814Description

814.01 DESCRIPTION. Furnish and construct bearings of the type and

dimensions at the specified locations. When existing bearings are replaced, prepare existing areas for installation of new bearings.

814.02 MATERIALS. Comply with the following sections and subsections.

Metals Section 807 , Section 1013 Welding Section 809 Portland Cement Concrete Section 901 Elastomeric Bridge Bearing Pads 1018.14 Grout 1018.04 Stainless steel components shall conform to ASTM A240 / A240M – Type 304. All other steel comp onents shall comply with AASHTO M270, Grade 50.

814.03 SUBMITTALS. Submit bearing Design, Fabrication and Installation

Plan to the Bridge Engineer for review in accordance with Section 801 . Do not begin work until submittal acceptance. Include the following as a minimum:

814.01 DESCRIPTION. Furnish and construct bearings of the type and

dimensions at the specified locations. When existing bearings are replaced, prepare existing areas for installation of new bearings.

814.02 MATERIALS. Comply with the following sections and subsections.

Metals Section 807 , Section 1013 Welding Section 809 Portland Cement Concrete Section 901 Elastomeric Bridge Bearing Pads 1018.14 Grout 1018.04 Stainless steel components shall conform to ASTM A240 / A240M – Type 304. All other steel comp onents shall comply with AASHTO M270, Grade 50.

814.03 SUBMITTALS. Submit bearing Design, Fabrication and Installation

Plan to the Bridge Engineer for review in accordance with Section 801 . Do not begin work until submittal acceptance. Include the following as a minimum:

814.01 DESCRIPTION. Furnish and construct bearings of the type and

dimensions at the specified locations. When existing bearings are replaced, prepare existing areas for installation of new bearings.

814.02 MATERIALS. Comply with the following sections and subsections.

Metals Section 807 , Section 1013 Welding Section 809 Portland Cement Concrete Section 901 Elastomeric Bridge Bearing Pads 1018.14 Grout 1018.04 Stainless steel components shall conform to ASTM A240 / A240M – Type 304. All other steel comp onents shall comply with AASHTO M270, Grade 50.

814.03 SUBMITTALS. Submit bearing Design, Fabrication and Installation

Plan to the Bridge Engineer for review in accordance with Section 801 . Do not begin work until submittal acceptance. Include the following as a minimum:

814.04 CONSTRUCTION REQUIRE MENTS. Construct in accordance with

the latest edition of the AASHTO LRFD B ridge Construction Specifications . Paint steel bearing assembly components exposed to weather, except stainless steel components and bearing surfaces, with a zinc paint system in accordance with Section 811 . Construct anchor bolts in accordance with 807.06.3 . Clean and f inish or machine bearing installation surfaces and provide uniform bearing support. Set bearing to the specified position, grade and elevation. Bearings or masonry plates which rest on steel supports may be directly installed on the supports provided the support is flat within a tolerance of 0.002 times the nominal dimension.

814.04.1 Bearing Types:

814.04.1 1 Elastomeric Bearing Pads: Conform to 1018.14 . Set

elastomeric bearing pads directly on concrete masonry. Place girders when the ambient temperature average of 6 readings is not less than 50°F and not greater than 85°F. When girders are placed at temperatures outside of this range, lift girders or span to reset bearing positions within the specified temperature range. Resetting bearings will be at no additional cost or time to the Department.

814.04.1 2 Contractor Designed Bearing Assembly: Contractor

designed bearings may consist of disc bearings, pot bearings, or other types of bearings as specified on the plans. Perform long -term deterioration testing on a per lot basis. Pre -qualification is not allowed. Perform all testing on full complet e bearing assemblies unless otherwise stated in the plans. The engineer will select the bearing assemblies from each lot to be tested. Acceptance of the bearings will be based on the limits, tolerances, and testing as stated in the latest edition of the AASHTO LRFD Bridge Construction Specifications . Conform to Section 807 , Section 809 , and Section 1013 . Provide bearing designs and construction in accordance with the requirements of the contract.

814.04.1 3 PTFE Sliding Plate Bearing Assembly: When

polytetrafluorethylene (PTFE) sliding plate bearings are specified on the plans,

814.04 CONSTRUCTION REQUIRE MENTS. Construct in accordance with

the latest edition of the AASHTO LRFD B ridge Construction Specifications . Paint steel bearing assembly components exposed to weather, except stainless steel components and bearing surfaces, with a zinc paint system in accordance with Section 811 . Construct anchor bolts in accordance with 807.06.3 . Clean and f inish or machine bearing installation surfaces and provide uniform bearing support. Set bearing to the specified position, grade and elevation. Bearings or masonry plates which rest on steel supports may be directly installed on the supports provided the support is flat within a tolerance of 0.002 times the nominal dimension.

814.04.1 Bearing Types:

814.04.1 1 Elastomeric Bearing Pads: Conform to 1018.14 . Set

elastomeric bearing pads directly on concrete masonry. Place girders when the ambient temperature average of 6 readings is not less than 50°F and not greater than 85°F. When girders are placed at temperatures outside of this range, lift girders or span to reset bearing positions within the specified temperature range. Resetting bearings will be at no additional cost or time to the Department.

814.04.1 2 Contractor Designed Bearing Assembly: Contractor

designed bearings may consist of disc bearings, pot bearings, or other types of bearings as specified on the plans. Perform long -term deterioration testing on a per lot basis. Pre -qualification is not allowed. Perform all testing on full complet e bearing assemblies unless otherwise stated in the plans. The engineer will select the bearing assemblies from each lot to be tested. Acceptance of the bearings will be based on the limits, tolerances, and testing as stated in the latest edition of the AASHTO LRFD Bridge Construction Specifications . Conform to Section 807 , Section 809 , and Section 1013 . Provide bearing designs and construction in accordance with the requirements of the contract.

814.04.1 3 PTFE Sliding Plate Bearing Assembly: When

polytetrafluorethylene (PTFE) sliding plate bearings are specified on the plans,

814.04 CONSTRUCTION REQUIRE MENTS. Construct in accordance with

the latest edition of the AASHTO LRFD B ridge Construction Specifications . Paint steel bearing assembly components exposed to weather, except stainless steel components and bearing surfaces, with a zinc paint system in accordance with Section 811 . Construct anchor bolts in accordance with 807.06.3 . Clean and f inish or machine bearing installation surfaces and provide uniform bearing support. Set bearing to the specified position, grade and elevation. Bearings or masonry plates which rest on steel supports may be directly installed on the supports provided the support is flat within a tolerance of 0.002 times the nominal dimension.

814.04.1 Bearing Types:

814.04.1 1 Elastomeric Bearing Pads: Conform to 1018.14 . Set

elastomeric bearing pads directly on concrete masonry. Place girders when the ambient temperature average of 6 readings is not less than 50°F and not greater than 85°F. When girders are placed at temperatures outside of this range, lift girders or span to reset bearing positions within the specified temperature range. Resetting bearings will be at no additional cost or time to the Department.

814.04.1 2 Contractor Designed Bearing Assembly: Contractor

designed bearings may consist of disc bearings, pot bearings, or other types of bearings as specified on the plans. Perform long -term deterioration testing on a per lot basis. Pre -qualification is not allowed. Perform all testing on full complet e bearing assemblies unless otherwise stated in the plans. The engineer will select the bearing assemblies from each lot to be tested. Acceptance of the bearings will be based on the limits, tolerances, and testing as stated in the latest edition of the AASHTO LRFD Bridge Construction Specifications . Conform to Section 807 , Section 809 , and Section 1013 . Provide bearing designs and construction in accordance with the requirements of the contract.

814.04.1 3 PTFE Sliding Plate Bearing Assembly: When

polytetrafluorethylene (PTFE) sliding plate bearings are specified on the plans,

814.04 CONSTRUCTION REQUIRE MENTS. Construct in accordance with

the latest edition of the AASHTO LRFD B ridge Construction Specifications . Paint steel bearing assembly components exposed to weather, except stainless steel components and bearing surfaces, with a zinc paint system in accordance with Section 811 . Construct anchor bolts in accordance with 807.06.3 . Clean and f inish or machine bearing installation surfaces and provide uniform bearing support. Set bearing to the specified position, grade and elevation. Bearings or masonry plates which rest on steel supports may be directly installed on the supports provided the support is flat within a tolerance of 0.002 times the nominal dimension.

814.04.1 Bearing Types:

814.04.1 1 Elastomeric Bearing Pads: Conform to 1018.14 . Set

elastomeric bearing pads directly on concrete masonry. Place girders when the ambient temperature average of 6 readings is not less than 50°F and not greater than 85°F. When girders are placed at temperatures outside of this range, lift girders or span to reset bearing positions within the specified temperature range. Resetting bearings will be at no additional cost or time to the Department.

814.04.1 2 Contractor Designed Bearing Assembly: Contractor

designed bearings may consist of disc bearings, pot bearings, or other types of bearings as specified on the plans. Perform long -term deterioration testing on a per lot basis. Pre -qualification is not allowed. Perform all testing on full complet e bearing assemblies unless otherwise stated in the plans. The engineer will select the bearing assemblies from each lot to be tested. Acceptance of the bearings will be based on the limits, tolerances, and testing as stated in the latest edition of the AASHTO LRFD Bridge Construction Specifications . Conform to Section 807 , Section 809 , and Section 1013 . Provide bearing designs and construction in accordance with the requirements of the contract.

814.04.1 3 PTFE Sliding Plate Bearing Assembly: When

polytetrafluorethylene (PTFE) sliding plate bearings are specified on the plans,

814.04 CONSTRUCTION REQUIRE MENTS. Construct in accordance with

the latest edition of the AASHTO LRFD B ridge Construction Specifications . Paint steel bearing assembly components exposed to weather, except stainless steel components and bearing surfaces, with a zinc paint system in accordance with Section 811 . Construct anchor bolts in accordance with 807.06.3 . Clean and f inish or machine bearing installation surfaces and provide uniform bearing support. Set bearing to the specified position, grade and elevation. Bearings or masonry plates which rest on steel supports may be directly installed on the supports provided the support is flat within a tolerance of 0.002 times the nominal dimension.

814.04.1 Bearing Types:

814.04.1 1 Elastomeric Bearing Pads: Conform to 1018.14 . Set

elastomeric bearing pads directly on concrete masonry. Place girders when the ambient temperature average of 6 readings is not less than 50°F and not greater than 85°F. When girders are placed at temperatures outside of this range, lift girders or span to reset bearing positions within the specified temperature range. Resetting bearings will be at no additional cost or time to the Department.

814.04.1 2 Contractor Designed Bearing Assembly: Contractor

designed bearings may consist of disc bearings, pot bearings, or other types of bearings as specified on the plans. Perform long -term deterioration testing on a per lot basis. Pre -qualification is not allowed. Perform all testing on full complet e bearing assemblies unless otherwise stated in the plans. The engineer will select the bearing assemblies from each lot to be tested. Acceptance of the bearings will be based on the limits, tolerances, and testing as stated in the latest edition of the AASHTO LRFD Bridge Construction Specifications . Conform to Section 807 , Section 809 , and Section 1013 . Provide bearing designs and construction in accordance with the requirements of the contract.

814.04.1 3 PTFE Sliding Plate Bearing Assembly: When

polytetrafluorethylene (PTFE) sliding plate bearings are specified on the plans,

814.04 CONSTRUCTION REQUIRE MENTS. Construct in accordance with

the latest edition of the AASHTO LRFD B ridge Construction Specifications . Paint steel bearing assembly components exposed to weather, except stainless steel components and bearing surfaces, with a zinc paint system in accordance with Section 811 . Construct anchor bolts in accordance with 807.06.3 . Clean and f inish or machine bearing installation surfaces and provide uniform bearing support. Set bearing to the specified position, grade and elevation. Bearings or masonry plates which rest on steel supports may be directly installed on the supports provided the support is flat within a tolerance of 0.002 times the nominal dimension.

814.04.1 Bearing Types:

814.04.1 1 Elastomeric Bearing Pads: Conform to 1018.14 . Set

elastomeric bearing pads directly on concrete masonry. Place girders when the ambient temperature average of 6 readings is not less than 50°F and not greater than 85°F. When girders are placed at temperatures outside of this range, lift girders or span to reset bearing positions within the specified temperature range. Resetting bearings will be at no additional cost or time to the Department.

814.04.1 2 Contractor Designed Bearing Assembly: Contractor

designed bearings may consist of disc bearings, pot bearings, or other types of bearings as specified on the plans. Perform long -term deterioration testing on a per lot basis. Pre -qualification is not allowed. Perform all testing on full complet e bearing assemblies unless otherwise stated in the plans. The engineer will select the bearing assemblies from each lot to be tested. Acceptance of the bearings will be based on the limits, tolerances, and testing as stated in the latest edition of the AASHTO LRFD Bridge Construction Specifications . Conform to Section 807 , Section 809 , and Section 1013 . Provide bearing designs and construction in accordance with the requirements of the contract.

814.04.1 3 PTFE Sliding Plate Bearing Assembly: When

polytetrafluorethylene (PTFE) sliding plate bearings are specified on the plans, comply with the following requirements. Use companies and shops normally engaged in production of bridge bearings similar to the types specified on the plans to fabricat e sliding plate bearings. Comply with Section 814 as amended herein. Provide stainless steel sliding surfaces operating against a bearing surface of PTFE. Bearings shall be structurally equal to or greater than those shown on the plans and shall be designed to accommodate required movements and reactions. Polish stainless steel in contact with the PTFE sheet to a bright mirror finish, less than 20 micro -inches root mean square. Attach stainless steel to the structural steel substrate with a continuous seal weld in accordance with the applicable requirements of the latest edition of American Welding Society (AWS). Machine all bearing surfaces of steel plates flat to within 0.010 inches per foot. Out-of-flatness greater than 0.010 inches per foot on any plate shall be cause for rejection. Gross dimensions shall have a tolerance of -0 inch, +1/8 inch. Each bearing assembly shall have the project identification number, lot number, and individual bearing number indelibly marked with ink on the side that will be visible after erection. Visually examine each bearing assembly during and after testing. Any resultant defect, such as bond failure, physical destruction, or cold flow of PTFE to the point of debonding, extruded or deformed elastomer, or cracked steel, shall be cause for rejection. Bearing assembly delivered to the construction site shall be stored under cover on a platform above the ground surface. Bearing assembly shall be protected at all times from damage. When erected, the bearing assemblies shall be dry, clean, and free from dirt, oil, grease, or other foreign substances. Bearing assembly shall not be disassembled unless otherwise permitted by the manufacturer or Engineer of Record. Clean the bearing area of any residue deposited from the existing bearing or any other materials that would adversely affect the performance of the new bearing assembly. Set the bearing assembly as shown in the plans. Upon final installation of the bearing assembly, the Project Engineer, in the presence of the manufacturer’s representative if required, will inspect the bearing components to assure that they are level and parall el to within + 0.005 radians. Correct deviations not conforming to the specified tolerances.

814.04.1 3.1 Construction Methods: After fabrication before

bonding, plane stainless steel or PTFE back -up material to a true plane. Bonding of PTFE sheets shall be performed by the bearing manufacturer under controlled conditions and in accordance with written instructions of the adhesive system manufacturer. Side of PTFE sheet to be bonded to metal shall be factory treated by comply with the following requirements. Use companies and shops normally engaged in production of bridge bearings similar to the types specified on the plans to fabricat e sliding plate bearings. Comply with Section 814 as amended herein. Provide stainless steel sliding surfaces operating against a bearing surface of PTFE. Bearings shall be structurally equal to or greater than those shown on the plans and shall be designed to accommodate required movements and reactions. Polish stainless steel in contact with the PTFE sheet to a bright mirror finish, less than 20 micro -inches root mean square. Attach stainless steel to the structural steel substrate with a continuous seal weld in accordance with the applicable requirements of the latest edition of American Welding Society (AWS). Machine all bearing surfaces of steel plates flat to within 0.010 inches per foot. Out-of-flatness greater than 0.010 inches per foot on any plate shall be cause for rejection. Gross dimensions shall have a tolerance of -0 inch, +1/8 inch. Each bearing assembly shall have the project identification number, lot number, and individual bearing number indelibly marked with ink on the side that will be visible after erection. Visually examine each bearing assembly during and after testing. Any resultant defect, such as bond failure, physical destruction, or cold flow of PTFE to the point of debonding, extruded or deformed elastomer, or cracked steel, shall be cause for rejection. Bearing assembly delivered to the construction site shall be stored under cover on a platform above the ground surface. Bearing assembly shall be protected at all times from damage. When erected, the bearing assemblies shall be dry, clean, and free from dirt, oil, grease, or other foreign substances. Bearing assembly shall not be disassembled unless otherwise permitted by the manufacturer or Engineer of Record. Clean the bearing area of any residue deposited from the existing bearing or any other materials that would adversely affect the performance of the new bearing assembly. Set the bearing assembly as shown in the plans. Upon final installation of the bearing assembly, the Project Engineer, in the presence of the manufacturer’s representative if required, will inspect the bearing components to assure that they are level and parall el to within + 0.005 radians. Correct deviations not conforming to the specified tolerances.

814.04.1 3.1 Construction Methods: After fabrication before

bonding, plane stainless steel or PTFE back -up material to a true plane. Bonding of PTFE sheets shall be performed by the bearing manufacturer under controlled conditions and in accordance with written instructions of the adhesive system manufacturer. Side of PTFE sheet to be bonded to metal shall be factory treated by an approved manufacturer by the sodium naphthalene or sodium ammonia process. After bonding operations, the PTFE surface shall be smooth, flat and free from bubbles. Filled PTFE surfaces shall then be polished. Fabric shall be capable of carrying unit loads of 10 ksi without cold flow. Bond or mechanically attach PTFE fabric to a rigid substrate. The fabric -substrate bond shall be capable of withsta nding a shear force equal to 10 percent of the perpendicular application loading without delaminating in addition to the shear force developed as a result of the natural bearing friction shear force. The test method shall comply with ASTM D 1002. Welding to steel plate which has a bonded PTFE surface will be permitted providing a welding procedure is established and accepted, which restricts temperature reached by the bond area to less than 300°F as determined by temperature indicating wax pencils, or other suitable means. The clad plate shall comply with ASTM A 264. In lieu of clad plate, the stainless steel plate may be continuously Tungsten Inert Gas Fillet Welded to the sole plate. The back -up plate for the PTFE surface shall be factory vulcanized to the lower neoprene bearing element. Where unfilled PTFE sheet is used, recess PTFE in backup plate by one -half of the PTFE sheet thickness. Assemble bearings at the plant, mark for identification and deliver as a complete unit. Bearings shall have permanent match marks to indicate the normal position of the bearing. During transportation and storage, cover bearings with moisture proof and dust proof covers, and protect against damage. Furnish manufacturer’ s certification of steel, elastomeric pads, PTFE and other materials used in fabrication of bearings.

814.04.1 3.2 Fabrication Inspection : Fabrication will be inspected

by the Construction Section in accordance with Section 807 and the following. Tests for coefficient of friction shall be performed by the manufacturer or in an approved laboratory. Test one completed bearing from each group. Test methods and equipment shall be approved and shall include, but not be limited to, the following: Arrange tests so that the coefficient of friction at first movement of bearing can be determined. Clean bearing surfaces prior to testing and a silicon e gel may be added to the surfaces. When silicone gel is used between the bearing surfaces during the test, apply silicone gel to each bearing either before assembly at the fabrication plant or before erection in the field. Conduct tests at maximum working stress for the PTFE working surface with test load supplied continuously for 12 hours prior to measuring friction. an approved manufacturer by the sodium naphthalene or sodium ammonia process. After bonding operations, the PTFE surface shall be smooth, flat and free from bubbles. Filled PTFE surfaces shall then be polished. Fabric shall be capable of carrying unit loads of 10 ksi without cold flow. Bond or mechanically attach PTFE fabric to a rigid substrate. The fabric -substrate bond shall be capable of withsta nding a shear force equal to 10 percent of the perpendicular application loading without delaminating in addition to the shear force developed as a result of the natural bearing friction shear force. The test method shall comply with ASTM D 1002. Welding to steel plate which has a bonded PTFE surface will be permitted providing a welding procedure is established and accepted, which restricts temperature reached by the bond area to less than 300°F as determined by temperature indicating wax pencils, or other suitable means. The clad plate shall comply with ASTM A 264. In lieu of clad plate, the stainless steel plate may be continuously Tungsten Inert Gas Fillet Welded to the sole plate. The back -up plate for the PTFE surface shall be factory vulcanized to the lower neoprene bearing element. Where unfilled PTFE sheet is used, recess PTFE in backup plate by one -half of the PTFE sheet thickness. Assemble bearings at the plant, mark for identification and deliver as a complete unit. Bearings shall have permanent match marks to indicate the normal position of the bearing. During transportation and storage, cover bearings with moisture proof and dust proof covers, and protect against damage. Furnish manufacturer’ s certification of steel, elastomeric pads, PTFE and other materials used in fabrication of bearings.

814.04.1 3.2 Fabrication Inspection : Fabrication will be inspected

by the Construction Section in accordance with Section 807 and the following. Tests for coefficient of friction shall be performed by the manufacturer or in an approved laboratory. Test one completed bearing from each group. Test methods and equipment shall be approved and shall include, but not be limited to, the following: Arrange tests so that the coefficient of friction at first movement of bearing can be determined. Clean bearing surfaces prior to testing and a silicon e gel may be added to the surfaces. When silicone gel is used between the bearing surfaces during the test, apply silicone gel to each bearing either before assembly at the fabrication plant or before erection in the field. Conduct tests at maximum working stress for the PTFE working surface with test load supplied continuously for 12 hours prior to measuring friction. Determine first movement static and dynamic coefficients of friction of test bearings at a sliding speed of less than 1 inch per minute and not exceeding 75 percent of the coefficient of friction specified in Table 814 -1. Table 814-1 Coefficient of Friction of Bearing Bearing Pressure1 500 psi 2000 psi 3500 psi Coefficient of Friction Unfilled PTFE, Fabric containing PTFE fibers, and PTFE Perforated Metal Composite 0.08 0.06 0.04 Filled PTFE 0.12 0.10 0.08 1 The actual bearing pressure shall be provided to the fabricator upon request. Subject bearing specimens to 100 movements of at least 1 inch of relative movement and if the test facility permits, full design movement at a speed of less than 1 foot per minute. Following this test, determine static and dynamic coefficients of friction again and do not exceed values measured in part 4 above. Bearing specimen shall show no appreciable sign of bond failure or other defects. Bearings represented by test specimens passing above requirements will be accepted subject to onsite inspection for visible defects.

814.04.1 4 Cast Iron or Steel or Rolled Steel Bearings : Conform

to Section 807 , Section 809 , and Section 1013 . Set cast iron or steel or rolled steel bearings on the masonry with a preformed fabric bearing pad.

814.05 MEASUREMENT . Elastomeric bearing pads will be measured by the

square foot-inch. Bearing assemblies will be measured per each. Measurement for elastomeric bearing pads and bearing assemblies will include all materials between the bottom of the girder flange or sole plate and the substructure bearing installation surface, as specified in the plans. Resetting bearings to specified temperature range will not be measured for payment.

814.06 PAYMENT. Payment for bearings will include all material, labor,

equipment, tools, testing, and incidentals necessary to complete the work. Payment will be at the contract unit price under: Determine first movement static and dynamic coefficients of friction of test bearings at a sliding speed of less than 1 inch per minute and not exceeding 75 percent of the coefficient of friction specified in Table 814 -1. Table 814-1 Coefficient of Friction of Bearing Bearing Pressure1 500 psi 2000 psi 3500 psi Coefficient of Friction Unfilled PTFE, Fabric containing PTFE fibers, and PTFE Perforated Metal Composite 0.08 0.06 0.04 Filled PTFE 0.12 0.10 0.08 1 The actual bearing pressure shall be provided to the fabricator upon request. Subject bearing specimens to 100 movements of at least 1 inch of relative movement and if the test facility permits, full design movement at a speed of less than 1 foot per minute. Following this test, determine static and dynamic coefficients of friction again and do not exceed values measured in part 4 above. Bearing specimen shall show no appreciable sign of bond failure or other defects. Bearings represented by test specimens passing above requirements will be accepted subject to onsite inspection for visible defects.

814.04.1 4 Cast Iron or Steel or Rolled Steel Bearings : Conform

to Section 807 , Section 809 , and Section 1013 . Set cast iron or steel or rolled steel bearings on the masonry with a preformed fabric bearing pad.

814.05 MEASUREMENT . Elastomeric bearing pads will be measured by the

square foot-inch. Bearing assemblies will be measured per each. Measurement for elastomeric bearing pads and bearing assemblies will include all materials between the bottom of the girder flange or sole plate and the substructure bearing installation surface, as specified in the plans. Resetting bearings to specified temperature range will not be measured for payment.

814.06 PAYMENT. Payment for bearings will include all material, labor,

equipment, tools, testing, and incidentals necessary to complete the work. Payment will be at the contract unit price under: Determine first movement static and dynamic coefficients of friction of test bearings at a sliding speed of less than 1 inch per minute and not exceeding 75 percent of the coefficient of friction specified in Table 814 -1. Table 814-1 Coefficient of Friction of Bearing Bearing Pressure1 500 psi 2000 psi 3500 psi Coefficient of Friction Unfilled PTFE, Fabric containing PTFE fibers, and PTFE Perforated Metal Composite 0.08 0.06 0.04 Filled PTFE 0.12 0.10 0.08 1 The actual bearing pressure shall be provided to the fabricator upon request. Subject bearing specimens to 100 movements of at least 1 inch of relative movement and if the test facility permits, full design movement at a speed of less than 1 foot per minute. Following this test, determine static and dynamic coefficients of friction again and do not exceed values measured in part 4 above. Bearing specimen shall show no appreciable sign of bond failure or other defects. Bearings represented by test specimens passing above requirements will be accepted subject to onsite inspection for visible defects.

814.04.1 4 Cast Iron or Steel or Rolled Steel Bearings : Conform

to Section 807 , Section 809 , and Section 1013 . Set cast iron or steel or rolled steel bearings on the masonry with a preformed fabric bearing pad.

814.05 MEASUREMENT . Elastomeric bearing pads will be measured by the

square foot-inch. Bearing assemblies will be measured per each. Measurement for elastomeric bearing pads and bearing assemblies will include all materials between the bottom of the girder flange or sole plate and the substructure bearing installation surface, as specified in the plans. Resetting bearings to specified temperature range will not be measured for payment.

814.06 PAYMENT. Payment for bearings will include all material, labor,

equipment, tools, testing, and incidentals necessary to complete the work. Payment will be at the contract unit price under: Determine first movement static and dynamic coefficients of friction of test bearings at a sliding speed of less than 1 inch per minute and not exceeding 75 percent of the coefficient of friction specified in Table 814 -1. Table 814-1 Coefficient of Friction of Bearing Bearing Pressure1 500 psi 2000 psi 3500 psi Coefficient of Friction Unfilled PTFE, Fabric containing PTFE fibers, and PTFE Perforated Metal Composite 0.08 0.06 0.04 Filled PTFE 0.12 0.10 0.08 1 The actual bearing pressure shall be provided to the fabricator upon request. Subject bearing specimens to 100 movements of at least 1 inch of relative movement and if the test facility permits, full design movement at a speed of less than 1 foot per minute. Following this test, determine static and dynamic coefficients of friction again and do not exceed values measured in part 4 above. Bearing specimen shall show no appreciable sign of bond failure or other defects. Bearings represented by test specimens passing above requirements will be accepted subject to onsite inspection for visible defects.

814.04.1 4 Cast Iron or Steel or Rolled Steel Bearings : Conform

to Section 807 , Section 809 , and Section 1013 . Set cast iron or steel or rolled steel bearings on the masonry with a preformed fabric bearing pad.

814.05 MEASUREMENT . Elastomeric bearing pads will be measured by the

square foot-inch. Bearing assemblies will be measured per each. Measurement for elastomeric bearing pads and bearing assemblies will include all materials between the bottom of the girder flange or sole plate and the substructure bearing installation surface, as specified in the plans. Resetting bearings to specified temperature range will not be measured for payment.

814.06 PAYMENT. Payment for bearings will include all material, labor,

equipment, tools, testing, and incidentals necessary to complete the work. Payment will be at the contract unit price under: Item No. Pay Item Pay Unit 814-01 Elastomeric Bearing Pads (Non - Reinforced) Square Foot -Inch 814-02 Elastomeric Bearing Pads (Reinforced) Square Foot -Inch 814-03 Bearing Assembly (Type) Each Section 815 Joints

815.01 DESCRIPTION. Furnish and construct joints of the type, dimensions,

and at the locations specified. Joints are composed of metalwork plates, metalwork extrusions, or concrete nosing on both sides of the joint opening. Joints may contain a seal to prevent water and debris from passing through the joint opening. When existing joints are to be replaced, prepare the existing area for installation of new joints.

815.02 MATERIALS Comply with the following:

Metals Section 807 , Section 1013 Welding Section 809 Portland Cement Concrete Section 901 Joint Fillers 1005.01 Joint Seals Section 1005 Unless otherwise specified, steel used in joint system fabrication, including barrier armoring, shall be AASHTO M270 Grade 50, and shall be hot dip galvanized after fabrication in accordance with Sectio n 811 . Use A325 high strength fastener assemblies in the sizes and lengths specified and in accordance with Section 807 . Type 1 bolts, nuts, washers, and DTIs shall be mechanically galvanized in accordance with 811.08 .

815.03 Submittals.

When specified, submit a Joint Design, Fabrication Plan, and Installation Plan to the Bridge Engineer for review in accordance with Section 801 . Do not begin work until submittal acceptance. Acceptance by the engineer will be subject to field performance and will not relieve the contractor of the responsibility to satisfactorily complete the work. Include the following as a minimum: