STEEL HARDWARE, AND MISCELLANEOUS STRUCTURE ITEMS
711.01 Reinforcing Steel
711.01.1 Bar Reinforcing
Furnish the specified reinforcing steel in accordance with AASHTO M 31. Furnish bar reinforcing from a source audited by the NTPEP Reinforcing Steel/Welded Wire Reinforcement Audit Program and listed on the QPL.
711.01.2 Epoxy-coated Reinforcing Bars
Furnish epoxy-coated reinforcing bars in accordance with ASTM A615 and the contract requirements. Epoxy-coating on reinforcing bars must be in accordance with ASTM A775 or ASTM A934. Ensure the bars are coated by an applicator plant listed on the QPL and certified under the CRSI epoxy coating plant certification program for fusion-bonded epoxy applicator plants.
711.01.3 Wire and Wire Mesh
Furnish reinforcing wire and wire mesh for concrete in accordance with AASHTO M 336. Furnish bar mats in accordance with AASHTO M 54. Furnish wire, wire mesh, and bar mats from a source audited by the NTPEP Reinforcing Steel/Welded Wire Reinforcement Audit Program and listed on the QPL.
711.02 Structural Steel
Furnish structural steel for:
A.Bridge superstructure applications in accordance with AASHTO M 270. Use material in accordance with Charpy V-notch impact test requirements for zone 3 to fabricate webs, flanges in tension or stress reversal zones, splice plates, w-shaped rolled beams. This requirement applies to diaphragms and diaphragm connection plates for horizontally curved girders.
B.Other applications in accordance with AASHTO M 270.
711.03 Structural Steel Tubing
Furnish structural steel tubing in accordance with ASTM A500, Grade B, for cold-formed welded seamless carbon steel structural tubing in rounds and shapes.
711.04 Pins and Rollers
Furnish pins and rollers of annealed carbon steel forgings in accordance with AASHTO M 102, Class C requirements, or cold-finished carbon steel shaft in accordance with AASHTO M 169, Grades 1018 to 1030 inclusive. Fabricate pins and recessed pin nuts as detailed in the AISC Manual of Steel Construction.
711.05 Welding Electrodes
Use welding electrodes in accordance with AWS, AASHTO, and the contract.
711.06 High Tensile Strength Bolts
Furnish high strength bolts for structural steel joints in accordance with ASTM F3125 Grades A325 (Type 1 or 3), or A490 (Type 1 or 3) as specified in the contract. 711 – REINFORCING STEEL, STRUCTURAL STEEL 2020 EDITION V5.1 HARDWARE, AND MISCELLANEOUS STRUCTURE ITEMS 711-2
A.Tension Control Bolts. Meet the requirements of ASTM F3125 Grade F1852 when substituting tension control bolt assemblies for Grade A325 bolts. Meet the requirements of ASTM F3125 Grade F2280 when substituting tension control bolt assemblies for Grade A490 bolts.
B.Nuts. Furnish heavy hex nuts for high strength bolts in accordance with Table 711-1. TABLE 711-1 HEAVY HEX NUTS Bolt Type Heavy Hex Nut ASTM A563 ASTM A325 Type 1-plain Grade C, C3, D, DH, DH3 Type 1-galvanized DH Type 3 Grade C3, DH3 ASTM A490 Type 1 Grade DH, DH3 Type 3 Grade DH3 Notes:
1.Plain heavy hex nuts Grades C, C3 and D must have a minimum hardness of 89 HRB.
2.A194 Grade 2H may be substituted for A563 Grade DH.
3.When galvanized fasteners are specified, furnish assemblies manufactured and lubricated with a visible dye, so a visual check verifies the lubricant’s presence at installation.
C.Hardened Washers. Furnish washers for bolts in accordance with ASTM F436. Washers are to be circular, beveled or extra thick as required in the contract. Washers must have the same surface condition and weathering characteristics as the bolts specified in the contract.
D.Direct Tension Indicators. Furnish direct tension indicators in accordance with ASTM F959. Galvanize DTI’s by mechanical deposition in accordance with ASTM B695 Class
55.Hot dip galvanizing is not allowed.
E.Galvanized High Strength Bolts. Hot dip galvanize Grade A325 bolts and hardware in accordance with ASTM F2329. Hot dip galvanizing Grade A490 bolts is not allowed. Testing for failure and additional rotation will be done in accordance with MT 601 .
711.07 Bolts and Nuts
Furnish bolts, threaded rod, and nuts in accordance with ASTM A307 Grade A requirements.
711.08 Galvanized Metal
Furnish galvanized ferrous metal products in accordance with AASHTO M 111, or when applicable, meeting ASTM B695 (Class 50) requirements.
711.09 Welded Stud Shear Connectors
Furnish shear connector studs in accordance with AWS D1.5 Section 7 specification for Stud Welding and the contract.
711.10 Steel Piling
711.10.1 Structural Steel Piles
Furnish new steel “H” piles, melted, and manufactured in the USA, in accordance with AASHTO M 270 Grade 345 MPa (50 ksi) and contract. 2020 EDITION V5.1 REINFORCING STEEL, STRUCTURAL STEEL – 711 HARDWARE, AND MISCELLANEOUS STRUCTURE ITEMS 711-3
711.10.2 Steel Pipe Piles
Furnish new steel pipe piles, melted, and manufactured in the USA, in accordance with ASTM A252, Grade 2 with a minimum yield strength of 45 ksi (310 MPa). Steel pipe diameter and wall thickness is specified in the contract.
711.11 Prestressing Steel
Furnish prestressing steel in accordance with ASTM A416.
711.12 Castings
711.12.1 Steel Castings for Highway Bridges
Furnish castings in accordance with ASTM A148.
711.12.2 Chromium Alloy Steel Castings
Furnish castings made from Grade CA-15 in accordance with AASHTO M 163.
711.12.3 Drainage Structure Castings
Furnish structural drainage castings in accordance with the Detailed Drawings and AASHTO M 306 - HS-20.
711.13 Bearing Assembly Anchor Bolts for Bridges
Furnish anchor bolts sized in accordance with AASHTO M 314.
711.14 Elastomeric Bearing Devices
Furnish elastomeric bearings listed on the QPL, and in accordance with AASHTO M 251 and the contract. For reinforced elastomeric devices, furnish steel laminates in accordance with AASHTO M 270 Grade 36 or ASTM A1011.
711.15 Compression Joint Seals
Furnish preformed elastic joint seals in accordance with the open cell compression seal requirements of ASTM D3542 and the contract. Furnish joint seals that accommodate the design movement specified in the contract and follow the manufacturers recommended installation width. Use the seal manufacturer’s recommended adhesive lubricant for seal installation. Use Lubricant in accordance with ASTM D4070. Furnish a minimum 3-foot (915 mm) long seal sample taken from each size and type furnished on the project. Order the seals 3 feet (915 mm) longer than required for the installation. Submit a copy of the manufacturer’s certificate of compliance in accordance with Subsection 106.03 , attesting that the material meets specifications. Obtain the Project Manager’s approval of all joint seals before installation. Install the seals following the manufacturer’s recommendations. Do not field splice seals. Furnish and install the seals, including these costs in the bid price for structural steel.
711.16 Fiber Reinforced Pads
Furnish vulcanized rubber-fiber pads made from new un-vulcanized rubber and synthetic fibers. Each component must make up 50% of the pads weight. The pad surface must have:
1.A standard rubber hardness of 80 ± 5 Shore A durometer.
2.An ultimate compressive breakdown strength of at least 7,000 psi (48.3 MPa); and
3.A minimum and maximum pad thickness of 1⁄16-inch (2 mm) and ⅛-inch (3 mm), respectively. 711 – REINFORCING STEEL, STRUCTURAL STEEL 2020 EDITION V5.1 HARDWARE, AND MISCELLANEOUS STRUCTURE ITEMS 711-4 Submit the manufacturer’s certification that the pads meet these specifications. A copy of the certification must accompany the shipment to the project. Pads not meeting these requirements will be rejected. Fiber reinforced pads are incidental to and included in payment for other structural steel work.
711.17 Metal Bin-Type Retaining Walls
Furnish metal bin-type retaining walls in accordance with the contract. Furnish the necessary bolts and appurtenances for complete assembly of the members into a continuous closed-face wall of connected bins. Ensure the base metal and spelter coating are in accordance with AASHTO M 218. Use galvanized bolts, nuts, washers, and other hardware in accordance with ASTM A153 or B695 (Class 50, Type I). Ensure all members are fabricated so units of the same nominal size are fully interchangeable. Do not drill, punch, or drift holes to correct defects in manufacture. Replace members having improperly punched holes at Contractor expense. Remove and replace damaged members or members with damaged or broken spelter at Contractor expense. Meet the applicable treatment and handling requirements for bituminous-coated steel structural plate pipe and pipe arches under Section 709 when handling bituminous-treated walls. Repair broken or damaged bituminous coating at Contractor expense.
711.18 Mechanical Rebar Connectors
Furnish any type mechanical connector meeting a yield strength minimum of 125% of the reinforcement and be of a type commonly used and readily available. Splice reinforcement with mechanical connectors of the same material properties and finish. Submit the product data sheet for the proposed type of connector with the specified performance criteria prior to installation.
711.19 Metric Plate Substitution
Substituting standard inch-sized steel plate for metric steel plate is allowed. This applies to AASHTO M 270 Grade 250 steel plate used in the following applications: • Bridge rail • Pre-stressed concrete beams • Bridge guard angles • Bridge pier protection anchors and plates • Fixed shoe bearing devices This does not apply to AASHTO M 270 Grades 345 through 690. Show the metric plate thickness and add a table to the shop drawings similar to Table 711-2 . 2020 EDITION V5.1 REINFORCING STEEL, STRUCTURAL STEEL – 711 HARDWARE, AND MISCELLANEOUS STRUCTURE ITEMS 711-5 TABLE 711-2 STEEL PLATE SUBSTITUTIONS Plate Thickness (inch) Allowable Substitute Plate Thickness (mm) ⅛* 3 3⁄16 5 ¼ 5 or 6 5⁄16 8 ⅜ 10 ½ 12 or 13 ⅝ 16 ¾ 19 or 20 ⅞ 22 1 25 1¼ 30 1½ 38 or 40 *10 gauge ASTM A1011 sheet may also be substituted for 1∕8-inch (3 mm) shim plates 1.20 POLYTETRAFLUOROETHYLENE (PTFE) Furnish PTFE resin in accordance with ASTM D4894 and ASTM D4895 requirements. Use PTFE sheets consisting of pure PTFE resin, molded by pressure and heat, and skived into sheets of 1⁄16-inch (1.5 mm) thick. Finished sheets must conform to the properties listed in Table 711-3. TABLE 711-3 PTFE SHEET PROPERTIES ASTM Test Physical Property Requirement D 4894 Tensile Strength 2800 psi (19.3 MPa) D 4895 Tensile Elongation 200% Furnish stainless steel sheets, if applicable, in accordance with ASTM A167 or ASTM A240 Type 304.
Referenced in this section
Reinforcing Steel, Structural in other states
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Source: Standard Specifications for Road and Bridge Construction, 2020 (v5.1) Edition. Pages 575–580 of 611. View official source ↗