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HomeMy WebLinkAbout05 73 00 Decorative Metal Railings.docPEDCOR SQUARE; BUILDING 5 05 73 00 - PEDCOR SQUARE Issue Date 12.18.15 DECORATIVE METAL RAILINGS PEDCOR SQUARE; BUILDING 5 SECTION 05 73 00 - DECORATIVE METAL RAILINGS PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this section. 1.2 SUMMARY A. Section Includes: 1. Steel and iron decorative railings. B. Related Sections: 1. Refer to Section 09 91 00 “Painting” and 09 97 01 “High Performance Coatings” for additional information. 1.3 PERFORMANCE REQUIREMENTS A. Delegated Design: Design railings, including comprehensive engineering analysis by a qualified professional engineer, using performance requirements and design criteria indicated. B. General: In engineering railings to withstand structural loads indicated, determine allowable design working stresses of railing materials based on the following: 1. Steel: 72 percent of minimum yield strength. C. Structural Performance: Railings shall withstand the effects of gravity loads and the following loads and stresses within limits and under conditions indicated: 1. Handrails and Top Rails of Guards: a. Uniform load of 50 lbf/ft. applied in any direction. b. Concentrated load of 200 lbf applied in any direction. c. Uniform and concentrated loads need not be assumed to act concurrently. 2. Infill of Guards: a. Concentrated load of 50 lbf applied horizontally on an area of 1 sq. ft. b. Infill load and other loads need not be assumed to act concurrently. D. Thermal Movements: Allow for thermal movements from ambient and surface temperature changes acting on exterior metal fabrications by preventing buckling, opening of joints, overstressing of components, failure of connections, and other detrimental effects. 1. Temperature Change: 120 deg F, ambient; 180 deg F, material surfaces. E. Control of Corrosion: Prevent galvanic action and other forms of corrosion by insulating metals and other materials from direct contact with incompatible materials. PEDCOR SQUARE; BUILDING 5 05 73 00 - PEDCOR SQUARE Issue Date 12.18.15 DECORATIVE METAL RAILINGS PEDCOR SQUARE; BUILDING 5 1.4 SUBMITTALS A. Product Data. B. Shop Drawings: Include plans, elevations, sections, details and attachments to other work. 1. For installed products indicated to comply with design loads, include structural analysis data signed and sealed by the qualified professional engineer responsible for their preparation. C. Samples. D. Qualification Data: For qualified professional engineer and testing agency. E. Welding certificates. F. Product Test Reports: Based on evaluation of comprehensive tests performed by a qualified testing agency, according to ASTM E 894 and ASTM E 935. G. Preconstruction test reports. 1.5 QUALITY ASSURANCE A. Source Limitations: Obtain each type of railing from single source from single manufacturer. B. Welding Qualifications: Qualify procedures and personnel according to the following: 1. AWS D1.1, "Structural Welding Code - Steel." PART 2 - PRODUCTS 2.1 METALS, GENERAL A. Metal Surfaces, General: Provide materials with smooth surfaces, without seam marks, roller marks, rolled trade names, stains, discolorations, or blemishes. B. Brackets, Flanges, and Anchors: Same metal and finish as supported rails unless otherwise indicated. C. Product Options: Drawings indicate size, profiles, and dimensional requirements of railings and are based on the specific system indicated. See Section 01 60 00 "Product Requirements." 1. Do not modify intended aesthetic effects, as judged solely by Architect, except with Architect's approval. If modifications are proposed, submit comprehensive explanatory data to Architect for review. 2.2 STEEL AND IRON A. Recycled Content of Steel Products: Provide products with average recycled content of steel products so post-consumer recycled content plus one-half of pre-consumer recycled content is not less than 25 percent. PEDCOR SQUARE; BUILDING 5 05 73 00 - PEDCOR SQUARE Issue Date 12.18.15 DECORATIVE METAL RAILINGS PEDCOR SQUARE; BUILDING 5 B. Tubing: ASTM A 500 (cold formed) or ASTM A 513. C. Bars: Hot-rolled, carbon steel complying with ASTM A 29, Grade 1010. D. Plates, Shapes, and Bars: ASTM A 36. 2.3 COPPER ALLOYS A. Copper and Copper Alloys, General: Provide alloys indicated and with temper to suit application and forming methods, but with strength and stiffness not less than Temper H01 (quarter hard) for plate, sheet, strip, and bars and Temper H55 (light drawn) for tube and pipe. B. Extruded Shapes, Brass: ASTM B 249, Alloy UNS C36000 (free-cutting brass). C. Castings, Brass: Sand castings complying with ASTM B 584, Alloy UNS C85200 (high-copper yellow brass). 2.4 FASTENERS A. Fastener Materials: Unless otherwise indicated, provide the following: 1. Galvanized-Steel Components: Plated-steel fasteners complying with ASTM B 633, Class Fe/Zn 25 for electrodeposited zinc coating. 2. Dissimilar Metals: Type 304 stainless-steel fasteners. 3. Copper-Alloy (Brass) Components: Silicon bronze (Alloy 651 or Alloy 655) fasteners where concealed; brass (Alloy 260 or Alloy 360) fasteners where exposed. B. Anchors, General: Anchors capable of sustaining, without failure, a load equal to six times the load imposed when installed in unit masonry and four times the load imposed when installed in concrete, as determined by testing according to ASTM E 488, conducted by a qualified independent testing agency. 2.5 MISCELLANEOUS MATERIALS A. Universal Shop Primer: Fast-curing, lead- and chromate-free, universal modified-alkyd primer complying with MPI#79 and compatible with topcoat. 1. Use primer containing pigments that make it easily distinguishable from zinc-rich primer. B. Epoxy Zinc-Rich Primer: Complying with MPI#20 and compatible with topcoat. 2.6 FABRICATION A. General: Fabricate railings to comply with requirements indicated for design, dimensions, member sizes and spacing, details, finish, and anchorage, but not less than that required to support structural loads. PEDCOR SQUARE; BUILDING 5 05 73 00 - PEDCOR SQUARE Issue Date 12.18.15 DECORATIVE METAL RAILINGS PEDCOR SQUARE; BUILDING 5 2.7 GENERAL FINISH REQUIREMENTS A. Comply with NAAMM's "Metal Finishes Manual for Architectural and Metal Products" for recommendations for applying and designating finishes. B. Protect mechanical finishes on exposed surfaces from damage by applying a strippable, temporary protective covering before shipment. C. Appearance of Finished Work: Noticeable variations in same piece are not acceptable. Variations in appearance of abutting or adjacent pieces are acceptable if they are within one- half of the range of approved Samples. Variations in appearance of other components are acceptable if they are within the range of approved Samples and are assembled or installed to minimize contrast. D. Provide exposed fasteners with finish matching appearance, including color and texture, of railings. 2.8 STEEL AND IRON FINISHES A. For non-galvanized-steel railings, provide non-galvanized ferrous-metal fittings, brackets, fasteners, and sleeves, except galvanize anchors to be embedded in exterior concrete or masonry. B. Preparing Non-galvanized Items for Shop Priming: Prepare uncoated ferrous-metal surfaces to comply with SSPC-SP 6/NACE No. 3, "Commercial Blast Cleaning." and requirements indicated below: 1. Exterior Railings: SSPC-SP 6/NACE No. 3, "Commercial Blast Cleaning." 2. Railings Indicated to Receive Zinc-Rich Primer: SSPC-SP 6/NACE No. 3, "Commercial Blast Cleaning." 3. Railings Indicated to Receive Primers Specified in Division 09 Section "High-Performance Coatings": SSPC-SP 6/NACE No. 3, "Commercial Blast Cleaning." 4. Other Railings: SSPC-SP 7/NACE No. 4, "Brush-off Blast Cleaning." C. Primer Application: Apply shop primer to prepared surfaces of railings unless otherwise indicated. Comply with requirements in SSPC-PA 1, "Paint Application Specification No. 1: Shop, Field, and Maintenance Painting of Steel," for shop painting. Primer need not be applied to surfaces to be embedded in concrete or masonry. 1. Shop prime uncoated railings with universal shop primer unless zinc-rich primer is indicated. 2. Do not apply primer to galvanized surfaces. D. Shop-Painted Finish: Comply with Division 09 Section "Exterior Painting," “High Performance Coatings” and “High Performance Coatings-Aliphatic Polyurethane.” 1. Color: As selected by Architect from manufacturer's full range. 2.9 COPPER-ALLOY FINISHES A. Finish designations for copper alloys comply with the system for designating copper-alloy finish systems defined in NAAMM's "Metal Finishes Manual for Architectural and Metal Products." PEDCOR SQUARE; BUILDING 5 05 73 00 - PEDCOR SQUARE Issue Date 12.18.15 DECORATIVE METAL RAILINGS PEDCOR SQUARE; BUILDING 5 B. Medium-Satin Finish, Lacquered: M32-O6x (Mechanical Finish: directionally textured, medium satin; Coating: clear, organic, air dried, as specified below). 1. Clear, Organic Coating: Lacquer specified for copper alloys, applied by air spray in two coats per manufacturer's written instructions, with interim drying, to a total thickness of 1 mil. PART 3 - EXECUTION 3.1 INSTALLATION, GENERAL A. Fit exposed connections together to form tight, hairline joints. B. Perform cutting, drilling, and fitting required for installing railings. Set railings accurately in location, alignment, and elevation; measured from established lines and levels and free of rack. C. Adjust railings before anchoring to ensure matching alignment at abutting joints. 3.2 RAILING CONNECTIONS A. Non-welded Connections: Use mechanical or adhesive joints for permanently connecting railing components. B. Welded Connections: Use fully welded joints for permanently connecting railing components. 3.3 ANCHORING POSTS A. Form or core-drill holes not less than 5 inches deep and 3/4 inch larger than OD of post for installing posts in concrete. Clean holes of loose material, insert posts, and fill annular space between post and concrete with non-shrink, non-metallic grout, mixed and placed to comply with anchoring material manufacturer's written instructions. B. Cover anchorage joint with flange of same metal as post, welded to post after placing anchoring material or attached to post with set screws. C. Anchor posts to metal surfaces with flanges, angle type, or floor type as required by conditions, connected to posts and to metal supporting members as follows: 1. For steel railings, weld flanges to posts and bolt to metal-supporting surfaces. D. Install removable railing sections, where indicated, in slip-fit metal sockets cast in concrete. 3.4 ATTACHING RAILINGS A. Anchor railing ends to concrete and masonry with flanges connected to railing ends and anchored to wall construction with anchors and bolts. B. Anchor railing ends to metal surfaces with flanges bolted to metal surfaces and connected to railing ends using non-welded connections. 1. Attach handrails to walls with wall brackets except where end flanges are used. PEDCOR SQUARE; BUILDING 5 05 73 00 - PEDCOR SQUARE Issue Date 12.18.15 DECORATIVE METAL RAILINGS PEDCOR SQUARE; BUILDING 5 C. Secure wall brackets and railing end flanges to building construction. 3.5 CLEANING A. Clean copper alloys according to metal finisher's written instructions in a manner that leaves an undamaged and uniform finish matching approved Sample. 3.6 PROTECTION A. Protect finishes of railings from damage during construction period with temporary protective coverings approved by railing manufacturer. Remove protective coverings at time of Substantial Completion. B. Restore finishes damaged during installation and construction period so no evidence remains of correction work. Return items that cannot be refinished in the field to the shop; make required alterations and refinish entire unit, or provide new units. END OF SECTION 05 73 00