Guide Specification SECTION 05 50 00 - METAL FABRICATIONS NOTE: This guide specification covers the basic requirements for Metal Fabrications. Incorporate this information into the specifications for your project. For any deviations, please discuss with your designated LAWA representative. PART 1 - GENERAL 1.1 SUMMARY A. This Section includes structural support for restroom counter tops, ceiling hung toilet partitions and miscellaneous steel trim. 1.2 PERFORMANCE REQUIREMENTS A. Structural Performance: 1. Counter Tops and Vanities: Provide countertop and vanity framing capable of withstanding the following structural loads without exceeding the allowable design working stress of the materials involved, including anchors and connections, or of exhibiting excessive deflections in any of the components making up the countertops and vanities: a. All deadloads. b. 500 pound live load placed on the countertop and vanity. c. Deflection at Midspan: L/500 times span or 1/8” whichever is less. 2. Tube Framing for Partial Height Walls: Provide tube framing for partial height walls capable of withstanding a deflection not to exceed 2L/1440 of the wall height when subjected to a positive and negative pressure of 5 psf. 1.3 SUBMITTALS A. Product Data: Submit product data for the following: 1. Paint products. B. Shop Drawings: Submit shop drawings detailing the fabrication and erection of each metal fabrication indicated. Include plans, elevations, sections, and details of metal fabrications and their connections. Show anchorage and accessory items. METAL FABRICATIONS 05 50 00 - 1 Revised 09/2012, reformat date 08/2013. Guide Specification 1. For installed products indicated to comply with design loads, include structural analysis data, for information only, signed and sealed by the qualified professional engineer responsible for their preparation. 1.4 QUALITY ASSURANCE A. Fabricator/Installer Qualifications: A firm experienced in producing metal fabrications similar to those indicated for this Project for a minimum of 5 years, with a record of successful in- service performance, with sufficient production capacity to produce required units without causing delay in the work. B. Professional Engineer Qualifications: A professional engineer who is legally qualified to practice in the State of California and who is experienced in providing engineering services of the kind indicated. Engineering services are defined as those performed for installations of metal fabrications that are similar to those indicated for this Project in material, design, and extent. C. Welding: Qualify procedures and personnel according to the following: 1. AWS D1.1, "Structural Welding Code--Steel." 2. AWS D1.3, "Structural Welding Code--Sheet Steel." 3. Certify that each welder has satisfactorily passed AWS qualification tests for welding processes involved and, if pertinent, has undergone recertification. D. Determination of existing structure to accommodate new loads. 1.5 STORAGE, DELIVERY AND HANDLING A. Store metal fabrications in a dry, well-ventilated, weather tight place. Deliver and handle so as to prevent any type of damage to the fabricated work. 1.6 PROJECT CONDITIONS A. Field Measurements: Where metal fabrications are indicated to fit walls and other construction, verify dimensions by field measurements before fabrication and indicate measurements on Shop Drawings. Coordinate fabrication schedule with construction progress to avoid delaying the Work. 1. Established Dimensions: Where field measurements cannot be made without delaying the Work, establish dimensions and proceed with fabricating metal fabrications without field measurements. Coordinate construction to ensure that actual dimensions correspond to established dimensions. Allow for trimming and fitting. METAL FABRICATIONS 05 50 00 - 2 Revised 09/2012, reformat date 08/2013. Guide Specification 1.7 COORDINATION A. Coordinate installation of anchorages for metal fabrications. Furnish setting drawings, templates, and directions for installing anchorages, including sleeves, concrete inserts, anchor bolts, and items with integral anchors, that are to be embedded in concrete or masonry. Deliver such items to Project site in time for installation. PART 2 - PRODUCTS 2.1 METALS, GENERAL A. Metal Surfaces, General: For metal fabrications exposed to view in the completed Work, provide materials with smooth, flat surfaces without blemishes. Do not use materials with exposed pitting, seam marks, roller marks, rolled trade names, or roughness. 2.2 FERROUS METALS A. Steel Plates, Shapes, and Bars: ASTM A 36/A 36M. B. Cold Finished Steel Bars: ASTM A108, grade as selected by fabricator. C. Steel Tubing: Cold-formed steel tubing complying with ASTM A 500, or hot formed steel tubing complying with ASTM A 501. D. Steel Pipe: ASTM A 53, standard weight (Schedule 40) minimum, unless otherwise indicated or required to satisfy the performance requirements; finish as follows: 1. Black finish, unless otherwise indicated. 2. Galvanized finish for exterior installations and where indicated. E. Welding Rods and Bare Electrodes: Select according to AWS specifications for metal alloy welded. 2.3 PAINT A. Shop Primer for Ferrous Metal: Fast-curing, lead- and chromate-free, universal modified-alkyd primer complying with performance requirements in FS TT-P-664; selected for good resistance to normal atmospheric corrosion, compatibility with finish paint systems indicated, and capability to provide a sound foundation for field-applied topcoats despite prolonged exposure. B. Galvanizing Repair Paint: High-zinc-dust-content paint for re-galvanizing welds in steel, complying with SSPC-Paint 20. C. Bituminous Paint: Cold-applied asphalt mastic complying with SSPC-Paint 12, except containing no asbestos fibers, or cold-applied asphalt emulsion complying with ASTM D 1187. METAL FABRICATIONS 05 50 00 - 3 Revised 09/2012, reformat date 08/2013. Guide Specification 2.4 FASTENERS A. General: Provide Type 304 or 316 stainless-steel fasteners for exterior use and zinc-plated fasteners with coating complying with ASTM B 633, Class Fe/Zn 5, where built into exterior walls. Select fasteners for type, grade, and class required. B. Bolts and Nuts: Regular hexagon-head bolts, ASTM A 307, Grade A (ASTM F 568M, Property Class 4.6); with hex nuts, ASTM A 563 (ASTM A 563M); and, where indicated, flat washers. C. Anchor Bolts: ASTM F 1554, Grade 36. D. Machine Screws: ASME B18.6.3 (ASME B18.6.7M). E. Lag Bolts: ASME B18.2.1 (ASME B18.2.3.8M). F. Plain Washers: Round, carbon steel, ASME B18.22.1 (ASME B18.22M). G. Lock Washers: Helical, spring type, carbon steel, ASME B18.21.1 (ASME B18.21.2M). H. Expansion Anchors: Anchor bolt and sleeve assembly of material indicated below with capability to sustain, without failure, a load equal to six times the load imposed when installed in unit masonry and equal to four times the load imposed when installed in concrete, as determined by testing per ASTM E 488, conducted by a qualified independent testing agency. 1. Indoor Expansion Anchor Material: Carbon-steel components zinc-plated to comply with ASTM B 633, Class Fe/Zn 5. 2. Exterior Expansion Anchor Material: Alloy Group 1 or 2 stainless-steel bolts complying with ASTM F 593 (ASTM F 738M) and nuts complying with ASTM F 594 (ASTM F 836M). I. Toggle Bolts: FS FF-B-588, tumble-wing type, class and style as needed. 2.5 FABRICATION, GENERAL A. Shop Assembly: Preassemble items in shop to greatest extent possible to minimize field splicing and assembly. Disassemble units only as necessary for shipping and handling limitations. Use connections that maintain structural value of joined pieces. Clearly mark units for reassembly and coordinated installation. 1. Welded connections may be used where bolted connections are shown. B. Shear and punch metals cleanly and accurately. Remove burrs. C. Ease exposed edges to a radius of approximately 1/32 inch (1 mm), unless otherwise indicated. Form bent-metal corners to smallest radius possible without causing grain separation or otherwise impairing work. METAL FABRICATIONS 05 50 00 - 4 Revised 09/2012, reformat date 08/2013. Guide Specification D. Weld corners and seams continuously along entire line of contact to comply with the following: 1. Use materials and methods that minimize distortion and develop strength and corrosion resistance of base metals. 2. Obtain fusion without undercut or overlap. 3. Remove welding flux immediately. 4. At exposed connections, finish exposed welds and surfaces smooth and blended so no roughness shows after finishing and contour of welded surface matches that of adjacent surface. E. Provide for anchorage of type indicated; coordinate with supporting structure. Fabricate and space anchoring devices and fasteners to secure metal fabrications rigidly in place and to support indicated loads. F. Cut, reinforce, drill, and tap metal fabrications as indicated to receive finish hardware, screws, and similar items. G. Fabricate joints that will be exposed to weather in a manner to exclude water, or provide weep holes where water may accumulate. H. Form exposed work true to line and level with accurate angles and surfaces and straight sharp edges. I. Remove sharp or rough areas on exposed traffic surfaces. J. Form exposed connections with hairline joints, flush and smooth, using concealed fasteners where possible. Use exposed fasteners of type indicated or, if not indicated, Phillips flat-head (countersunk) screws or bolts. Locate joints where least conspicuous. Make up threaded connections tight so that threads are entirely concealed. 2.6 MISCELLANEOUS FRAMING AND SUPPORTS A. General: Provide steel framing and supports indicated and as necessary to complete the Work and which are not a part of the structural framework, including but not limited to countertop and vanities, ceiling hung toilet compartments, framing for partial height walls, mechanical and electrical equipment. B. Fabricate units from structural-steel shapes, plates, and bars of welded construction, unless otherwise indicated. Fabricate to sizes, shapes, and profiles indicated and as necessary to receive adjacent construction retained by framing and supports. Cut, drill, and tap units to receive hardware, hangers, and similar items. C. Framing for Ceiling Hung Toilet Compartments: Provide framing for ceiling hung toilet compartments, coordinated with the partitions and including provisions for partition anchorage as required to sustain imposed loads and to limit deflections to L/360 between hangers, fabricated from the following. 1. Structural Steel Shapes, Plates and Bars: ASTM A36/A36M. METAL FABRICATIONS 05 50 00 - 5 Revised 09/2012, reformat date 08/2013. Guide Specification 2. Modular Structural Framing System: ASTM A569; modular, structural quality steel pre- formed "U" channel framing system with continuous open slot prepared to receive attachment nuts, bolts, straps, threaded rods, beam clamps, hanger rods support brackets and other accessories. Provide manufacturers standard corrosion resistant finish. 3. Provide steel rods, ½” diameter, spaced not more than 36” o.c. Thread rods to receive anchor and stop nuts. Fit hangers with wedge shape washers for full bearing on sloping flanges of support beam. 4. Coordinate installation with toilet compartment manufacturer's written instructions and recommendations. D. Countertop and Vanity Framing: Custom fabricate countertop and vanity framing, using steel shapes and plates, and cold finished mild steel bars at exposed conditions, for support framing and plywood, to the thicknesses, sizes and shapes shown, and as required to produce work of adequate strength and durability, without objectionable deflections. Use proven details of fabrication, as required, to achieve proper assembly and alignment of the various components of the work. 2.7 MISCELLANEOUS STEEL TRIM A. Unless otherwise indicated, fabricate units from structural-steel shapes, plates, and bars of profiles shown with continuously welded joints, and smooth exposed edges. Miter corners and use concealed field splices where possible. B. Provide cutouts, fittings, and anchorages as needed to coordinate assembly and installation with other work. Provide anchors, welded to trim, for embedding in concrete or masonry construction, spaced not more than 6 inches (150 mm) from each end, 6 inches (150 mm) from corners, and 24 inches (600 mm) o.c., unless otherwise indicated. C. Surface Applied Corner Guards: Provide stainless steel corner guards fabricated from angles of sizes shown, or if not shown, of minimum 3-1/2” x 3-1/2” x ¼” thick equal leg angles with ¼” wide taper legs. Drill and countersink legs of angles, for fastening to substrates indicated, with holes spaced 24” on center. Provide corner guard lengths of 42” if not otherwise indicated. 2.8 FINISHES, GENERAL A. Comply with NAAMM's "Metal Finishes Manual for Architectural and Metal Products" for recommendations for applying and designating finishes. B. Finish metal fabrications after assembly. METAL FABRICATIONS 05 50 00 - 6 Revised 09/2012, reformat date 08/2013. Guide Specification 2.9 STEEL AND IRON FINISHES A. Galvanizing: Hot-dip galvanize items as indicated to comply with applicable standard listed below: 1. ASTM A 123, for galvanizing steel and iron products. 2. ASTM A 153/A 153M, for galvanizing steel and iron hardware. B. Preparation for Shop Priming: Prepare uncoated ferrous-metal surfaces by removing oil, grease, and similar contaminants in accordance with SSPC -SP 1 “Solvent Cleaning,” followed with the SSPC surface-preparation specifications listed below and environmental exposure conditions of installed metal fabrications. Surface preparation shall be done after fabrication and immediately prior to shop painting. Apply shop coat of paint within 4 hours after cleaning and before rust bloom occurs. 1. Interiors (SSPC Zone 1A): SSPC-SP 3, "Power Tool Cleaning." C. Apply a minimum of one coat of shop primer to uncoated surfaces of metal fabrications, except those with galvanized finishes and those to be field welded, and those to be embedded in concrete, sprayed-on fireproofing, or masonry, unless otherwise indicated. Comply with SSPC- PA 1, "Paint Application Specification No. 1," for shop painting. 1. Stripe paint corners, crevices, bolts, welds, and sharp edges. 2. Dry Film Thickness of Primer: 2.5 to 3.0 mils, dry film thickness. Apply paint thoroughly and evenly to dry surfaces, free from holidays and pinholes, in accordance with manufacturers directions. D. Stainless Steel 1. Material – Stainless Steel, Type 304 2. Finish – No. 6 3. Corner Radius – 1/8” 4. Taper – ¼” from leg edges 5. Mounting – flat head countersunk screws through shop drilled countersunk holes. PART 3 - EXECUTION 3.1 INSTALLATION, GENERAL A. Fastening to In-Place Construction: Provide anchorage devices and fasteners where necessary for securing metal fabrications to in-place construction. Include threaded fasteners for concrete and masonry inserts, toggle bolts, through-bolts, lag bolts, wood screws, and other connectors. Drill holes for bolts to the exact diameter of the bolt. Provide screws threaded full length to the screw head. B. Cutting, Fitting, and Placement: Perform cutting, drilling, and fitting required for installing metal fabrications. Set metal fabrications accurately in location, alignment, and elevation; with edges and surfaces level, plumb, true, and free of rack; and measured from established lines and levels. METAL FABRICATIONS 05 50 00 - 7 Revised 09/2012, reformat date 08/2013. Guide Specification C. Provide temporary bracing or anchors in formwork for items that are to be built into concrete, masonry, or similar construction. D. Fit exposed connections accurately together to form hairline joints. Weld connections that are not to be left as exposed joints but cannot be shop welded because of shipping size limitations. Do not weld, cut, or abrade surfaces of exterior units that have been hot-dip galvanized after fabrication and are for bolted or screwed field connections. E. Field Welding: Comply with the following requirements: 1. Use materials and methods that minimize distortion and develop strength and corrosion resistance of base metals. 2. Obtain fusion without undercut or overlap. 3. Remove welding flux immediately. 4. At exposed connections, finish exposed welds and surfaces smooth and blended so no roughness shows after finishing and contour of welded surface matches that of adjacent surface. 3.2 INSTALLING MISCELLANEOUS FRAMING AND SUPPORTS A. General: Install framing and supports to comply with requirements of items being supported, including manufacturers' written instructions and requirements . B. Ceiling Hung Toilet Partitions: Anchor supports securely to, and rigidly brace from, overhead building structure. 3.3 ADJUSTING AND CLEANING A. Touchup Painting: Immediately after erection, clean field welds, bolted connections, and abraded areas of shop paint, and paint exposed areas with the same material as used for shop painting to comply with SSPC-PA 1 for touching up shop-painted surfaces. 1. Apply by brush or spray to provide a minimum 2.0-mil (0.05-mm) dry film thickness. END OF SECTION 05 50 00 METAL FABRICATIONS 05 50 00 - 8 Revised 09/2012, reformat date 08/2013. Guide Specification SECTION 05 75 30.13 – COLUMN COVERS PART 1 - GENERAL 1.1 SUMMARY A. Section Includes: 1. Column covers with metal and glass finish with LED Light Panel System. NOTE: LAWA has developed this specification standard for column covers in order to pro- vide a unifying design for the public areas of the terminals while providing long term durabil- ity and ease of maintenance. 1.2 PERFORMANCE REQUIREMENTS A. Control of Corrosion: Prevent galvanic action and other forms of corrosion by insulating metals and other materials from direct contact with incompatible materials. 1.3 ACTION SUBMITTALS A. Product Data: For each type of product indicated. Include finishing materials. B. Shop Drawings: Show fabrication and installation details for column covers. 1. Include plans, elevations, component details, and attachments to other work. 2. Indicate materials and profiles of each column cover, fittings, joinery, finishes, fasteners, anchorages, and accessory items. 3. Indicate LED light panel. C. Samples for Verification: 1. Stainless Steel: For each type of exposed finish required, prepared on 12-inch square Samples of metal of same thickness and material indicated for the Work. 2. Laminated Glass with Colored Interlayer: 18 inches square. 1.4 INFORMATIONAL SUBMITTALS A. Coordination Drawings: Show dimensions of structural columns, fireproofing (if any), attachments, and necessary clearances. B. Product Certificates: For glass and glazing products, from manufacturer. COLUMN COVERS 05 75 30.13 - 1 Column Covers Guide Specification 1.5 CLOSEOUT SUBMITTALS A. Maintenance Data: For stainless-steel finish to include in maintenance manuals. 1.6 QUALITY ASSURANCE A. Installer Qualifications: Fabricator of products. B. Source Limitations for Glass: Obtain laminated glass from single source from single manufacturer. C. Mockups: Build mockups to demonstrate aesthetic effects and set quality standards for fabrication and installation. 1. Construct one mockup of each type of column cover. 2. Approved mockups may not become part of the completed Work. 3. All mockups shall be constructed at the jobsite. D. Preinstallation Conference: Conduct conference at Project site. E. Column Cover installation shall commence only upon receiving written LAWA approval of the Mock Up. 1.7 DELIVERY, STORAGE, AND HANDLING A. Deliver column covers wrapped in protective coverings and strapped together in suitable packs or in heavy-duty cartons. Remove protective coverings before they stain or bond to finished surfaces. B. Store products on elevated platforms in a dry location. 1.8 PROJECT CONDITIONS A. Field Measurements: Verify actual locations of walls, columns, beams, and other construction contiguous with column covers by field measurements before fabrication and indicate measurements on Shop Drawings. 1.9 COORDINATION A. Coordinate installation of anchorages for column covers. Installation of anchors shall not damage the column reinforcement. Furnish setting drawings, templates, and directions for installing anchorages, including concrete inserts, anchor bolts, and items with integral anchors, that are to be embedded in concrete or masonry. Deliver such items to Project site in time for installation. COLUMN COVERS 05 75 30.13 - 2 Column Covers