623.01 671 SECTION 623 – BRIDGE EXPANSION JOINTS
623.01 Scope of Work ................................ ................................ ............. 671
623.02 Modular Roadway Expansion Joints ................................ ............ 671
623.03 Strip Seal Expansion Joints ................................ .......................... 675
623.04 Method of Measurement ................................ .............................. 678
623.05 Basis of Payment ................................ ................................ .......... 678
DESCRIPTION
623.01 Scope of Work
This work consist s of fabricating and installing shop fabricated bridge expansion joint systems , of the general size, configuration, and joint movement specified.
623.02 Modular Roadway Expansion Joints
This Subsection is applicable to expansion joints having a required movement in excess of 4 inches.
A.Fatigue Design Provide certification that all proposed modular expansion devices have been tested in accordance with the National Research Program Report 467 Performance Testing for Modu lar Bridge Joint Systems .
B.Materials
1.General. All parts and elements shall be of the material and design indicated in the manufacturer’s catalog, except as otherwise specified in the Contract or shown on the Plans.
2.Steel Plates, Bars, Rolled Shapes, and Extrusions. All steel plates, bars, rolled sh apes, and extrusions shall be fabricated from high-strength, low alloy grade 50S, HPS50W steel, conforming to the requirements of ASTM A709 grade 50 or 50W, as shown on approved shop drawings. Anchor bars may be A36 steel. All membrane retainers shall ha ve a 3/8-inch minimum thickness. 623.02 672 Stainless steel sheets for the sliding surfaces of the support bars shall conform to the requirements of ASTM A167, alloy 304, 20 micro - inch RMS finish. Anchor bolts, bolts, nuts, and washers shall conform to the requiremen ts of ASTM F1554, as shown on the Plans.
3.Preformed Elastomeric Seals. The elastomeric sealing element shall be a polychloroprene (neoprene) seal that is resistant to heat, oil, jet fuel, and ozone. The seal shall be one -piece full length of the expansion joint, including curb and parapet face projections. In addition, the sealing elements shall conform to ASTM D2628, modified to omit the recovery test and to meet the requirements specified in Table 623.02 -1. Table 623.02 -1: Elastomeric Sealing Element Hardness Property Requirement ASTM Method Hardness Type A 60 +/- 7 Durometer D2240 Modified To install the preformed elastomeric elements in place, use as a lubricant/adhesive a one -part moisture -curing, polyurethane and hydrocarbon solvent mixture or as recommended by the manufacturer and approved by the Engineer.
4.Support Bar Bearings. Use support bar bearings fabricated from polyurethane compound with polytetrafluorethylene (PTFE) self - lubricating surfaces having engineering properties equivalent to adiprene, teflon or cast nylon w/MDS (molybdenum disulfide) (i.e., high-load bearing and high -impact resistance characteristics plus low coefficient of friction).
5.Joint Control Mechanism. To ensure equal distribution of the total joint opening, provide suitable equilibrium type springs that operate counter to compression fo rces of the sealing elements and co -linear with the axis of structure movement.
6.Support Bars. Provide support bars that as a minimum: 623.02 673 a. Incorporate stainless steel sliding surfaces to minimize resistance to joint movements.
b.Provide support above, belo w, and laterally as required to prevent lifting, transmit bearing loads, and maintain positioning of the bar. Place support bars at right angles to each transverse rail.
c.Are at least 2 inches in width and 3 inches in height, and that will ensure that e ach transverse rail (separation beam) will rest on a separate support bar at each support assembly.
7.Separation Beams/Transverse Dividers. Separation beams/transverse dividers shall be at least 2 -1/2 inches in top width and 4 inches in height and shall be designed for the design live load (AASHTO HS 20 -44 minimum plus 50% for impact), using working stress limits. Analyze support bars and transverse rails using both vertical and horizontal live load components.
8.Miscellaneous Hardware. Provide miscellaneous hardware as described in the manufacturer’s literature.
C.Fabrication and Construction The manufacturer of the prefabricated expansion joint assembly shall prepare shop drawings showing details of the assembly and installation. Installation drawings shall include concrete, reinforcing steel and/or anchorage details falling within the respective modular joint stress zones.
1.Construct the expansion joint systems as shown on the shop drawings. Meet the tolerance requirements included in AASHTO specifications. Perform all welding according to AWS specifications and by certified welders only. Ensure that fabricators are certified under the AISC Quality Certification, Category I, Simple Steel Bridges, SBR -1B.
2.Shop drawings shall also supply in formation regarding material specifications, geometry, a table of variable temperature and dimensions , and a bill of material. The maximum joint opening for a single modular unit shall be 4 inches measured at right angles to the rails. 623.02 674 3. With the excepti on of the stainless steel elements, either paint all steel in accordance with System A as specified in 603.06, or galvanize it, unless otherwise shown on the Plans.
4.Ensure that t he profile of the joint in the pavement area conforms to the roadway cross -section, slope, skew , and grade. Provide s lider plates at curbs, walkways, and parapets, as part of the completed joint assembly, in accordance with details shown on the Plans and Standard Drawings.
5.Preset the modular expansi on joint assembly in accordance with approved shop drawings, joint setting data, and specifications. Secure the assembly for shipping. Provide the assembly with temporary self -aligning guide angles or other structural members to span over the block -out for joints and allow for proper grade and elevation adjustment between the bridge deck and approach roadway. Make final adjustment at the discretion of the Engineer. Account for all movements due to factors such as shrinkage, creep, and mid -slab deflectio n, before making this final adjustment. Obtain the permission of the joint manufacturer’s technical representative to make any adjustments other than for temperature settings.
6.Properly position and attach t he prefabricated joint assembly to the superst ructure using the anchorages provided with the assembly.
7.Do not use drilled and grouted or cast -in-place inserts to anchor the expansion device to the structure. Accomplish a nchorage by attachment to each longitudinal bridge girder, supplemented by 2-inch wide straps, providing no less than 1.25 square inches of cross-sectional area per linear foot of expansion joint between direct connections at girders. The straps shall be a minimum length of 1 foot with a 2-inch, 90-degree bend at the free end.
8.Ensure that g irder attachments provide a means of adjustment so that the expansion device can be installed to line and grade in conformance with approved shop drawings , the Plans, and the manufacturer ’s recommendations.
9.Use a similar c onfiguration for the backwall anchorage. 623.03 675 10. Coordinate with the joint supplier, remain -in-place form supplier, and/or beam fabricator to ensure that all details impacting the acceptable installation of the expansion joint are in harmony.
11.Clean formed recesses of foreign material and prepare by an approved method. Ensure that d eck concrete is well consolidated behind and around both sides of the joint edge rails and support boxes.
D.Installatio n Supervision and Certification A manufacturer’ s representati ve shall be present at the time of installation to assist the Contractor in the proper setting of the joint. If the individual representing the manufacturer is not a full -time employee of the manufacturer, provide written certification that the individual is a duly authorized agent of the manufacturer before beginning joint installation. After installation, the representative shall inspect and certify to the Engineer that the joint has been installed in accordance with the manufacturer ’s recommendations, and that it is water tight. The Engineer will not accept j oints for which such certifications are not provided. The Contractor and the manufacturer’s representative shall conduct t ests for water -tightness in the presence of the Engineer by ponding water upon the joint for a period of 15 minutes. Take corrective measures to eliminate all leaks.
623.03 Strip Seal Expansion Jo ints
A.Description of Work This Subsection is applicable to expansion joints having a required movement of 4 inches or less.
B.Materials
1.General. All parts and elements shall be of the material and design indicated in the manufacturer’s catalog, except as otherwise specified in these provisions or shown on the Plans.
2.Steel Plates, Bars, Rolled Shapes, and Extrusions. All steel plates, bar s and shapes shall be fabricated from high -strength, low 623.03 676 alloy Grade 50 steel, conforming to the requirements of ASTM A709 Grade 50 or 50W, as shown on approved shop drawings. Anchor bars and plates may be A36 steel. The membrane retainer may be either a n extrusion or rolled shape. Anchor bolts, bolts, nuts, and washers shall conform to the requirements of ASTM A307, as shown on the Plans.
3.Preformed Elastomeric Seals. The elastomeric sealing element shall be EPDM or a polychloroprene (neoprene) seal that is resistant to heat, oil, jet fuel, and ozone. The seal shall be one piece full length of the expansion joint including curb and parapet face projections. The seal shall be a mechanically locked seal element placed in a solid steel extrusion or rolled shape conforming to the Plans dimensions. In addition, the sealing elements shall conform to ASTM D2628, modified to omit the recovery test and to meet the requirements specified in Table 623.02 -1 above. To install preformed elastomeric elements in place, use as a lubricant/adhesive a one -part moisture -curing, polyurethane and hydrocarbon solvent mixture or as recommended by the manufacturer and approved by the Engineer.
4.Miscellaneous Hardware. Provide miscellaneous hardware as described in the manufacturer’s literature.
C.Fabrication and Construction
1.The manufacturer of the prefabricated expansion joint assembly shall prepare shop drawings showing details of the assembly and installation. In stallation drawings shall include concrete, reinforcing steel and/or anchorage details falling within the respective joint zones. The shop drawings shall also show any changes to the reinforcing steel or concrete limits from the Plans due to the type join t being used.
2.Shop drawings shall also supply information regarding material specifications, geometry, a table of variable temperature and dimensions, and a bill of material. The maximum joint opening shall be 4 inches. Construct the expansion joint s ystems in accordance with the details shown on the shop drawings. Tolerance 623.03 677 requirements shall be in accordance with AASHTO Specifications. Perform all welding in accordance with AWS specifications and by certified welders only. Ensure that fabricators are certified under the AISC Quality Certification, Category I, Conventional Steel Structures.
3.Ensure that the profile of the joint conforms to the roadway cross - section, slope, skew, and grade.
4.Either paint a ll steel that is part of the joint assemb ly in accordance with System A as specified in 603.06, or galvanize in accordance with ASTM A 123, unless shown otherwise on the Plans.
5.Properly position and attach the prefabricated joint assembly to the superstructure using t he anchorages provided with the assembly.
6.Do not use drilled and grouted or cast -in-place inserts to anchor the expansion device to the structure on new construction. Accomplish anchorage by attachment to each longitudinal bridge girder, supplemented b y 2-inch wide straps, providing no less than
1.25 square inches of cross -sectional area per linear foot of
expansion joint between direct connections at girders. The straps shall be a minimum length of 1 foot with a 2 -inch, 90-degree bend at the free end.
7.Anchorage details for repair of expansion joints on existing structures shall be as shown on the Contract drawings and/or approved shop drawings.
8.Ensure that girder attachments provide a means of adjustment so that the expansion device can be instal led to line and grade in conformance with approved shop drawings, the Plans, and the manufacturer’s recommendations.
9.Use a similar configuration for the backwall anchorage.
10.Coordinate with the joint supplier, remain -in-place form supplier, and/or be am fabricator to ensure that all details impacting the acceptable installation of the expansion joint are in harmony.
11.Clean formed recesses of foreign material and prepare by an approved method. Ensure that deck concrete is well consolidated behind and around both sides of the joint steel. 623.04 678 COMPENSATION
623.04 Method of Measurement
The Department will measure expansion joints of each kind horizontally by the linear foot along the center of the joint from outer face to outer face of the concrete supers tructure of the bridge. The Department will consider slider plate assemblies at curbs, walkways, medians, median barriers , and parapets to be incidental to the items for the expansion joint systems and will not measure and pay for them directly .
623.05 Basis of Payment
The Department will pay for accepted quantities at the contract prices as follows: Item Pay Unit Modular Roadway Expansion Joints Linear Feet Strip Seal Expansion Joints Linear Feet
A.Modular Roadway Expansion Joints Payment for Modular Roadway Expansion Joints is full compensation for furnishing and installing the device complete in place, including all labor, materials, equipment , and other incidentals necessary to complete the work. The Department will pay for the deck concrete placed within the limits of the expansion joint block -outs at the applicable contract unit price per cubic yard. Otherwise, the cost of all modifications of bridge details, including parapet and/or median slider plate assemblies, forming for adequate blo ck-outs of the concrete deck slab, and any additional reinforcing steel required in the concrete deck slab block -outs, necessary to properly install the roadway expansion joint shall be included in the price bid for the joint.
B.Strip Seal Expansion Joints Payment for Strip Seal Expansion Joints is full compensation for furnishing and installing the device complete in place, including all 623.05 679 labor, materials, equipment, and other incidentals necessary to complete the work. Modifications of bridge details includi ng parapet and/or median slider plate assemblies that are necessary to properly install the roadway expansion joint shall be included in the price bid for the joint.
Part 7
680 PART 7 – INCIDENTAL CONSTRUCTION AND SERVICES SECTION 701 – CEMENT CONCRETE SIDEWALKS, DRIVEWAYS AND MEDIAN PAVEMENT ........................... 681 SECTION 702 – CEMENT CONCRETE CURB, GUTTER, AND COMBINED CURB AND GUTTER ................................ .......... 687 SECTION 703 – CEMENT CONCRETE DITCH PAVING ................... 692 SECTION 705 – GUARDRAIL ................................ ............................... 696 SECTION 706 – GUARDRAIL ADJUSTED, REMOVED AND RESET ................................ ................................ ......................... 701 SECTION 707 – FENCES ................................ ................................ ........ 705 SECTION 708 – MONUMENTS AND MARKERS ............................... 710 SECTION 709 – RIPRAP AND SLOPE PAVEMENT ............................ 714 SECTION 710 – UNDERDRAINS ................................ .......................... 722 SECTION 711 – CONCRETE MEDIAN BARRIER ............................... 728 SECTION 712 – TEMPORARY TRAFFIC CONTROL ......................... 731 SECTION 713 – HIGHWAY SIGNING ................................ .................. 748 SECTION 714 – ROADWAY AND STRUCTURE LIGHTING ............ 756 SECTION 715 – ASPHALTIC CONCRETE CURB (HOT MIX) ........... 780 SECTION 716 – PAVEMENT MARKINGS ................................ ........... 784 SECTION 717 – MOBILIZATION OF FORCES, SUPPLIES AND EQUIPMENT ................................ ................................ .............. 799 SECTION 722 – FIELD OFFICE ................................ ............................. 801 SECTION 730 – TRAFFIC SIGNALS ................................ ..................... 807 SECTION 740 – GEOSYNTHETICS ................................ ...................... 866 701.01 681 SECTION 701 – CEMENT CONCRETE SIDEWALKS, DRIVEWAYS AND MEDIAN PAVEMENT
701.01 Description ................................ ................................ ................... 681
701.02 Materials ................................ ................................ ...................... 681
701.03 Equipm ent ................................ ................................ .................... 682
701.04 Preliminary Work ................................ ................................ ......... 682
701.05 Subgrade Preparation ................................ ................................ ... 682
701.06 Expansion Joints ................................ ................................ .......... 683
701.07 Limitations on Mixing ................................ ................................ . 683
701.08 Mixing and Placing Concrete ................................ ....................... 683
701.09 Finishing ................................ ................................ ...................... 683
701.10 Protection and Curing ................................ ................................ .. 684
701.11 Backfilling ................................ ................................ ................... 685
701.12 Final Cleanup ................................ ................................ ............... 685
701.13 Method of Measurement ................................ .............................. 685
701.14 Basis of Payment ................................ ................................ .......... 686
DESCRIPTION
701.01 Description
This work consists of constructing, on a prepared subgrade, Portland cement concrete Sidewalks, Driveways, and Median Pavement, excluding those Sidewalks, Driveways, and Median Pavement that are integrally part of structures. MATERIALS
701.02 Materials
Provide materials as specified in: Preformed Joint Filler ................................ ............................ 905.01 Cement Concrete Curing Materials ................................ ............ 913 Drain Pipe, Standard Strength ................................ ............... 914.04
Source: Tennessee Standard Specifications for Road and Bridge Construction, 2021 Edition. Pages 680–689 of 1,072.