ࡱ> _ Ԧbjbjzyzy G6b6b$fffffzzz8dz`0**(RRR- ? S T`V`V`V`V`V`V`$bdvz`f2"- - 2"2"z`ffRR`p'p'p'2"fRfRT`p'2"T`p'p'bY _R |7r$,]j@``0`]v1e%1e _1ef _4_ L 6p' , !%_ _ _ z`z`&_ _ _ `2"2"2"2"1e_ _ _ _ _ _ _ _ _ B ,: SECTION 05 50 00 metal fabrications GENERAL RELATED DOCUMENTS Drawings and general provisions of the Contract, including General Conditions and Division 01 Specification Sections, apply to this Section. SUMMARY Section Includes: THE FOLLOWING LIST MUST BE EDITED ON A PROJECT-BY-PROJECT BASIS. Steel framing and supports for ceiling-hung toilet compartments. Steel framing and supports for operable partitions. Steel framing and supports for overhead doors and grilles. Steel framing and supports for countertops. Steel framing and supports for medical equipment. Steel framing and supports for mechanical and electrical equipment. Steel framing and supports for applications where framing and supports are not specified in other Sections. Steel framing and supports for partial height partitions. Elevator machine beams,hoist beams, and divider beams. Steel shapes for supporting elevator door sills. Steel shapes for supporting elevator guide rails. Elevator sump pit grate. Shelf angles. Metal ladders. Ladder safety cages. Metal ships' ladders. Structural-steel door frames. Miscellaneous steel trim including steel angle corner guards steel edgings and loading-dock edge angles. Metal bollards. Pipe guards. Miscellaneous angles, shapes and fabrications shown on the Drawings Loose bearing and leveling plates for applications where they are not specified in other Sections. Parking garage cable guardrail system. Products furnished, but not installed, under this Section: Loose steel lintels. Anchor bolts, steel pipe sleeves, slotted-channel inserts, and wedge-type inserts indicated to be cast into concrete or built into unit masonry. Delete subparagraph below if weld plates and angles are specified in same Section as work that is welded to them. Steel weld plates and angles for casting into concrete for applications where they are not specified in other Sections. Related Sections: Retain Sections in subparagraphs below that contain requirements Contractor might expect to find in this Section but are specified in other Sections. Section03 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. Section04 20 00 "Unit Masonry" for installing loose lintels, anchor bolts, and other items built into unit masonry. Section05 12 00 "Structural Steel Framing." Section05 51 13 "Metal Pan Stairs." Section05 52 13 "Steel Pipe and Tube Railings." Section05 53 00 "Metal Gratings." Section09 22 16 "Non-Structural Framing" for steel framing used as part of door opening framing. REFERENCE STANDARDS The latest published edition of a reference shall be applicable to this Project unless identified by a specific edition date. Reference amendments adopted prior to the effective date of this Contract shall be applicable to this Project. Materials, installation and workmanship shall comply with all applicable requirements and standards. PERFORMANCE REQUIREMENTS Retain paragraph below if Contractor is required to assume responsibility for design. Delegated Design: Design, items scheduled including comprehensive engineering analysis by a qualified professional engineer, using performance requirements and design criteria indicated. Design Calculations: Submit design calculations for the following: Gratings and supports. Toilet partition support framing. NORMALLY DELETE COUNTERTOP SUPPORTS IN THIS SECTION AND KEEP A&M BRACKETS IN CABINET SECTION. ALSO DELETE OUT OF SECTION INCLUDES ABOVE. Countertop support framing. Partial height partitions. Parking cable guardrail system. Paragraph below is for exterior metalwork; revise to suit Project conditions and metalwork exposure. 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. Temperature Change: 120 degF (67 degC), ambient; 180 degF (100 degC), material surfaces. Gratings and Supports: Provide sizes and spacing of bars as required to support a minimum live load of 100 lbs. per sq. ft., or concentrated load of 2,000 lbf., whichever produces the greater stress. Supports for Suspended Toilet Partitions: Dead load of panels. Uniform Load: 50 pounds per linear foot of partition. Concentrated Load Downward: 250 pounds at any point on the partition. Limit deflection to L/360 between hangers. Supports for Countertops: Dead load of counters. Uniform Load: 50 pounds per linear foot of counter. Concentrated Load Downward: 200 pounds at any point on the counter. Limit deflection to L/360 between supports. Support for Partial Height Partitions: Uniform load of 50 lbf/ ft. (0.73 kN/m) applied in any direction. Concentrated load of 200 lbf (0.89 kN) applied in any direction. Uniform and concentrated loads need not be assumed to act concurrently. Deflection of L/240. SUBMITTALS Product Data: For the following: Partial-height partition supports. Nonslip aggregates and nonslip-aggregate surface finishes. Parking cable guardrail system. Paint products. Grout. Shop Drawings: Show fabrication and installation details for metal fabrications. Include plans, elevations, sections, and details of metal fabrications and their connections. Show anchorage and accessory items. Delegated-Design Submittal: For installed products indicated to comply with performance requirements and design criteria, including analysis data signed and sealed by the qualified professional engineer, within the State of the Project, responsible for their preparation. Welding certificates. Paint Compatibility Certificates: From manufacturers of topcoats applied over shop primers certifying that shop primers are compatible with topcoats. QUALITY ASSURANCE Welding Qualifications: Qualify procedures and personnel according to AWSD1.1/D1.1M, "Structural Welding Code - Steel." PROJECT CONDITIONS Field Measurements: Verify actual locations of walls and other construction contiguous with metal fabrications by field measurements before fabrication. Established Dimensions: Where field measurements cannot be made without delaying the Work, establish dimensions and proceed with fabricating metal fabrications without field measurements. Coordinate wall and other contiguous construction to ensure that actual dimensions correspond to established dimensions. Provide allowance for trimming and fitting at site. COORDINATION 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. Coordinate installation of anchorage 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. Coordinate installation of steel weld plates and angles for casting into concrete that are specified in this Section but required for work of another Section. Deliver such items to Project site in time for installation. PRODUCTS METALS, GENERAL 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. FERROUS METALS Steel Plates, Shapes, and Bars: ASTMA36/A36M. Steel Tubing: ASTMA500, cold-formed steel tubing. Steel Pipe: ASTMA53/A53M, standard weight (Schedule40) unless otherwise indicated. Slotted Channel Framing: Cold-formed metal box channels (struts) complying with MFMA-4. Size of Channels: 1-5/8 by 1-5/8 inches (41 by 41 mm). Material: Galvanized steel, ASTMA653/A653M, commercial steel, TypeB, with G90 (Z275) coating; 0.108-inch (2.8-mm) nominal thickness unless noted otherwise. Cast Iron: Either gray iron, ASTMA48/A48M, or malleable iron, ASTMA47/A47M, unless otherwise indicated. FASTENERS General: Unless otherwise indicated, provide Type304 or Type316 stainless-steel fasteners for exterior use and zinc-plated fasteners with coating complying with ASTMB633 or ASTMF1941 (ASTMF1941M), ClassFe/Zn5, at exterior walls. Select fasteners for type, grade, and class required. Steel Bolts and Nuts: Regular hexagon-head bolts, ASTMA307, GradeA (ASTMF568M, Property Class4.6); with hex nuts, ASTMA563 (ASTMA563M); and, where indicated, flat washers. Stainless-Steel Bolts and Nuts: Regular hexagon-head annealed stainless-steel bolts, ASTMF593 (ASTMF738M); with hex nuts, ASTMF594 (ASTMF836M); and, where indicated, flat washers; Alloy Group1 (A1) or Group2 (A4) as dictated by bolt material. Anchor Bolts: ASTMF1554, Grade36, of dimensions indicated; with nuts, ASTMA563; and, where indicated, flat washers. Hot-dip galvanize or provide mechanically deposited, zinc coating where item being fastened is indicated to be galvanized. Eyebolts: ASTMA489. Machine Screws: ASMEB18.6.3 (ASMEB18.6.7M). Lag Screws: ASMEB18.2.1 (ASMEB18.2.3.8M). Wood Screws: Flat head, ASMEB18.6.1. Toggle Bolts: FSFF-B-588, tumble-wing type, class and style as needed. Plain Washers: Round, ASMEB18.22.1 (ASMEB18.22M). Lock Washers: Helical, spring type, ASMEB18.21.1 (ASMEB18.21.2M). Cast-in-Place Anchors in Concrete: Either threaded type or wedge type unless otherwise indicated; galvanized ferrous castings, either ASTMA47/A47M malleable iron or ASTMA27/A27M cast steel. Provide bolts, washers, and shims as needed, all hot-dip galvanized per ASTMF2329. Post-Installed Anchors: Torque-controlled expansion anchors or chemical anchors. Material for Interior Locations: Carbon-steel components zinc plated to comply with ASTMB633 or ASTMF1941 (ASTMF1941M), ClassFe/Zn5, unless otherwise indicated. Material for Exterior Locations: Alloy Group1 (A1) or Group2 (A4) stainless-steel bolts, ASTMF593 (ASTMF738M), and nuts, ASTMF594 (ASTMF836M). Power Actuated Anchors: Fastener system of type suitable for application indicated, fabricated from corrosion resistant materials, with capability to sustain, without failure, a load equal to ten (10) times design load, as determined by testing per ASTM E 1190 conducted by a qualified independent testing agency. Provide manufacturers substantiating data for each type and condition used as part of submittals. MISCELLANEOUS MATERIALS Welding Rods and Bare Electrodes: Select according to AWS specifications for metal alloy welded. Universal Shop Primer: Complying with SSPC-Paint25, TypeII, zinc oxide, alkyd, linseed oil primer. Use primer containing pigments that make it easily distinguishable from zinc-rich primer. Retain "Zinc-Rich Shop Primers" in paragraphs below if needed for extreme exterior conditions. If using zinc-rich primers remove Galvanization and replace with Zinc-Rich Primer within the individual articles. Zinc-Rich Shop Primer for Ferrous Metal: Organic zinc-rich primer, complying with SSPC-Paint20 and compatible with topcoat. Products: Subject to compliance with requirements, provide one of the following: Carbozinc 621; Carboline Company. Aquapon Zinc-Rich Primer 97-670; PPG Industries, Inc. Series 90-97 - Tneme-Zinc; Tnemec Company, Inc. Galvanizing Repair Paint: High-zinc-dust-content paint complying with SSPC-Paint20 and compatible with paints specified to be used over it. Retain first paragraph below for heavy-duty grouting applications. Do not use in wet areas or on exterior. Nonshrink, Metallic Grout: Factory-packaged, ferrous-aggregate grout complying with ASTMC1107, specifically recommended by manufacturer for heavy-duty loading applications. Retain first paragraph below for grouting applications where nonstaining grout is required. Nonshrink, Nonmetallic Grout: Factory-packaged, nonstaining, noncorrosive, nongaseous grout complying with ASTMC1107. Provide grout specifically recommended by manufacturer for interior and exterior applications. Retain paragraph below if required for concrete-filled bollards, footings for bollards, or wheel guards. Concrete: Comply with requirements in Section033000 "Cast-in-Place Concrete" for normal-weight, air-entrained, concrete with a minimum 28-day compressive strength of 3000 psi (20 MPa). FABRICATION, GENERAL 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. Cut, drill, and punch metals cleanly and accurately. Remove burrs and ease edges to a radius of approximately 1/32 inch (1 mm) unless otherwise indicated. Remove sharp or rough areas on exposed surfaces. Form bent-metal corners to smallest radius possible without causing grain separation or otherwise impairing work. Form exposed work with accurate angles and surfaces and straight edges. Weld corners and seams continuously to comply with the following: Use materials and methods that minimize distortion and develop strength and corrosion resistance of base metals. Obtain fusion without undercut or overlap. Remove welding flux immediately. At exposed connections, finish exposed welds and surfaces smooth and blended so no roughness shows after finishingand contour of welded surface matches that of adjacent surface. 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. Fabricate seams and other connections that will be exposed to weather in a manner to exclude water. Provide weep holes where water may accumulate. Cut, reinforce, drill, and tap metal fabrications as indicated to receive finish hardware, screws, and similar items. 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. 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 (3.2 by 38 mm), with a minimum 6-inch (150-mm) embedment and 2-inch (50-mm) hook, not less than 8 inches (200 mm) from ends and corners of units and 24 inches (600 mm) o.c., unless otherwise indicated. The articles below specify fabrication requirements for typical metal fabrications; revise those retained to suit Project and add others as required. MISCELLANEOUS FRAMING AND SUPPORTS General: Provide steel framing and supports not specified in other Sections as needed to complete the Work. 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. Fabricate units from slotted channel framing where indicated. Furnish inserts for units installed after concrete is placed. Requirements in first paragraph below are examples only; revise to suit Project. Base support and bracing sizes on recommendations of manufacturer of item being supported. Add similar provisions for other supports, such as for ceiling-hung toilet compartments, overhead doors, etc. Fabricate supports for operable partitions from continuous steel beams of sizes [indicated] [recommended by partition manufacturer] with attached bearing plates, anchors, and braces as [indicated] [recommended by partition manufacturer]. Drill or punch bottom flanges of beams to receive partition track hanger rods; locate holes where indicated on operable partition Shop Drawings. Partial-Height Partition Supports: At Contractors Option provide one of the following: Fabricate supports for partial height partition supports from steel shapes of size required to limit the specified deflection with attached bearing plates, anchors, and braces. Manufactured minimum 14 gage steel tube and 3/8-inch thick steel base plate assembly, of height required to brace less than full-height, free-standing gypsum board partitions, with pre-punched holes for attachment or anchorage to concrete subfloor substrate. Acceptable Products: NoFlex Corporation, Huntington Beach, CA. R-15 bank rail support post as manufactured by RACO. Galvanize miscellaneous framing and supports where indicated. SUPPORTS FOR SUSPENDED TOILET PARTITIONS Beams: Continuous steel shapes of size required to limit the specified deflection between hangers, but use not less than C 8 x 11.5 channels or another shape with equivalent structural properties. Hangers: Steel rods, 1/2 inch in diameter, spaced not more than 36 inches 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. Braces and Angles: Steel angles of size required for rigid support of beam and for secure anchorage. MEDICAL EQUIPMENT SUPPORT SYSTEM To establish standards of manufacture, operation, performance, and appearance, drawings and specifications are based on products of Unistrut Corporation. Provided compliance with requirements, products of other manufacturers may also be acceptable if accepted in advance by the Owner. Provide all Metal Framing material, fittings and related strut system accessories as required by Project conditions. Rails at finished ceiling shall be on centers as required by equipment manufacturer and allow continuous attachment along any point on the rail. System shall be true, plumb and level to the tolerances indicated when maximum loading conditions are applied due to equipment operation. Support Members: "K series" X-Ray channel with spacing to allow installation of standard modular 24" ceiling fixtures and equipment. Vertical Supports: 12 gage Telespar vertical supports with provision for both basic and micro vertical adjustments. Loading: Design the support structure to support the maximum concentrated load that will be encountered by positioning the equipment at the extremities of its travel at any single point along the exposed rails. Safety Factor: The system shall be designed with a minimum safety factor of 3 based upon ultimate strength under static loading conditions. Provide all components finished with manufacturer's standard electro-galvanized finish. SHELF ANGLES Retain this article for angles supported from concrete frame. Angles connected to structural-steel framing are specified in Section051200 "Structural Steel Framing." Fabricate shelf angles from steel angles of sizes indicated and for attachment to concrete framing. Provide horizontally slotted holes to receive 3/4-inch (19-mm) bolts, spaced not more than 6 inches (150 mm) from ends and 24 inches (600 mm) o.c., unless otherwise indicated. Provide mitered and welded units at corners. Provide open joints in shelf angles at expansion and control joints. Make open joint approximately 2 inches (50 mm) larger than expansion or control joint. For cavity walls, provide vertical channel brackets to support angles from backup masonry and concrete. Galvanize shelf angles located in exterior walls or where otherwise indicated. Prime shelf angles located in interior walls. Delete paragraph below if inserts are specified in Section033000 "Cast-in-Place Concrete." Furnish wedge-type concrete inserts, complete with fasteners, to attach shelf angles to cast-in-place concrete. METAL LADDERS General: Comply with ANSIA14.3 unless otherwise indicated. For elevator pit ladders, comply with ASMEA17.1. Steel Ladders: Space siderails 18 inches (457 mm) apart unless otherwise indicated. Space siderails of elevator pit ladders 12 inches (300 mm) apart. Siderails: Continuous, 3/8-by-2-1/2-inch (9.5-by-64-mm) steel flat bars, with eased edges. Rungs: 1-inch- (25-mm-) diameter steel bars. Fit rungs in centerline of siderails; plug-weld and grind smooth on outer rail faces. Provide nonslip surfaces on top of each rung by coating with abrasive material metallically bonded to rung. Products: Subject to compliance with requirements, provide one of the following: IKG Industries, a division of Harsco Corporation; Mebac. SlipNOT Metal Safety Flooring, a W. S. Molnar company; SlipNOT. 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 (12 mm) in least dimension. Support each ladderat top and bottom and not more than 60 inches (1500 mm) o.c. with welded or bolted steel brackets. Galvanize exteriorladders and ladders in elevator pits, including brackets and fasteners. Prime interior ladders, including brackets and fasteners, unless noted otherwise. LADDER SAFETY CAGES ANSIA14.3 requires safety cages for ladders longer than 24 feet (7.3m) unless a ladder safety system is provided. 1996 BOCA Code and OSHA regulations require cages for ladders longer than 20 feet (6m). General: Fabricate ladder safety cages to comply with ANSIA14.3. Assemble by welding or with stainless-steel fasteners. Provide primary hoops at tops and bottoms of cages and spaced not more than 20 feet (6m) o.c. Provide secondary intermediate hoops spaced not more than 48 inches (1200 mm) o.c. between primary hoops. Fasten assembled safety cage to ladder rails and adjacent construction by welding or with stainless-steel fasteners unless otherwise indicated. Steel Ladder Safety Cages: Primary Hoops: 1/4-by-4-inch (6.4-by-100-mm) flat bar hoops. Secondary Intermediate Hoops: 1/4-by-2-inch (6.4-by-50-mm) flat bar hoops. Vertical Bars: 3/16-by-1-1/2-inch (4.8-by-38-mm) flat bars secured to each hoop. Galvanize exteriorladders, including brackets and fasteners. Prime interior ladders, including brackets and fasteners, unless noted otherwise. METAL SHIPS' LADDERS Verify that use of ships' ladders is acceptable to authorities having jurisdiction before retaining this article. ANSIA14.3 and OSHA regulations discourage use of ships' ladders 60 degrees or steeper. 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. Fabricate ships' ladders, including railings from steel. Fabricate treadsand platforms from welded or pressure-locked steel bar grating Limit openings in gratings to no more than 1/2 inch (12 mm) in least dimension. Fabricate treadsand platforms from rolled-steel floor plate. Comply with applicable railing requirements in Section05 52 13 "Pipe and Tube Railings." Galvanize exteriorsteel ships' ladders, including treads, railings, brackets, and fasteners. Prime interiorsteel ships' ladders, including treads, railings, brackets, and fasteners, unless noted otherwise. Verify that elevator sump pit is code compliant. They are not always allowed. ELEVATOR SUMP PIT GRATING Metal Bar-Grating: Form elevator sump pit cover to configurations shown from metal bar grating; fabricate to comply with NAAMMMBG531, "Metal Bar Grating Manual." Manufacturers: Subject to compliance with requirements, provide metal bar grating products by one of the following: Alabama Metal Industries Corporation. All American Grating, Inc. Barnett/Bates Corp. IKG Industries; a Harsco Company. Ohio Gratings, Inc. Fabricate from welded steel grating with 1-1/4-by-3/16-inch (32-by-5-mm) bearing bars at 15/16 inch (24 mm) o.c. and crossbars at 4 inches (100 mm) o.c., NAAMM designation: W-15-4 (1-1/4 x 3/16) STEEL. Surface: Serrated. Finish: Galvanized. STRUCTURAL-STEEL DOOR FRAMES Retain this article for structural-steel door frames built into masonry or concrete walls and not attached to structural-steel building frame. Door frames connected to structural-steel framing are specified in Section051200 "Structural Steel Framing." Fabricate structural-steel door frames from steel shapes, plates, and bars of size and to dimensions indicated, fully welded together, with 5/8-by-1-1/2-inch (16-by-38-mm) steel channel stops, unless otherwise indicated. Plug-weld built-up members and continuously weld exposed joints. Secure removable stops to frame with countersunk machine screws, uniformly spaced at not more than 10 inches (250 mm) o.c. Reinforce frames and drill and tap as necessary to accept finish hardware. Provide with integrally welded steel strap anchors for securing door frames into adjoining concrete or masonry. Extend bottom of frames to floor elevation indicated with steel angle clips welded to frames for anchoring frame to floor with expansion shields and bolts. Galvanize exteriorframes, including brackets and fasteners. Prime interior frames, including brackets and fasteners, unless noted otherwise. MISCELLANEOUS STEEL TRIM 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. Provide cutouts, fittings, and anchorages as needed to coordinate assembly and installation with other work. Provide with integrally welded steel strap anchors for embedding in concrete or masonry construction. Galvanize exteriormiscellaneous steel trim, including brackets and fasteners. Prime interior miscellaneous steel trim, including brackets and fasteners, unless noted otherwise. remove paragraph if corner guards are covered in division 09 CORNER GUARDS Provide steel corner guards on external corners of columns and walls in traffic area where shown on the Drawings. Unless otherwise shown on the Drawings, fabricate from 3-1/2 inches x 3-1/2 inches x 1/4 inch steel angles 4 feet high, with 1/2 inch diameter countersunk flat head concrete expansion type anchor bolts spaced 18 inches o.c., 4 inches from top and bottom, minimum three (3) per angle leg. DOCK EDGE AND LEVELER PIT ANGLES Provide not less than 3 inch x 3 inch x 1/4 inch thick continuous angles with 1/4 inch diameter x 3-1/2 inches stud anchors welded to the inside corner of angles at 10 inches o.c. Place stud anchors a maximum of 3 inches from ends of angles. Place angles as shown on the Drawings and in accordance with the final reviewed shop drawing. Coordinate locations and requirements for leveler pit angles with the installing leveler contractor. METAL BOLLARDS Usually retain Schedule40 steel pipe in first paragraph below. Schedule80 is suitable for security applications. Fabricate metal bollards from [Schedule40 steel pipe] [Schedule80 steel pipe] [1/4-inch (6.4-mm) wall-thickness rectangular steel tubing] [steel shapes, as indicated]. Retain first subparagraph below if required; delete if bollards are concrete filled. Cap bollards with 1/4-inch- (6.4-mm-) thick steel plate. Where bollards are indicated to receive controls for door operators, provide necessary cutouts for controls and holes for wire. Where bollards are indicated to receive light fixtures, provide necessary cutouts for fixtures and holes for wire. Retain first paragraph below if required for mounting bollards on structural slab or on existing pavement. Fabricate bollards with 3/8-inch- (9.5-mm-) thick steel baseplates for bolting to concrete slab. Drill baseplates at all four corners for 3/4-inch (19-mm) anchor bolts. Where bollards are to be anchored to sloping concrete slabs, angle baseplates for plumb alignment of bollards. Fabricate sleeves for bollard anchorage from steel [pipe] [or] [tubing] with 1/4-inch- (6.4-mm-) thick steel plate welded to bottom of sleeve. Make sleeves not less than 8 inches (200 mm) deep and 3/4 inch (19 mm) larger than OD of bollard. Revise first paragraph below if using Schedule80 pipe bollards, rectangular steel tube bollards, or bollards of other shapes. Fabricate internal sleeves for removable bollards from Schedule40 steel pipe or 1/4-inch (6.4-mm) wall-thickness steel tubing with an OD approximately 1/16 inch (1.5 mm) less than ID of bollards. Match drill sleeve and bollard for 3/4 inch (19 mm) steel machine bolt. Prime bollards with [zinc-rich primer.] [primer specified in Section099600 "High-Performance Coatings."] PIPE GUARDS First paragraph below is an example of pipe or downspout protection for building exteriors, parking garages, and other locations where subject to damage by vehicles. Fabricate pipe guards from 3/8-inch- (9.5-mm-) thick by 12-inch- (300-mm-) wide steel plate, bent to fit flat against the wall or column at both ends and to fit around pipe with 2-inch (50-mm) clearance between pipe and pipe guard. Drill each end for two 3/4-inch (19-mm) anchor bolts. Galvanize pipe guards. LOOSE BEARING AND LEVELING PLATES Provide loose bearing and leveling plates for steel items bearing on masonry or concrete construction. Drill plates to receive anchor bolts and for grouting. Galvanize exteriorloose bearing and leveling plates, including brackets and fasteners. Prime interior loose bearing and leveling plates, including brackets and fasteners, unless noted otherwise. LOOSE STEEL LINTELS 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. 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 (200 mm) unless otherwise indicated. Galvanize loose steel lintels located in exterior walls. Prime interior loose steel lintels, unless noted otherwise. STEEL WELD PLATES AND ANGLES 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. CABLE GUARDRAIL SYSTEM This Article is typically used in parking garages. Prestressing Steel: Seven-wire stress-relieved strand for prestressed concrete, manufactured in accordance with ASTM A 416 and free from corrosion, with a guaranteed minimum tensile strength of 270 ksi. Nominal Diameter: 1/2 inch. Area: 0.153 square inches. Modulus of Elasticity: 29.000 ksi (assumed). Minimum Ultimate Strength: 41.3 kips. Anchorages and Bearing Plates: Meet the minimum requirements set forth in ACI Standard Building Code Requirements for Reinforced Concrete (ACI31883), or Prestressed Concrete Institute "PCI Standard Building for Prestressed Concrete". Bearing Plate Materials: 42,000 psi minimum yield unless noted otherwise. Anchorhead: C1050 Special Bar Quality. HR Normalized Wedge: AISI C11 L 17 or equal Cast Anchorage: ASTM A 536 Gr. 806003. Strand Coating: Per ASTM A 475. Acceptable Manufacturer: VSL Corporation. FINISHES, GENERAL Comply with NAAMM's "Metal Finishes Manual for Architectural and Metal Products" for recommendations for applying and designating finishes. Finish metal fabrications after assembly. Finish exposed surfaces to remove tool and die marks and stretch lines, and to blend into surrounding surface. STEEL AND IRON FINISHES Galvanizing: Hot-dip galvanize items as indicated to comply with ASTMA153/A153M for steel and iron hardware and with ASTMA123/A123M for other steel and iron products. Do not quench or apply post galvanizing treatments that might interfere with paint adhesion. Shop prime iron and steel itemsnot indicated to be galvanized unless they are to be embedded in concrete, sprayed-on fireproofing, or masonry, or unless otherwise indicated. Shop prime with universal shop primer indicated. Preparation for Shop Priming: Prepare surfaces to comply with requirements indicated below: Exterior Items: SSPC-SP6/NACE No.3, "Commercial Blast Cleaning." Other Items: SSPC-SP3, "Power Tool Cleaning." Shop Priming: Apply shop primer to comply with SSPC-PA1, "Paint Application Specification No.1: Shop, Field, and Maintenance Painting of Steel," for shop painting. Stripe paint corners, crevices, bolts, welds, and sharp edges. EXECUTION INSTALLATION, GENERAL 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. 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. Field Welding: Comply with the following requirements: Use materials and methods that minimize distortion and develop strength and corrosion resistance of base metals. Obtain fusion without undercut or overlap. Remove welding flux immediately. 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. 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. Provide temporary bracing or anchors in formwork for items that are to be built into concrete, masonry, or similar construction. Retain articles below if applicable to Project. Insert others where needed to specify requirements applicable to a specific item not covered under general installation requirements above. INSTALLING MISCELLANEOUS FRAMING AND SUPPORTS General: Install framing and supports to comply with requirements of items being supported, including manufacturers' written instructions and requirements indicated on Shop Drawings. Anchor supports for operable partitions securely to and rigidly brace from building structure. Support steel girders on solid grouted masonry, concrete, or steel pipe columns. Secure girders with anchor bolts embedded in grouted masonry or concrete or with bolts through top plates of pipe columns. 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. Install pipe columns on concrete footings with grouted baseplates. Position and grout column baseplates as specified in "Installing Bearing and Leveling Plates" Article. Grout baseplates of columns supporting steel girders after girders are installed and leveled. INSTALLING METAL BOLLARDS Fill metal-capped bollards solidly with concrete and allow concrete to cure seven days before installing. Do not fill removable bollards with concrete. Retain one or more of first three paragraphs below for anchoring bollards. Anchor bollards to existing construction with [expansion anchors] [anchor bolts] [through bolts]. Provide four 3/4-inch (19-mm) bolts at each bollard unless otherwise indicated. Embed anchor bolts at least 4 inches (100 mm) in concrete. Anchor bollards in concrete [with pipe sleeves preset and anchored into concrete] [in formed or core-drilled holes not less than 8 inches (200 mm) deep and 3/4 inch (19 mm) larger than OD of bollard]. Fill annular space around bollard solidly with nonshrink, nonmetallic grout; mixed and placed to comply with grout manufacturer's written instructions. Slope grout up approximately 1/8 inch (3 mm) toward bollard. First paragraph below can be used for bollards located in landscaping or unit pavers. Anchor bollards in place with concrete footings. Center and align bollards in holes 3 inches (75 mm) above bottom of excavation. Place concrete and vibrate or tamp for consolidation. Support and brace bollards in position until concrete has cured. Retain one of first two paragraphs below for anchoring removable bollards, if any. Anchor internal sleeves for removable bollards in [concrete by inserting into pipe sleeves preset into concrete] [formed or core-drilled holes not less than 8 inches (200 mm) deep and 3/4 inch (19 mm) larger than OD of sleeve]. Fill annular space around internal sleeves solidly with nonshrink, nonmetallic grout; mixed and placed to comply with grout manufacturer's written instructions. Slope grout up approximately 1/8 inch (3 mm) toward internal sleeve. Anchor internal sleeves for removable bollards in place with concrete footings. Center and align sleeves in holes 3 inches (75 mm) above bottom of excavation. Place concrete and vibrate or tamp for consolidation. Support and brace sleeves in position until concrete has cured. 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 will furnish padlocks. Delete paragraph below if bollards have metal caps. Fill bollards solidly with concrete, mounding top surface to shed water. Do not fill removable bollards with concrete. INSTALLING PIPE GUARDS This article is an example only; revise to suit Project or delete and show on Drawings. 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 (19-mm) bolts at each pipe guard. Mount pipe guards with top edge 26 inches (660 mm) above driving surface. INSTALLING BEARING AND LEVELING PLATES Clean concrete and masonry bearing surfaces of bond-reducing materials, and roughen to improve bond to surfaces. Clean bottom surface of plates. 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 grout. Revise first subparagraph below if only metallic grout is used at concealed, protected locations. Use nonshrink grout, either metallic or nonmetallic, in concealed locations where not exposed to moisture; use nonshrink, nonmetallic grout in exposed locations unless otherwise indicated. Pack grout solidly between bearing surfaces and plates to ensure that no voids remain. INSTALLATION OF CABLE GUARDRAIL SYSTEM Install in accordance with shop drawings and manufacturer's instructions at locations indicated on the drawings. Erect work horizontal or parallel to rake of ramp, rigid, and free from distortion or defects detrimental to appearance or performance. Anchor cable railing system to mounting surface as indicated on the drawings. Do not field weld components. Use manufacturers supplied cable hardware. Terminate and tension cables in accordance with manufacturers instructions. Tension cables to a minimum of 5000 pounds per foot or per manufacturers recommendations, each in sequence in accordance with manufacturers instructions. Ensure cables are clean, parallel to each other and without kinks or sags. ADJUSTING AND CLEANING 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-PA1 for touching up shop-painted surfaces. Apply by brush or spray to provide a minimum 2.0-mil (0.05-mm) dry film thickness. Galvanized Surfaces: Clean field welds, bolted connections, and abraded areas and repair galvanizing to comply with ASTMA780. END OF SECTION 05 50 00 FOR MDACC USE ONLY. 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