SECTION 05720 PART 1 - GENERAL ORNAMENTAL HANDRAILS AND RAILINGS 1.1 SUMMARY A. Section Includes: 1. Ornamental Handrails and Railings. 2. Glazed Panel Railings. 1.2 DEFINITIONS A. Guardrail: System of building components located near open sides of elevated walking surfaces for purpose of minimizing possibility of accidental fall from walking surface to lower level. B. Handrail: Horizontal or sloping rail grasped by hand for guidance or support, and for purpose of minimizing possibility of accidental falls on adjacent walking surface. 1.3 SYSTEM REQUIREMENTS A. Design Requirements: Drawings are diagrammatic and are intended to establish basic dimension of units, sight lines, and profiles of units. 1. Fabricator: Responsible for designing system, including anchorage to structural system and necessary modifications to meet specified requirements and maintain visual design concepts. 2. Employ registered professional engineer, licensed to practice structural engineering in jurisdiction where Project is located, to engineer each component of handrail and railing systems. 3. Provide concealed fastening wherever possible. 4. Extend railings 12 inches beyond top riser and 12 inches beyond plus one tread beyond bottom riser where not continuous. 5. Make clear distance between components of guardrail infill such that 4 inch diameter sphere cannot pass through opening. B. Structural Requirements: 1. Handrails: capable of withstanding following loads applied as indicated. 2. Uniform load of 50 PLF applied in any direction. 3. Concentrated and uniform loads above need not be applies simultaneously. C. Guardrail System: Capable of withstanding following loads applied as directed. 1. Concentrated load of 200 pounds applied at any point and in any direction at top of guardrail system. 2. Uniform load of 50 PLF applied horizontally perpendicular to plane of guardrail and vertically, simultaneously, at top of guardrail system to transmit load to supports. 3. Concentrated and uniform loads above need not be applies simultaneously. D. Infill Area of Guardrail System: Intermediate rails, baluster, pickets and panel fillers shall withstand horizontal load of 50 pounds on area not to exceed 1 square foot at any point. Above load need not be assumed to be acting concurrently with horizontal loads on railing system. E. Interface with Adjacent Systems: Integrate design and connections with adjacent construction. Accommodate allowable tolerances and deflections for structural members in installation. 1.4 SUBMITTALS A. General: Submit in accordance with Section 01330. B. Product Data: Submit for grout, glass, primer, and finishes. 1. Color Charts: Items requiring color selection. C. Shop Drawings: Indicate locations and complete fabrication details, materials, finishes, and installation details. BOKA Powell Project No. 6671-06082 05720-1 08 February 2007
1. Stamp with seal and signature of professional engineer responsible for design. D. Changed Condition Drawings: Submit in accordance with Section 01330. E. Samples: Submit each type of metal finish and color and glass, where normal color and texture variations are to be expected, include two or more samples, showing limits of variation. F. Calculations: Submit for handrails and railings. 1. Calculations: Prepared by and bear seal and signature of registered Professional Engineer. G. Informational Submittals: Submit following packaged separately from other submittals: 1. Support Reactions Design Data: Submit in accordance with Section 01330. 2. Certifications specified in Quality Assurance article. 3. Manufacturer's instructions. 1.5 QUALITY ASSURANCE A. Engineer Qualifications: Registered professional engineer licensed to practice structural engineering in jurisdiction where Project is located, with minimum of five years [documented] experience in design of handrail and railing systems. B. Fabricator Qualifications: Company specializing in fabricating work specified in this Section with minimum five years experience. C. Welder Qualifications: AWS certified within past 12 months for each type of weld required. Maintain current certification for duration of Project. D. Regulatory Requirements: Conform to ADA Accessibility Guidelines for Buildings and Facilities (ADAAG) or local code if more stringent requirements are applicable for installing work for accessibility to handicapped. E. Regulatory Requirements: Conform to requirements of local building codes and authorities having jurisdiction over Project. F. Certifications: 1. Certificates verifying AWS qualifications for each welder employed on Project. 2. Fabricator's certification that products furnished for Project meet or exceed specified requirements. 3. Engineering certifications. 1.6 FIELD SAMPLES A. General: Comply with Section 01400. 1. Construct field sample 10 feet long by 42 inches wide as indicated. 2. Locate where directed. 3. Accepted sample may remain as part of Work. PART 2 - PRODUCTS 2.1 MANUFACTURERS A. Pre-Engineered Glazed Panel Railings: 1. Exterior Aluminum and Glass Railings: [ ]. 2. Accepted Substitute in accordance with Section 01600. 2.2 MATERIALS A. Aluminum: 1. Extruded Bar and Shape: ASTM B221, 6063-T6 2. Extruded Pipe and Tube: ASTM B429, 6063-T6 3. Sheet: ASTM B209, 3003 or 5005 4. Castings: B26/B26M Alloy 514.0. 5. Handrail Connectors: Julius Blum and Co., Inc., Carlstadt, NJ. 6. B. Glass: Type: Tempered Safety Glass a. 1. Standard: ASTM C1048, Kind FT, Condition A, Type I. 2. Color: Clear-Class 1. BOKA Powell Project No. 6671-06082 05720-2 08 February 2007
3. Thickness: ½ inch minimum. B. Bituminous Paint: Cold-applied asphalt mastic, comply with SSPC Paint 12, for aluminum railings. C. E. Non-Shrink Grout: Premixed, factory packaged, non-ferrous aggregate, non-staining, shrinkage-resistant, non-corrosive, non-gaseous, ASTM C1107. 1. Minimum Strength at 28 Days: 5000 PSI. 2. Acceptable Products: a. Masterflow 713, Master Builders, Cleveland, OH. b. Euco N.S., Euclid Chemical Co., Cleveland, OH. c. Crystex, L&M Construction Chemicals, Omaha, NE. d. SikaGrout 212, Sika Corporation, Lyndhurst, NJ. e. Sonogrout 10K, Sonneborn Building Products, Minneapolis, MN. f. Five Star Grout by US Grout Corp, Fairfield, CT. g. Accepted Substitute in accordance with Section 01600. D. Fasteners: Provide zinc-coated for exterior use 1. Bolts and Nuts: Regular hexagon head type, ASTM A307, Grade A. 2. Lag Bolts: Square head type, FS FF-B-561. 3. Machine Screws: Cadmium plated steel, FS FF-S-92. 4. Wood Screws: Flat head carbon steel, FS FF-5111. 5. Plain Washers: Round, carbon steel, FS FF-W-92. 6. Masonry Anchorage Devices: Expansion shields, FS FF-S-325. 7. Toggle Bolts: Tumble-Wing Type FS FF-B-588, type class and style required. 8. Lock Washers: Helical spring type, carbon steel, FS FF-W-84. 2.3 ORNAMENTAL HANDRAILS AND RAILINGS FABRICATION A. General: Verify dimensions on site prior to fabrication. 1. Comply with ADAAG requirements. Maximum handrail size: [1-1/2 inches OD. 2. Fabricate to support design loads specified. 3. Fit and shop assemble in largest practical sizes. 4. Fabricate materials straight and true, without scratches, grind marks, scars, creases, buckles, ripples, or chatter marks, free from surface blemishes. 5. Fabricate panels to appear visually flat. B. Connections: 1. Pre-Engineered Glazed Panel Railings: Provide inside profile sleeves at railing, butt joints; exposed fasteners are not permitted. C. Brackets, Flanges, Fittings, and Anchors: Provide manufacturer's standard wall brackets, flanges, miscellaneous fittings and anchors for interconnection of handrail and railing members to other work. 1. For railing posts set in concrete, provide blocked out opening, not less than 6 inches deep and with inside dimensions not less than 1/2 inch greater than outside dimension of post. 2. Railing Brackets: Comply with ADA requirements. D. Joints: Mill to tight, hairline fit: Form joints exposed to weather to exclude water penetration. E. Ends: Capped. F. Inserts: Embedded in concrete or masonry work. Provide galvanized or cadmium-coated inserts for exterior work. G. Anchors: Provide toothed steel or lead-shield expansion bolt devices for drilled-in-place anchors. H. H. Glass Panels: Provide proper clearance and bite on glass. I. I. Clear distance between intermediate rails or balusters shall be such that sphere with diameter of 4 inches cannot pass through any opening. J. J. Removable Railing Socket: Cast into concrete to receive removable railing posts. Socket: Galvanized malleable iron: No. 66 ground socket by R & B Wagner, Inc., Milwaukee, WI. BOKA Powell Project No. 6671-06082 05720-3 08 February 2007
K. K. Bends: Form by prefabricated elbow fittings and radius bends, except where configuration requires bending of railing members. PART 3 - EXECUTION 3.1 EXAMINATION A. Examine conditions and proceed with Work in accordance with Section 01400. 1. Coordinate setting drawings, templates, and instructions for installation of concrete, inserts, and anchor bolts embedded in concrete or masonry. 3.2 ORNAMENTAL HANDRAILS AND RAILINGS INSTALLATION A. A. Fit exposed connections to form tight, hairline joints. 1. Set work accurately in location, set posts and align to within 1/4 inch in 12 feet. Set rails horizontally or parallel to rake of steps or ramp to within 1/4 inch in 12 feet. 2. Do not weld, cut or abrade railings which have been finished after fabrication and are to be field connected by mechanical means. 3. Do not place masking tape or other similar materials to faces of glass or metal. B. Coat concealed surfaces of aluminum, which will be in contact with grout, concrete, masonry, wood, or dissimilar metals, with heavy coat of bituminous paint. C. C. Posts: Anchor posts by grouting into concrete. 1. Locate posts not less than 6 inches from control and expansion joints and from openings in concrete. 2. Non-Shrink Grout: Fill annular space solid with grout between posts and edges of openings to receive post. a. Leave anchorage joint exposed; wipe off excess grout and leave 1/8 inch build-up; slope away from post. 3. Anchor posts to metal base plates by a continuous weld. D. D. Anchoring Railing Ends: 1. Anchor railing ends into concrete or masonry with manufacturer's standard fittings. 2. Anchor railing ends to metal surfaces with manufacturer's standard fittings using concealed fasteners. E. E. Ornamental Handrails: Secure to walls with manufacturer's standard wall brackets. Cap ends. 1. Concrete or Solid Masonry: Use drilled-in expansion shields and concealed hanger bolts. 2. Hollow Masonry: Use toggle bolts with square heads. 3. Metal Stud Partitions: Attach to metal grounds with toggle bolts, or to wood blocking with lag bolts. F. F. Infill: 1. Glass Panels: Typically, position glass infill in relation to adjacent surfaces to prevent passage of sphere with outside diameter of not more than 4 inches unless more stringent requirement by Code. G. Installation of Glass Panels: 1. Glazed Panel Railings: Install to comply with railing manufacturer's instructions, beginning with erection of posts and other metal railing components, followed by setting of factory-cut glass panels H. Expansion Joints: At exterior applications, provide slip joint with internal sleeve extending 2 inches beyond joint on each side. 1. Fasten sleeve to one side only. 2. Locate expansion joints within 6 inches of post. 3. Provide at intervals of maximum 20 feet on center. 3.3 ADJUSTING, CLEANING AND PROTECTION BOKA Powell Project No. 6671-06082 05720-4 08 February 2007
A. Protection: Comply with Section 01740. Protect finishes of railings and handrails from damage during construction by use of temporary protective coverings approved by railing manufacturer. Remove protective covering at project completion. Restore finishes damaged during installation and construction period. B. Protect finished installation under provisions of Section 01500. END OF SECTION BOKA Powell Project No. 6671-06082 05720-5 08 February 2007