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HomeMy WebLinkAbout05 50 00 Metal Fabrications.DOCPEDCOR SQUARE; BUILDING 5 05 50 00 - PEDCOR SQUARE Issue Date 12.18.15 METAL FABRICATIONS PEDCOR SQUARE; BUILDING 5 SECTION 05 50 00 - METAL FABRICATIONS 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 framing and supports for ceiling-hung toilet compartments. 2. Steel framing and supports for overhead doors. 3. Steel framing and supports for mechanical and electrical equipment. 4. Steel framing and supports for applications where framing and supports are not specified in other Sections. 5. Elevator machine beams, hoist beams, and divider beams. 6. Steel shapes for supporting elevator door sills. 7. Steel girders for supporting wood frame construction. 8. Shelf angles. 9. Metal ladders. 10. Metal ship’s ladders. 11. Elevator pit sump covers. 12. Miscellaneous steel trim. 13. Metal bollards. 14. Pipe and Downspout guards. 15. Abrasive metal nosings and thresholds. 16. Metal downspout boots. 17. Loose bearing and leveling plates for applications where they are not specified in other Sections. B. Products furnished, but not installed, under this Section include the following: 1. Loose steel lintels. 2. Anchor bolts, steel pipe sleeves, slotted-channel inserts, and wedge-type inserts indicated to be cast into concrete or built into unit masonry. 3. Steel weld plates and angles for casting into concrete for applications where they are not specified in other Sections. C. Related Requirements: 1. Section 03 30 00 "Cast-in-Place Concrete" for installing anchor bolts, steel pipe sleeves, slotted-channel inserts, wedge-type inserts, and other items cast into concrete. 2. Section 04 20 00 "Unit Masonry" for installing loose lintels, anchor bolts, and other items built into unit masonry. 3. Section 05 12 00 "Structural Steel Framing." PEDCOR SQUARE; BUILDING 5 05 50 00 - PEDCOR SQUARE Issue Date 12.18.15 METAL FABRICATIONS PEDCOR SQUARE; BUILDING 5 1.3 COORDINATION A. Coordinate selection of shop primers with topcoats to be applied over them. Comply with paint and coating manufacturers' written recommendations to ensure that shop primers and topcoats are compatible with one another. B. Coordinate installation of metal fabrications that are anchored to or that receive other work. 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. 1.4 ACTION SUBMITTALS A. Product Data: For the following: 1. Nonslip aggregates and nonslip-aggregate surface finishes. 2. Metal nosings. 3. Paint products. 4. Grout. B. Shop Drawings: Show fabrication and installation details. Include plans, elevations, sections, and details of metal fabrications and their connections. Show anchorage and accessory items. Provide Shop Drawings for the following: 1. Steel framing and supports for ceiling-hung toilet compartments. 2. Steel framing and supports for overhead doors. 3. Steel framing and supports for mechanical and electrical equipment. 4. Steel framing and supports for applications where framing and supports are not specified in other Sections. 5. Elevator machine beams, hoist beams, and divider beams. 6. Steel shapes for supporting elevator door sills. 7. Steel girders for supporting wood frame construction. 8. Shelf angles. 9. Metal ladders. 10. Elevator pit sump covers. 11. Miscellaneous steel trim. 12. Metal bollards. 13. Pipe and Downspout guards. 14. Abrasive metal nosings and thresholds. 15. Metal downspout boots. 16. Loose steel lintels. C. Samples for Verification: For each type and finish of extruded nosing. D. Delegated-Design Submittal: For ladders, including analysis data signed and sealed by the qualified professional engineer responsible for their preparation. 1.5 INFORMATIONAL SUBMITTALS A. Qualification Data: For professional engineer. B. Mill Certificates: Signed by stainless-steel manufacturers, certifying that products furnished comply with requirements. PEDCOR SQUARE; BUILDING 5 05 50 00 - PEDCOR SQUARE Issue Date 12.18.15 METAL FABRICATIONS PEDCOR SQUARE; BUILDING 5 C. Welding certificates. D. Paint Compatibility Certificates: From manufacturers of topcoats applied over shop primers, certifying that shop primers are compatible with topcoats. E. Research/Evaluation Reports: For post-installed anchors, from ICC-ES. 1.6 QUALITY ASSURANCE A. Welding Qualifications: Qualify procedures and personnel according to AWS D1.1, "Structural Welding Code - Steel." B. Welding Qualifications: Qualify procedures and personnel according to the following: 1. AWS D1.1, "Structural Welding Code - Steel." 2. AWS D1.6, "Structural Welding Code - Stainless Steel." 1.7 FIELD CONDITIONS A. Field Measurements: Verify actual locations of walls and other construction contiguous with metal fabrications by field measurements before fabrication. PART 2 - PRODUCTS 2.1 PERFORMANCE REQUIREMENTS A. Delegated Design: Engage a qualified professional engineer, as defined in Section 01 40 00 "Quality Requirements," to design ladders. B. 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. 2.2 METALS A. Metal Surfaces, General: Provide materials with smooth, flat surfaces unless otherwise indicated. For metal fabrications exposed to view in the completed Work, provide materials without seam marks, roller marks, rolled trade names, or blemishes. B. Recycled Content of Steel Products: Post-consumer recycled content plus one-half of pre- consumer recycled content not less than 25 percent. C. Steel Plates, Shapes, and Bars: ASTM A 3. D. Stainless-Steel Sheet, Strip, and Plate: ASTM A 240 or ASTM A 666, Type 304. E. Stainless-Steel Bars and Shapes: ASTM A 276, Type 304. PEDCOR SQUARE; BUILDING 5 05 50 00 - PEDCOR SQUARE Issue Date 12.18.15 METAL FABRICATIONS PEDCOR SQUARE; BUILDING 5 F. Steel Tubing: ASTM A 500, cold-formed steel tubing. G. Slotted Channel Framing: Cold-formed metal box channels (struts) complying with MFMA-4. 1. Size of Channels: As indicated. 2. Material: Cold-rolled steel, ASTM A 1008, commercial steel, Type B; thickness as indicated; coated with rust-inhibitive, baked-on, acrylic enamel. H. Cast Iron: Either gray iron, ASTM A 48, or malleable iron, ASTM A 47, unless otherwise indicated. I. Aluminum Extrusions: ASTM B 221, Alloy 6063-T6. 2.3 FASTENERS A. General: Unless otherwise indicated, provide Type 304 stainless-steel fasteners for exterior use and zinc-plated fasteners with coating complying with ASTM B 633 or ASTM F 1941, Class Fe/Zn 5, at exterior walls. Select fasteners for type, grade, and class required. 1. Provide stainless-steel fasteners for fastening aluminum. 2. Provide stainless-steel fasteners for fastening stainless steel. B. Steel Bolts and Nuts: Regular hexagon-head bolts, ASTM A 325, Type 3; with hex nuts, ASTM A 563, Grade C3 ; and, where indicated, flat washers. C. Anchor Bolts: ASTM F 1554, Grade 36, of dimensions indicated; with nuts, ASTM A 563; and, where indicated, flat washers. 1. Hot-dip galvanize or provide mechanically deposited, zinc coating where item being fastened is indicated to be galvanized. D. 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. E. Cast-in-Place Anchors in Concrete: Either threaded type or wedge type unless otherwise indicated; galvanized ferrous castings, either ASTM A 47 malleable iron or ASTM A 27 cast steel. Provide bolts, washers, and shims as needed, all hot-dip galvanized per ASTM F 2329. F. Post-Installed Anchors: Torque-controlled expansion anchors or chemical anchors. 1. Material for Interior Locations: Carbon-steel components zinc plated to comply with ASTM B 633 or ASTM F 1941, Class Fe/Zn 5, unless otherwise indicated. 2. Material for Exterior Locations and Where Stainless Steel Is Indicated: Alloy Group 1 (A1) stainless-steel bolts, ASTM F 593, and nuts, ASTM F 594. G. Slotted-Channel Inserts: Cold-formed, hot-dip galvanized-steel box channels (struts) complying with MFMA-4, 1-5/8 by 7/8 inches by length indicated with anchor straps or studs not less than 3 inches long at not more than 8 inches o.c. Provide with temporary filler and tee-head bolts, complete with washers and nuts, all zinc-plated to comply with ASTM B 633, Class Fe/Zn 5, as needed for fastening to inserts. PEDCOR SQUARE; BUILDING 5 05 50 00 - PEDCOR SQUARE Issue Date 12.18.15 METAL FABRICATIONS PEDCOR SQUARE; BUILDING 5 2.4 MISCELLANEOUS MATERIALS A. Shop Primers: Provide primers that comply with Section 09 91 00 "Painting." Section 09 96 00 "High-Performance Coatings" and Section 09 97 01 “High-Performance Coatings-Aliphatic Polyurethane.” B. 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. C. Galvanizing Repair Paint: High-zinc-dust-content paint complying with SSPC-Paint 20 and compatible with paints specified to be used over it. D. Bituminous Paint: Cold-applied asphalt emulsion complying with ASTM D 1187. E. Non-shrink, Non-metallic Grout: Factory-packaged, non-staining, non-corrosive, non-gaseous grout complying with ASTM C 1107. Provide grout specifically recommended by manufacturer for interior and exterior applications. F. Concrete: Comply with requirements in Section 03 30 00 "Cast-in-Place Concrete" for normal- weight, air-entrained, concrete with a minimum 28-day compressive strength of 3000 psi. 2.5 FABRICATION, GENERAL A. Shop Assembly: Preassemble items in the shop to greatest extent possible. 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. B. Cut, drill, and punch metals cleanly and accurately. Remove burrs and ease edges to a radius of approximately 1/32 inch unless otherwise indicated. Remove sharp or rough areas on exposed surfaces. C. Form bent-metal corners to smallest radius possible without causing grain separation or otherwise impairing work. D. Form exposed work with accurate angles and surfaces and straight edges. E. Weld corners and seams continuously 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. F. Form exposed connections with hairline joints, flush and smooth, using concealed fasteners or welds where possible. Where exposed fasteners are required, use Phillips flat-head (countersunk) fasteners unless otherwise indicated. Locate joints where least conspicuous. G. Fabricate seams and other connections that are exposed to weather in a manner to exclude water. Provide weep holes where water may accumulate. PEDCOR SQUARE; BUILDING 5 05 50 00 - PEDCOR SQUARE Issue Date 12.18.15 METAL FABRICATIONS PEDCOR SQUARE; BUILDING 5 H. Cut, reinforce, drill, and tap metal fabrications as indicated to receive finish hardware, screws, and similar items. I. Provide for anchorage of type indicated; coordinate with supporting structure. Space anchoring devices to secure metal fabrications rigidly in place and to support indicated loads. J. Where units are indicated to be cast into concrete or built into masonry, equip with integrally welded steel strap anchors, 1/8 by 1-1/2 inches, with a minimum 6-inch embedment and 2-inch hook, not less than 8 inches from ends and corners of units and 24 inches o.c., unless otherwise indicated. 2.6 MISCELLANEOUS FRAMING AND SUPPORTS A. General: Provide steel framing and supports not specified in other Sections as needed to complete the Work. B. Fabricate units from 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. 1. Fabricate units from slotted channel framing where indicated. 2. Furnish inserts for units installed after concrete is placed. C. Fabricate steel girders for wood frame construction from continuous steel shapes of sizes indicated. 1. Provide bearing plates welded to beams where indicated. 2. Drill or punch girders and plates for field-bolted connections where indicated. 3. Where wood nailers are attached to girders with bolts or lag screws, drill or punch holes at 24 inches o.c. D. Galvanize miscellaneous framing and supports where indicated. E. Prime miscellaneous framing and supports with primer specified in Section 09 96 00 "High- Performance Coatings" where indicated. 2.7 SHELF ANGLES A. Fabricate shelf angles from steel angles of sizes indicated and for attachment to concrete framing. Provide horizontally slotted holes to receive 3/4-inch bolts, spaced not more than 6 inches from ends and 24 inches o.c., unless otherwise indicated. 1. Provide mitered and welded units at corners. 2. Provide open joints in shelf angles at expansion and control joints. Make open joint approximately 2 inches larger than expansion or control joint. B. For cavity walls, provide vertical channel brackets to support angles from backup masonry and concrete. C. Galvanize shelf angles located in exterior walls. D. Prime shelf angles located in interior walls with primer specified in Section 09 96 00 "High- Performance Coatings." PEDCOR SQUARE; BUILDING 5 05 50 00 - PEDCOR SQUARE Issue Date 12.18.15 METAL FABRICATIONS PEDCOR SQUARE; BUILDING 5 E. Furnish wedge-type concrete inserts, complete with fasteners, to attach shelf angles to cast-in- place concrete. 2.8 METAL LADDERS A. General: 1. For elevator pit ladders, comply with ASME A17.1/CSA B44. B. Steel Ladders: 1. Space side rails 16 inches apart unless otherwise indicated. 2. Side rails: Continuous, 3/8-by-2-1/2-inch steel flat bars, with eased edges. 3. Rungs: 3/4-inch- diameter steel bars. 4. Fit rungs in centerline of side rails; plug-weld and grind smooth on outer rail faces. 5. Provide nonslip surfaces on top of each rung by coating with abrasive material metallically bonded to rung. a. Products: Subject to compliance with requirements, available products that may be incorporated into the Work include, but are not limited to, the following: 1) Harsco Industrial IKG, a division of Harsco Corporation; Mebac. 2) SlipNOT Metal Safety Flooring, a division of W. S. Molnar Company; SlipNOT. 6. Provide platforms as indicated fabricated from welded or pressure-locked steel bar grating, supported by steel angles. Limit openings in gratings to no more than 1/2 inch in least dimension. 7. Support each ladder at top and bottom and not more than 60 inches o.c. with welded or bolted steel brackets. 8. Galvanize and prime ladders, including brackets. 9. Prime ladders, including brackets and fasteners, with primer specified in Section 09 96 00 "High-Performance Coatings." 2.9 METAL SHIPS' LADDERS A. Provide metal ships' ladders where indicated. Fabricate of open-type construction with channel or plate stringers and pipe and tube railings unless otherwise indicated. Provide brackets and fittings for installation. 1. Treads shall be not less than 5 inches exclusive of nosing or less than 8-1/2 inches including the nosing, and riser height shall be not more than 9-1/2 inches. 2. Fabricate ships' ladders, including railings from steel. 3. Fabricate treads from rolled-steel floor plate. 4. Comply with applicable railing requirements in Section 05 52 13 "Pipe and Tube Railings." B. Prime steel ships' ladders, including treads, railings, brackets, and fasteners, with primer specified in Section 09 96 00 "High-Performance Coatings." 2.10 METAL FLOOR PLATE A. Fabricate from rolled-steel floor plate of thickness indicated below: 1. Thickness: As indicated. PEDCOR SQUARE; BUILDING 5 05 50 00 - PEDCOR SQUARE Issue Date 12.18.15 METAL FABRICATIONS PEDCOR SQUARE; BUILDING 5 B. Provide grating sections where indicated fabricated from welded or pressure-locked steel bar grating. Limit openings in gratings to no more than 3/4 inch in least dimension. C. Provide steel angle supports as indicated. D. Include steel angle stiffeners, and fixed and removable sections as indicated. E. Provide flush steel bar drop handles for lifting removable sections, one at each end of each section. 2.11 ELEVATOR PIT SUMP COVERS A. Fabricate from 1/8-inch rolled-steel floor plate with four 1-inch- diameter holes for water drainage and for lifting. B. Provide steel angle supports as indicated. 2.12 MISCELLANEOUS STEEL TRIM A. Unless otherwise indicated, fabricate units from 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. 1. Provide with integrally welded steel strap anchors for embedding in concrete or masonry construction. C. Galvanize and prime exterior miscellaneous steel trim. D. Prime interior miscellaneous steel trim with primer specified in Section 09 96 00 "High- Performance Coatings." 2.13 METAL BOLLARDS A. Fabricate metal bollards from Schedule 40 steel pipe. 1. Cap bollards with 1/4-inch- thick steel plate. 2. Where bollards are indicated to receive controls for door operators, provide cutouts for controls and holes for wire. 3. Where bollards are indicated to receive light fixtures, provide cutouts for fixtures and holes for wire. 4. For square bollards, fabricate from steel tubing. See 2.2.F. B. Fabricate bollards with 3/8-inch- thick steel baseplates for bolting to concrete slab. Drill baseplates at all four corners for 3/4-inch anchor bolts. 1. Where bollards are to be anchored to sloping concrete slabs, angle baseplates for plumb alignment of bollards. PEDCOR SQUARE; BUILDING 5 05 50 00 - PEDCOR SQUARE Issue Date 12.18.15 METAL FABRICATIONS PEDCOR SQUARE; BUILDING 5 C. Fabricate sleeves for bollard anchorage from steel pipe with 1/4-inch- thick steel plate welded to bottom of sleeve. Make sleeves not less than 8 inches deep and 3/4 inch larger than OD of bollard. D. Fabricate internal sleeves for removable bollards from Schedule 40 steel pipe or 1/4-inch wall- thickness steel tubing with an OD approximately 1/16 inch less than ID of bollards. Match drill sleeve and bollard for 3/4-inch steel machine bolt. E. Prime bollards with primer specified in Section 09 96 00 "High-Performance Coatings." 2.14 PIPE AND DOWNSPOUT GUARDS A. Fabricate pipe and downspout guards from 3/8-inch- thick by 12-inch wide steel plate, bent to fit flat against the wall or column at both ends and to fit around pipe with 2-inch clearance between pipe and pipe guard. Drill each end for two 3/4-inch anchor bolts. B. Galvanize pipe and downspout guards. 2.15 ABRASIVE METAL NOSINGS AND THRESHOLDS A. Cast-Metal Units: Cast iron, with an integral-abrasive, as-cast finish consisting of aluminum oxide, silicon carbide, or a combination of both. Fabricate units in lengths necessary to accurately fit openings or conditions. 1. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following: a. American Safety Tread Co., Inc. b. Balco, Inc. c. Barry Pattern & Foundry Co., Inc. d. Granite State Casting Co. e. Safe-T-Metal Company, Inc. f. Wooster Products Inc. 2. Nosings: Cross-hatched units, 1-1/2 by 1-1/2 inches, for casting into concrete. 3. Thresholds: Fluted-saddle-type units, 5 inches wide by 1/2 inch high, with tapered edges. B. Provide anchors for embedding units in concrete, either integral or applied to units, as standard with manufacturer. C. Drill for mechanical anchors and countersink. Locate holes not more than 4 inches from ends and not more than 12 inches o.c., evenly spaced between ends, unless otherwise indicated. Provide closer spacing if recommended by manufacturer. 1. Provide two rows of holes for units more than 5 inches wide, with two holes aligned at ends and intermediate holes staggered. D. Apply bituminous paint to concealed surfaces of cast-metal units. PEDCOR SQUARE; BUILDING 5 05 50 00 - PEDCOR SQUARE Issue Date 12.18.15 METAL FABRICATIONS PEDCOR SQUARE; BUILDING 5 2.16 METAL DOWNSPOUT BOOTS A. Provide downspout boots made from cast iron in heights indicated with inlets of size and shape to suit downspouts. Provide units with flanges and holes for countersunk anchor bolts. 1. Outlet: Vertical, to discharge into pipe. B. Prime cast-iron downspout boots with primer specified in Section 09 96 00 "High-Performance Coatings." 2.17 LOOSE BEARING AND LEVELING PLATES A. Provide loose bearing and leveling plates for steel items bearing on masonry or concrete construction. Drill plates to receive anchor bolts and for grouting. B. Galvanize plates. C. Prime plates with primer specified in Section 09 96 00 "High-Performance Coatings." 2.18 LOOSE STEEL LINTELS A. Fabricate loose steel lintels from steel angles and shapes of size indicated for openings and recesses in masonry walls and partitions at locations indicated. Fabricate in single lengths for each opening unless otherwise indicated. Weld adjoining members together to form a single unit where indicated. B. Size loose lintels to provide bearing length at each side of openings equal to 1/12 of clear span, but not less than 8 inches unless otherwise indicated. C. Galvanize and prime loose steel lintels located in exterior walls. D. Prime loose steel lintels located in exterior walls with primer specified in Section 09 96 00 "High- Performance Coatings." 2.19 STEEL WELD PLATES AND ANGLES A. Provide steel weld plates and angles not specified in other Sections, for items supported from concrete construction as needed to complete the Work. Provide each unit with no fewer than two integrally welded steel strap anchors for embedding in concrete. 2.20 FINISHES, GENERAL A. Finish metal fabrications after assembly. B. Finish exposed surfaces to remove tool and die marks and stretch lines, and to blend into surrounding surface. PEDCOR SQUARE; BUILDING 5 05 50 00 - PEDCOR SQUARE Issue Date 12.18.15 METAL FABRICATIONS PEDCOR SQUARE; BUILDING 5 2.21 STEEL AND IRON FINISHES A. Galvanizing: Hot-dip galvanize items as indicated to comply with ASTM A 153 for steel and iron hardware and with ASTM A 123 for other steel and iron products. 1. Do not quench or apply post galvanizing treatments that might interfere with paint adhesion. B. Preparation for Shop Priming Galvanized Items: After galvanizing, thoroughly clean railings of grease, dirt, oil, flux, and other foreign matter, and treat with metallic phosphate process. C. Shop prime iron and steel items not indicated to be galvanized unless they are to be embedded in concrete, sprayed-on fireproofing, or masonry, or unless otherwise indicated. 1. Shop prime with primers specified in Section 09 91 00 "Painting" unless primers specified in Section 09 96 00 "High-Performance Coatings" are indicated. D. Preparation for Shop Priming: Prepare surfaces to comply with requirements indicated below: 1. Exterior Items: SSPC-SP 6/NACE No. 3, "Commercial Blast Cleaning." 2. Items Indicated to Receive Zinc-Rich Primer: SSPC-SP 6/NACE No. 3, "Commercial Blast Cleaning." 3. Items Indicated to Receive Primers Specified in Section 09 96 00 "High-Performance Coatings": SSPC-SP 6/NACE No. 3, "Commercial Blast Cleaning." 4. Other Items: SSPC-SP 3, "Power Tool Cleaning." E. Shop Priming: Apply shop primer to comply with SSPC-PA 1, "Paint Application Specification No. 1: Shop, Field, and Maintenance Painting of Steel," for shop painting. 1. Stripe paint corners, crevices, bolts, welds, and sharp edges. 2.22 ALUMINUM FINISHES A. As-Fabricated Finish: AA-M12. B. Clear Anodic Finish: AAMA 611, Class I, AA-M12C22A41. PART 3 - EXECUTION 3.1 INSTALLATION, GENERAL A. 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. B. 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. C. Field Welding: Comply with the following requirements: 1. Use materials and methods that minimize distortion and develop strength and corrosion resistance of base metals. PEDCOR SQUARE; BUILDING 5 05 50 00 - PEDCOR SQUARE Issue Date 12.18.15 METAL FABRICATIONS PEDCOR SQUARE; BUILDING 5 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. D. Fastening to In-Place Construction: Provide anchorage devices and fasteners where metal fabrications are required to be fastened to in-place construction. Provide threaded fasteners for use with concrete and masonry inserts, toggle bolts, through bolts, lag screws, wood screws, and other connectors. E. Provide temporary bracing or anchors in formwork for items that are to be built into concrete, masonry, or similar construction. F. Corrosion Protection: Coat concealed surfaces of aluminum that come into contact with grout, concrete, masonry, wood, or dissimilar metals with the following: 1. Cast Aluminum: Heavy coat of bituminous paint. 2. Extruded Aluminum: Two coats of clear lacquer. 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 indicated on Shop Drawings. B. Anchor supports for ceiling hung toilet partitions and overhead doors securely to, and rigidly brace from, building structure. C. Support steel girders on solid grouted masonry, concrete, or steel tube columns. Secure girders with anchor bolts embedded in grouted masonry or concrete or with bolts through top plates of pipe columns. 1. Where grout space under bearing plates is indicated for girders supported on concrete or masonry, install as specified in "Installing Bearing and Leveling Plates" Article. D. Install tube columns on concrete footings with grouted baseplates. Position and grout column baseplates as specified in "Installing Bearing and Leveling Plates" Article. 1. Grout baseplates of columns supporting steel girders after girders are installed and leveled. 3.3 INSTALLING METAL BOLLARDS A. Fill metal-capped bollards solidly with concrete and allow concrete to cure seven days before installing. 1. Do not fill removable bollards with concrete. B. Anchor bollards to existing construction with expansion anchors. Provide four 3/4-inch bolts at each bollard unless otherwise indicated. 1. Embed anchor bolts at least 4 inches in concrete. C. Anchor bollards in concrete with pipe sleeves preset and anchored into concrete. Fill annular space around bollard solidly with non-shrink grout; mixed and placed to comply with grout manufacturer's written instructions. Slope grout up approximately 1/8 inch toward bollard. PEDCOR SQUARE; BUILDING 5 05 50 00 - PEDCOR SQUARE Issue Date 12.18.15 METAL FABRICATIONS PEDCOR SQUARE; BUILDING 5 D. Anchor bollards in place with concrete footings. Center and align bollards in holes 3 inches above bottom of excavation. Place concrete and vibrate or tamp for consolidation. Support and brace bollards in position until concrete has cured. E. Anchor internal sleeves for removable bollards in place with concrete footings. Center and align sleeves in holes 3 inches above bottom of excavation. Place concrete and vibrate or tamp for consolidation. Support and brace sleeves in position until concrete has cured. F. Place removable bollards over internal sleeves and secure with 3/4-inch (19-mm) machine bolts and nuts. After tightening nuts, drill holes in bolts for inserting padlocks. Owner furnishes padlocks. G. Fill bollards solidly with concrete, mounding top surface to shed water. 1. Do not fill removable bollards with concrete. 3.4 INSTALLING PIPE GUARDS A. Provide pipe guards at exposed vertical pipes in parking garage where not protected by curbs or other barriers. Install by bolting to wall or column with expansion anchors. Provide four 3/4- inch bolts at each pipe guard. Mount pipe guards with top edge 26 inches above driving surface. 3.5 INSTALLING NOSINGS AND THRESHOLDS A. Center nosings on tread widths unless otherwise indicated. B. For nosings embedded in concrete steps or curbs, align nosings flush with riser faces and level with tread surfaces. C. Seal thresholds exposed to exterior with elastomeric sealant complying with Section 07 92 00 "Joint Sealants" to provide a watertight installation. 3.6 INSTALLING BEARING AND LEVELING PLATES A. Clean concrete and masonry bearing surfaces of bond-reducing materials, and roughen to improve bond to surfaces. Clean bottom surface of plates. B. Set bearing and leveling plates on wedges, shims, or leveling nuts. After bearing members have been positioned and plumbed, tighten anchor bolts. Do not remove wedges or shims but, if protruding, cut off flush with edge of bearing plate before packing with non-shrink grout. Pack grout solidly between bearing surfaces and plates to ensure that no voids remain. 3.7 ADJUSTING AND CLEANING A. Touchup Painting: Immediately after erection, clean field welds, bolted connections, and abraded areas. Paint uncoated and abraded 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 dry film thickness. PEDCOR SQUARE; BUILDING 5 05 50 00 - PEDCOR SQUARE Issue Date 12.18.15 METAL FABRICATIONS PEDCOR SQUARE; BUILDING 5 B. Touchup Painting: Cleaning and touchup painting of field welds, bolted connections, and abraded areas of shop paint are specified in Section 09 91 00 "Painting." C. Galvanized Surfaces: Clean field welds, bolted connections, and abraded areas and repair galvanizing to comply with ASTM A 780. END OF SECTION 05 50 00