aluminum square tube, 1.97 by .098 inch (50 by 2.5 mm), 8, 16, 24, 32, and
40-inch (200, 410, 610, 810, and 1020 mm) high, as required for layout indicated, configured
to fit into clamping mechanism mounted on deck panel bottom, with non-marking tips.
40.
Custom length legs: Provide where required for layout indicated.
41.
Telescoping legs: Provide where indicated.
Deck Panels: Manufacturer's standard panel construction, 3/4-inch (19-mm) overall thickness,
consisting of minimum 1/2-inch (12-mm) thick plywood substrate with finish surfaces consisting
of [1/8-inch (3-mm) tempered hardboard[, with painted top surface] [black
phenolic, thermally-fused, with bottom backer sheet] [manufacturer's standard
carpet, with plywood bottom] [plywood substrate ready to receive scheduled fieldapplied carpet], edged with extruded aluminum.
42.
Panel Dimensions: Manufacturer's standard sizes, as required for layout indicated.
ACCESSORIES
Guards and Railings: Complying with performance requirements specified in Part 1, clampattached without tools, with built-in chair stop.
Ramps: Complying with performance and accessibility requirements specified in Part 1, adjustable
to meet platform height, portable and compatible with platform panel storage cart.
Stairs: [Fixed] [Articulating] stair set, sized as required by platform layout, with handrails and
slip-resistant treads.
Box Step: Single relocatable box step equipped with clamps for fixing in place, height as required,
located as indicated.
Leg Storage Clips: Provide bottom-of-deck panel leg storage clips.
Chair Stops: Clamp on chair leg stop, able to be installed and demounted without tools.
Storage Cart: Steel tube-framed, 8-panel folding transport cart with heavy-duty 8 inch (200 mm)
casters and clamping safety strap. Provide number of carts required for layout indicated.
Closure Panels: Closure panels matching horizontal surface, not less than 3/4 inch (19 mm) thick
plywood, located as follows:
43.
Front of unit.
44.
Sides of unit.
45.
Intermediate risers.
Curtain [Closures] [and] [Backdrops]: Manufacturer's standard stage-drapery-fabric curtain
closures with hanging accessories, as follows:
46.
Skirting closures.
47.
Backdrop closure, 8-foot- (2.4 m-) high, with metal frame.
48.
Color: As selected by Architect from manufacturer's full range.
FINISHES
Metal Finishes: Aluminum: Mill finish.
Opaque Finish for Hardboard: 100 percent acrylic latex primer, specially formulated for adhesion to
impermeable surfaces, 2-coat, satin finish, black. Basis of design product: Rosco, Tough Coat
Primer, www.rosco.com.
WENGER CORP.
[11 61 23][11062] FOLDING AND PORTABLE STAGES AND RISERS
Page 5 of 7 PS-0144 Revision 1
EXECUTION
INSTALLATION
Install units in location as directed to verify components are complete and operational.
Train Owner's personnel to adjust, operate, and maintain units.
Disassemble units following approval and store in location indicated.
Turn over operation and maintenance instructions to Owner.
[END OF SECTION 11 61 23]
[END OF SECTION 11062]
WENGER CORP.
[11 61 23][11062] FOLDING AND PORTABLE STAGES AND RISERS
Page 6 of 7 PS-0144 Revision 1
WENGER CORP.
[11 61 23][11062] FOLDING AND PORTABLE STAGES AND RISERS
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