SECTION 05520

HANDRAILS AND RAILINGS

PART 1 GENERAL

SECTION INCLUDES

[Steel] [Aluminum] [pipe] [tube] handrails, balusters, and fittings.

[Plastic covered handrailing.]

PRODUCTS FURNISHED BUT NOT INSTALLED UNDER THIS SECTION

Section 03300 - Cast-In-Place Concrete: Placement of anchors in concrete.

Section [04300 - Unit Masonry System] [_____-__________]: Placement of anchors in masonry.

Section [_____-__________]: Placement of anchors in [__________] wall construction.

RELATED SECTIONS

Section [_____-__________]: Attachment [plates] [angles] [and] [__________] for metal stairs, including anchorage.

Section 05510 - Metal Stairs: Handrails other than specified in this Section.

Section 06200 - Finish Carpentry: Wood Handrail.

Section 08800 - Glazing: Glass baluster infill.

Section 09900 - Painting: Paint finish.

ASTM A53 - Hot-Dipped, Zinc-coated Welded and Seamless Steel Pipe.

ASTM A386 - Zinc-Coating (Hot-Dip) on Assembled Steel Products.

ASTM A500 - Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Round and Shapes.

ASTM A501 - Hot-Formed Welded and Seamless Carbon Steel Structural Tubing.

ASTM B211 - Aluminum-Alloy Bars, Rods, and Wire.

ASTM B221 - Aluminum-Alloy Extruded Bars, Rods, Wire, Shapes, and Tubes.

ASTM B241 - Aluminum-Alloy Seamless Pipe and Seamless

Extruded Tube.

ASTM B483 - Aluminum and Aluminum-Alloy Drawn Tubes for General Purpose Applications.

SSPC - Steel Structures Painting Council.

DESIGN REQUIREMENTS

Railing assembly, wall rails, and attachments to resist lateral force of [75] [_____] lbs ([333] [_____] N) at any point without damage or permanent set.

SUBMITTALS

Submit under provisions of Section [01300.] [_____.]

Shop Drawings: Indicate profiles, sizes, connection attachments, anchorage, size and type of fasteners, and accessories.

Samples: Submit [two] [_____], [_____] inch ([_____] mm) long samples of handrail. Submit [two] [_____] samples, of [elbow] [Tee] [wall bracket] [escutcheon] [and] [end stop].

FIELD MEASUREMENTS

Verify that field measurements are as indicated on [[Drawings] [shop drawings].] [instructed by the manufacturer.]

PART 2 PRODUCTS

MANUFACTURERS

[______________________________] Product [__________.]

Other acceptable manufacturers offering equivalent products.

[_________________________] Product [___________.]

[_________________________] Product [___________.]

[_________________________] Product [___________.]

Substitutions: Under provisions of Section [01600.] [_____.]

ALUMINUM RAILING SYSTEM

Rails [and Posts]: [1-1/2] [1-1/4] [_____] inch ([38] [32] [_____] mm) diameter, extruded tubing [conforming to ASTM [B211] [B221] [B241] [B483]].

[Posts: [2 x 2-1/2] [_____x_____] inch ([50 x 60] [_____x_____] mm) size, extruded tubing [conforming to ASTM [B211] [B221] [B241] [B483]].

Fittings: Elbows, T-shapes, wall brackets, escutcheons; [cast] [machined] aluminum.

Mounting: [Adjustable] brackets and flanges, [with [aluminum] [steel] inserts for casting in concrete.] [with [aluminum] [steel] brackets for embedding into masonry.] [Prepare backing plate for mounting in [__________] wall construction.]

Splice Connectors: [Concealed spigot] [Collar with locking set screws] [Welding collars]; [cast] [machined] aluminum.

Exposed Fasteners: Flush countersunk screws or bolts; consistent with design of railing.

Finish: [Anodized] [Mill finish] [Coated] to [__________] color.

STEEL RAILING SYSTEM

Steel Tubing: [ASTM A500, Grade B.] [ASTM A501.]

****** [OR] ******

Pipe: [ASTM A53, Grade [B] [_____] Schedule [40] [_____].] [__________.]

****** [OR] ******

Rails [and Posts]: [_____] inch ([_____] mm) [diameter] [square] steel [tubing] [pipe]; [welded] [threaded] joints.

[Posts: [_____] inch ([_____] mm) [diameter] [square] steel [tubing] [pipe]; [welded] [threaded] joints.]

Fittings: Elbows, T-shapes, wall brackets, escutcheons; [cast] [machined] steel.

Mounting: [[Adjustable] brackets and flanges, [with steel inserts for casting in concrete] [with steel brackets for embedding in masonry]. [Prepare backing plate for mounting in [_____] wall construction.

Exposed Fasteners: Flush countersunk screws or bolts; consistent with design of railing.

Splice Connectors: Steel [concealed spigots] [welding collars] [threaded collars].

Plastic Handrail Cover: Extruded PVC, [__________] profile, [__________] color.

Shop and Touch-Up Primer: [SSPC 15, Type 1, red oxide.] [_____.]

****** [OR] ******

Galvanizing: [1.25] [2.0] [_____] oz/sq ft ([380] [610] [_____] g/sq m) zinc coating [in accordance with ASTM A386].

****** [OR] ******

Shop Prefinishing: [Enamelled] [Epoxy coated] [__________] to [__________] color.

FABRICATION

Fit and shop assemble components in largest practical sizes, for delivery to site.

Fabricate components with joints tightly fitted and secured.

Exposed Mechanical Fastenings: Flush countersunk screws or bolts; unobtrusively located; consistent with design of component, except where specifically noted otherwise.

Supply components required for anchorage of fabrications. Fabricate anchors and related components of same material and finish as fabrication, except where specifically noted otherwise.

Continuously seal joined pieces by [intermittent welds and plastic filler.] [continuous welds.]

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.

Accurately form components [to suit stairs and landings], to each other and to building structure.

[Install continuous plastic handrail cover. Heat weld joints and trim smooth.]

[Coordinate installation of wood handrail with Section [_____].]

PART 3 EXECUTION

EXAMINATION

Verify that field conditions are acceptable and are ready to receive work.

Beginning of installation means erector accepts existing conditions.

PREPARATION

Clean and strip primed steel items to bare metal where

site welding is required.

Supply items required to be [cast into concrete] [and] [or] [embedded in masonry] [placed in partitions] with setting templates, to appropriate Sections.

INSTALLATION

[Install in accordance with manufacturer's instructions.]

Install components plumb and level, accurately fitted, free from distortion or defects.

Provide anchors, [plates] [angles] [__________] required for connecting railings to structure. Anchor railing to structure.

[Field weld anchors as indicated on [Drawings.] [shop drawings.] Touch-up welds with primer. Grind welds smooth.]

Conceal bolts and screws whenever possible. [Where not concealed, use flush countersunk fastenings.]

ERECTION TOLERANCES

Maximum Variation From Plumb: [1/4] [_____] inch ([6] [_____] mm) per story, non-cumulative.

Maximum Offset From True Alignment: [1/4] [_____] inch ([6] [_____] mm).

SCHEDULE

Stairs A and B: Flat steel bar railing system, plastic handrail cover, primed finish.

Stair C: Aluminum pipe railings, enamelled finish.

END OF SECTION