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| | SECTION 05720 |
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| | ORNAMENTAL HANDRAILS AND RAILINGS |
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| | For best results, display hidden notes to specifier. |
| | ** NOTE TO SPECIFIER ** C.S. Johnson; guardrails with stainless steel cable or rod infill.
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This section is based on cable fittings and rods made by C. Sherman Johnson Co., Inc., which is located at:
Rte. 82, Industrial Park
PO Box L
East Haddam, CT 06423
Tel: (800) 874-7455
www.csjohnson.com
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Johnson has been manufacturing stainless steel marine hardware since 1958, serving boaters all over the world. The same type of hardware, combined with stainless steel cables, is now used to construct innovative, attractive railing systems. Another variety of railing covered by this section uses 1/4 inch stainless steel rods as balusters in a conventional railing design. Johnson does not make the railing framework, so this specification is addressed to the railing fabricator rather than to the cable and cable fittings supplier.
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| | PART 1 | GENERAL |
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| | 1.1 | SECTION INCLUDES |
| | ** NOTE TO SPECIFIER ** Delete any products not specified. |
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| | | A. | Steel guardrails with stainless steel cable infill. |
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| | | B. | Steel guardrails with vertical stainless steel rod infill. |
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| | 1.2 | RELATED SECTIONS |
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| | | A. | Section 03300 - Cast-In-Place Concrete: Placement of anchors in concrete. |
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| | | B. | Section 04810 - Unit Masonry Assemblies: Placement of anchors in masonry. |
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| | | C. | Section 05510 - Metal Stairs: Handrails other than those specified in this section. |
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| | | D. | Section 06200 - Finish Carpentry: Wood handrail. |
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| | | E. | Section 08800 - Glazing: Glass baluster infill. |
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| | | F. | Section 09900 - Paints and Coatings: Paint finish. |
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| | 1.3 | REFERENCES |
| | ** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section. |
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| | | A. | ASTM A 123/A 123M - Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products; 2001a. |
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| | | B. | ASTM A 500 - Standard Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes; 2001a. |
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| | | C. | ASTM B 177 - Standard Guide for Engineering Chromium Electroplating; 2001. |
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| | | D. | ASTM E 985 - Standard Specification for Permanent Metal Railing Systems and Rails for Buildings; 2000. |
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| | | E. | Mil-W-83420 - Wire Rope, Flexible for Aircraft Control; latest amendment. |
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| | | F. | SSPC-Paint 15 - Steel Joist Shop Paint; The Society for Protective Coatings; 1999 (Ed. 2000). |
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| | 1.4 | SUBMITTALS |
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| | | A. | Submit under provisions of Section 01300. |
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| | | B. | Shop Drawings: Indicate profiles, sizes, connection attachments, anchorage, size and type of fasteners, and accessories. |
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| | PART 2 | PRODUCTS |
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| | 2.1 | MANUFACTURERS |
| | ** NOTE TO SPECIFIER ** If desired, insert the names of railing fabricators. These would usually be steel fabricators, ornamental metal workers, or cable rigging fabricators. Contact Johnson for names of local fabricators. |
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| | | A. | Guardrails, Handrails and Railings: |
| | | | 1. | _____________________________. |
| | | | 2. | _____________________________. |
| | | | 3. | _____________________________. |
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| | | B. | Wire Rope: |
| | | | 1. | Sanlo Manufacturing, Inc. |
| | | | 2. | Loos & Company, Inc. |
| | | | 3. | GBG Industries. |
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| | | C. | Cable Fittings: Johnson Architectural Hardware; Rte. 82, Industrial Park, PO Box L, East Haddam, CT 06423. ASD. Te1: (800)874-7455. www.csjohnson.com. |
| | ** NOTE TO SPECIFIER ** Delete one of the following two paragraphs; coordinate with requirements of Division 1 section on product options and substitutions. |
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| | | D. | Substitututions: Not permitted. |
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| | | E. | Requests for substitutions will be considered in accordance with provisions of Section 01600. |
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| | 2.2 | GUARDRAILS |
| | ** NOTE TO SPECIFIER ** Check your local code for requirements relating to guardrails in general and cable railings in particular. Cable infill for guardrails is recommended to be spaced at no more than 3 inches on center. Because of the high tension required to keep the cables taut, the railing framework needs to be strong and stiff. The minimum dimensions for the end posts and corners of the railing framework are as follows: Round pipes, 1-1/2 inches inner diameter (Schedule 80); square tube, 2 inches by 2 inches by 1/4 inch wall; angle iron, 2 inches by 2 inches by 1/2 inch; and flat bar, 2 inches by 1 inch. Cables using traditional turnbuckles should not be longer than 50 feet. With Smooth Line turnbuckles, the limit is 30 feet. Posts should be placed at 4 feet on center or less. For vertical rod balusters Johnson suggests a standard design -- see their catalog, on their web site. |
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| | | A. | Design, fabricate, and test railing assemblies in accordance with the most stringent requirements of ASTM E 985 and applicable local code. |
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| | | B. | See drawings for guardrail dimensions and configuration. |
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| | 2.3 | RAILING COMPONENTS |
| | ** NOTE TO SPECIFIER ** Delete post and rail materials not required. The minimum sizes indicated are those recommended to achieve the stiffness necessary for adequate tensioning of the cable. |
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| | | A. | Steel Tubing: ASTM A 500, Grade B cold-formed structural tubing. |
| | | | 1. | Round Posts: 1-1/2 inches (38 mm) inside diameter, Schedule 80, minimum. |
| | | | 2. | Square Posts: 2 by 2 inches (50 by 50 mm), 1/4 inch (6 mm) wall thickness, minimum. |
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| | | B. | Steel Angle Posts: ASTM A36/A 36M, minimum 2 by 2 by 1/2 inch (50 by 50 by 12 mm). |
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| | | C. | Bar Posts: ASTM A36/A 36M, minimum 2 by 1 inches (50 by 25 mm). |
| | ** NOTE TO SPECIFIER ** Stainless steel cables are used as the infill in guardrail assemblies. A cable assembly consists of three elements: 1) the cable, 2) an attachment fitting at each end, and 3) a turnbuckle or adjustable threaded stud to apply tension to the cable. |
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| | | D. | Cables: Stainless steel wire rope, Type 302 or 304; Mil-W-83420, Composition B, Commercial Grade, Specification SD 117, oil-free. |
| | ** NOTE TO SPECIFIER ** Delete all but one of the following four paragraphs. 1x19 cable is semi-rigid, used only for straight runs. 1x19 cable consists of a layer of 6 wires laid around a center wire, and a layer of 12 wires laid over the 7 wire strand. Typical breaking strength is:
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1/8 inch - 2,100 psi
3/16 inch - 4,700 psi
1/4 inch - 8,200 psi
3/8 inch - 17,500 psi |
| | | | 1. | Straight Runs: 1/8 inch (3 mm) diameter, 1x19. |
| | | | 2. | Straight Runs: 3/16 inch (5 mm) diameter, 1x19. |
| | | | 3. | Straight Runs: 1/4 inch (6 mm) diameter, 1x19. |
| | | | 4. | Straight Runs: 3/8 inch (9.5 mm) diameter, 1x19. |
| | ** NOTE TO SPECIFIER ** Delete one of the following three paragraphs. 7x19 is made up of six strands of 1x19 helically formed around a 1x19 strand core. This construction is one of the most flexible of cable, having a total of 133 wires. 7x19 cable is typically only used for decorative purposes, not for guardrails. Typical breaking strength is:
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1/8 inch - 1,760 psi
3/16 inch - 3,700 psi
1/4 inch - 6,400 psi
3/8 inch - 12,000 psi |
| | | | 5. | Runs Not Functioning as Guardrail Component: 1/8 inch (3 mm) diameter, 7x19. |
| | | | 6. | Runs Not Functioning as Guardrail Component: 3/16 inch (5 mm) diameter, 7x19. |
| | | | 7. | Runs Not Functioning as Guardrail Component: 1/4 inch (6 mm) diameter, 7x19. |
| | | | 8. | Runs Not Functioning as Guardrail Component: 3/8 inch (9.5 mm) diameter, 7x19. |
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| | | E. | Cable Fittings: Stainless steel, Type 302 or 304; sizes to suit cable. |
| | ** NOTE TO SPECIFIER ** Delete one of the following methods of attaching cable to fittings. Hand crimping is possible only with 1/8 and 3/16 inch cable. |
| | | | 1. | Cable Attachment Method: Machine swaged by cold-forming press, with smooth surface and achieving full cable strength in fitting connection. |
| | | | 2. | Cable Attachment Method: Hand crimped. |
| | ** NOTE TO SPECIFIER ** Cable terminals are the fittings that attach the cable to posts or other supports. Delete all but one of the following five terminals. If more than one type is required, be sure to indicate where each is to be used. Ball ends, swivel deck mounts, and swivel toggle jaws are used where the cable is at an angle to the support. Button heads must be at right angles to the support. Threaded rods can be installed at any angle that can be threaded. |
| | | | 3. | Cable Terminals: Ball end, 5/8 inch (16 mm) diameter, threaded onto end fitting, for 11/32 inch (8.7 mm) diameter hole in support. |
| | | | 4. | Cable Terminals: Button head, 9/16 inch (14 mm) diameter, threaded onto end fitting, for 11/32 inch (8.7 mm) diameter hole in support. |
| | | | 5. | Cable Terminals: Swivel deck mount flange with two screw holes, attached to end fitting. |
| | | | 6. | Cable Terminals: Threaded rod attached to end fitting, minimum 4 inches (200 mm) of thread. |
| | | | 7. | Cable Terminals: Swivel toggle jaw, with clevis pin for 9/32 inch (7 mm) diameter hole, attached to end fitting. |
| | ** NOTE TO SPECIFIER ** Delete three of the following four paragraphs. The first two are the traditional, shaped turnbuckle. The third (Smooth Line) looks like a straight cylindrical sleeve. The fourth (Railjuster) is made for quick assembly with an allen wrench. |
| | | | 8. | Turnbuckles: Threaded connection at one end, cable terminal at other; minimum 1-1/2 inch (38 mm) adjustment. |
| | | | 9. | Turnbuckles: Threaded connection each end, minimum 3 inches (75 mm) adjustment. |
| | | | 10. | Turnbuckles: Constant diameter, smooth surfaced sleeve covering hand crimped end fitting with end cap and 2 inch (50 mm) internal thread on other end; Johnson Smooth Line. |
| | | | 11. | Turnbuckles: Threaded connection at one end, allen head socket at other end, minimum 1-1/2 inches (38 mm) adjustment; Johnson Railjuster. |
| | ** NOTE TO SPECIFIER ** Vertical rods are for balusters in guardrail panels. A top sub-rail and bottom rail hold the rods. Delete if not required. |
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| | | F. | Vertical Rods: Stainless steel, Type 302 or 304, 1/4 inch (6 mm) diameter. |
| | | | 1. | Top End: Ball top, 5/8 inch (16 mm) diameter. |
| | | | 2. | Top End: Button top, 9/16 inch (14 mm) diameter. |
| | | | 3. | Bottom End: Threaded for tensioning in bottom rail. |
| | | | 4. | Bottom End: Threaded for nut and washer. |
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| | | G. | Mounting Fittings: Suitable for application. |
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| | | H. | Exposed Fasteners: Flush countersunk screws or bolts; consistent with design of railing. |
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| | | I. | Plastic Handrail Cover: Extruded PVC, , color as selected; heat welded joints. |
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| | | J. | Galvanizing: In accordance with requirements of ASTM A 123/A 123M. |
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| | | K. | Shop and Touch-Up Primer: SSPC-Paint 15, complying with VOC limitations of authorities having jurisdiction. |
| | ** NOTE TO SPECIFIER ** Delete the following paragraph if not required. |
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| | | L. | Chrome Plating: ASTM B 177, nickel-chromium alloy, satin finish. |
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| | 2.4 | FABRICATION |
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| | | A. | Fit and shop assemble components in largest practical sizes for delivery to site. |
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| | | B. | Fabricate components with joints tightly fitted and secured. Provide spigots and sleeves to accommodate site assembly and installation. |
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| | | C. | Provide anchors and plates required for connecting railings to structure. |
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| | | D. | Exposed Mechanical Fastenings: Provide flush countersunk screws or bolts; unobtrusively located; consistent with design of component, except where specifically noted otherwise. |
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| | | E. | Supply components required for anchorage of fabrications. Fabricate anchors and related components of same material and finish as fabrication, except where specifically noted otherwise. |
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| | | F. | Exterior Components: Continuously seal joined pieces by intermittent welds and plastic filler. Drill condensate drainage holes at bottom of members at locations that will not encourage water intrusion. |
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| | | G. | Interior Components: Continuously seal joined pieces by intermittent welds and plastic filler. |
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| | | H. | Grind exposed joints flush and smooth with adjacent finish surface. Make exposed joints butt tight, flush, and hairline. Ease exposed edges to small uniform radius. |
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| | | I. | Accommodate expansion and contraction of members and building movement without damage to connections or members. |
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| | PART 3 | EXECUTION |
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| | 3.1 | EXAMINATION |
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| | | A. | Verify that field conditions are acceptable and are ready to receive work. |
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| | 3.2 | PREPARATION |
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| | | A. | Clean and strip primed steel items to bare metal where site welding is required. |
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| | | B. | Supply items required to be cast into concrete or embedded in masonry with setting templates, for installation as work of other sections. |
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| | 3.3 | INSTALLATION |
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| | | A. | Install in accordance with manufacturer's instructions. |
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| | | B. | Install components plumb and level, accurately fitted, free from distortion or defects. |
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| | | C. | Anchor railings securely to structure. |
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| | | D. | Conceal bolts and screws whenever possible. Where not concealed, use flush countersunk fastenings. |
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| | | E. | Tension cables as recommended by cable fittings manufacturer. |
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| | 3.4 | ERECTION TOLERANCES |
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| | | A. | Maximum Variation From Plumb: 1/4 inch (6 mm) per floor level, non-cumulative. |
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| | | B. | Maximum Offset From True Alignment: 1/4 inch (6 mm). |
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| | | C. | Maximum Out-of-Position: 1/4 inch (6 mm). |
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| | END OF SECTION |