508.02 Concrete Culverts
374 If the centerline of the bearing does not horizontally line up within 2 in [50 mm] of the vertical bearing stiffener, weld additional bearing stiffeners to the steel beam or girder .
E.Elastomeric Bearing Pads Install elastomeric bearing pads between the top of the beam and the bottom of the bridge deck if the Contract requires.
507.05 Method of Measuremen T
The Department will measure the number of completed and accepted Fixed Bearing Assemblies, Expansion Bearing Assemblies , and Elastomeric Bearing Pads listed in the Bid Schedule that are completed and accepted for payment.
507.06 Basis of Payment
The Department will pay for each pay item at the contract unit price per the spec ified pay unit as follows: Pay Item: Pay Unit:
A.STAINLESS STEEL FIXED BEARING ASSEMBLY Each
A.WEATHERING STEEL FIXED BEARING ASSEMBLY Each
B.STAINLESS STEEL EXPANSION BEARING ASSEMBLIES Each
B.WEATHERING STEEL EXPANSION BEARING ASSEMBLIES Each
C.ELASTOMERIC BEARING PADS Each Include the cost of anchor bolts, bearing plates, contact plates, nuts, contact angles, nuts, plain or laminated elastomeric bearing pads, and welding in the contract unit price for Fixed Bearing Assemblies and Expansio n Bearing Assemblies .
508.01 Description
This work consists of constructing concrete culverts including precast structures such as concrete arch culverts.
508.02 Materials
Provide materials in accordance with the following section and subsections: Material: Section or Subsection: Structural Concrete (Class AA) 701.01.A Reinforcing Steel for Structures 723 Joint Materials 726.01.B CONCRETE CULVERTS 508.04 375 Provide precast concrete box sections for culverts in accordance with ASTM C 1577 and in accordance with Contract Documents.
508.03 Equipment — Vacant
508.04 Construction Methods
A.General Complete construction in accordance with Section 501, “Excavation and Backfill for Structures,” Section 502, “Forms, Falsework, and Temporary Works,” Section 509, “Structural Concrete, ” and Section 511, “Reinforcing Steel for Structures.” Precast concrete box culverts may be used instead of cast -in-place concrete box culverts if approved by the Engineer or allowed by the Contract. Do not use precast structures for bridge class structures, unless otherwise indicated. Construct curtain walls as shown on the Plans to prevent undermining. Install a cons truction joint in the culvert if the barrel length of cast -in-place culverts is longer than 100 ft [30 m]. The Department will allow construction joints installed in culverts from 60 ft to 100 ft [18 m to 30 m], unless otherwise required by the Contract. Construct the joint in accordance with Subsection 509.04.D, “Construction Joints.” Extend longitudinal reinforcing steel through the joint at least 18 in [0.5 m], and lap it 18 in [0.5 m] with the longitudinal reinforcing steel in the adjoining section.
B.Finish Apply a Class 2-Rubbed Finish to the exposed wings, curbs, rails, and ret aining walls in accordance with Subsection 509.04.G(2), “Class 2, Rubbed Finish.”
C.Bedding Provide bedding for precast concrete box culverts at least 4 in [100 mm] thick below the precast box sections. Provide be dding material that meets the requirements for Class B bedding in accordance with Subsection 613.04.C, “Bedding. ” The Department will include bedding and necessary excavation for the bedding in the price bid for the structure.
D.Laying Precast Sections Place precast concrete box sections after the Engineer approves the bedding material condition. Slowly lower and place the precast section into final position. Use hoisting equipment that will not damage the section or the bedding material. Clean the inside before lowering the sections into place. Replace damaged sections at no additional cost to the Department. Begin placing the precast sections at the downstream end of the culvert. Join precast sections in accorda nce with Subsection 613.04.H, “Joining Pipe Conduit. ” Place the sections to the line and grade shown on the Plans. After the Engineer’s approval of the placement of the precast culvert, prevent displacement or damag e to the sections when backfilling.
508.06 Concrete Culverts
376 E. Box Culvert End Sections Cast end sections in place for concrete box culverts. End sections include wingwalls, curbs, end of barrels, curtain walls, and aprons. If using precast sections in skewed structures, build wings in the same skewed relationship to the culvert walls as shown on the Plans for the cast -in-place culvert. Build curbs and curtain walls perpendicular to the barrels of precast sections for skews between 90° and 60°.
F.Working Drawings for Precast B ox Sections Provide the Engineer with complete, sealed working drawings of the proposed construction in accordance with Subsection 105.02, “Plans and Working Drawings.” before constructing precast concrete box culverts Show details of reinforcing steel and concrete dimensions.
G.Extension of Existing Cast -in-Place Culvert Extend Perform work to extend an existing cast -in accordance with -place culvert if the contract documents as follows requires: Remove the existing wi ngwalls, curbs, handrails, aprons, and other structures, as shown on the Plans. Repair culvert areas damaged during removal. Provide dowel bars of the same diameter and grade as the longitudinal reinforcing steel in the new adjoining section of culvert. Lap dowel bars 18 in [460 mm] with each longitudinal bar in the new section in accordance with Subsection 509.04.D(3), “Doweling into Existing Concrete.”
508.05 Method of Measuremen T — Vacant
508.06 Basis of Payment
The Department will pay for each pay item at the contract unit price per the specified pay unit as follows: Pay Item: Pay Unit: REMOVAL OF CULVERT END Each The Department will pay for precast concrete box culverts using the contract unit prices for the relevant pay items and quantities as determined by field measurements for cast -in-place concrete box culverts. The Department will pay for quantities of excavation and backfill, reinforcing steel and dowel bars, and concrete used in the construction of con crete culverts in accordance with Section 501, “Excavation and Backfill for Structures, ” Section 511, “Reinforcing Steel for Structures, ” and Section 509, “Structural Concrete ,” respectively. STRUCTURAL CONCRETE 509.04 377 SECTION 509 STRUCTURAL CONCRETE
509.01 Description
This work consists of providing, placing, finishing, and curing structural concrete in bridges, culverts, and other structures.
509.02 Material S
Provide materials in accordance with the following sections and subsection: Material: Section or Subsection: Portland Cement Concrete 701 Supplementary Cementitious Materials 702 Water 701.04 Concrete Surface Finish for Structures 737
509.03 Equipment
Meet the requirements of 414.03A, “Plants and Equipment. ”
509.04 Construction Methods
A.General Handle and measure materials, batching, and mixing in accordance with Subsection 414.04.B, “Handling, Measuring, and Batching Materials,” Subsection 414.04.C, “Mixing Concrete,” and Subsection 414.04.D, “Light and Weather Limitations, ” unless otherwise required by the Contract. Use falsework and forms in accordance with Section 502, “Forms, Falsework, and Temporary Works.” Support concrete until it reaches the Contract required strength. If approved by the Engineer, use maturity meters for form removal or for opening roadways. Submit a plan for using maturity meters at no additional cost to the Department. Perform related work for concrete structures in accordance with Section 502, “Forms, Falsework, and Temporary Works,” Section 503, “Prestressed Concrete Bridge Members, ” Secti on 504, “Bridge Decks, Approaches, Rails, and Parapets,” Section 511, “Reinforcing Steel for Structures ,” and Section 517, “Post -Tensioning.”
B.Protection of Concrete from Environmental Conditions
1.General Protect the concrete from environmental damage during placement and curing. Replace or repair frozen or damaged concrete.
Source: Oklahoma Standard Specifications for Highway Construction, 2019 Edition. Pages 388–390 of 935.