SECTION ALUMINUM HANDRAIL SYSTEMS

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1 SECTION ALUMINUM HANDRAIL SYSTEMS PART 1 - GENERAL 1.01 SUMMARY A. Section includes aluminum handrails and railings. B. Related Work: 1. Section Cast-in-Place Concrete C. References: 1. American National Standards Institute (ANSI): a. ANSI A21.I- Safety Requirements for Floor and Wall Openings, Railings and Toe Boards. 2. American Society for Testing and Materials (ASTM): a. ASTM A392 - Standard Specification for Zinc-Coated Steel Chain-Link Fence Fabric. b. ASTM B26 - Standard Specification for Aluminum-Alloy Sand Castings. c. ASTM Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate. d. ASTM B221 - Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Shapes and Tubes. e. ASTM B429 - Standard Specification for Aluminum-Alloy Extruded Structural Pipe and Tube. 3. American Steel Wire Gauge (ASWG) SUBMITTALS A. Submit as specified in Section B. Furnish manufacturer's product specifications and installation instructions for products and processes used in handrails and railings, including finishes and anchorages. C. Furnish fabrication and erection drawings for handrails and railings. 1. Include plans, elevations and details of fittings, connections, and anchorages to other work. 2. Provide templates for anchor and bolt installation by others QUALITY ASSURANCE A. Preassemble items in shop to greatest extent possible to minimize field splicing and assembly. B. Disassemble units only as necessary for shipping and handling limitations. C. Clearly mark units for reassembly and coordinated installation. PART 2 - PRODUCTS 2.01 STRUCTURAL REQUIREMENTS A. Provide railing and handrail assemblies capable of withstanding the following loads applied as indicated: 1. Concentrated load of 200 pounds applied at any point in any direction.

2 2. Uniform load of 50 pounds per linear foot applied horizontally MATERIALS AND FINISHES A. Aluminum: Provide alloy and temper recommended by aluminum producer or finisher for type of use and finish indicated, and with not less than the strength and durability properties of the alloy and temper designated below for each aluminum form required. 1. Extruded Bars and Shapes: Alloy 6063-T6 meeting ASTM Extruded Pipe and Tube: Alloy 6063-T6 meeting ASTM B Plate and Sheet: Alloy 6061-T6 meeting ASTM B Castings: Alloy 356-T6 meeting ASTM B26. B. Aluminum Finish: All exposed aluminum shall be anodized with an architectural anodic coating. 1. Class I Clear Anodized Finish: AA-M32C22A41 (Medium satin directional textured mechanical finish; chemical etch, medium matte; 0.7 mil minimum thick clear anodic coating). C. Fasteners: All fasteners shall be Type 304 stainless unless otherwise indicated. Do not use metals which are corrosive or incompatible with materials joined. I Provide concealed fasteners for interconnection of handrail and railing components and for their attachment to other work except where exposed fasteners are unavoidable. 2. Provide Phillips flat-head machine screws or internally threaded tubular rivets for exposed fasteners. D. Anchors: Provide anchors of proper type, size, and material for type of loading and installation condition shown, as recommended by manufacturer unless otherwise indicated. 1. Use Type 304 stainless steel anchors for exterior locations and elsewhere as required for corrosion resistance. 2. Use adhesive type anchors set into concrete or masonry work. Conform with SECTION 03300, PART 2.04 L. E. Bituminous Paint: SSPC-Paint 12 (cold-applied asphalt mastic) FABRICATION A. Fabricate handrails and railings to design, dimensions and details shown. Provide handrail and railing members in sizes and profiles indicated, with supporting posts and brackets of size and spacing shown, but not less than required to support design loadings indicated. 1. Rails and Posts: Fabricate rails and posts from anodized aluminum pipe with nominal size of inches, Schedule 40. Provide post reinforcement of 1.60 inch diameter solid aluminum reinforcing bar. 2. Fittings: Shall be of wrought aluminum. Tee-fittings and elbows that are fabricated from more than one piece shall be of welded construction with no weld marks visible when the fitting is installed. 3. Connector Sleeves: Internal connector sleeves shall be of extruded aluminum. 4. Mounting Flanges: a. Floor flanges shall be of cast aluminum. b. Heavy-duty floor flanges shall be of cast aluminum with a solid aluminum reinforcing bar.

3 c. Fascia flanges shall be of aluminum with a solid aluminum reinforcing bar. 5. Toe Boards: Shall be of extruded aluminum. B. Fabricate railings and hand rails for interconnection of members by means of railing manufacturer's standard concealed mechanical fasteners and fittings. Fabricate members and fittings to produce flush, smooth, rigid, hairline joints. C. Form bends by use of prefabricated elbow fittings and radius bends, as applicable, except where configuration indicated requires bending of railing members. D. Form simple and compound curves by bending in jigs to produce uniform curvature for each repetitive configuration required. Maintain profile of member throughout entire bend without buckling, twisting or otherwise deforming exposed surfaces of handrail and railing components. E. For exterior handrails and railings and those exposed to moisture from other sources, provide weepholes or other means for evacuation of entrapped water in hollow sections of railing members. F. Where indicated, provide toe boards at railings around openings and at edge of open-sided floors and platforms. Fabricate to dimensions and details shown, or if not shown, provide toe boards 4" high. Conform to safety requirements of ANSI A21.I. G. Provide manufacturer's standard mounting brackets, flanges, miscellaneous fittings and anchors for interconnection of handrail and railing members to other work. Fabricate and space anchorage devices as indicated and as required to provide adequate support. Coordinate anchorage devices with supporting structure CHAIN LINK FENCE FABRIC AND FASTENERS A. Shall be 42 inch height, 2 inch mesh, fabricated from Number 9 ASWG steel wire with both top and bottom selvages twisted and barbed, conforming to ASTM A392. B. Fabric shall be galvanized after weaving in accordance with ASTM A392, Class 2. Coating shall be applied in a continuous process and shall not be applied to the fabric in roll form. C. Wire ties shall be factory formed Number 9 ASWG galvanized steel wire capable of withstanding a 180 degree bend over its own diameter without fracture of the wire or loss of adherence of coating. PART 3 - EXECUTION 3.01 PREPARATION A. Take field measurements prior to preparation of shop drawings and fabrication where possible. Do not delay job progress. Allow for adjustments during installation where taking field measurements before fabrication might delay work. B. Coordinate setting drawings, diagrams, templates, instructions, and directions for installation of anchorage devices INSTALLATION A. Install all handrails and railings in accordance with approved shop drawings, installation details, and manufacturer's instructions to provide a complete installation that is firmly mounted, level, and is in true alignment with established lines or structures. 1. Fix exposed connections accurately together to form tight, hairline joints. 2. Perform cutting, drilling and fitting required for installation. Do not weld, cut or abrade surfaces of components which have been coated or finished after fabrication, and are intended for field connection by mechanical means without further cutting or fitting. 3. Adjust handrails and railings prior to anchoring to ensure matching alignment at abutting joints. 4. Space posts at intervals indicated, or if not indicated, as required by design loadings.

4 B. Coat concealed surfaces of aluminum components which will be in contact with dissimilar materials such as grout, concrete, masonry, or dissimilar metals, with a heavy coat of bituminous paint. C. Anchoring Posts: 1. Anchor posts to concrete with adhesive type anchors conforming to Section Part 2.04 K. 2. Anchor posts to metal surfaces with manufacturer's standard fittings designed for this purpose. 3. Provide removable railing sections where indicated using slip-fit metal sockets. Accurately locate sockets to match post spacing. D. Railing Connections: 1. Permanently connect railing components together using manufacturer's standard mechanical joinery method and fittings. 2. Seal recessed holes of exposed locking screws using plastic filler cement colored to match finish of handrails and railings. E. Anchoring Railing Ends: 1. Anchor railing ends into concrete or masonry with manufacturer's standard fittings designed for this purpose. 2. Anchor railing ends to metal surfaces with manufacturer's standard fittings using concealed fasteners. F. Expansion Joints: 1. Provide expansion joints as needed to allow for thermal expansion, not to exceed 40 feet. 2. Provide slip-joint internal sleeve extending 2 inches beyond joint on either side. Fasten internal sleeve securely to one side. 3. Locate joint within 6 inches of post. G. Secure handrails to walls with manufacturer's standard brackets and end fittings. 1. For concrete or solid masonry, use solid type anchors. 2. For hollow masonry, use toggle bolts. H. Secure chain link fence fabric to outer side of handrail with U-shaped wire ties conforming to diameter of pipe to which attached, clasping pipe and fabric firmly, with ends twisted at least 2 full turns. Bend ends of wire to minimize hazard to persons or clothing. 1. Tie fabric to railing posts, with wire ties spaced 12" on center. 3. Tie fabric to rails, with wire ties spaced 24" on center PROTECTION AND CLEANING A. Protect finishes of railings and handrails from damage during construction period. B. Clean installed railings and handrails using soap and clean water. Do not use acid solution, steel wool, or other harsh abrasives. C. Remove stained or otherwise defective work and replace with new material. END OF SECTION

5 SECTION METAL GRATINGS PART 1 -GENERAL 1.01 SUMMARY A. Section includes the following: 1. Metal bar gratings. 2. Metal frames and supports for gratings. B. Related Work: 1. Section Cast-in-Place Concrete C. References: 1. American Society for Testing and Materials (ASTM): a. ASTM B221 - Aluminum Extruded Bars and Shapes. 2. National Association of Architectural Metal Manufacturers (NAAMM): 1-02 SUBMITTALS a. NAAMM-MBG Metal Bar Grating Manual. A. Product Data: Submit manufacturer's catalog pages including load tables, anchor details and standard installation details. 6. Shop Drawings: Submit for approval shop drawings for the fabrication and erection of all gratings. Include plans, elevations, and details of sections and connections as required. Show type and location of all fasteners QUALITY ASSURANCE A. Preassemble in shop to greatest extent possible to minimize field assembly. B. Disassemble units only as necessary for shipping and handling limitations. C. Clearly mark all units for reassembly and coordinated installation. PART 2 -PRODUCTS 2.01 ALUMINUM RECTANGULAR BAR GRATING A. Structural Requirements: Grating shall be designed and manufactured to meet live load conditions of 100 Ibslsf with maximum deflection of 114 inch for the clear spans indicated on the drawings. Bearing bar depth shall be as recommended by the manufacturer to meet loading requirements, clear span conditions and maximum deflections, but not less than that indicated on the drawings. B. Materials: 1. Bearing bars and banding: Aluminum Type 6063-T6. 2. Cross bars: Aluminum Type 6063-TI.

6 C. Fabrication: 1. Bearing bar spacing: inches on center. 2. Bearing bar depth: based on loading requirements and clear span, but not less than indicated. 3. Bearing bar thickness: 3/16 inch to provide 1 inch space between bars. 4. Top surface of bearing bars: slip resistant. 5. Cross bar spacing: 4 inches on center. 6. Fabricate cutouts in grating sections for penetrations indicated. Arrange cutouts to permit grating removal without disturbing items penetrating grating. 7. Band ends and cuts in grating with bars of same size and material as bearing bars GRATING FRAMES AND SUPPORTS A. Frames and Supports for Gratings: Fabricate from aluminum shapes, plates, and bars of welded construction to sizes, shapes, and profiles indicated and as necessary to receive gratings. Miter and weld connections for perimeter angle frames. Cut, drill, and tap units to receive hardware and similar items. 1. Unless otherwise indicated, fabricate from the same basic material as gratings. 2. Equip units indicated to be cast into concrete with integrally welded anchors. Unless otherwise indicated, space anchors 24 inches on center and provide minimum anchor units in the form of straps inch wide by 114 inch thick by 8 inches long ACCESSORIES A. Provide appropriate fasteners for type, grade, and class required for the approved anchorage system. PART 3 - EXECUTION 3.01 PREPARATION A. Take field measurements prior to preparation of shop drawings and fabrication where possible. Do not delay job progress. Allow for adjustments during installation where taking field measurements before fabrication might delay work. B. Coordinate setting drawings, diagrams, templates, instructions, and directions for installation of grating frames and supports INSTALLATION A. Prior to grating installation, inspect supports for correct alignment and conditions for proper attachment and support of the gratings. Any inconsistencies between contract drawings and supporting structure deemed detrimental to grating placement shall be reported in writing to the Owner's representative prior to placement. B. Install gratings in accordance with shop drawings and standard installation clearances as recommended by NAAMM Metal Bar Grating Manual. C. Protection of Aluminum from Dissimilar Materials: 1. Where aluminum surfaces come into contact with dissimilar metals, surfaces shall be dept from direct contact by approved insulating material. 2. Where aluminum surfaces come into contact with dissimilar materials such as concrete, masonry or lime mortar, aluminum surfaces shall be painted with one coat of bituminous paint.

7 3.03 GRATING ATTACHMENT A. Use attachment system and fasteners to secure gratings to supporting members as recommended by the manufacturer and indicated in the approved shop drawings. END OF SECTION

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