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Duvinage, LLC Fabricated Spiral Stairs
 
         
SECTION 05710
 
         
FABRICATED SPIRAL STAIRS
 
         
          ** NOTE TO SPECIFIER ** Duvinage, LLC; custom fabricated spiral stairs.
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This section is based on the products of Duvinage, LLC, which can be reached at:
60 West Oak Ridge Drive
Hagerstown, MD 21740
Tel: 800-541-2645
Fax: 301-791-7240
Email: sales@duvinage.com
www.duvinage.com
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Duvinage is the oldest and most trusted manufacturer of custom spiral and circular stairs in the United States. Superior design, precise engineering, and careful construction have enabled Duvinage to supply staircases to the most prestigious addresses in America, including the White House and the National Gallery of Art.

Services provided at no cost to Duvinage's valued customers include architectural and contractor advisory services, consulting services, cost estimates, and layout services.
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          PART 1GENERAL
 
          1.1SECTION INCLUDES
          ** NOTE TO SPECIFIER ** Delete items below not required for project.
 
          A.Prefabricated spiral stair, including center support column, radial treads, and spiral handrail.
 
          B.Miscellaneous installation hardware and accessories.
 
          1.2RELATED SECTIONS
          ** NOTE TO SPECIFIER ** Delete any sections below not relevant to this project; add others as required.
 
          A.Section 05510 - Metal Stairs: Standard fire exit stairs.
 
          B.Section 06100 - Rough Carpentry: Framed floor opening.
 
          C.Section 07900 - Joint Sealers: Sealants applied between spiral stair and adjacent work.
 
          D.Section 09680 - Carpet: Tread finish material.
 
          E.Section 09900 - Paints and Coatings: Paint finish to match adjacent materials.
 
          1.3REFERENCES
          ** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section.
 
          A.ASTM A 53/A 53M - Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless; 2000.
 
          B.ASTM A 283/A 283M - Standard Specification for Low and Intermediate Tensile Strength Carbon Steel Plates; 2000.
 
          C.NAAMM AMP 510 - Metal Stairs Manual; The National Association of Architectural Metal Manufacturers; 1992, Fifth Edition.
 
          1.4SUBMITTALS
 
          A.Submit under provisions of Section 01300.
 
          B.[ Product Data ]: Manufacturer's data sheets on stair model to be used, including:
          1.Preparation instructions and recommendations.
          2.Storage and handling requirements and recommendations.
          3.Complete assembly and anchorage requirements.
 
          C.Shop Drawings: Indicate detailed stair configuration, supporting accessories and connections, required floor opening and stair height tolerances, and other measurements affecting the stair.
          ** NOTE TO SPECIFIER ** Delete selection samples if colors have already been selected.
 
          D.Selection Samples: For each finish specified, one complete set of color chips representing manufacturer's full range of available colors and patterns.
 
          E.Verification Samples: For each finish specified; two samples, minimum size 2 inches by 4 inches (51mm x 102mm), representing actual color and finish.
 
          F.Local Building Codes:
          ** NOTE TO SPECIFIER ** Specify your local code; Duvinage stairs can be designed to meet any code required. Copy of the code will be required to meet it. Delete codes not applicable, add others as required.
          1.International Building Code (IBC)
          2.Southern Building Code Congress International (SBCCI).
          3.Building Officials Code Administrators (BOCA).
          4.Council of American Building Officials (CABO).
          5.International Residential Code (IRC).
          6.Uniform Building Code (UBC).
          7.International Conference of Building Official (ICBO).
          8.Code Requirements for Housing Accessibility (CRHA).
          9.Residential & Light Commercial Construction Standards (RLCCS).
 
          1.5QUALITY ASSURANCE
 
          A.Manufacturer Qualifications: A company specializing in the manufacture of spiral stairs with not less than ten years of documented experience.
 
          B.Field Measurements: Verify that field measurements are within tolerances acceptable to manufacturer.
 
          1.6DELIVERY, STORAGE, AND HANDLING
 
          A.Store stair in manufacturer's unopened packaging until ready for installation.
 
          B.Handle stair as recommended by manufacturer to avoid damage to stair and adjacent finishes.
 
          PART 2PRODUCTS
 
          2.1MANUFACTURERS
 
          A.Acceptable Manufacturer: Duvinage, LLC, which is located at: 60 W. Oak Ridge Dr. ; Hagerstown, MD 21740; Toll Free Tel: 800-541-2645; Tel: 301-733-8255; Email: request info; Web: www.duvinage.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 01600.
 
          2.2STAIR DESIGN
 
          A.Conform to applicable building code for live and dead loads applicable to work of this section.
 
          B.Design Loads: Comply with NAAMM AMP 510.
          1.Uniform Live Load: 100 lb/sq ft (4.7 kPa).
          2.Concentrated Live Load: Minimum 300 lb (1330 N).
          3.Maximum Lateral Load to Handrail Without Permanent Set: 200 lbs (890 N).
 
          C.Stair Design:
          ** NOTE TO SPECIFIER ** Enter Stair Design from the following available Duvinage Spiral Stair Design Numbers: 111, 111C, 131, 131AL, 131SS, 131SP, 131C, 135, 135CW, 135AL 135SS, 135SP, 135C, 135LX, 141, 141AL, 141SS, 141CP, 141C, 165, 175, 175R, 175-F1, 175-F2, 175C, 201, 201C, 201A, 201AC, 201ALC, 201SS, 201AL, 220, 220R, 220C, 251, 251AL, 251C, 251SS, 320, 320C, 320AL.
          1.Duvinage Spiral Stair Design: ________.
          ** NOTE TO SPECIFIER ** Minimum stair diameter for 22-1/2 degree treads is 6 ft., and 8 ft diameter is required for NFPA compliance.
          2.Tread Angle: 22-1/2 degrees.
          ** NOTE TO SPECIFIER ** Minimum stair diameter for 28 degree treads is 5 ft, 6 inches.
          3.Tread Angle: 28 degrees.
          ** NOTE TO SPECIFIER ** Minimum stair diameter for 30 degree treads is 5 ft.
          4.Tread Angle: 30 degrees.
          5.Platform: 90 degrees.
          6.Platform: ___ degrees.
          7.Nominal Stair Diameter: 72 inches (1829 mm).
          8.Nominal Stair Diameter: 66 inches (1676 mm).
          9.Nominal Stair Diameter: 60 inches (1524 mm).
          10.Nominal Stair Diameter: _______inches (_____mm).
          11.Floor to Floor Height: _______inches (_____mm).
 
          2.3STAIR COMPONENTS
          ** NOTE TO SPECIFIER ** Select Center Support Pole. Delete one of the next two paragraphs.
 
          A.Center Support Pole: ASTM A 53/A 53M Schedule 40 galvanized steel pipe, 3 inches (76 mm) diameter. - See Dimension Table.
 
          B.Center Support Pole: 22A 6061-T6 Schedule 40 Aluminum pipe, IPS 3 1/2inches (88.9 mm) diameter. - See Dimension Table.
          ** NOTE TO SPECIFIER ** Treads and Platforms. Delete four of the next five paragraphs.
** NOTE TO SPECIFIER ** Next paragraph applies only to Duvinage Design 251.
 
          C.Treads and Platforms: Steel bar grating, 1/8 by 1 inch (3 by 25 mm), with 3/16 inch (4.75 mm) checkered plate or abrasive nosing.
          ** NOTE TO SPECIFIER ** Next paragraph applies only to Duvinage stair designs 131, 141, 175, and 220 less than 7 ft in diameter.
 
          D.Treads and Platforms: ASTM A 283 steel plate, minimum 3/16 inch (4.75 mm).
          ** NOTE TO SPECIFIER ** Paragraph below applies to Duvinage Design 131 for stairs 7 ft in diameter and larger.
 
          E.Treads and Platforms: ASTM A 283 steel plate, minimum 1/4 inch (6.35 mm).
 
          F.Treads and Platforms: 22A Aluminum plate, minimum 1/4 inch (6.35 mm).
 
          G.Hubs: Steel hubs, machined to exact riser height required, so adjacent hubs will rest flush to one another.
          ** NOTE TO SPECIFIER ** Select Balusters. Delete one of the next two paragraphs.
 
          H.Balusters: Standard 3/4 inch (19 mm) diameter round steel rod, formed and milled to fit the curvature of the spiral rail for a clean and neat appearance, and with countersunk holes for mechanical connection of spiral rail.
 
          I.Balusters: Standard 3/4 inch (19 mm) diameter round Aluminum rod formed and milled to fit the curvature of the spiral rail for a clean and neat appearance, and with countersunk holes for mechanical connection of spiral rail.
          ** NOTE TO SPECIFIER ** Spiral Rail. Delete four of the next five paragraphs.
** NOTE TO SPECIFIER ** Paragraph below applies to Duvinage Design 145.
 
          J.Spiral Rail: ASTM A 53/A 53M Schedule 40 cold formed steel pipe, nominal 1 inch (25 mm) diameter (1.313 inches O.D.), drilled and tapped for flat head cap screws.
          ** NOTE TO SPECIFIER ** Paragraph below applies to Duvinage Design 145AL.
 
          K.Spiral Rail: 22A Schedule 40 cold formed Aluminum pipe, nominal 1 inch (25 mm) diameter (1.313 inches O.D.), drilled and tapped for flat head cap screws.
          ** NOTE TO SPECIFIER ** Paragraph below applies to Duvinage Design 150.
 
          L.Spiral Rail: Birch railing, nominal 1 1/2 inch (50 mm) square, machined and sanded in preparation for field applied finishes in accordance with requirements of Section 09900.
          ** NOTE TO SPECIFIER ** Paragraph below applies to Duvinage Design 160.
 
          M.Spiral Rail: Birch railing, nominal 1 3/4 by 2 inches (44 by 51 mm) cross section, machined and sanded in preparation for field applied finishes in accordance with requirements of Section 09900.
          ** NOTE TO SPECIFIER ** Paragraph below applies to Duvinage Design 170.
 
          N.Spiral Rail: Birch railing, nominal 2 inch (50 mm) diameter, machined and sanded in preparation for field applied finishes in accordance with requirements of Section 09900.
 
          2.4FABRICATION
 
          A.Fabricate stair to suit adjacent construction with tolerances for installation, including application of joint sealers in joints between stair and adjoining work, in accordance with requirements of Section 07900.
 
          B.Weld structural stair components together, except where bolted or screwed field connections are required. Site welding is not permitted.
 
          C.Weld cantilever, gusset, channel support beams, and other tread supports to full-length hub.
 
          D.Steel and aluminum spiral rails to be continuous and cold formed to match spiral form of stair within specified manufacturer's minimum factory tolerance. Wood spiral rails to be machined and sanded to match spiral form of stair within specified manufacturer's minimum factory tolerances.
 
          E.Stair to be pre-assembled at the manufacturing facility, marked and inspected prior to shipment to insure stair construction adheres to specified requirements. On-site assembly to consist of mechanical fastening only. Field welding of components will not be accepted.
 
          2.5FINISHES
 
          A.General: Apply factory finishes to all steel surfaces, including mounting hardware and integral structural members, after stair has been assembled. Remove scratches and blemishes from surfaces that will be exposed after installation and refinish as necessary.
 
          B.Surface Preparation: Preheat metal surfaces with a multi-stage cleaning, pretreatment, and chemical conversion coating, in strict accordance with coating manufacturer's recommendations.
 
          C.All steel parts to be chemically cleaned and apply one coat of water-based rust inhibitive green primer to all steel parts, using applicators licensed by coating manufacturer.
 
          PART 3EXECUTION
 
          3.1EXAMINATION
 
          A.Verify that field measurements are acceptable to suit stair assembly tolerances.
 
          B.Do not begin installation of stair until field conditions are acceptable. Do not field cut or otherwise modify stair components.
 
          3.2INSTALLATION
 
          A.Install stair assembly in accordance with manufacturer's instructions.
 
          B.Install stair to be plumb, level, and true, properly aligned with adjacent work. Rigidly secure with clips, bolts, and anchors as required.
          ** NOTE TO SPECIFIER ** Paragraph below is one example of field-applied finishes on steel plate treads. Other finishes are available.
 
          C.Carpet installation is specified in Section 09680.
 
          D.Application of field coatings is specified in Section 09900.
 
          3.3PROTECTION
 
          A.Protect installed products until completion of project.
 
          B.Touch-up, repair or replace damaged components before Substantial Completion.
 
         
END OF SECTION