SECTION 05 71 13

FABRICATED SPIRAL STAIRS

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 Copyright  -  2004 ARCAT, Inc. - All rights reserved

PART 1    GENERAL
1.1	SECTION INCLUDES
A.	Wood Spiral Stairs.
B.	Metal Spiral Stairs.
1.2	RELATED SECTIONS
A.	Section 03 30 00 - Cast-in-Place Concrete.
B.	Section 05 50 00 - Metal Fabrications.
C.	Section 05 51 00 - Metal Stairs.
D.	Section 09 90 00 - Painting and Coating:  Field finishing of wood components.
1.3	REFERENCES
A.	ASTM A 123/A 123M - Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products; 2001a.
B.	ASTM A 780 - Standard Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized Coatings; 2001.
C.	ASTM C 1028 - Standard Test Method for Determining the Static Coefficient of Friction of Ceramic Tile and Other Like Surfaces by the Horizontal Dynamometer Pull-Meter Method; 1996.
D.	AWS D 1.1 - Structural Welding Code - Steel; 2002.
E.	NAAMM AMP 510 - Metal Stairs Manual; 1992, Fifth Edition.
F.	SSPC Paint 20 - Zinc-Rich Primers (Type I, "Inorganic," and Type II, "Organic"); 1982 (Ed. 2000).
1.4	SUBMITTALS
A.	Submit under provisions of Section 01 30 00.
B.	Product Data:  Manufacturer's data sheets on each product to be used, including:
1.	Preparation instructions and recommendations.
2.	Storage and handling requirements and recommendations.
3.	Installation methods.
C.	Shop Drawings:  Submit shop drawings for stairs and railings.
1.	Include plans, elevations, and details.
2.	Indicate floor opening details, including floor opening and stair height tolerances.
3.	Show connection and accessory items and locations for anchor and bolt installation.
4.	Include design loads, structural calculations and material properties.
5.	Shop drawings shall be signed and sealed by a structural engineer licensed in the state in which Project is located.
1.5	QUALITY ASSURANCE
A.	Manufacturer Qualifications:  Firm that has produced types of stair and railing systems required for not less then ten years, with not less than five similar projects that have been successful use for not less than five years.
B.	Installer Qualifications:  Minimum five years experience in successful installation of stair and railing systems of type specified.
1.6	DELIVERY, STORAGE, AND HANDLING
A.	Store products in manufacturer's unopened packaging until ready for installation.
B.	Store in a weathertight location and protect from corrosion, distortion and other damage during delivery storage and handling.
1.7	PROJECT 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 absolute limits.
PART 2    PRODUCTS
2.1	MANUFACTURERS
A.	Acceptable Manufacturer: Stairways, Inc., which is located at:<BR />4166 Pinemont<BR />Houston, TX 77018<BR />Toll Free Tel: 800-231-0793<BR />Tel: 713-680-3110<BR />Fax: 866-423-3347<BR />Email:  markanderson@stairwaysinc.com;Web: https://www.stairwaysinc.com 
B.	Substitutions:  Not permitted.
C.	Requests for substitutions will be considered in accordance with provisions of Section 01 60 00.
2.2	SPIRAL STAIRS
A.	Spiral Stairs:  Designed by stair manufacturer for applicable code requirements for live and dead loads, dimensions, and other requirements.
1.	Type  Metal structure, preassembled; designed in accordance with NAAMM Metal Stairs Manual.
2.	Type  Metal structure, knocked-down; designed in accordance with NAAMM Metal Stairs Manual.
3.	Type:  All wood, preassembled; members of premium grade and stair manufacturer's grain selection for field staining; 6 percent maximum moisture content..
a.	Species:  Oak. (Standard)
b.	Species:  Teak.
c.	Species:  Pine, unless otherwise indicated.
d.	Species:  Walnut, unless otherwise indicated.
e.	Species:  Cherry, unless otherwise indicated.
f.	Species:  Mahogany, unless otherwise indicated.
g.	Species:  Maple, unless otherwise indicated.
h.	Species:  ________.
4.	Spiral Direction:  Clockwise rotation.
5.	Spiral Direction:  Counterclockwise rotation.
6.	Stair Well:  Square.
7.	Stair Well:	Round.
8.	Provide platforms with integral nosings matching tread nosings.
9.	Provide well rail matching stair balusters and handrails around entire well opening.
B.	Treads and Landings:  Wood.
1.	Treads:  Oak.
2.	Landings:  Oak.
3.	Landings:  Teak.
4.	Thickness:  1-1/2 inch (38 mm).
5.	Provide wood nosing on leading edge.
6.	Provide rubber nosing on treads.
C.	Treads and Landings:  Checker plate.
1.	Material:  Stainless steel.
2.	Material:  Steel.
3.	Material:  Aluminum.
4.	Thickness:  12 gage.
5.	Thickness:  3/16 inch (5 mm).
D.	Treads and Landings:  Rubber covered metal.
1.	Material:  Stainless steel.
2.	Material:  Steel.
3.	Material:  Aluminum.
4.	Thickness:  12 gage.
5.	Thickness:  3/16 inch (5 mm).
E.	Treads and Landings:  Abrasive surfaced.
1.	Material:  Steel plate with abrasive granules rolled into surface or metallically bonded to steel by proprietary process; coefficient of friction of 0.6 or higher when tested in accordance with ASTM C 1028.
2.	Thickness:  12 gage.
3.	Thickness:  3/16 inch (5 mm).
F.	Treads and Landings:  Smooth metal surface.
1.	Treads:  Stainless steel.
2.	Treads:  Steel.
3.	Treads:  Aluminum.
4.	Landings:  Stainless steel.
5.	Landings:  Steel.
6.	Landings:  Aluminum.
7.	Thickness:  12 gage.
8.	Thickness:  3/16 inch (5 mm).
G.	Treads and Landings:  Smooth metal with wood overlay surface.
1.	Treads:  Steel.
2.	Treads:  Aluminum.
3.	Treads:  Wood overlay, Oak, thickness, 1-1/2 inch (38 mm).
4.	Landings:  Steel.
5.	Landings:  Aluminum.
6.	Landings: Wood overlay, Oak, thickness, 1-1/2 inch (38 mm).
7.	Thickness:  12 gage.
8.	Thickness:  3/16 inch (5 mm).
H.	Treads and Landings:  Metal pan type.
1.	Treads:  Steel.
2.	Landings:  Stainless steel.
3.	Landings:  Steel.
4.	Landings:  Aluminum.
5.	Thickness:  12 gage.
6.	Thickness:  3/16 inch (5 mm).
7.	Concrete Tread Inserts:  By others.
8.	Concrete Tread Inserts:  _________.
I.	Treads and Landings:  Grating.
1.	Pattern:  Rectangular bar grating, 1 inch (25.4 mm) by 3/16 inch (4.8 mm).
2.	Pattern:  Radial grating, 1 inch (25.4 mm) by 3/16 inch (4.8 mm).
3.	Treads:  Stainless steel.
4.	Treads:  Steel.
5.	Treads:  Aluminum.
6.	Landings:  Stainless steel.
7.	Landings:  Steel.
8.	Landings:  Aluminum.
9.	Provide nosing on leading edge.
J.	Treads and Landings:  Perforated metal.
1.	Material:  Steel.
2.	Material:  Stainless steel.
3.	Thickness:  12 gage.
K.	Treads and Landings:  Patterned metal.
1.	Material:  Steel.
2.	Material:  Aluminum.
3.	Material:  Stainless steel.
4.	Pattern:  Filigree, 1 inch (25.4 mm) by 3/16 inch (4.8 mm).
5.	Pattern:	Arc, 1 inch (25.4 mm) by 3/16 inch (4.8 mm).
6.	Pattern:  Traditional, 12 gage.
7.	Pattern:  Traditional, 3/16 inch (4.8 mm).
L.	Handrails:  Round.
1.	Material:  Steel.
2.	Material:  Aluminum.
3.	Material:  Stainless steel.
4.	Material:  Brass.
5.	Material:  Chrome plated.
6.	Diameter:  1-1/2 inches (38 mm).
7.	Diameter:  2 inches (50 mm).
M.	Handrails:  Flat metal bar.
1.	Material:  Steel.
2.	Material:  Aluminum.
3.	Material:  Stainless steel.
4.	Size:  1/4 inch (6 mm) by 1-1/4 inches (32 mm).
5.	Provide black vinyl cover, Julius Blum Colorail.
N.	Handrails:  Metal, molded design.
1.	Material:  Steel.
2.	Material:  Aluminum.
3.	Material:  Stainless steel.
4.	Material:  Nickel Bronze (Silver).
5.	Pattern:  1-5/8 inch (41 mm) wide (No. 210).
6.	Pattern:  2-1/4 inch (57 mm) wide (No. 211).
O.	Handrails:  Bronze, molded design.
1.	Pattern:  1-15/16 inch 49 mm) wide (No. 220).
2.	Pattern:  2-1/4 inch (57 mm) wide (No. 221).
3.	Pattern:  2 inch (51 mm) oval nickel bronze (No. 222).
4.	Pattern:  Oval (No. 223).
5.	Provide volute at top and bottom end.
P.	Handrails:  Oak.
1.	Size:  2 inches (51 mm) by 3-1/2 inches (89 mm) (No. 231).
2.	Size:  2-1/4 inches (57 mm) by 3-1/2 inches (89 mm) (No. 235).
3.	Size:  2-3/4 inches (70 mm) by 2-3/8 inches (60 mm) (No. 237).
4.	Size:  3-1/2 inches (89 mm) by 2-3/8 inches (60 mm) (No. 240 ).
5.	Size:  3 inches (76 mm) diameter (No. 241).
6.	Size:  2 inches (50.8 mm) diameter (No. 242).
7.	Size:  1-1/2 inches (38 mm) diameter (No. 243).
8.	Size:  2-1/4 inches (57 mm) by 1 inch (25 mm) oval (No. 247).
9.	Size:  1-1/2 inch (38 mm) by 2 inches (51mm) ( No. 248).
10.	Provide volute at top and bottom end.
Q.	Balusters:  Wood.
1.	Species:  Oak.
2.	Size:  1-1/4 inches (32 mm) square.
3.	Size:  1-1/4 inches (32 mm) square, turned design; Model No. _______.
4.	Size:  1-3/4 inches (44 mm) square, turned design; Model No. _______.
5.	Size:  1-3/4 inches (44 mm) round, turned design; Model No. _______.
6.	Space balusters at 4 inches (102 mm) on center.
7.	Provide one baluster per tread, centered.
R.	Balusters:  Metal.
1.	Material:  Steel.
2.	Material:  Aluminum.
3.	Material:  Bronze.
4.	Material:  Brass.
5.	Cross-Section:	1 inch (25.4 mm) square.
6.	Cross-Section:  1 inch (25.4 mm) square, twisted.
7.	Cross-Section:  1 inch (25.4 mm) round.
8.	Cross-Section:  3/4 inch (19 mm) square.
9.	Cross-Section:  3/4 inch (19 mm) round.
10.	Cross-Section:  5/8 inch (16 mm) round.
11.	Cross-Section:  1/2 inch (13 mm) square.
12.	Cross-Section:  1/2 inch (13 mm) square, twisted.
13.	Design:  Model No. ____________.
14.	Space balusters at 4 inches (102 mm) on center.
15.	Provide one baluster per tread, centered.
S.	Center Column:  Laminated wood.
1.	Shape: Round.
2.	Shape:  6 sided.
3.	Shape:	12 sided.
4.	Shape:	3 sided.
5.	Shape:  16 sided.
6.	Column Cap:  Match material and finish of column.
7.	Treads mortised, glued and screwed into center column.
T.	Center Column:  Round metal pipe or tube.
1.	Material:  Steel.
2.	Material:  Stainless steel.
3.	Material:  Aluminum.
4.	Diameter:  3-1/2 inches (89 mm) outside.
5.	Diameter:  4 inches (102 mm) outside.
6.	Diameter:  6 inches (152 mm) outside.
7.	Diameter:  As required for specified loading.
8.	Diameter:  As indicated on drawings.
9.	Diameter:  _____________.
10.	Base Plate:  10 inches (254 mm) square, 1/4 inch (6 mm) thick.
11.	Column Cap:  Match material and finish of column.
12.	Column Cap:  Brass; stair system manufacturer's standard profile.
U.	Stringers and Landing Framing:
1.	Material:  Same as tread materials.
2.	Size and Shape:  As required for compliance with performance requirements.
3.	Size and Shape:  As indicated on drawings.
4.	Provide connections and other components necessary for support and installation of stairs.
V.	Finishes:
1.	Wood:
a.	Sanded smooth, ready for finishing.
b.	Sanded only.
2.	Steel:
a.	Manufacturer's standard prime paint finish.
b.	Stair manufacturer's standard zinc chromated reddish brown rust inhibitor.
c.	Hot-dipped galvanized to minimum 1.25 oz./sq ft (0.38 kg/sq m) zinc coating in accordance with ASTM A 123/A 123M.
3.	Stainless Steel:  
a.	Polished #7 finish.
b.	Satin #4 finish.
4.	Aluminum:
a.	Mill finish.
b.	Sandblasted.
5.	Brass:  Polished finish.
6.	Bronze:  Satin finish.
7.	Chrome Plated:
a.	Polished finish.
b.	Sandlblasted.
2.3	MATERIALS
A.	Fasteners and Anchorage Devices:  Type as recommended by stair and railing system manufacturer.
B.	Welding Materials:  Type required for materials being welded.
C.	Galvanizing Repair Paint:  High-zinc-dust content paint for regalvanizing welds in steel, complying with SSPC Paint 20.
D.	Grout:  Non-metallic, non-shrink grout, premixed, non-corrosive, non-staining product containing selected silica sands, portland cement, shrinkage compensating agents, plasticizing and water reducing agents.
2.4	FABRICATION
A.	Fabricate to shapes and configurations indicated in Contract Documents.
B.	Preassembled Stairs:  Fabricate in largest practical sizes for handling through building openings; ship fully assembled except where access to installation area is restricted.
C.	Knocked-Down Stairs (Kits):	Fabricate, disassemble and pack for shipping.
D.	Mark units for reassembly and coordinated installation.
E.	Mill balusters to fit angle of handrail.  Glue and bolt balusters to handrails and treads.
F.	Form elbow bends and wall returns to uniform radius, free from buckles and twists, and with smooth finished surfaces free from blemishes.  Form exposed ends to match or provide matching prefabricated end fittings.
G.	Join components with concealed fastener.  Countersink fasteners that cannot be concealed.
H.	Welded Connections:  Cope and weld or use welded-in fittings.  Weld connections continuously.  Remove sharp or rough edges on exposed surfaces.
I.	Welded Connections for Pipe Railings:  Connect handrail and railing members with sleeve and socket fittings with concealed internal welds.
PART 3    EXECUTION
3.1	EXAMINATION
A.	Verify that field measurements are acceptable to suit stair assembly tolerances.
B.	Verify supports and anchors are correctly and securely positioned.
C.	Start of installation constitutes installer's acceptance of substrate and conditions.
3.2	INSTALLATION
A.	Install in accordance with manufacturer's instructions and approved shop drawings.
B.	Install stair assembly in accordance with manufacturer's instructions and approved shop drawings and in accordance with specified performance requirements.
C.	Anchor components rigidly and securely to building structure, plumb and level, accurately fitted, and free from distortion or defects.
D.	Fit exposed connections to form tight hairline joints.
E.	Weld connections that cannot be shop welded because of size limitations.
1.	Perform field welding of steel in accordance with AWS D 1.1.  Field bolt and weld to match shop bolting and welding.
2.	Clean field welds, bolted connections and abraded areas.
3.	Touch up shop primer.
4.	Repair galvanizing with galvanizing repair paint to comply with ASTM A 780.
3.3	ERECTION TOLERANCES
A.	Maximum Variation from Plumb:  1/4 inch (6 mm) for full height of stair.
B.	Maximum Variation from Level:  1/8 inch (3 mm).
C.	Maximum Angular Variation of the Tread from True Position:  3 degrees.
3.4	PROTECTION
A.	Do not permit traffic on the stair after installation.
B.	Protect installed products until completion of project.
C.	Touch-up, repair or replace damaged products before Substantial Completion.

END OF SECTION