HomeMy WebLinkAboutFabricated Spiral Stairs� I Dom- 0007
SECTION 05710
FABRICATED SPIRAL STAIRS Design #201
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Copyright 2006 - 2011 ARCA T, Inc. - All rights reserved
PART 1 GENERAL
a M 1.1 . SECTION INCLUDES
A.
B.
Prefabricated spiral stair, including center support column, treads, and spiral
handrail.
Miscellaneous installation hardware and accessories.
1.2 REFERENCES
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.
1.3 SUBMITTALS
A. Submit under provisions of Section 01300.
B. 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 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.
D. Selection Samples: For each finish specified, one complete set of brochures
representing manufacturer's full range of available colors.
E. Verification Samples: For each finish specified; two samples, minimum size 2
inches by 4 inches (51mm x 102mm), representing actual color and finish.
05710-1
F. Local Building Codes to be selected:
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).
1.4 QUALITY ASSURANCE
A. Manufacturer Qualifications: A company specializing in the manufacture of spiral
stairs with not less than ten years of documented experiences
B. Field Measurements: Verify that field measurements are within tolerances
acceptable to manufacturer.
1.5 DELIVERY, 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 2 PRODUCTS
2.1 MANUFACTURERS
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:;
salesteam(@duvinage.com Web: www.duvinage.com
B. Substitutions: Not permitted.
2.2 STAIR 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 Ib/sq ft (4.7 kPa).
2. Concentrated Live Load: Minimum 300 lb (1330 N).
3. Maximum Lateral Load to Handrail Without Permanent Set: 200 Ibs (890 N).
C. Stair Design:
1. Duvinage Spiral Stair Design: 201
2. Tread Angle: 30 degrees.
3. Platform: 90 degrees.
4. Nominal Stair Diameter. 60 inches (1524 mm).
5. Floor to Floor Height: 12'-0°inches ( mm).
2.3 STAIR COMPONENTS
05710-2
A. Treads and Platforms: 22A Aluminum plate, minimum 1/4 inch (6.35 mm).
B. Hubs: hubs machined to exact riser height required, so adjacent hubs will rest flush
to one another.
C. 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.
D. 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.
E. Stair treads to be connected with legs connecting two treads.
2.4 FABRICATION
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.
2.5 FINISHES
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 3 EXECUTION
3.1 EXAMINATION
05710-3
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.
3.2 INSTALLATION
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.
C. Carpet installation is specified in Section 09680.
D. Application of field coatings is specified in Section 09900.
3.3 PROTECTION
A. Protect installed products until completion of project.
B. Touch-up, repair or replace damaged components before Substantial Completion.
END OF SECTION
05710-4
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