Movable Bridges
820.01 DESCRIPTION. Provide all material, equipment, tools, measuring
devices, and labor to purchase/fabricate, shop test, transport, install/erect, align/adjust, paint, lubricate, field test, and setup a Movable Bridge as specified herein. These specification govern both new construction projects and rehabi litation/ repair projects.
820.01.1 Structural Specifications: All specifications for bridges in other
sections that are applicable to the structure of a Movable Bridge shall apply, unless otherwise specified herein or shown on the plans.
820.01.2 Mechanical System Speci fications: See Section 821 for
Mechanical System specifications.
820.01.3 Electrical System Specifications: See Section 822 for
Electrical System specifications.
820.01.4 Operator’s House/Machinery House Specifications: See
Section 823 for Operator’s House/Machinery House specifications.
820.02 ACRONYMS AND ABBREVI ATIONS. See 101.02 , 801.02 , 821.02 ,
and 822.02 for acronyms and abbreviations.
820.03 DEFINITIONS. See 101.03 , 801.03 , 821.03 , and 822.03 for additional
definitions. Balance Blocks . Concrete blocks that can be added or removed from a counterweight to adjust the counterbalance of a movable span, usually weighing approximately 80 pounds. Bobtail Swing Span Bridge. A swing span bridge where the length of the movable span on the channel side of the pivot girder is longer than the opposite length. Balancing the span requires a counterweight. Movable Bridges
820.01 DESCRIPTION. Provide all material, equipment, tools, measuring
devices, and labor to purchase/fabricate, shop test, transport, install/erect, align/adjust, paint, lubricate, field test, and setup a Movable Bridge as specified herein. These specification govern both new construction projects and rehabi litation/ repair projects.
820.01.1 Structural Specifications: All specifications for bridges in other
sections that are applicable to the structure of a Movable Bridge shall apply, unless otherwise specified herein or shown on the plans.
820.01.2 Mechanical System Speci fications: See Section 821 for
Mechanical System specifications.
820.01.3 Electrical System Specifications: See Section 822 for
Electrical System specifications.
820.01.4 Operator’s House/Machinery House Specifications: See
Section 823 for Operator’s House/Machinery House specifications.
820.02 ACRONYMS AND ABBREVI ATIONS. See 101.02 , 801.02 , 821.02 ,
and 822.02 for acronyms and abbreviations.
820.03 DEFINITIONS. See 101.03 , 801.03 , 821.03 , and 822.03 for additional
definitions. Balance Blocks . Concrete blocks that can be added or removed from a counterweight to adjust the counterbalance of a movable span, usually weighing approximately 80 pounds. Bobtail Swing Span Bridge. A swing span bridge where the length of the movable span on the channel side of the pivot girder is longer than the opposite length. Balancing the span requires a counterweight. Movable Bridges
820.01 DESCRIPTION. Provide all material, equipment, tools, measuring
devices, and labor to purchase/fabricate, shop test, transport, install/erect, align/adjust, paint, lubricate, field test, and setup a Movable Bridge as specified herein. These specification govern both new construction projects and rehabi litation/ repair projects.
820.01.1 Structural Specifications: All specifications for bridges in other
sections that are applicable to the structure of a Movable Bridge shall apply, unless otherwise specified herein or shown on the plans.
820.01.2 Mechanical System Speci fications: See Section 821 for
Mechanical System specifications.
820.01.3 Electrical System Specifications: See Section 822 for
Electrical System specifications.
820.01.4 Operator’s House/Machinery House Specifications: See
Section 823 for Operator’s House/Machinery House specifications.
820.02 ACRONYMS AND ABBREVI ATIONS. See 101.02 , 801.02 , 821.02 ,
and 822.02 for acronyms and abbreviations.
820.03 DEFINITIONS. See 101.03 , 801.03 , 821.03 , and 822.03 for additional
definitions. Balance Blocks . Concrete blocks that can be added or removed from a counterweight to adjust the counterbalance of a movable span, usually weighing approximately 80 pounds. Bobtail Swing Span Bridge. A swing span bridge where the length of the movable span on the channel side of the pivot girder is longer than the opposite length. Balancing the span requires a counterweight. Movable Bridges
820.01 DESCRIPTION. Provide all material, equipment, tools, measuring
devices, and labor to purchase/fabricate, shop test, transport, install/erect, align/adjust, paint, lubricate, field test, and setup a Movable Bridge as specified herein. These specification govern both new construction projects and rehabi litation/ repair projects.
820.01.1 Structural Specifications: All specifications for bridges in other
sections that are applicable to the structure of a Movable Bridge shall apply, unless otherwise specified herein or shown on the plans.
820.01.2 Mechanical System Speci fications: See Section 821 for
Mechanical System specifications.
820.01.3 Electrical System Specifications: See Section 822 for
Electrical System specifications.
820.01.4 Operator’s House/Machinery House Specifications: See
Section 823 for Operator’s House/Machinery House specifications.
820.02 ACRONYMS AND ABBREVI ATIONS. See 101.02 , 801.02 , 821.02 ,
and 822.02 for acronyms and abbreviations.
820.03 DEFINITIONS. See 101.03 , 801.03 , 821.03 , and 822.03 for additional
definitions. Balance Blocks . Concrete blocks that can be added or removed from a counterweight to adjust the counterbalance of a movable span, usually weighing approximately 80 pounds. Bobtail Swing Span Bridge. A swing span bridge where the length of the movable span on the channel side of the pivot girder is longer than the opposite length. Balancing the span requires a counterweight. Movable Bridges
820.01 DESCRIPTION. Provide all material, equipment, tools, measuring
devices, and labor to purchase/fabricate, shop test, transport, install/erect, align/adjust, paint, lubricate, field test, and setup a Movable Bridge as specified herein. These specification govern both new construction projects and rehabi litation/ repair projects.
820.01.1 Structural Specifications: All specifications for bridges in other
sections that are applicable to the structure of a Movable Bridge shall apply, unless otherwise specified herein or shown on the plans.
820.01.2 Mechanical System Speci fications: See Section 821 for
Mechanical System specifications.
820.01.3 Electrical System Specifications: See Section 822 for
Electrical System specifications.
820.01.4 Operator’s House/Machinery House Specifications: See
Section 823 for Operator’s House/Machinery House specifications.
820.02 ACRONYMS AND ABBREVI ATIONS. See 101.02 , 801.02 , 821.02 ,
and 822.02 for acronyms and abbreviations.
820.03 DEFINITIONS. See 101.03 , 801.03 , 821.03 , and 822.03 for additional
definitions. Balance Blocks . Concrete blocks that can be added or removed from a counterweight to adjust the counterbalance of a movable span, usually weighing approximately 80 pounds. Bobtail Swing Span Bridge. A swing span bridge where the length of the movable span on the channel side of the pivot girder is longer than the opposite length. Balancing the span requires a counterweight. Movable Bridges
820.01 DESCRIPTION. Provide all material, equipment, tools, measuring
devices, and labor to purchase/fabricate, shop test, transport, install/erect, align/adjust, paint, lubricate, field test, and setup a Movable Bridge as specified herein. These specification govern both new construction projects and rehabi litation/ repair projects.
820.01.1 Structural Specifications: All specifications for bridges in other
sections that are applicable to the structure of a Movable Bridge shall apply, unless otherwise specified herein or shown on the plans.
820.01.2 Mechanical System Speci fications: See Section 821 for
Mechanical System specifications.
820.01.3 Electrical System Specifications: See Section 822 for
Electrical System specifications.
820.01.4 Operator’s House/Machinery House Specifications: See
Section 823 for Operator’s House/Machinery House specifications.
820.02 ACRONYMS AND ABBREVI ATIONS. See 101.02 , 801.02 , 821.02 ,
and 822.02 for acronyms and abbreviations.
820.03 DEFINITIONS. See 101.03 , 801.03 , 821.03 , and 822.03 for additional
definitions. Balance Blocks . Concrete blocks that can be added or removed from a counterweight to adjust the counterbalance of a movable span, usually weighing approximately 80 pounds. Bobtail Swing Span Bridge. A swing span bridge where the length of the movable span on the channel side of the pivot girder is longer than the opposite length. Balancing the span requires a counterweight. Movable Bridges
820.01 DESCRIPTION. Provide all material, equipment, tools, measuring
devices, and labor to purchase/fabricate, shop test, transport, install/erect, align/adjust, paint, lubricate, field test, and setup a Movable Bridge as specified herein. These specification govern both new construction projects and rehabi litation/ repair projects.
820.01.1 Structural Specifications: All specifications for bridges in other
sections that are applicable to the structure of a Movable Bridge shall apply, unless otherwise specified herein or shown on the plans.
820.01.2 Mechanical System Speci fications: See Section 821 for
Mechanical System specifications.
820.01.3 Electrical System Specifications: See Section 822 for
Electrical System specifications.
820.01.4 Operator’s House/Machinery House Specifications: See
Section 823 for Operator’s House/Machinery House specifications.
820.02 ACRONYMS AND ABBREVI ATIONS. See 101.02 , 801.02 , 821.02 ,
and 822.02 for acronyms and abbreviations.
820.03 DEFINITIONS. See 101.03 , 801.03 , 821.03 , and 822.03 for additional
definitions. Balance Blocks . Concrete blocks that can be added or removed from a counterweight to adjust the counterbalance of a movable span, usually weighing approximately 80 pounds. Bobtail Swing Span Bridge. A swing span bridge where the length of the movable span on the channel side of the pivot girder is longer than the opposite length. Balancing the span requires a counterweight. Counterweight . A large heavy concret e and/or steel structure used to counterbalance the weight of a movable span or a movable barrier. Equal Arm Swing Span Bridge. A swing span bridge where the length of the movable span on the channel side of the pivot girder is equal to the opposite leng th. Lift Tower . Towers on a vertical lift bridge that facilitate lifting of the movable span. Machinery Deck . Platform on top of a vertical lift bridge lift tower where the span drive machinery is located. Movable Barrier . A barrier that is lowered p erpendicular to the roadway to provide a physical barrier to vehicular traffic when a movable bridge is open to marine traffic. Movable Bridge . A bridge, usually crossing a navigable waterway that has a span that can be moved to open the waterway for mar ine navigation. Movable Bridge ( Bascule Span ). A movable bridge that has a cantilevered movable span which rotates vertically about a horizontal axis to allow marine navigation of the waterway with unlimited vertical clearance. Movable Bridge (Pontoon Span ). A movable bridge that has a floating movable span which rotates horizontally about a pivot point to allow marine navigation of the waterway with unlimited vertical clearance. The floating span becomes part of the fender system when the span is in t he open position. Movable Bridge ( Swing Span ). A movable bridge that has a cantilevered movable span which rotates horizontally about a vertical axis to allow marine navigation of the waterway with unlimited vertical clearance. Movable Bridge ( Vertical Lift Span ). A movable bridge that has a counterweighted movable span which lifts vertically between two towers to allow marine navigation of the waterway with limited vertical clearance. Movable Span . The span on a movable bridge that can move by means of permanently installed mechanical and electrical systems to allow marine navigation of the waterway. Pivot Girder . Girder on a swing span bridge that is located on the center pivot bearing and supports the entire weight of the movable span during operation. Sheave . Large pulley located on top the lift towers of a vertical lift bridge which support the counterweight, counterweight wire ropes, and the movable span. Sheaves facilitate counterbalancing and movement of the movable span. Sheave Trunn ion. Large axle on which a sheave rotates . Span Trunnion . Large axle on which a bascule span rotates. System Integrator . A designated representative of the contractor that has the knowledge, experience, responsibility, and authority to integrate the work of all engineering disciplines related to the project. Traffic Gate . A gate that is lowered perpendicular to the roadway to provide a visual warning to vehicular traffic when a movable bridge is open to marine traffic. Trunnion . Large axle on whic h any heavy movable structure or component rotates. (e.g. bascule span, sheave, counterweight, etc.) Trunnion Bearings . Large sleeve or roller bearings that facilitate rotation of a trunnion. Unequal Arm Swing Span Bridge. See “Bobtail Swing Span .”
820.04 Materials.
Structural Concrete 805.02 Reinforcing Steel 806.02 Structural Metals 807.02 Steel Grid Flooring 808.02 Bridge Railings, Hand Railings and Permanent Roadway Barriers 810.02 Painting and Protective Coatings 811.03 Treated Timber 812.02 Concrete Approach Slabs 813.02 Bearings 814.02 Joints 815.02 Drainage Systems 816.02 Mechanical Systems 821.04 Electrical Systems 822.04 Facilities 823.04 Portland Cement Concrete 901.02 Epoxy Resin Systems Section 1017 All material for fabricated items and all construction material for movable bridges shall be new.
820.05 General Requirements .
820.05.1 Federal, State, and Local Codes and Laws: Providing work in
accordan ce with Federal, State, and local codes, laws, ordinances, and codes listed in 821.05.1 is a minimum requirement. Work specified in the Contract that is more Trunnion . Large axle on whic h any heavy movable structure or component rotates. (e.g. bascule span, sheave, counterweight, etc.) Trunnion Bearings . Large sleeve or roller bearings that facilitate rotation of a trunnion. Unequal Arm Swing Span Bridge. See “Bobtail Swing Span .”
820.04 Materials.
Structural Concrete 805.02 Reinforcing Steel 806.02 Structural Metals 807.02 Steel Grid Flooring 808.02 Bridge Railings, Hand Railings and Permanent Roadway Barriers 810.02 Painting and Protective Coatings 811.03 Treated Timber 812.02 Concrete Approach Slabs 813.02 Bearings 814.02 Joints 815.02 Drainage Systems 816.02 Mechanical Systems 821.04 Electrical Systems 822.04 Facilities 823.04 Portland Cement Concrete 901.02 Epoxy Resin Systems Section 1017 All material for fabricated items and all construction material for movable bridges shall be new.
820.05 General Requirements .
820.05.1 Federal, State, and Local Codes and Laws: Providing work in
accordan ce with Federal, State, and local codes, laws, ordinances, and codes listed in 821.05.1 is a minimum requirement. Work specified in the Contract that is more Trunnion . Large axle on whic h any heavy movable structure or component rotates. (e.g. bascule span, sheave, counterweight, etc.) Trunnion Bearings . Large sleeve or roller bearings that facilitate rotation of a trunnion. Unequal Arm Swing Span Bridge. See “Bobtail Swing Span .”
820.04 Materials.
Structural Concrete 805.02 Reinforcing Steel 806.02 Structural Metals 807.02 Steel Grid Flooring 808.02 Bridge Railings, Hand Railings and Permanent Roadway Barriers 810.02 Painting and Protective Coatings 811.03 Treated Timber 812.02 Concrete Approach Slabs 813.02 Bearings 814.02 Joints 815.02 Drainage Systems 816.02 Mechanical Systems 821.04 Electrical Systems 822.04 Facilities 823.04 Portland Cement Concrete 901.02 Epoxy Resin Systems Section 1017 All material for fabricated items and all construction material for movable bridges shall be new.
820.05 General Requirements .
820.05.1 Federal, State, and Local Codes and Laws: Providing work in
accordan ce with Federal, State, and local codes, laws, ordinances, and codes listed in 821.05.1 is a minimum requirement. Work specified in the Contract that is more Trunnion . Large axle on whic h any heavy movable structure or component rotates. (e.g. bascule span, sheave, counterweight, etc.) Trunnion Bearings . Large sleeve or roller bearings that facilitate rotation of a trunnion. Unequal Arm Swing Span Bridge. See “Bobtail Swing Span .”
820.04 Materials.
Structural Concrete 805.02 Reinforcing Steel 806.02 Structural Metals 807.02 Steel Grid Flooring 808.02 Bridge Railings, Hand Railings and Permanent Roadway Barriers 810.02 Painting and Protective Coatings 811.03 Treated Timber 812.02 Concrete Approach Slabs 813.02 Bearings 814.02 Joints 815.02 Drainage Systems 816.02 Mechanical Systems 821.04 Electrical Systems 822.04 Facilities 823.04 Portland Cement Concrete 901.02 Epoxy Resin Systems Section 1017 All material for fabricated items and all construction material for movable bridges shall be new.
820.05 General Requirements .
820.05.1 Federal, State, and Local Codes and Laws: Providing work in
accordan ce with Federal, State, and local codes, laws, ordinances, and codes listed in 821.05.1 is a minimum requirement. Work specified in the Contract that is more stringent than that required by the Federal, State, and local codes, laws, and ordinances shall also be provided. Work that does not meet the requirements of the Federal , State, and local codes, laws, and ordinances, and/or the Contract documents shall be corrected at no additional cost or time to the Department.
820.05.2 Specifications and Standards: Comply with 821.05.2 unless
otherwise specified.
820.05.3 Workmanship: Unless otherwise directed, use best industry
practices at all times during th e fabrication, transportation, erection, installation, alignment, adjustment, and testing of the movable bridge structure and performance of all related work.
820.05.4 Personnel: Provide construction personnel who are
knowledgeable and experienced in the constr uction of movable bridges or other similar heavy movable structures. Although the plans are of sufficient detail and quality to convey the intent of the design to an experienced contractor, they do not necessarily depict every detail or specify every incid ental or ancillary item required for the movable bridge to be properly fabricated, transported, erected, aligned, adjusted, tested, painted, and to function in accordance with the intent of the Contract. Provide a “System Integrator” to perform the followi ng:
1.Point of Contact: Act as the point of contact between the Department, the contractor, and the subcontractors, for all construction issues and issues related to the review of submittals.
2.Contract Compliance of Submittals : Review and manage submittals from the various subcontractors to insure they comply with the Contract prior to forwarding to the Bridge Engineer for review.
3.Submittal Corrections: Review submittals that were returned for correction to verify that all comments were addressed prior to r eturning submittals to the Bridge Engineer for review.
4.Coordination of Work: Coordinate the work of the various subcontractors to assure that one subcontractor’s work does not delay or conflict with the work of another subcontractor, and ensure that all w ork proposed by one subcontractor will integrate correctly with the work from another subcontractor.
5.Dispute Mediation: Mediate and quickly resolve disputes between subcontractors to prevent construction delays.
6.Final Setup and Testing: Oversee final setup and testing of the movable span. Submit testing procedures for review. Verify all mechanical and electrical equipment are installed and adjusted correctly, and the movable span is performing properly before requesting a final inspecti on of the span by the Bridge Engineer. stringent than that required by the Federal, State, and local codes, laws, and ordinances shall also be provided. Work that does not meet the requirements of the Federal , State, and local codes, laws, and ordinances, and/or the Contract documents shall be corrected at no additional cost or time to the Department.
820.05.2 Specifications and Standards: Comply with 821.05.2 unless
otherwise specified.
820.05.3 Workmanship: Unless otherwise directed, use best industry
practices at all times during th e fabrication, transportation, erection, installation, alignment, adjustment, and testing of the movable bridge structure and performance of all related work.
820.05.4 Personnel: Provide construction personnel who are
knowledgeable and experienced in the constr uction of movable bridges or other similar heavy movable structures. Although the plans are of sufficient detail and quality to convey the intent of the design to an experienced contractor, they do not necessarily depict every detail or specify every incid ental or ancillary item required for the movable bridge to be properly fabricated, transported, erected, aligned, adjusted, tested, painted, and to function in accordance with the intent of the Contract. Provide a “System Integrator” to perform the followi ng:
1.Point of Contact: Act as the point of contact between the Department, the contractor, and the subcontractors, for all construction issues and issues related to the review of submittals.
2.Contract Compliance of Submittals : Review and manage submittals from the various subcontractors to insure they comply with the Contract prior to forwarding to the Bridge Engineer for review.
3.Submittal Corrections: Review submittals that were returned for correction to verify that all comments were addressed prior to r eturning submittals to the Bridge Engineer for review.
4.Coordination of Work: Coordinate the work of the various subcontractors to assure that one subcontractor’s work does not delay or conflict with the work of another subcontractor, and ensure that all w ork proposed by one subcontractor will integrate correctly with the work from another subcontractor.
5.Dispute Mediation: Mediate and quickly resolve disputes between subcontractors to prevent construction delays.
6.Final Setup and Testing: Oversee final setup and testing of the movable span. Submit testing procedures for review. Verify all mechanical and electrical equipment are installed and adjusted correctly, and the movable span is performing properly before requesting a final inspecti on of the span by the Bridge Engineer. stringent than that required by the Federal, State, and local codes, laws, and ordinances shall also be provided. Work that does not meet the requirements of the Federal , State, and local codes, laws, and ordinances, and/or the Contract documents shall be corrected at no additional cost or time to the Department.
820.05.2 Specifications and Standards: Comply with 821.05.2 unless
otherwise specified.
820.05.3 Workmanship: Unless otherwise directed, use best industry
practices at all times during th e fabrication, transportation, erection, installation, alignment, adjustment, and testing of the movable bridge structure and performance of all related work.
820.05.4 Personnel: Provide construction personnel who are
knowledgeable and experienced in the constr uction of movable bridges or other similar heavy movable structures. Although the plans are of sufficient detail and quality to convey the intent of the design to an experienced contractor, they do not necessarily depict every detail or specify every incid ental or ancillary item required for the movable bridge to be properly fabricated, transported, erected, aligned, adjusted, tested, painted, and to function in accordance with the intent of the Contract. Provide a “System Integrator” to perform the followi ng:
1.Point of Contact: Act as the point of contact between the Department, the contractor, and the subcontractors, for all construction issues and issues related to the review of submittals.
2.Contract Compliance of Submittals : Review and manage submittals from the various subcontractors to insure they comply with the Contract prior to forwarding to the Bridge Engineer for review.
3.Submittal Corrections: Review submittals that were returned for correction to verify that all comments were addressed prior to r eturning submittals to the Bridge Engineer for review.
4.Coordination of Work: Coordinate the work of the various subcontractors to assure that one subcontractor’s work does not delay or conflict with the work of another subcontractor, and ensure that all w ork proposed by one subcontractor will integrate correctly with the work from another subcontractor.
5.Dispute Mediation: Mediate and quickly resolve disputes between subcontractors to prevent construction delays.
6.Final Setup and Testing: Oversee final setup and testing of the movable span. Submit testing procedures for review. Verify all mechanical and electrical equipment are installed and adjusted correctly, and the movable span is performing properly before requesting a final inspecti on of the span by the Bridge Engineer. stringent than that required by the Federal, State, and local codes, laws, and ordinances shall also be provided. Work that does not meet the requirements of the Federal , State, and local codes, laws, and ordinances, and/or the Contract documents shall be corrected at no additional cost or time to the Department.
820.05.2 Specifications and Standards: Comply with 821.05.2 unless
otherwise specified.
820.05.3 Workmanship: Unless otherwise directed, use best industry
practices at all times during th e fabrication, transportation, erection, installation, alignment, adjustment, and testing of the movable bridge structure and performance of all related work.
820.05.4 Personnel: Provide construction personnel who are
knowledgeable and experienced in the constr uction of movable bridges or other similar heavy movable structures. Although the plans are of sufficient detail and quality to convey the intent of the design to an experienced contractor, they do not necessarily depict every detail or specify every incid ental or ancillary item required for the movable bridge to be properly fabricated, transported, erected, aligned, adjusted, tested, painted, and to function in accordance with the intent of the Contract. Provide a “System Integrator” to perform the followi ng:
1.Point of Contact: Act as the point of contact between the Department, the contractor, and the subcontractors, for all construction issues and issues related to the review of submittals.
2.Contract Compliance of Submittals : Review and manage submittals from the various subcontractors to insure they comply with the Contract prior to forwarding to the Bridge Engineer for review.
3.Submittal Corrections: Review submittals that were returned for correction to verify that all comments were addressed prior to r eturning submittals to the Bridge Engineer for review.
4.Coordination of Work: Coordinate the work of the various subcontractors to assure that one subcontractor’s work does not delay or conflict with the work of another subcontractor, and ensure that all w ork proposed by one subcontractor will integrate correctly with the work from another subcontractor.
5.Dispute Mediation: Mediate and quickly resolve disputes between subcontractors to prevent construction delays.
6.Final Setup and Testing: Oversee final setup and testing of the movable span. Submit testing procedures for review. Verify all mechanical and electrical equipment are installed and adjusted correctly, and the movable span is performing properly before requesting a final inspecti on of the span by the Bridge Engineer.
820.06 Movable Bridge Submi Ttals.
Movable Bridge submittals shall comply with Section 105.02.2 , 801.05 , 821.06 , and 822.06 . They include shop drawings, cut sheets, field measurements, calculations, manuals, and any other document that the contractor is required by the Contr act to produce and submit to the Bridge Engineer for review or record. The purchase or fabrication of any item prior to the completion of the submittal process is at the contractor’s risk. Said items that are later determined to be unacceptable for use on the project, will be rejected by the Department at the contractor’s expense, even if the items purchased or fabricated are identical to that shown on the contract documents (plan error). Always copy the Project Engineer whenever transmitting submittals.
820.06.1 Lubrication and Equipment Setting Drawings: Prepare and
submit lubrication and equipment setting drawings to the Bridge Engineer for review. Lubrication and equipment setting drawings shall show the layout of all mechanical and electrical items on the br idge structure. Identify each lubrication point with an arrow and list lubricant type and frequency of lubrication. Lubrication of manufactured items shall be based on the manufacturer's recommendations. Point to, and identify, mechanical and electrical it ems with pertinent set points, and list the set point values (e.g. Relief Valve, 1,500 psi). These sheets should not be prepared until the final setup of the bridge has been completed.
1.Submittal Procedure: Submit lubrication and equipment setting drawings electronically to the Bridge Engineer for review. The electronic file shall be a single PDF file. For bidding purposes, allow a review period of 14 calendar days.
2.After review, rejected drawings will be stamped “Returned for Correction,” will be initialed and dated by the reviewer, will have comments marked in red, and will be returned to the contractor electronically as a PDF file. Correct errors and resubmit elect ronically to the Bridge Engineer for review. This process will repeat until the Department has no comments. Lubrication and equipment setting drawings will then be stamped “Accepted in accordance with LSSRB 105.02 ,” initialed and dated by the reviewer, and returned to the Contractor electronically as a PDF file.
3.Deliverables: Provide to the Bridge Engineer for distribution, one full scale paper reproduction of all lubrication and equipment setting drawings that have been stamped “Accepted in accordance with LSSRB 105.02 .” Print paper reproductions directly from the PDF file returned by the Department, and show the “Accepted in accordance with LSSRB 105.02 ” dated and initialed by the reviewer with no modifications, and laminate (10 mil min.).
820.06 Movable Bridge Submi Ttals.
Movable Bridge submittals shall comply with Section 105.02.2 , 801.05 , 821.06 , and 822.06 . They include shop drawings, cut sheets, field measurements, calculations, manuals, and any other document that the contractor is required by the Contr act to produce and submit to the Bridge Engineer for review or record. The purchase or fabrication of any item prior to the completion of the submittal process is at the contractor’s risk. Said items that are later determined to be unacceptable for use on the project, will be rejected by the Department at the contractor’s expense, even if the items purchased or fabricated are identical to that shown on the contract documents (plan error). Always copy the Project Engineer whenever transmitting submittals.
820.06.1 Lubrication and Equipment Setting Drawings: Prepare and
submit lubrication and equipment setting drawings to the Bridge Engineer for review. Lubrication and equipment setting drawings shall show the layout of all mechanical and electrical items on the br idge structure. Identify each lubrication point with an arrow and list lubricant type and frequency of lubrication. Lubrication of manufactured items shall be based on the manufacturer's recommendations. Point to, and identify, mechanical and electrical it ems with pertinent set points, and list the set point values (e.g. Relief Valve, 1,500 psi). These sheets should not be prepared until the final setup of the bridge has been completed.
1.Submittal Procedure: Submit lubrication and equipment setting drawings electronically to the Bridge Engineer for review. The electronic file shall be a single PDF file. For bidding purposes, allow a review period of 14 calendar days.
2.After review, rejected drawings will be stamped “Returned for Correction,” will be initialed and dated by the reviewer, will have comments marked in red, and will be returned to the contractor electronically as a PDF file. Correct errors and resubmit elect ronically to the Bridge Engineer for review. This process will repeat until the Department has no comments. Lubrication and equipment setting drawings will then be stamped “Accepted in accordance with LSSRB 105.02 ,” initialed and dated by the reviewer, and returned to the Contractor electronically as a PDF file.
3.Deliverables: Provide to the Bridge Engineer for distribution, one full scale paper reproduction of all lubrication and equipment setting drawings that have been stamped “Accepted in accordance with LSSRB 105.02 .” Print paper reproductions directly from the PDF file returned by the Department, and show the “Accepted in accordance with LSSRB 105.02 ” dated and initialed by the reviewer with no modifications, and laminate (10 mil min.).
820.06 Movable Bridge Submi Ttals.
Movable Bridge submittals shall comply with Section 105.02.2 , 801.05 , 821.06 , and 822.06 . They include shop drawings, cut sheets, field measurements, calculations, manuals, and any other document that the contractor is required by the Contr act to produce and submit to the Bridge Engineer for review or record. The purchase or fabrication of any item prior to the completion of the submittal process is at the contractor’s risk. Said items that are later determined to be unacceptable for use on the project, will be rejected by the Department at the contractor’s expense, even if the items purchased or fabricated are identical to that shown on the contract documents (plan error). Always copy the Project Engineer whenever transmitting submittals.
820.06.1 Lubrication and Equipment Setting Drawings: Prepare and
submit lubrication and equipment setting drawings to the Bridge Engineer for review. Lubrication and equipment setting drawings shall show the layout of all mechanical and electrical items on the br idge structure. Identify each lubrication point with an arrow and list lubricant type and frequency of lubrication. Lubrication of manufactured items shall be based on the manufacturer's recommendations. Point to, and identify, mechanical and electrical it ems with pertinent set points, and list the set point values (e.g. Relief Valve, 1,500 psi). These sheets should not be prepared until the final setup of the bridge has been completed.
1.Submittal Procedure: Submit lubrication and equipment setting drawings electronically to the Bridge Engineer for review. The electronic file shall be a single PDF file. For bidding purposes, allow a review period of 14 calendar days.
2.After review, rejected drawings will be stamped “Returned for Correction,” will be initialed and dated by the reviewer, will have comments marked in red, and will be returned to the contractor electronically as a PDF file. Correct errors and resubmit elect ronically to the Bridge Engineer for review. This process will repeat until the Department has no comments. Lubrication and equipment setting drawings will then be stamped “Accepted in accordance with LSSRB 105.02 ,” initialed and dated by the reviewer, and returned to the Contractor electronically as a PDF file.
3.Deliverables: Provide to the Bridge Engineer for distribution, one full scale paper reproduction of all lubrication and equipment setting drawings that have been stamped “Accepted in accordance with LSSRB 105.02 .” Print paper reproductions directly from the PDF file returned by the Department, and show the “Accepted in accordance with LSSRB 105.02 ” dated and initialed by the reviewer with no modifications, and laminate (10 mil min.).
4.Provide a 24 inch x 36 inch aluminum, outdoor, weatherproof poster frame with clear polycarbonate plastic cover for each 22 inch x 34 inch drawing. Submit frame to the Bridge Engineer for review. Hang framed drawings in the machinery room where indicated on the plans.
820.06.2 Manuals: For all movable bridge projects, prepare and submit the
following manuals. Cost of preparing and submitting the manuals shall be included in th e pay items of Sections of 821, 822, and 823. The Department will withhold 5 percent of the bid price of all mechanical, electrical, and facility items (821, 822, and 823 items) until all manuals have been reviewed and accepted, and final paper reproductio ns have been received by the Department.
1.Bridge Operation Manual: Prepare and submit a Bridge Operation Manual to the Bridge Engineer for review. This manual is a reference for the Bridge Operator, and it shall include a written description of span operat ion under normal conditions, a written description of span operation under all possible fault conditions, and a troubleshooting guide. The Engineer of Record will supply the information in this manual to the contractor as a single PDF file. Print and provi de two paper reproductions of the Bridge Operation Manual to the Bridge Engineer for review. For bidding purposes, allow a review period of 21 calendar days. Format shall be in accordance with “Paper Reproductions” and “Letter Size Sheets” from 801.05.2.2 except that sheets will not show an “Accepted in accordance with LSSRB 105.02 ” stamp. Provide each manual with a white, premium, heavy duty, 3 D-ring binder with title sleeve. Binders shall be appropriately sized to hold enclosed material, and shall be extra wide to accommodate sheet protectors. Binders shall not be larger than 3 inches. Use multiple binders if necessary. Provide each sheet wit h a top loading, 8 ½ inch x 11 inch, standard weight, clear, sheet protector. Fold half -scale plan sheets in half with printed material facing out, and insert in sheet protectors. Provide a top loading, 8 ½ inch x 11 inch, standard weight, clear, tab index sheet protector with labeled tab to delineate sections.
4.Provide a 24 inch x 36 inch aluminum, outdoor, weatherproof poster frame with clear polycarbonate plastic cover for each 22 inch x 34 inch drawing. Submit frame to the Bridge Engineer for review. Hang framed drawings in the machinery room where indicated on the plans.
820.06.2 Manuals: For all movable bridge projects, prepare and submit the
following manuals. Cost of preparing and submitting the manuals shall be included in th e pay items of Sections of 821, 822, and 823. The Department will withhold 5 percent of the bid price of all mechanical, electrical, and facility items (821, 822, and 823 items) until all manuals have been reviewed and accepted, and final paper reproductio ns have been received by the Department.
1.Bridge Operation Manual: Prepare and submit a Bridge Operation Manual to the Bridge Engineer for review. This manual is a reference for the Bridge Operator, and it shall include a written description of span operat ion under normal conditions, a written description of span operation under all possible fault conditions, and a troubleshooting guide. The Engineer of Record will supply the information in this manual to the contractor as a single PDF file. Print and provi de two paper reproductions of the Bridge Operation Manual to the Bridge Engineer for review. For bidding purposes, allow a review period of 21 calendar days. Format shall be in accordance with “Paper Reproductions” and “Letter Size Sheets” from 801.05.2.2 except that sheets will not show an “Accepted in accordance with LSSRB 105.02 ” stamp. Provide each manual with a white, premium, heavy duty, 3 D-ring binder with title sleeve. Binders shall be appropriately sized to hold enclosed material, and shall be extra wide to accommodate sheet protectors. Binders shall not be larger than 3 inches. Use multiple binders if necessary. Provide each sheet wit h a top loading, 8 ½ inch x 11 inch, standard weight, clear, sheet protector. Fold half -scale plan sheets in half with printed material facing out, and insert in sheet protectors. Provide a top loading, 8 ½ inch x 11 inch, standard weight, clear, tab index sheet protector with labeled tab to delineate sections. If the paper reproductions of the Bridge Operation Manual are rejected after review, the title sheet of both copies will be stamped “Returned for Correction,” and both copies will be returned to the contractor with instructions for corrections. Correct errors and resubmit to the Bridge Engineer for review. This process will repeat until the Department has no comments. The title sheet will then be stamped “Accepted in accordance with LSSRB 105.02 ,” initialed and dated by the reviewer, and distributed by the Department.
2.Mechanical Operation and Maintenance Manual: See Section 821 for the Mechanical Operation and Maintenance Manual requirements.
3.Electrical Operation and Maintenance Manual: See Section 822 for the Electrical Operation and Maintenance Manual requirements.
820.07 Construction Require Ments.
820.07.1 Position of Movable Span during Construction: For new
construction, the movable span(s) may be erected in the “open to navigation” or “closed to navigation” positions as allowed by the plans and the Project Engineer. At all times, construction must comply with the United States Coast Guard (USCG) permit or negotiated agreement with the USCG. Maintain marine and vehicular traffic requirem ents and closures as specified in the plans.
820.07.2 Survey of Structural Elements: Perform all survey
measurements of structural bridge elements that may be affected by temperature and sunlight in the early morning prior to development of a temperature differential in the structure.
820.07.3 Shop Assembly of Structural Steel: Shop assemble the
structural steel for all movable spans in accordance with 807.04.10 and mark for reassembly in accordance with 807.04.24 .
820.07.4 Construction Sequence: Adhere to construction sequencing
specified herein unless otherwise specified on the plans. Any deviation from the construction sequencing must be submitted to the Bridge Engineer for review.
820.07.5 Concrete Test Blocks: Provide test blocks to determine the
exact density (weight) of the concrete individually for the movable span deck (if applicable), the counterweight, and the balance blocks. All concrete shall be Class A unless otherwise noted on the plans. Cast test blocks early enough in the construction period such that the test data will be available when it is time for the contractor to perform counterweight calculations. If the paper reproductions of the Bridge Operation Manual are rejected after review, the title sheet of both copies will be stamped “Returned for Correction,” and both copies will be returned to the contractor with instructions for corrections. Correct errors and resubmit to the Bridge Engineer for review. This process will repeat until the Department has no comments. The title sheet will then be stamped “Accepted in accordance with LSSRB 105.02 ,” initialed and dated by the reviewer, and distributed by the Department.
2.Mechanical Operation and Maintenance Manual: See Section 821 for the Mechanical Operation and Maintenance Manual requirements.
3.Electrical Operation and Maintenance Manual: See Section 822 for the Electrical Operation and Maintenance Manual requirements.
820.07 Construction Require Ments.
820.07.1 Position of Movable Span during Construction: For new
construction, the movable span(s) may be erected in the “open to navigation” or “closed to navigation” positions as allowed by the plans and the Project Engineer. At all times, construction must comply with the United States Coast Guard (USCG) permit or negotiated agreement with the USCG. Maintain marine and vehicular traffic requirem ents and closures as specified in the plans.
820.07.2 Survey of Structural Elements: Perform all survey
measurements of structural bridge elements that may be affected by temperature and sunlight in the early morning prior to development of a temperature differential in the structure.
820.07.3 Shop Assembly of Structural Steel: Shop assemble the
structural steel for all movable spans in accordance with 807.04.10 and mark for reassembly in accordance with 807.04.24 .
820.07.4 Construction Sequence: Adhere to construction sequencing
specified herein unless otherwise specified on the plans. Any deviation from the construction sequencing must be submitted to the Bridge Engineer for review.
820.07.5 Concrete Test Blocks: Provide test blocks to determine the
exact density (weight) of the concrete individually for the movable span deck (if applicable), the counterweight, and the balance blocks. All concrete shall be Class A unless otherwise noted on the plans. Cast test blocks early enough in the construction period such that the test data will be available when it is time for the contractor to perform counterweight calculations. If the paper reproductions of the Bridge Operation Manual are rejected after review, the title sheet of both copies will be stamped “Returned for Correction,” and both copies will be returned to the contractor with instructions for corrections. Correct errors and resubmit to the Bridge Engineer for review. This process will repeat until the Department has no comments. The title sheet will then be stamped “Accepted in accordance with LSSRB 105.02 ,” initialed and dated by the reviewer, and distributed by the Department.
2.Mechanical Operation and Maintenance Manual: See Section 821 for the Mechanical Operation and Maintenance Manual requirements.
3.Electrical Operation and Maintenance Manual: See Section 822 for the Electrical Operation and Maintenance Manual requirements.
820.07 Construction Require Ments.
820.07.1 Position of Movable Span during Construction: For new
construction, the movable span(s) may be erected in the “open to navigation” or “closed to navigation” positions as allowed by the plans and the Project Engineer. At all times, construction must comply with the United States Coast Guard (USCG) permit or negotiated agreement with the USCG. Maintain marine and vehicular traffic requirem ents and closures as specified in the plans.
820.07.2 Survey of Structural Elements: Perform all survey
measurements of structural bridge elements that may be affected by temperature and sunlight in the early morning prior to development of a temperature differential in the structure.
820.07.3 Shop Assembly of Structural Steel: Shop assemble the
structural steel for all movable spans in accordance with 807.04.10 and mark for reassembly in accordance with 807.04.24 .
820.07.4 Construction Sequence: Adhere to construction sequencing
specified herein unless otherwise specified on the plans. Any deviation from the construction sequencing must be submitted to the Bridge Engineer for review.
820.07.5 Concrete Test Blocks: Provide test blocks to determine the
exact density (weight) of the concrete individually for the movable span deck (if applicable), the counterweight, and the balance blocks. All concrete shall be Class A unless otherwise noted on the plans. Cast test blocks early enough in the construction period such that the test data will be available when it is time for the contractor to perform counterweight calculations. If the paper reproductions of the Bridge Operation Manual are rejected after review, the title sheet of both copies will be stamped “Returned for Correction,” and both copies will be returned to the contractor with instructions for corrections. Correct errors and resubmit to the Bridge Engineer for review. This process will repeat until the Department has no comments. The title sheet will then be stamped “Accepted in accordance with LSSRB 105.02 ,” initialed and dated by the reviewer, and distributed by the Department.
2.Mechanical Operation and Maintenance Manual: See Section 821 for the Mechanical Operation and Maintenance Manual requirements.
3.Electrical Operation and Maintenance Manual: See Section 822 for the Electrical Operation and Maintenance Manual requirements.
820.07 Construction Require Ments.
820.07.1 Position of Movable Span during Construction: For new
construction, the movable span(s) may be erected in the “open to navigation” or “closed to navigation” positions as allowed by the plans and the Project Engineer. At all times, construction must comply with the United States Coast Guard (USCG) permit or negotiated agreement with the USCG. Maintain marine and vehicular traffic requirem ents and closures as specified in the plans.
820.07.2 Survey of Structural Elements: Perform all survey
measurements of structural bridge elements that may be affected by temperature and sunlight in the early morning prior to development of a temperature differential in the structure.
820.07.3 Shop Assembly of Structural Steel: Shop assemble the
structural steel for all movable spans in accordance with 807.04.10 and mark for reassembly in accordance with 807.04.24 .
820.07.4 Construction Sequence: Adhere to construction sequencing
specified herein unless otherwise specified on the plans. Any deviation from the construction sequencing must be submitted to the Bridge Engineer for review.
820.07.5 Concrete Test Blocks: Provide test blocks to determine the
exact density (weight) of the concrete individually for the movable span deck (if applicable), the counterweight, and the balance blocks. All concrete shall be Class A unless otherwise noted on the plans. Cast test blocks early enough in the construction period such that the test data will be available when it is time for the contractor to perform counterweight calculations. If the paper reproductions of the Bridge Operation Manual are rejected after review, the title sheet of both copies will be stamped “Returned for Correction,” and both copies will be returned to the contractor with instructions for corrections. Correct errors and resubmit to the Bridge Engineer for review. This process will repeat until the Department has no comments. The title sheet will then be stamped “Accepted in accordance with LSSRB 105.02 ,” initialed and dated by the reviewer, and distributed by the Department.
2.Mechanical Operation and Maintenance Manual: See Section 821 for the Mechanical Operation and Maintenance Manual requirements.
3.Electrical Operation and Maintenance Manual: See Section 822 for the Electrical Operation and Maintenance Manual requirements.
820.07 Construction Require Ments.
820.07.1 Position of Movable Span during Construction: For new
construction, the movable span(s) may be erected in the “open to navigation” or “closed to navigation” positions as allowed by the plans and the Project Engineer. At all times, construction must comply with the United States Coast Guard (USCG) permit or negotiated agreement with the USCG. Maintain marine and vehicular traffic requirem ents and closures as specified in the plans.
820.07.2 Survey of Structural Elements: Perform all survey
measurements of structural bridge elements that may be affected by temperature and sunlight in the early morning prior to development of a temperature differential in the structure.
820.07.3 Shop Assembly of Structural Steel: Shop assemble the
structural steel for all movable spans in accordance with 807.04.10 and mark for reassembly in accordance with 807.04.24 .
820.07.4 Construction Sequence: Adhere to construction sequencing
specified herein unless otherwise specified on the plans. Any deviation from the construction sequencing must be submitted to the Bridge Engineer for review.
820.07.5 Concrete Test Blocks: Provide test blocks to determine the
exact density (weight) of the concrete individually for the movable span deck (if applicable), the counterweight, and the balance blocks. All concrete shall be Class A unless otherwise noted on the plans. Cast test blocks early enough in the construction period such that the test data will be available when it is time for the contractor to perform counterweight calculations. If the paper reproductions of the Bridge Operation Manual are rejected after review, the title sheet of both copies will be stamped “Returned for Correction,” and both copies will be returned to the contractor with instructions for corrections. Correct errors and resubmit to the Bridge Engineer for review. This process will repeat until the Department has no comments. The title sheet will then be stamped “Accepted in accordance with LSSRB 105.02 ,” initialed and dated by the reviewer, and distributed by the Department.
2.Mechanical Operation and Maintenance Manual: See Section 821 for the Mechanical Operation and Maintenance Manual requirements.
3.Electrical Operation and Maintenance Manual: See Section 822 for the Electrical Operation and Maintenance Manual requirements.
820.07 Construction Require Ments.
820.07.1 Position of Movable Span during Construction: For new
construction, the movable span(s) may be erected in the “open to navigation” or “closed to navigation” positions as allowed by the plans and the Project Engineer. At all times, construction must comply with the United States Coast Guard (USCG) permit or negotiated agreement with the USCG. Maintain marine and vehicular traffic requirem ents and closures as specified in the plans.
820.07.2 Survey of Structural Elements: Perform all survey
measurements of structural bridge elements that may be affected by temperature and sunlight in the early morning prior to development of a temperature differential in the structure.
820.07.3 Shop Assembly of Structural Steel: Shop assemble the
structural steel for all movable spans in accordance with 807.04.10 and mark for reassembly in accordance with 807.04.24 .
820.07.4 Construction Sequence: Adhere to construction sequencing
specified herein unless otherwise specified on the plans. Any deviation from the construction sequencing must be submitted to the Bridge Engineer for review.
820.07.5 Concrete Test Blocks: Provide test blocks to determine the
exact density (weight) of the concrete individually for the movable span deck (if applicable), the counterweight, and the balance blocks. All concrete shall be Class A unless otherwise noted on the plans. Cast test blocks early enough in the construction period such that the test data will be available when it is time for the contractor to perform counterweight calculations. If the paper reproductions of the Bridge Operation Manual are rejected after review, the title sheet of both copies will be stamped “Returned for Correction,” and both copies will be returned to the contractor with instructions for corrections. Correct errors and resubmit to the Bridge Engineer for review. This process will repeat until the Department has no comments. The title sheet will then be stamped “Accepted in accordance with LSSRB 105.02 ,” initialed and dated by the reviewer, and distributed by the Department.
2.Mechanical Operation and Maintenance Manual: See Section 821 for the Mechanical Operation and Maintenance Manual requirements.
3.Electrical Operation and Maintenance Manual: See Section 822 for the Electrical Operation and Maintenance Manual requirements.
820.07 Construction Require Ments.
820.07.1 Position of Movable Span during Construction: For new
construction, the movable span(s) may be erected in the “open to navigation” or “closed to navigation” positions as allowed by the plans and the Project Engineer. At all times, construction must comply with the United States Coast Guard (USCG) permit or negotiated agreement with the USCG. Maintain marine and vehicular traffic requirem ents and closures as specified in the plans.
820.07.2 Survey of Structural Elements: Perform all survey
measurements of structural bridge elements that may be affected by temperature and sunlight in the early morning prior to development of a temperature differential in the structure.
820.07.3 Shop Assembly of Structural Steel: Shop assemble the
structural steel for all movable spans in accordance with 807.04.10 and mark for reassembly in accordance with 807.04.24 .
820.07.4 Construction Sequence: Adhere to construction sequencing
specified herein unless otherwise specified on the plans. Any deviation from the construction sequencing must be submitted to the Bridge Engineer for review.
820.07.5 Concrete Test Blocks: Provide test blocks to determine the
exact density (weight) of the concrete individually for the movable span deck (if applicable), the counterweight, and the balance blocks. All concrete shall be Class A unless otherwise noted on the plans. Cast test blocks early enough in the construction period such that the test data will be available when it is time for the contractor to perform counterweight calculations. Casting and weighing test blocks must be per formed in the presence of the Project Engineer. Notify the Project Engineer at least three working days in advance. Test blocks shall be of known volume, and shall contain at least one cubic foot (0.03 cu
m.of concrete. For each concrete mixture, cast thr ee test blocks. Record the exact concrete mixture used, and the weight of the test blocks the day they were cast. Continue to record the weight of each test block every day for at least seven days. If the weights are still changing after seven days, contin ue to record weights each day until the weights stabilize. Use the average weight of each set of three test blocks for the counterweight calculations. For the movable span deck, select the mixture to be used and record the density for future use in the cou nterweight calculations. Balance blocks have been standardized and shall weigh 80 - 85 pounds each, with a concrete unit weight of approximately 145 pounds per cubic foot. Continue to make test blocks until a mixture with this density is achieved. Record m ixture for future use in casting balance blocks. For the counterweight, concrete density shall not exceed 180 pounds per cubic foot. Record mixtures with several known densities for possible use in the counterweight.
820.07.6 Construction of Counterweight:
1.Counterw eight Calculations and Shop Drawings: Counterweight dimensions shown on the plans are estimates based on an estimated design weight of the movable span and an estimated concrete density for both the counterweight and the movable span deck. Prior to beginn ing construction of the counterweights, prepare and submit to the Bridge Engineer for review calculations and shop drawings that show the proposed construction of the counterweight and the proposed concrete density to be used. Calculations shall be based o n the submitted shop drawings for the movable span structural steel, grid deck, concrete deck (including actual concrete density from test blocks), concrete reinforcing steel, barrier rails, sidewalks, counterweight wire ropes, balance chains, mechanical e quipment, electrical equipment, nuts, bolts, washers, and any other appurtenances that are part of the movable span. Calculations shall show the center of gravity of the movable span and the counterweight if needed. Casting and weighing test blocks must be per formed in the presence of the Project Engineer. Notify the Project Engineer at least three working days in advance. Test blocks shall be of known volume, and shall contain at least one cubic foot (0.03 cu
m.of concrete. For each concrete mixture, cast thr ee test blocks. Record the exact concrete mixture used, and the weight of the test blocks the day they were cast. Continue to record the weight of each test block every day for at least seven days. If the weights are still changing after seven days, contin ue to record weights each day until the weights stabilize. Use the average weight of each set of three test blocks for the counterweight calculations. For the movable span deck, select the mixture to be used and record the density for future use in the cou nterweight calculations. Balance blocks have been standardized and shall weigh 80 - 85 pounds each, with a concrete unit weight of approximately 145 pounds per cubic foot. Continue to make test blocks until a mixture with this density is achieved. Record m ixture for future use in casting balance blocks. For the counterweight, concrete density shall not exceed 180 pounds per cubic foot. Record mixtures with several known densities for possible use in the counterweight.
820.07.6 Construction of Counterweight:
1.Counterw eight Calculations and Shop Drawings: Counterweight dimensions shown on the plans are estimates based on an estimated design weight of the movable span and an estimated concrete density for both the counterweight and the movable span deck. Prior to beginn ing construction of the counterweights, prepare and submit to the Bridge Engineer for review calculations and shop drawings that show the proposed construction of the counterweight and the proposed concrete density to be used. Calculations shall be based o n the submitted shop drawings for the movable span structural steel, grid deck, concrete deck (including actual concrete density from test blocks), concrete reinforcing steel, barrier rails, sidewalks, counterweight wire ropes, balance chains, mechanical e quipment, electrical equipment, nuts, bolts, washers, and any other appurtenances that are part of the movable span. Calculations shall show the center of gravity of the movable span and the counterweight if needed. Maintain the method of construction show n on the plans and plan dimensions. In the event that the counterweight must be resized, shape and construction of counterweight shall be as similar to the plans as practical. If needed, add plate steel or steel billets to the counterweight to increase wei ght with approval of the Bridge Engineer. If used, they shall be uniformly distributed throughout the counterweight, individually supported within the counterweight, clean and free of oil or grease, and not galvanized or coated with other materials. Vertic al clearance between the counterweight and the roadway shall be not less than 5 feet when the movable span is in the fully open position including allowable over -travel. Vertical clearance between the counterweight and any other obstruction (barrier rail, hand rail, etc.) shall be not less than 2 ½ feet in the fully open position, including allowable over -travel. In calculating minimum clearance, counterweight ropes shall be assumed to stretch 2 percent of their calculated length.
2.Counterweight Pockets: Size counterweight pockets to hold balance blocks equal to 15 percent of the weight of the counterweight. Calculations shall assume that the counterweight pockets are 1/3 full of balance blocks. Any counterweight pocket exposed to rainwater shall have at lea st two drain holes that are at least 6 inches in diameter. i.For vertical lift bridges, size counterweight pockets so that the balance blocks do not show above the sides of the pocket. For bascule spans with counterweights that rotate with the movable span, position counterweight pockets to allow for adjustment of the center of gravity of the movable span. Counterweight pockets must securely hold balance blocks during operation of the movable span.
3.Balance Blocks: Fabricate balance blocks as shown on the pla ns and in a uniform manner using Class A concrete with a density of approximately 145 pounds per cubic foot as determined from the test blocks. Balance blocks shall weigh between 80 – 85 pounds to facilitate handling by a single worker. Weigh at least 10 p ercent of the balance blocks at random after they have cured to their final weight. Discard all balance blocks outside of this range, and continue weighing questionable balance blocks to the satisfaction of the Project Engineer. Construct enough balance bl ocks to counterbalance the movable span when it is fully completed. A complete and balanced counterweight shall have at least 1 percent of its weight in balance blocks installed in the counterweight pockets, and at least an additional 1/2 percent of its we ight in extra balance blocks to be stored on site as directed by the Project Engineer for future adjustment.
820.07.7 Installation of Alignment Critical Mechanical Equipment:
Alignment critical mechanical equipment such as trunnion bearings, gears, drive shafts, gearboxes, brakes, shaft couplings, etc., shall be installed by millwrights experienced in the installation of the specified equipment. Use industry standard alignment equipment and techniques. Alignments shall meet tolerances specified in the Contract, or the manufacturer’s minimum requirements, whichever is more stringent.
820.07.8 Temporary Operation and Maintenance of Movable Span:
Provide qualified personnel to operate a nd maintain the movable bridge as directed below. All bridge operations shall be in accordance with the United States Coast Guard (USCG) permit or negotiated agreement with the USCG. While operating the movable bridge, the contractor is responsible for mai ntenance of the structure. In addition to 107.19 , damages that are the result of either negligent operation or negligent maintenance are the responsibility of the c ontractor.
1.New Construction: Operate and maintain the movable span until the Department agrees to take final acceptance of the project. If the project utilizes a movable detour bridge during the construction of a new movable bridge, operate and maintain the detour bridge for the dur ation of the project.
2.Repair and Rehabilitation Projects: The Department will continue to operate and maintain the movable span during construction if the contractor is performing work away from the movable span such that neither his personnel nor his equ ipment could be harmed by its operation, and if the work being performed in no way affects the operation of the movable span. Once work begins on or within the limits of the movable span, or if the work affects the operation of the movable span, the contra ctor shall begin operating and maintaining the movable span. The Department’s operator will remain in the operator’s house during normal operating times, and will continue to monitor the marine radio and log marine traffic, however, the contractor will be responsible for the actual operation of the movable span. If the work has involved the mechanical or electrical systems, or if the work has altered the operation of the movable span in any way, the contractor shall continue to operate the movable span until final acceptance of the project.
820.07.9 Final Setup, and Field Testing of Mechanical and Electrical
Systems: Notify the Bridge Engineer 14 calendar days prior to final setup and field testing so the EOR may be present. After installation of all mechanical an d electrical systems has been completed and all weight that will remain on the movable span during operation is in place, adjust and test all mechanical and electrical systems as directed by the plans.
820.07.7 Installation of Alignment Critical Mechanical Equipment:
Alignment critical mechanical equipment such as trunnion bearings, gears, drive shafts, gearboxes, brakes, shaft couplings, etc., shall be installed by millwrights experienced in the installation of the specified equipment. Use industry standard alignment equipment and techniques. Alignments shall meet tolerances specified in the Contract, or the manufacturer’s minimum requirements, whichever is more stringent.
820.07.8 Temporary Operation and Maintenance of Movable Span:
Provide qualified personnel to operate a nd maintain the movable bridge as directed below. All bridge operations shall be in accordance with the United States Coast Guard (USCG) permit or negotiated agreement with the USCG. While operating the movable bridge, the contractor is responsible for mai ntenance of the structure. In addition to 107.19 , damages that are the result of either negligent operation or negligent maintenance are the responsibility of the c ontractor.
1.New Construction: Operate and maintain the movable span until the Department agrees to take final acceptance of the project. If the project utilizes a movable detour bridge during the construction of a new movable bridge, operate and maintain the detour bridge for the dur ation of the project.
2.Repair and Rehabilitation Projects: The Department will continue to operate and maintain the movable span during construction if the contractor is performing work away from the movable span such that neither his personnel nor his equ ipment could be harmed by its operation, and if the work being performed in no way affects the operation of the movable span. Once work begins on or within the limits of the movable span, or if the work affects the operation of the movable span, the contra ctor shall begin operating and maintaining the movable span. The Department’s operator will remain in the operator’s house during normal operating times, and will continue to monitor the marine radio and log marine traffic, however, the contractor will be responsible for the actual operation of the movable span. If the work has involved the mechanical or electrical systems, or if the work has altered the operation of the movable span in any way, the contractor shall continue to operate the movable span until final acceptance of the project.
820.07.9 Final Setup, and Field Testing of Mechanical and Electrical
Systems: Notify the Bridge Engineer 14 calendar days prior to final setup and field testing so the EOR may be present. After installation of all mechanical an d electrical systems has been completed and all weight that will remain on the movable span during operation is in place, adjust and test all mechanical and electrical systems as directed by the plans.
820.07.7 Installation of Alignment Critical Mechanical Equipment:
Alignment critical mechanical equipment such as trunnion bearings, gears, drive shafts, gearboxes, brakes, shaft couplings, etc., shall be installed by millwrights experienced in the installation of the specified equipment. Use industry standard alignment equipment and techniques. Alignments shall meet tolerances specified in the Contract, or the manufacturer’s minimum requirements, whichever is more stringent.
820.07.8 Temporary Operation and Maintenance of Movable Span:
Provide qualified personnel to operate a nd maintain the movable bridge as directed below. All bridge operations shall be in accordance with the United States Coast Guard (USCG) permit or negotiated agreement with the USCG. While operating the movable bridge, the contractor is responsible for mai ntenance of the structure. In addition to 107.19 , damages that are the result of either negligent operation or negligent maintenance are the responsibility of the c ontractor.
1.New Construction: Operate and maintain the movable span until the Department agrees to take final acceptance of the project. If the project utilizes a movable detour bridge during the construction of a new movable bridge, operate and maintain the detour bridge for the dur ation of the project.
2.Repair and Rehabilitation Projects: The Department will continue to operate and maintain the movable span during construction if the contractor is performing work away from the movable span such that neither his personnel nor his equ ipment could be harmed by its operation, and if the work being performed in no way affects the operation of the movable span. Once work begins on or within the limits of the movable span, or if the work affects the operation of the movable span, the contra ctor shall begin operating and maintaining the movable span. The Department’s operator will remain in the operator’s house during normal operating times, and will continue to monitor the marine radio and log marine traffic, however, the contractor will be responsible for the actual operation of the movable span. If the work has involved the mechanical or electrical systems, or if the work has altered the operation of the movable span in any way, the contractor shall continue to operate the movable span until final acceptance of the project.
820.07.9 Final Setup, and Field Testing of Mechanical and Electrical
Systems: Notify the Bridge Engineer 14 calendar days prior to final setup and field testing so the EOR may be present. After installation of all mechanical an d electrical systems has been completed and all weight that will remain on the movable span during operation is in place, adjust and test all mechanical and electrical systems as directed by the plans.
820.07.7 Installation of Alignment Critical Mechanical Equipment:
Alignment critical mechanical equipment such as trunnion bearings, gears, drive shafts, gearboxes, brakes, shaft couplings, etc., shall be installed by millwrights experienced in the installation of the specified equipment. Use industry standard alignment equipment and techniques. Alignments shall meet tolerances specified in the Contract, or the manufacturer’s minimum requirements, whichever is more stringent.
820.07.8 Temporary Operation and Maintenance of Movable Span:
Provide qualified personnel to operate a nd maintain the movable bridge as directed below. All bridge operations shall be in accordance with the United States Coast Guard (USCG) permit or negotiated agreement with the USCG. While operating the movable bridge, the contractor is responsible for mai ntenance of the structure. In addition to 107.19 , damages that are the result of either negligent operation or negligent maintenance are the responsibility of the c ontractor.
1.New Construction: Operate and maintain the movable span until the Department agrees to take final acceptance of the project. If the project utilizes a movable detour bridge during the construction of a new movable bridge, operate and maintain the detour bridge for the dur ation of the project.
2.Repair and Rehabilitation Projects: The Department will continue to operate and maintain the movable span during construction if the contractor is performing work away from the movable span such that neither his personnel nor his equ ipment could be harmed by its operation, and if the work being performed in no way affects the operation of the movable span. Once work begins on or within the limits of the movable span, or if the work affects the operation of the movable span, the contra ctor shall begin operating and maintaining the movable span. The Department’s operator will remain in the operator’s house during normal operating times, and will continue to monitor the marine radio and log marine traffic, however, the contractor will be responsible for the actual operation of the movable span. If the work has involved the mechanical or electrical systems, or if the work has altered the operation of the movable span in any way, the contractor shall continue to operate the movable span until final acceptance of the project.
820.07.9 Final Setup, and Field Testing of Mechanical and Electrical
Systems: Notify the Bridge Engineer 14 calendar days prior to final setup and field testing so the EOR may be present. After installation of all mechanical an d electrical systems has been completed and all weight that will remain on the movable span during operation is in place, adjust and test all mechanical and electrical systems as directed by the plans. Prior to the inspection by the EOR, all mechanical and electrical systems shall be successfully adjusted and tested to the satisfaction of the Systems Integrator and the Project Engineer. On the day of the inspection, have personnel and equipment available to make any adjustments to the span that may be neces sary such as troubleshooting and correcting the electrical system, and adjusting limit switches, buffers, span locks, brakes, time delay relays, balance blocks, relief valves, etc. The cost of any additional inspections beyond one final and one follow -up inspection will be back -charged to the contractor.
820.07.10 Training: After the final inspection, setup, and testing of the
mechanical and electrical systems have been completed, have experienced personnel provide the following training:
1.Training of Bridge Operat ors: Instruct Department bridge operators in the complete and correct operation of the movable span, including all fault conditions. The Bridge Operation Manual shall be the basis for this training. Allow 14 calendar days notice for scheduling training se ssions. Provide five days (eight hours each) for training sessions. After the Department has accepted responsibility for operating the movable bridge, provide experienced personnel on two hour notice during operating hours to assist with operational proble ms for 30 calendar days.
2.Training of Bridge Maintenance Personnel: Instruct Department maintenance personnel as to the function, settings, adjustments, and lubrication of the mechanical and electrical systems. The Mechanical and Electrical Operation and M aintenance Manuals shall be the basis for this training. Allow 14 calendar days notice for scheduling training sessions. Provide five days (eight hours each) for training sessions. After the Department has accepted responsibility for maintaining the movabl e bridge, provide experienced personnel on two hours notice during operating hours to assist with operational/maintenance problems for 30 calendar days.
820.08 Construction Require Ments for Swing Span
BRIDGES.
820.08.1 Construction of Approach Spans: Approach spans
immediately adjacent to the movable span shall not be constructed until “End Lift Reactions and Elevations,” 820.08.9 has been completed. Each approach span must match the elevation and profile of the movable span across the entire width of the roadway to within plus or minus 1/8 inch.
820.08.2 Installation of Center P ivot Bearing:
Prior to the inspection by the EOR, all mechanical and electrical systems shall be successfully adjusted and tested to the satisfaction of the Systems Integrator and the Project Engineer. On the day of the inspection, have personnel and equipment available to make any adjustments to the span that may be neces sary such as troubleshooting and correcting the electrical system, and adjusting limit switches, buffers, span locks, brakes, time delay relays, balance blocks, relief valves, etc. The cost of any additional inspections beyond one final and one follow -up inspection will be back -charged to the contractor.
820.07.10 Training: After the final inspection, setup, and testing of the
mechanical and electrical systems have been completed, have experienced personnel provide the following training:
1.Training of Bridge Operat ors: Instruct Department bridge operators in the complete and correct operation of the movable span, including all fault conditions. The Bridge Operation Manual shall be the basis for this training. Allow 14 calendar days notice for scheduling training se ssions. Provide five days (eight hours each) for training sessions. After the Department has accepted responsibility for operating the movable bridge, provide experienced personnel on two hour notice during operating hours to assist with operational proble ms for 30 calendar days.
2.Training of Bridge Maintenance Personnel: Instruct Department maintenance personnel as to the function, settings, adjustments, and lubrication of the mechanical and electrical systems. The Mechanical and Electrical Operation and M aintenance Manuals shall be the basis for this training. Allow 14 calendar days notice for scheduling training sessions. Provide five days (eight hours each) for training sessions. After the Department has accepted responsibility for maintaining the movabl e bridge, provide experienced personnel on two hours notice during operating hours to assist with operational/maintenance problems for 30 calendar days.
820.08 Construction Require Ments for Swing Span
BRIDGES.
820.08.1 Construction of Approach Spans: Approach spans
immediately adjacent to the movable span shall not be constructed until “End Lift Reactions and Elevations,” 820.08.9 has been completed. Each approach span must match the elevation and profile of the movable span across the entire width of the roadway to within plus or minus 1/8 inch.
820.08.2 Installation of Center P ivot Bearing:
Prior to the inspection by the EOR, all mechanical and electrical systems shall be successfully adjusted and tested to the satisfaction of the Systems Integrator and the Project Engineer. On the day of the inspection, have personnel and equipment available to make any adjustments to the span that may be neces sary such as troubleshooting and correcting the electrical system, and adjusting limit switches, buffers, span locks, brakes, time delay relays, balance blocks, relief valves, etc. The cost of any additional inspections beyond one final and one follow -up inspection will be back -charged to the contractor.
820.07.10 Training: After the final inspection, setup, and testing of the
mechanical and electrical systems have been completed, have experienced personnel provide the following training:
1.Training of Bridge Operat ors: Instruct Department bridge operators in the complete and correct operation of the movable span, including all fault conditions. The Bridge Operation Manual shall be the basis for this training. Allow 14 calendar days notice for scheduling training se ssions. Provide five days (eight hours each) for training sessions. After the Department has accepted responsibility for operating the movable bridge, provide experienced personnel on two hour notice during operating hours to assist with operational proble ms for 30 calendar days.
2.Training of Bridge Maintenance Personnel: Instruct Department maintenance personnel as to the function, settings, adjustments, and lubrication of the mechanical and electrical systems. The Mechanical and Electrical Operation and M aintenance Manuals shall be the basis for this training. Allow 14 calendar days notice for scheduling training sessions. Provide five days (eight hours each) for training sessions. After the Department has accepted responsibility for maintaining the movabl e bridge, provide experienced personnel on two hours notice during operating hours to assist with operational/maintenance problems for 30 calendar days.
820.08 Construction Require Ments for Swing Span
BRIDGES.
820.08.1 Construction of Approach Spans: Approach spans
immediately adjacent to the movable span shall not be constructed until “End Lift Reactions and Elevations,” 820.08.9 has been completed. Each approach span must match the elevation and profile of the movable span across the entire width of the roadway to within plus or minus 1/8 inch.
820.08.2 Installation of Center P ivot Bearing:
Prior to the inspection by the EOR, all mechanical and electrical systems shall be successfully adjusted and tested to the satisfaction of the Systems Integrator and the Project Engineer. On the day of the inspection, have personnel and equipment available to make any adjustments to the span that may be neces sary such as troubleshooting and correcting the electrical system, and adjusting limit switches, buffers, span locks, brakes, time delay relays, balance blocks, relief valves, etc. The cost of any additional inspections beyond one final and one follow -up inspection will be back -charged to the contractor.
820.07.10 Training: After the final inspection, setup, and testing of the
mechanical and electrical systems have been completed, have experienced personnel provide the following training:
1.Training of Bridge Operat ors: Instruct Department bridge operators in the complete and correct operation of the movable span, including all fault conditions. The Bridge Operation Manual shall be the basis for this training. Allow 14 calendar days notice for scheduling training se ssions. Provide five days (eight hours each) for training sessions. After the Department has accepted responsibility for operating the movable bridge, provide experienced personnel on two hour notice during operating hours to assist with operational proble ms for 30 calendar days.
2.Training of Bridge Maintenance Personnel: Instruct Department maintenance personnel as to the function, settings, adjustments, and lubrication of the mechanical and electrical systems. The Mechanical and Electrical Operation and M aintenance Manuals shall be the basis for this training. Allow 14 calendar days notice for scheduling training sessions. Provide five days (eight hours each) for training sessions. After the Department has accepted responsibility for maintaining the movabl e bridge, provide experienced personnel on two hours notice during operating hours to assist with operational/maintenance problems for 30 calendar days.
820.08 Construction Require Ments for Swing Span
BRIDGES.
820.08.1 Construction of Approach Spans: Approach spans
immediately adjacent to the movable span shall not be constructed until “End Lift Reactions and Elevations,” 820.08.9 has been completed. Each approach span must match the elevation and profile of the movable span across the entire width of the roadway to within plus or minus 1/8 inch.
820.08.2 Installation of Center P ivot Bearing:
Prior to the inspection by the EOR, all mechanical and electrical systems shall be successfully adjusted and tested to the satisfaction of the Systems Integrator and the Project Engineer. On the day of the inspection, have personnel and equipment available to make any adjustments to the span that may be neces sary such as troubleshooting and correcting the electrical system, and adjusting limit switches, buffers, span locks, brakes, time delay relays, balance blocks, relief valves, etc. The cost of any additional inspections beyond one final and one follow -up inspection will be back -charged to the contractor.
820.07.10 Training: After the final inspection, setup, and testing of the
mechanical and electrical systems have been completed, have experienced personnel provide the following training:
1.Training of Bridge Operat ors: Instruct Department bridge operators in the complete and correct operation of the movable span, including all fault conditions. The Bridge Operation Manual shall be the basis for this training. Allow 14 calendar days notice for scheduling training se ssions. Provide five days (eight hours each) for training sessions. After the Department has accepted responsibility for operating the movable bridge, provide experienced personnel on two hour notice during operating hours to assist with operational proble ms for 30 calendar days.
2.Training of Bridge Maintenance Personnel: Instruct Department maintenance personnel as to the function, settings, adjustments, and lubrication of the mechanical and electrical systems. The Mechanical and Electrical Operation and M aintenance Manuals shall be the basis for this training. Allow 14 calendar days notice for scheduling training sessions. Provide five days (eight hours each) for training sessions. After the Department has accepted responsibility for maintaining the movabl e bridge, provide experienced personnel on two hours notice during operating hours to assist with operational/maintenance problems for 30 calendar days.
820.08 Construction Require Ments for Swing Span
BRIDGES.
820.08.1 Construction of Approach Spans: Approach spans
immediately adjacent to the movable span shall not be constructed until “End Lift Reactions and Elevations,” 820.08.9 has been completed. Each approach span must match the elevation and profile of the movable span across the entire width of the roadway to within plus or minus 1/8 inch.
820.08.2 Installation of Center P ivot Bearing:
1.Installation of Anchor Bolts: Cast anchor bolts in the pivot pier with an embedded template as shown on the plans. Use survey equipment to locate template horizontally and vertically. No individual anchor bolt can be located more than plus or minus 1/4 inch from its specified location in all directions. Anchor bolts shall be vertical to within 0.5 degrees. Securely anchor template and monitor template locations while the pivot pier is placed and vibrated to assure no movement.
2.Installation of Center Pivot Bearing Base: After the pivot pier has met the requirements for form removal, orient the pivot bearing base on the anchor bolts as shown on the plans. Using the leveling screws provided, set the elevation of the top of the pivot bearing base to plus or minus 1/8 inch of the design elevation, and level in all directions with a machinist’s level. Coat leveling screws with lubricant to prevent adhesion to grout. Form up and grout under the pivot bearing base as shown on the plans using a pre -packaged non -shrink epoxy grout with a minimum seven day compressive strength of 13,000 psi. Follow grout manufacturer’s installation instructions. Mix grout so it is flowable and self - leveling. Pour grout from one side of the form to prevent air from being t rapped under the pivot bearing base in accordance with the manufacturer’s recommendations. Grout shall have a minimum bearing contact area of 95 percent with the pivot bearing base. Packing grout under pivot bearing base is not allowed. Allow grout to cure for a minimum of two days before tightening anchor bolts and removing forms.
2.Assembly of Center Pivot Bearing: Notify the Bridge Engineer 14 calendar days prior to assembly of the center pivot bearing so the EOR may be present. Assembly must be performed on a clear, dry day. Install the center pivot jacket on the center pivot base such that the sight gauge and fill pipe are oriented as shown on the plans. Torque bolts in accordance with the bolt specifications in Section 821 . Thoroughly clean the inside of the jacket with an approved solvent to remove the protective grease applied by the shop. Use only clean, lint free rags. Wipe out solvent and apply a thin coatin g of the oil specified to lubricate the bearing. Similarly clean the steel disk bearing, coat with oil, and install in jacket without scratching or damaging the bearing surface. Clean the bronze disk bearing, coat with oil, and install in jacket without sc ratching or damaging the bearing surface. Install sight gauge and fill pipe. Add oil to the level shown on the plans. Apply the grease specified for the bearing seals to the outside of the jacket to assist with the installation of the bearing seals. Instal l the center pivot bearing top, and fully lubricate the seal cavity with grease. Remove leveling screws, and install steel set screws to fill hole.
3.Clean and Paint Pivot Bearing: Immediately after completing the installation of the center pivot bearing, c lean the entire bearing assembly and complete the required mechanical paint system. Do not paint over name plates or sight gauge.
820.08.3 Erection of Bobtail Swing Span with Combination
Concrete and Grid Deck: The following is a suggested sequence of constructi on that complies with the design of the movable span. Prior to construction, submit detailed erection drawings to the Bridge Engineer for review. As a minimum, the submittal shall show the sequence of construction, falsework construction, and counterweight /balance block calculations. Each time the erection blocking is adjusted, submit the blocking ordinates of the movable span to the Bridge Engineer for review. Note that the movable span will not be balanced until the end of the erection process. All erecti on blocking adjustments to the movable span will be made in an unbalanced condition. Maintain stability of the movable span during construction, but allow vertical deflection as required by the erection process.
1.Erection of Pivot Girder: Check elevation o f center pivot bearing top with acceptable survey equipment and adjust spacer plate if needed. Tolerance on plan elevation is plus or minus 1/8 inch. Place the pivot girder on the pivot bearing and check the elevation of the top flange. Adjust spacer plate if needed and complete connection.
2.Erection of Steel: Provide blocking under each end of the pivot girder. Provide pile supported falsework with blocking at both ends of the main girders. Provide pile supported falsework with blocking at field splices if needed. Falsework must be of sufficient strength and rigidity to support erection loading without deflection. Blocking shall be capable of adjusting to multiple profiles. Set blocking such that the main girders match the plan “Camber” diagram. Check the p rofiles of each main girder on a regular basis throughout construction. Complete and finalize all span connections including main girder field splices, pivot girder, floor beams, stringers, and lateral bracing. Adjust blocking to allow the span to fully de flect. All steel dead load will be supported by the pivot girder. Measure deflection and compare to the plan “Steel Dead Load” diagram. Submit measurements to the Bridge Engineer for review.
2.Construction of Counterweight and Placement of Grid Deck Panels: Conform to 820.07.6 . Construct forms and place counterweight concrete in one continuous placement. Place grid deck panels on the span, but do not connect the grid deck panels to the bridge structure. Remove forms after the counterweight has met requirements for form removal i n 805.07 .
3.Placement of Concrete Deck: Adjust blocking to match the plan “Steel, Deck, and Counterweight Dead Load” diagram. Construct forms and place concrete in on e continuous placement. Remove forms after the concrete deck has met requirements for form removal in 805.07 .
820.08.3 Erection of Bobtail Swing Span with Combination
Concrete and Grid Deck: The following is a suggested sequence of constructi on that complies with the design of the movable span. Prior to construction, submit detailed erection drawings to the Bridge Engineer for review. As a minimum, the submittal shall show the sequence of construction, falsework construction, and counterweight /balance block calculations. Each time the erection blocking is adjusted, submit the blocking ordinates of the movable span to the Bridge Engineer for review. Note that the movable span will not be balanced until the end of the erection process. All erecti on blocking adjustments to the movable span will be made in an unbalanced condition. Maintain stability of the movable span during construction, but allow vertical deflection as required by the erection process.
1.Erection of Pivot Girder: Check elevation o f center pivot bearing top with acceptable survey equipment and adjust spacer plate if needed. Tolerance on plan elevation is plus or minus 1/8 inch. Place the pivot girder on the pivot bearing and check the elevation of the top flange. Adjust spacer plate if needed and complete connection.
2.Erection of Steel: Provide blocking under each end of the pivot girder. Provide pile supported falsework with blocking at both ends of the main girders. Provide pile supported falsework with blocking at field splices if needed. Falsework must be of sufficient strength and rigidity to support erection loading without deflection. Blocking shall be capable of adjusting to multiple profiles. Set blocking such that the main girders match the plan “Camber” diagram. Check the p rofiles of each main girder on a regular basis throughout construction. Complete and finalize all span connections including main girder field splices, pivot girder, floor beams, stringers, and lateral bracing. Adjust blocking to allow the span to fully de flect. All steel dead load will be supported by the pivot girder. Measure deflection and compare to the plan “Steel Dead Load” diagram. Submit measurements to the Bridge Engineer for review.
2.Construction of Counterweight and Placement of Grid Deck Panels: Conform to 820.07.6 . Construct forms and place counterweight concrete in one continuous placement. Place grid deck panels on the span, but do not connect the grid deck panels to the bridge structure. Remove forms after the counterweight has met requirements for form removal i n 805.07 .
3.Placement of Concrete Deck: Adjust blocking to match the plan “Steel, Deck, and Counterweight Dead Load” diagram. Construct forms and place concrete in on e continuous placement. Remove forms after the concrete deck has met requirements for form removal in 805.07 .
4.Connection of Grid Deck Panels: Adjust blocking such that the plan finish grade is obtained. Connect the grid deck panels to the bridge structure as shown on the plans. After connection of the grid deck is completed, place concrete fill in specified areas.
5.Installation of Bridge Railings, Mechanical Equipment, and Balance Blocks: Set and complete bridge railings, install all mechanical equipment, and add balance blocks to balance the movable span.
820.08.4 Erection of Bobtail Swing Span with All Concrete Deck:
The following is a suggested sequence of const ruction that complies with the design of the movable span. Prior to construction, submit detailed erection drawings to the Bridge Engineer for review. As a minimum, the submittal shall show the sequence of construction, falsework construction, and counterw eight/balance block calculations. Each time the erection blocking is adjusted, submit the blocking ordinates of the movable span to the Bridge Engineer for review. Note that the movable span will not be balanced until the end of the erection process. All e rection blocking adjustments to the movable span will be made in an unbalanced condition. Maintain stability of the movable span during construction, but allow vertical deflection as required by the erection process.
1.Erection of Pivot Girder: Check elevat ion of center pivot bearing top with acceptable survey equipment and adjust spacer plate if needed. Tolerance on plan elevation is plus or minus 1/8 inch. Place the pivot girder on the pivot bearing and check the elevation of the top flange. Adjust spacer plate if needed and complete connection.
2.Erection of Steel: Provide blocking under each end of the pivot girder. Provide pile supported falsework with blocking at both ends of the main girders. Provide pile supported falsework with blocking at field spli ces if needed. Falsework must be of sufficient strength and rigidity to support erection loading without deflection. Blocking shall be capable of adjusting to multiple profiles. Set blocking such that the main girders match the plan “Camber” diagram. Check the profiles of each main girder on a regular basis throughout construction. Complete and finalize all span connections including main girder field splices, pivot girder, floor beams, stringers, and lateral bracing. Adjust blocking to allow the span to fu lly deflect. All steel dead load will be supported by the pivot girder. Measure deflection and compare to the plan “Steel Dead Load” diagram. Submit measurements to the Bridge Engineer for review.
2.Construction of Counterweight: Conform to 820.07.6 . Construct forms and place the counterweight concrete in one continuous place ment. Remove forms after the counterweight has met requirements for form removal in 805.07 .
4.Connection of Grid Deck Panels: Adjust blocking such that the plan finish grade is obtained. Connect the grid deck panels to the bridge structure as shown on the plans. After connection of the grid deck is completed, place concrete fill in specified areas.
5.Installation of Bridge Railings, Mechanical Equipment, and Balance Blocks: Set and complete bridge railings, install all mechanical equipment, and add balance blocks to balance the movable span.
820.08.4 Erection of Bobtail Swing Span with All Concrete Deck:
The following is a suggested sequence of const ruction that complies with the design of the movable span. Prior to construction, submit detailed erection drawings to the Bridge Engineer for review. As a minimum, the submittal shall show the sequence of construction, falsework construction, and counterw eight/balance block calculations. Each time the erection blocking is adjusted, submit the blocking ordinates of the movable span to the Bridge Engineer for review. Note that the movable span will not be balanced until the end of the erection process. All e rection blocking adjustments to the movable span will be made in an unbalanced condition. Maintain stability of the movable span during construction, but allow vertical deflection as required by the erection process.
1.Erection of Pivot Girder: Check elevat ion of center pivot bearing top with acceptable survey equipment and adjust spacer plate if needed. Tolerance on plan elevation is plus or minus 1/8 inch. Place the pivot girder on the pivot bearing and check the elevation of the top flange. Adjust spacer plate if needed and complete connection.
2.Erection of Steel: Provide blocking under each end of the pivot girder. Provide pile supported falsework with blocking at both ends of the main girders. Provide pile supported falsework with blocking at field spli ces if needed. Falsework must be of sufficient strength and rigidity to support erection loading without deflection. Blocking shall be capable of adjusting to multiple profiles. Set blocking such that the main girders match the plan “Camber” diagram. Check the profiles of each main girder on a regular basis throughout construction. Complete and finalize all span connections including main girder field splices, pivot girder, floor beams, stringers, and lateral bracing. Adjust blocking to allow the span to fu lly deflect. All steel dead load will be supported by the pivot girder. Measure deflection and compare to the plan “Steel Dead Load” diagram. Submit measurements to the Bridge Engineer for review.
2.Construction of Counterweight: Conform to 820.07.6 . Construct forms and place the counterweight concrete in one continuous place ment. Remove forms after the counterweight has met requirements for form removal in 805.07 .
3.Placement of Concrete Deck: Adjust blocking to match the plan “Steel, D eck, and Counterweight Dead Load” diagram. Construct forms and place concrete in one continuous placement except for the specified closure placement. Remove forms after the concrete deck has met requirements for form removal in 805.07 .
4.Installation of Bridge Railings: Adjust blocking such that the plan finish grade is obtained. Set and complete bridge railings, install all mechanical equipment, and add balance block s to balance the movable span.
5.Concrete Closure Placement: Adjust blocking to allow the span to fully deflect. All dead load shall be supported by the pivot bearing. Complete the closure placement on the bridge deck as shown on the plans. Remove forms aft er the closure placement has met requirements for form removal in 805.07 .
820.08.5 Erection of Equal Arm Swing Span with All Concrete Deck:
The following is a suggested sequence of construction that complies with the design of the movable span. Prior to construction, su bmit detailed erection drawings to the Bridge Engineer for review. As a minimum, the submittal shall show the sequence of construction, falsework construction, and balance block calculations. Each time the erection blocking is adjusted, submit the blocking ordinates of the movable span to the Bridge Engineer for review. Maintain stability of the movable span during construction, but allow vertical deflection as required by the erection process.
1.Erection of Pivot Girder: Check elevation of center pivot bear ing top with survey equipment and adjust spacer plate if needed. Tolerance on plan elevation is plus or minus 1/8 inch. Place the pivot girder on the pivot bearing and check the elevation of the top flange. Adjust spacer plate if needed and complete connec tion.
2.Erection of Steel: Provide blocking under each end of the pivot girder. Provide pile supported falsework with blocking at both ends of the main girders. Provide pile supported falsework with blocking at field splices if needed. Falsework must be of sufficient strength and rigidity to support erection loading without deflection. Blocking shall be capable of adjusting to multiple profiles. Set blocking such that the main girders match the plan “Camber” diagram. Check the profiles of each main girder on a regular basis throughout construction. Complete and finalize all span connections including main girder field splices, pivot girder, floor beams, stringers, and lateral bracing. Adjust blocking to allow the span to fully deflect. All steel dead load wil l be supported by the pivot girder. Measure deflection and compare to the plan “Steel Dead Load” diagram. Submit measurements to the Bridge Engineer for review.
3.Placement of Concrete Deck: Adjust blocking to match the plan “Steel, D eck, and Counterweight Dead Load” diagram. Construct forms and place concrete in one continuous placement except for the specified closure placement. Remove forms after the concrete deck has met requirements for form removal in 805.07 .
4.Installation of Bridge Railings: Adjust blocking such that the plan finish grade is obtained. Set and complete bridge railings, install all mechanical equipment, and add balance block s to balance the movable span.
5.Concrete Closure Placement: Adjust blocking to allow the span to fully deflect. All dead load shall be supported by the pivot bearing. Complete the closure placement on the bridge deck as shown on the plans. Remove forms aft er the closure placement has met requirements for form removal in 805.07 .
820.08.5 Erection of Equal Arm Swing Span with All Concrete Deck:
The following is a suggested sequence of construction that complies with the design of the movable span. Prior to construction, su bmit detailed erection drawings to the Bridge Engineer for review. As a minimum, the submittal shall show the sequence of construction, falsework construction, and balance block calculations. Each time the erection blocking is adjusted, submit the blocking ordinates of the movable span to the Bridge Engineer for review. Maintain stability of the movable span during construction, but allow vertical deflection as required by the erection process.
1.Erection of Pivot Girder: Check elevation of center pivot bear ing top with survey equipment and adjust spacer plate if needed. Tolerance on plan elevation is plus or minus 1/8 inch. Place the pivot girder on the pivot bearing and check the elevation of the top flange. Adjust spacer plate if needed and complete connec tion.
2.Erection of Steel: Provide blocking under each end of the pivot girder. Provide pile supported falsework with blocking at both ends of the main girders. Provide pile supported falsework with blocking at field splices if needed. Falsework must be of sufficient strength and rigidity to support erection loading without deflection. Blocking shall be capable of adjusting to multiple profiles. Set blocking such that the main girders match the plan “Camber” diagram. Check the profiles of each main girder on a regular basis throughout construction. Complete and finalize all span connections including main girder field splices, pivot girder, floor beams, stringers, and lateral bracing. Adjust blocking to allow the span to fully deflect. All steel dead load wil l be supported by the pivot girder. Measure deflection and compare to the plan “Steel Dead Load” diagram. Submit measurements to the Bridge Engineer for review.
2.Placement of Concrete Deck: Adjust blocking to match the plan “Steel and Deck Dead Load” diagram. Construct forms and place concrete in one continuous placement except for the specified closure placement. Remove forms after the concrete deck has met requirements for form removal in 805.07 .
3.Installation of Bridge Railings, Mechanical Equipment and Balance Blocks: Adjust blocking such that the plan finished grade is obtained. Set and complete bridge railings, install all mechanical equipment, and add balance blocks to balance the movable span.
4.Concrete Closure Placement: Adjust blocking to allow the span to fully deflect. All dead load shall be supported by the pivot bearing. Complete the clo sure placement on the bridge deck as shown on the plans. Remove forms after the closure placement has met requirements for form removal in 805.07 .
820.08.6 Erection of Equa l Arm Swing Span with Grid Deck: The
following is a suggested sequence of construction that complies with the design of the movable span. Prior to construction, submit detailed erection drawings to the Bridge Engineer for review. As a minimum, the submi ttal shall show the sequence of construction, falsework construction, and balance block calculations. Each time the erection blocking is adjusted, submit the blocking ordinates of the movable span to the Bridge Engineer for review. Maintain stability of th e movable span during construction, but allow vertical deflection as required by the erection process.
1.Erection of Pivot Girder: Check elevation of center pivot bearing top with acceptable survey equipment and adjust spacer plate if needed. Tolerance on p lan elevation is plus or minus 1/8 inch. Place the pivot girder on the pivot bearing and check the elevation of the top flange. Adjust spacer plate if needed and complete connection.
2.Erection of Steel: Provide blocking under each end of the pivot girder. Provide pile supported falsework with blocking at both ends of the main girders. Provide pile supported falsework with blocking at field splices if needed. Falsework must be of sufficient strength and rigidity to support erection loading without deflection . Blocking shall be capable of adjusting to multiple profiles. Set blocking such that the main girders match the plan “Camber” diagram. Check the profiles of each main girder on a regular basis throughout construction. Complete and finalize all span connec tions including main girder field splices, pivot girder, floor beams, stringers, and lateral bracing. Adjust blocking to allow the span to fully deflect. All steel dead load will be supported by the pivot girder. Measure deflection and compare to the plan “Steel Dead Load” diagram. Submit measurements to the Bridge Engineer for review.
2.Placement of Concrete Deck: Adjust blocking to match the plan “Steel and Deck Dead Load” diagram. Construct forms and place concrete in one continuous placement except for the specified closure placement. Remove forms after the concrete deck has met requirements for form removal in 805.07 .
3.Installation of Bridge Railings, Mechanical Equipment and Balance Blocks: Adjust blocking such that the plan finished grade is obtained. Set and complete bridge railings, install all mechanical equipment, and add balance blocks to balance the movable span.
4.Concrete Closure Placement: Adjust blocking to allow the span to fully deflect. All dead load shall be supported by the pivot bearing. Complete the clo sure placement on the bridge deck as shown on the plans. Remove forms after the closure placement has met requirements for form removal in 805.07 .
820.08.6 Erection of Equa l Arm Swing Span with Grid Deck: The
following is a suggested sequence of construction that complies with the design of the movable span. Prior to construction, submit detailed erection drawings to the Bridge Engineer for review. As a minimum, the submi ttal shall show the sequence of construction, falsework construction, and balance block calculations. Each time the erection blocking is adjusted, submit the blocking ordinates of the movable span to the Bridge Engineer for review. Maintain stability of th e movable span during construction, but allow vertical deflection as required by the erection process.
1.Erection of Pivot Girder: Check elevation of center pivot bearing top with acceptable survey equipment and adjust spacer plate if needed. Tolerance on p lan elevation is plus or minus 1/8 inch. Place the pivot girder on the pivot bearing and check the elevation of the top flange. Adjust spacer plate if needed and complete connection.
2.Erection of Steel: Provide blocking under each end of the pivot girder. Provide pile supported falsework with blocking at both ends of the main girders. Provide pile supported falsework with blocking at field splices if needed. Falsework must be of sufficient strength and rigidity to support erection loading without deflection . Blocking shall be capable of adjusting to multiple profiles. Set blocking such that the main girders match the plan “Camber” diagram. Check the profiles of each main girder on a regular basis throughout construction. Complete and finalize all span connec tions including main girder field splices, pivot girder, floor beams, stringers, and lateral bracing. Adjust blocking to allow the span to fully deflect. All steel dead load will be supported by the pivot girder. Measure deflection and compare to the plan “Steel Dead Load” diagram. Submit measurements to the Bridge Engineer for review.
2.Installation of Grid Deck Panels: Adjust blocking such that the plan finish grade is obtained. Place and connect the grid deck panels to the bridge structure as shown on the plans. After connection of the grid deck is completed, place concrete fill in specified areas.
3.Installation of Bridge Railings, Mechanical Equipment and Balance Blocks: Set and complete bridge railings, install all mechanical equipment, and add balance blocks to balance the movable span.
820.08.7 Rack and Pinion Installation (Swing Span): For swing span
bridges with rack and pinion gears, installation requirements are similar to the requirements for vertical lift bridge rack and pinion gears.
820.08.8 Span Balancing (S wing Span): Perform span balancing in the
morning when the effects of temperature on the main girders are at a minimum. Do not perform span balancing during wind that could cause the balance wheels to contact with the track. After the movable span is fu lly constructed, including all mechanical and electrical equipment, and deflected under dead load, adjust the balance wheels to have a 1/2 -to 3/4 -inch gap between the balance wheels and the track. Check the vertical profile ordinates of both main girders a nd compare with the ordinates shown in the plans for the span swinging freely with equal end lifts. Adjust balance blocks, swing the span open and closed, and recheck ordinates. Repeat until the ordinates match the ordinates shown on the plans as close as achievable. Operate the span multiple times and recheck ordinates to ensure the results are repeatable. Adjust balance wheels to have a minimum 1/16 -inch gap with the track at all times during the operation of the span. Swing the span open and closed. If a t any point the gap between the balance wheels and the track exceeds 3/16 inch, that portion of the track must be re -leveled.
820.08.9 End Lift Reactions and Elevations (Swing Span):
Notify the Bridge Engineer 14 calendar days prior to measuring the end lift reactions so the EOR or a designated representative may be present. Measurement of end lift reactions and elevations shall be performed after span balancing has been completed. Submit cut sheets to the Bridge Engineer for review of hydraulic jacks and pressure gauges. Select jack size so that the expected load will register between 2,000 and 4,000 psi. Use 0 -5,000 psi digital pressure gauges with an accuracy of ± 0.25 percent full scale. New gauges shall come with NIST certification. Used gauges shall be newly certified. Power units shall be capable of holding the load for the duration of the measurement process without significant leakage of hydraulic fluid.
2.Installation of Grid Deck Panels: Adjust blocking such that the plan finish grade is obtained. Place and connect the grid deck panels to the bridge structure as shown on the plans. After connection of the grid deck is completed, place concrete fill in specified areas.
3.Installation of Bridge Railings, Mechanical Equipment and Balance Blocks: Set and complete bridge railings, install all mechanical equipment, and add balance blocks to balance the movable span.
820.08.7 Rack and Pinion Installation (Swing Span): For swing span
bridges with rack and pinion gears, installation requirements are similar to the requirements for vertical lift bridge rack and pinion gears.
820.08.8 Span Balancing (S wing Span): Perform span balancing in the
morning when the effects of temperature on the main girders are at a minimum. Do not perform span balancing during wind that could cause the balance wheels to contact with the track. After the movable span is fu lly constructed, including all mechanical and electrical equipment, and deflected under dead load, adjust the balance wheels to have a 1/2 -to 3/4 -inch gap between the balance wheels and the track. Check the vertical profile ordinates of both main girders a nd compare with the ordinates shown in the plans for the span swinging freely with equal end lifts. Adjust balance blocks, swing the span open and closed, and recheck ordinates. Repeat until the ordinates match the ordinates shown on the plans as close as achievable. Operate the span multiple times and recheck ordinates to ensure the results are repeatable. Adjust balance wheels to have a minimum 1/16 -inch gap with the track at all times during the operation of the span. Swing the span open and closed. If a t any point the gap between the balance wheels and the track exceeds 3/16 inch, that portion of the track must be re -leveled.
820.08.9 End Lift Reactions and Elevations (Swing Span):
Notify the Bridge Engineer 14 calendar days prior to measuring the end lift reactions so the EOR or a designated representative may be present. Measurement of end lift reactions and elevations shall be performed after span balancing has been completed. Submit cut sheets to the Bridge Engineer for review of hydraulic jacks and pressure gauges. Select jack size so that the expected load will register between 2,000 and 4,000 psi. Use 0 -5,000 psi digital pressure gauges with an accuracy of ± 0.25 percent full scale. New gauges shall come with NIST certification. Used gauges shall be newly certified. Power units shall be capable of holding the load for the duration of the measurement process without significant leakage of hydraulic fluid.
2.Installation of Grid Deck Panels: Adjust blocking such that the plan finish grade is obtained. Place and connect the grid deck panels to the bridge structure as shown on the plans. After connection of the grid deck is completed, place concrete fill in specified areas.
3.Installation of Bridge Railings, Mechanical Equipment and Balance Blocks: Set and complete bridge railings, install all mechanical equipment, and add balance blocks to balance the movable span.
820.08.7 Rack and Pinion Installation (Swing Span): For swing span
bridges with rack and pinion gears, installation requirements are similar to the requirements for vertical lift bridge rack and pinion gears.
820.08.8 Span Balancing (S wing Span): Perform span balancing in the
morning when the effects of temperature on the main girders are at a minimum. Do not perform span balancing during wind that could cause the balance wheels to contact with the track. After the movable span is fu lly constructed, including all mechanical and electrical equipment, and deflected under dead load, adjust the balance wheels to have a 1/2 -to 3/4 -inch gap between the balance wheels and the track. Check the vertical profile ordinates of both main girders a nd compare with the ordinates shown in the plans for the span swinging freely with equal end lifts. Adjust balance blocks, swing the span open and closed, and recheck ordinates. Repeat until the ordinates match the ordinates shown on the plans as close as achievable. Operate the span multiple times and recheck ordinates to ensure the results are repeatable. Adjust balance wheels to have a minimum 1/16 -inch gap with the track at all times during the operation of the span. Swing the span open and closed. If a t any point the gap between the balance wheels and the track exceeds 3/16 inch, that portion of the track must be re -leveled.
820.08.9 End Lift Reactions and Elevations (Swing Span):
Notify the Bridge Engineer 14 calendar days prior to measuring the end lift reactions so the EOR or a designated representative may be present. Measurement of end lift reactions and elevations shall be performed after span balancing has been completed. Submit cut sheets to the Bridge Engineer for review of hydraulic jacks and pressure gauges. Select jack size so that the expected load will register between 2,000 and 4,000 psi. Use 0 -5,000 psi digital pressure gauges with an accuracy of ± 0.25 percent full scale. New gauges shall come with NIST certification. Used gauges shall be newly certified. Power units shall be capable of holding the load for the duration of the measurement process without significant leakage of hydraulic fluid.
2.Installation of Grid Deck Panels: Adjust blocking such that the plan finish grade is obtained. Place and connect the grid deck panels to the bridge structure as shown on the plans. After connection of the grid deck is completed, place concrete fill in specified areas.
3.Installation of Bridge Railings, Mechanical Equipment and Balance Blocks: Set and complete bridge railings, install all mechanical equipment, and add balance blocks to balance the movable span.
820.08.7 Rack and Pinion Installation (Swing Span): For swing span
bridges with rack and pinion gears, installation requirements are similar to the requirements for vertical lift bridge rack and pinion gears.
820.08.8 Span Balancing (S wing Span): Perform span balancing in the
morning when the effects of temperature on the main girders are at a minimum. Do not perform span balancing during wind that could cause the balance wheels to contact with the track. After the movable span is fu lly constructed, including all mechanical and electrical equipment, and deflected under dead load, adjust the balance wheels to have a 1/2 -to 3/4 -inch gap between the balance wheels and the track. Check the vertical profile ordinates of both main girders a nd compare with the ordinates shown in the plans for the span swinging freely with equal end lifts. Adjust balance blocks, swing the span open and closed, and recheck ordinates. Repeat until the ordinates match the ordinates shown on the plans as close as achievable. Operate the span multiple times and recheck ordinates to ensure the results are repeatable. Adjust balance wheels to have a minimum 1/16 -inch gap with the track at all times during the operation of the span. Swing the span open and closed. If a t any point the gap between the balance wheels and the track exceeds 3/16 inch, that portion of the track must be re -leveled.
820.08.9 End Lift Reactions and Elevations (Swing Span):
Notify the Bridge Engineer 14 calendar days prior to measuring the end lift reactions so the EOR or a designated representative may be present. Measurement of end lift reactions and elevations shall be performed after span balancing has been completed. Submit cut sheets to the Bridge Engineer for review of hydraulic jacks and pressure gauges. Select jack size so that the expected load will register between 2,000 and 4,000 psi. Use 0 -5,000 psi digital pressure gauges with an accuracy of ± 0.25 percent full scale. New gauges shall come with NIST certification. Used gauges shall be newly certified. Power units shall be capable of holding the load for the duration of the measurement process without significant leakage of hydraulic fluid. Use two identical hydraulic jacks with known bore sizes for the long arm, and two identical hydraulic ja cks with known bore sizes for the short arm. All four jacks shall be the same size for an equal arm span. Locate the jacks at the end lift locations as shown on the plans. Each jack shall be connected to a separate power unit. Pressure gauges should be mou nted directly to the jacks, if possible. Otherwise, pressure gauges shall be located as close to the jacks as practical. Jacks must be completely free of air before measurement. Measure end lift reactions in the morning when the effects of temperature on t he main girders are at a minimum. Jack all four corners of the span simultaneously until design reactions are achieved. Allow time for pressure readings to stabilize. Monitor elevations to ensure that each corner is lifting correctly. Survey roadway surfac e elevations at each gutter line, the profile grade line at each end of the span, and at the pivot girder location. Tolerances between survey and plan elevations are ± 1/4 inch at span ends and ± 3/8 inch at the pivot girder location. If elevations are not within tolerances, adjust spacer plate under the pivot girder while weighing the span under 820.08.10 and repeat the process until tolerance is achieved. After end lift elevations have been determined, construct risers for end wedge shoes and install/shim the end wedge shoes to meet elevations. At this point, approach spans adjacent to the movable span may be constructed to match movable span elevations.
820.08.10 Weighing the Movable Span (Swing Span): Notify the
Bridge Engineer 14 calendar days prior to weighing the movable span so the EOR or a designated representative may be pre sent. Weighing of the movable span shall be performed after measurement of end lift reactions has been completed. Spacer plate under the pivot girder can be adjusted at this time if required. Submit Cut Sheets for hydraulic jacks and pressure gauges to the Bridge Engineer for review. Select jack size so that the expected load will register between 6,000 and 8,000 psi. Use 0 -10,000 psi digital pressure gauges with an accuracy of ± 0.25 percent full scale. New gauges shall come with NIST certification. Used g auges shall be newly certified. Use two identical hydraulic jacks with known bore sizes, and locate them under the pivot girder where shown on the plans. Each jack should be connected to a separate power unit. Power units shall be capable of holding the lo ad for the duration of the weighing process without significant leakage of hydraulic fluid. Pressure gauges should be mounted directly to the jacks if possible. Otherwise, pressure gauges shall be located as close to the jacks as practical. Jacks shall be completely free of air before measurement. Use two identical hydraulic jacks with known bore sizes for the long arm, and two identical hydraulic ja cks with known bore sizes for the short arm. All four jacks shall be the same size for an equal arm span. Locate the jacks at the end lift locations as shown on the plans. Each jack shall be connected to a separate power unit. Pressure gauges should be mou nted directly to the jacks, if possible. Otherwise, pressure gauges shall be located as close to the jacks as practical. Jacks must be completely free of air before measurement. Measure end lift reactions in the morning when the effects of temperature on t he main girders are at a minimum. Jack all four corners of the span simultaneously until design reactions are achieved. Allow time for pressure readings to stabilize. Monitor elevations to ensure that each corner is lifting correctly. Survey roadway surfac e elevations at each gutter line, the profile grade line at each end of the span, and at the pivot girder location. Tolerances between survey and plan elevations are ± 1/4 inch at span ends and ± 3/8 inch at the pivot girder location. If elevations are not within tolerances, adjust spacer plate under the pivot girder while weighing the span under 820.08.10 and repeat the process until tolerance is achieved. After end lift elevations have been determined, construct risers for end wedge shoes and install/shim the end wedge shoes to meet elevations. At this point, approach spans adjacent to the movable span may be constructed to match movable span elevations.
820.08.10 Weighing the Movable Span (Swing Span): Notify the
Bridge Engineer 14 calendar days prior to weighing the movable span so the EOR or a designated representative may be pre sent. Weighing of the movable span shall be performed after measurement of end lift reactions has been completed. Spacer plate under the pivot girder can be adjusted at this time if required. Submit Cut Sheets for hydraulic jacks and pressure gauges to the Bridge Engineer for review. Select jack size so that the expected load will register between 6,000 and 8,000 psi. Use 0 -10,000 psi digital pressure gauges with an accuracy of ± 0.25 percent full scale. New gauges shall come with NIST certification. Used g auges shall be newly certified. Use two identical hydraulic jacks with known bore sizes, and locate them under the pivot girder where shown on the plans. Each jack should be connected to a separate power unit. Power units shall be capable of holding the lo ad for the duration of the weighing process without significant leakage of hydraulic fluid. Pressure gauges should be mounted directly to the jacks if possible. Otherwise, pressure gauges shall be located as close to the jacks as practical. Jacks shall be completely free of air before measurement. Retract wedges and raise the span until all load has been removed from the pivot bearing. Allow time for pressure readings to stabilize. Record readings and repeat two more times. Measurements are good if they ar e within 1 percent of each other. Submit pressure readings to the Bridge Engineer for review. Actual span weight shall not differ from the design weight by more than ± 5 percent. If an adjustment needs to be made to the pivot girder elevation during this procedure, remove the existing spacer plate while jacking the span and replace with a single spacer plate machined to the required thickness.
820.09 Construction Require Ments for Vertical L Ift Span
BRIDGES.
820.09.1 Construction of Approach Spans: Approach spans
immedia tely adjacent to the movable span shall not be constructed until “Installation of Bearing Shoes,” 820.09.10 has been completed. Each approach span must match the elevation and profile of the movable span across the entire width of the roadway to within ± 1/8 inch.
820.09.2 Tolerances for Lift Towers: For either concrete or steel to wer
vertical lift bridges, all lines, surfaces, corners, arises, and elements of the lift towers shall be within ± 1/4 inch in any 10 foot section and not more than ± 1/2 inch for the entire length of the tower for towers less than 100 feet and ± 3/4 inch for towers greater than 100 feet of the plan dimension. For concrete lift towers, survey towers after each placement and before any further construction on that leg occurs. If at any point the tower does not meet the required tolerances, submit a contracto r proposal with recommendations for remediation which may include removal and replacement of the tower. For steel lift towers, survey towers continually during construction. If at any point during construction the tower does not meet the required tolerance s, submit a contractor proposal with recommendations for remediation, which may include removal and re -fabrication of structural members.
820.09.3 Installation of Sheave Assemblies (Concrete Towers):
Do not transport sheave assemblies to the project site until it is time to install them in their permanent locations on the sheave pedestals. Sheave assemblies shall come from the shop complete with trunnions, trunnion bearings, and sheave gear installed. Sheave gears shall come from the shop coated with a dry, rust -inhibiting grease. Do not remove this grease until installation of the pinion gear. Retract wedges and raise the span until all load has been removed from the pivot bearing. Allow time for pressure readings to stabilize. Record readings and repeat two more times. Measurements are good if they ar e within 1 percent of each other. Submit pressure readings to the Bridge Engineer for review. Actual span weight shall not differ from the design weight by more than ± 5 percent. If an adjustment needs to be made to the pivot girder elevation during this procedure, remove the existing spacer plate while jacking the span and replace with a single spacer plate machined to the required thickness.
820.09 Construction Require Ments for Vertical L Ift Span
BRIDGES.
820.09.1 Construction of Approach Spans: Approach spans
immedia tely adjacent to the movable span shall not be constructed until “Installation of Bearing Shoes,” 820.09.10 has been completed. Each approach span must match the elevation and profile of the movable span across the entire width of the roadway to within ± 1/8 inch.
820.09.2 Tolerances for Lift Towers: For either concrete or steel to wer
vertical lift bridges, all lines, surfaces, corners, arises, and elements of the lift towers shall be within ± 1/4 inch in any 10 foot section and not more than ± 1/2 inch for the entire length of the tower for towers less than 100 feet and ± 3/4 inch for towers greater than 100 feet of the plan dimension. For concrete lift towers, survey towers after each placement and before any further construction on that leg occurs. If at any point the tower does not meet the required tolerances, submit a contracto r proposal with recommendations for remediation which may include removal and replacement of the tower. For steel lift towers, survey towers continually during construction. If at any point during construction the tower does not meet the required tolerance s, submit a contractor proposal with recommendations for remediation, which may include removal and re -fabrication of structural members.
820.09.3 Installation of Sheave Assemblies (Concrete Towers):
Do not transport sheave assemblies to the project site until it is time to install them in their permanent locations on the sheave pedestals. Sheave assemblies shall come from the shop complete with trunnions, trunnion bearings, and sheave gear installed. Sheave gears shall come from the shop coated with a dry, rust -inhibiting grease. Do not remove this grease until installation of the pinion gear. Retract wedges and raise the span until all load has been removed from the pivot bearing. Allow time for pressure readings to stabilize. Record readings and repeat two more times. Measurements are good if they ar e within 1 percent of each other. Submit pressure readings to the Bridge Engineer for review. Actual span weight shall not differ from the design weight by more than ± 5 percent. If an adjustment needs to be made to the pivot girder elevation during this procedure, remove the existing spacer plate while jacking the span and replace with a single spacer plate machined to the required thickness.
820.09 Construction Require Ments for Vertical L Ift Span
BRIDGES.
820.09.1 Construction of Approach Spans: Approach spans
immedia tely adjacent to the movable span shall not be constructed until “Installation of Bearing Shoes,” 820.09.10 has been completed. Each approach span must match the elevation and profile of the movable span across the entire width of the roadway to within ± 1/8 inch.
820.09.2 Tolerances for Lift Towers: For either concrete or steel to wer
vertical lift bridges, all lines, surfaces, corners, arises, and elements of the lift towers shall be within ± 1/4 inch in any 10 foot section and not more than ± 1/2 inch for the entire length of the tower for towers less than 100 feet and ± 3/4 inch for towers greater than 100 feet of the plan dimension. For concrete lift towers, survey towers after each placement and before any further construction on that leg occurs. If at any point the tower does not meet the required tolerances, submit a contracto r proposal with recommendations for remediation which may include removal and replacement of the tower. For steel lift towers, survey towers continually during construction. If at any point during construction the tower does not meet the required tolerance s, submit a contractor proposal with recommendations for remediation, which may include removal and re -fabrication of structural members.
820.09.3 Installation of Sheave Assemblies (Concrete Towers):
Do not transport sheave assemblies to the project site until it is time to install them in their permanent locations on the sheave pedestals. Sheave assemblies shall come from the shop complete with trunnions, trunnion bearings, and sheave gear installed. Sheave gears shall come from the shop coated with a dry, rust -inhibiting grease. Do not remove this grease until installation of the pinion gear. Retract wedges and raise the span until all load has been removed from the pivot bearing. Allow time for pressure readings to stabilize. Record readings and repeat two more times. Measurements are good if they ar e within 1 percent of each other. Submit pressure readings to the Bridge Engineer for review. Actual span weight shall not differ from the design weight by more than ± 5 percent. If an adjustment needs to be made to the pivot girder elevation during this procedure, remove the existing spacer plate while jacking the span and replace with a single spacer plate machined to the required thickness.
820.09 Construction Require Ments for Vertical L Ift Span
BRIDGES.
820.09.1 Construction of Approach Spans: Approach spans
immedia tely adjacent to the movable span shall not be constructed until “Installation of Bearing Shoes,” 820.09.10 has been completed. Each approach span must match the elevation and profile of the movable span across the entire width of the roadway to within ± 1/8 inch.
820.09.2 Tolerances for Lift Towers: For either concrete or steel to wer
vertical lift bridges, all lines, surfaces, corners, arises, and elements of the lift towers shall be within ± 1/4 inch in any 10 foot section and not more than ± 1/2 inch for the entire length of the tower for towers less than 100 feet and ± 3/4 inch for towers greater than 100 feet of the plan dimension. For concrete lift towers, survey towers after each placement and before any further construction on that leg occurs. If at any point the tower does not meet the required tolerances, submit a contracto r proposal with recommendations for remediation which may include removal and replacement of the tower. For steel lift towers, survey towers continually during construction. If at any point during construction the tower does not meet the required tolerance s, submit a contractor proposal with recommendations for remediation, which may include removal and re -fabrication of structural members.
820.09.3 Installation of Sheave Assemblies (Concrete Towers):
Do not transport sheave assemblies to the project site until it is time to install them in their permanent locations on the sheave pedestals. Sheave assemblies shall come from the shop complete with trunnions, trunnion bearings, and sheave gear installed. Sheave gears shall come from the shop coated with a dry, rust -inhibiting grease. Do not remove this grease until installation of the pinion gear. Retract wedges and raise the span until all load has been removed from the pivot bearing. Allow time for pressure readings to stabilize. Record readings and repeat two more times. Measurements are good if they ar e within 1 percent of each other. Submit pressure readings to the Bridge Engineer for review. Actual span weight shall not differ from the design weight by more than ± 5 percent. If an adjustment needs to be made to the pivot girder elevation during this procedure, remove the existing spacer plate while jacking the span and replace with a single spacer plate machined to the required thickness.
820.09 Construction Require Ments for Vertical L Ift Span
BRIDGES.
820.09.1 Construction of Approach Spans: Approach spans
immedia tely adjacent to the movable span shall not be constructed until “Installation of Bearing Shoes,” 820.09.10 has been completed. Each approach span must match the elevation and profile of the movable span across the entire width of the roadway to within ± 1/8 inch.
820.09.2 Tolerances for Lift Towers: For either concrete or steel to wer
vertical lift bridges, all lines, surfaces, corners, arises, and elements of the lift towers shall be within ± 1/4 inch in any 10 foot section and not more than ± 1/2 inch for the entire length of the tower for towers less than 100 feet and ± 3/4 inch for towers greater than 100 feet of the plan dimension. For concrete lift towers, survey towers after each placement and before any further construction on that leg occurs. If at any point the tower does not meet the required tolerances, submit a contracto r proposal with recommendations for remediation which may include removal and replacement of the tower. For steel lift towers, survey towers continually during construction. If at any point during construction the tower does not meet the required tolerance s, submit a contractor proposal with recommendations for remediation, which may include removal and re -fabrication of structural members.
820.09.3 Installation of Sheave Assemblies (Concrete Towers):
Do not transport sheave assemblies to the project site until it is time to install them in their permanent locations on the sheave pedestals. Sheave assemblies shall come from the shop complete with trunnions, trunnion bearings, and sheave gear installed. Sheave gears shall come from the shop coated with a dry, rust -inhibiting grease. Do not remove this grease until installation of the pinion gear.
1.Installation of Anchor Bolts: Cast in place anchor bolts for the sheave pedestals with an embedded template as shown on the plans. Use survey equipment to locate templates horizontally and vertically. All four templates must be square to each other and at the same elevation ±1/2 inch. No individual anchor bolt can be located more than 1/2 inches from its specified location in all directions. Anchor bolts shall be vertical to within 0.5 degrees. Securely anchor template and monitor template locations while the concrete deck is placed and vibrated to assure no movement.
2.Installation of Sheave Pedestals: After both machinery decks have met the requirements for form removal, sur vey the elevations of all four sheave locations to determine the highest location. Place the first sheave pedestal at this location. Using the leveling screws provided, set the elevation of the top of the sheave pedestal to ±1/16 inch of the design elevati on. Adjust pedestal elevation, if needed, to allow for a minimum 2 -inch grout pad. Level pedestal in all directions with a machinist’s level. Install remaining three sheave pedestals, and adjust the elevations of these pedestals to match the elevation of t he first pedestal. This should require these pedestals to have a grout pad greater than 2 inches. Level all pedestals with a machinist’s level. The Project Engineer will verify all pedestal elevations. Submit elevations to the Bridge Engineer for review. A ll elevations shall be accurate to within ±1/16 inch. Coat leveling screws with lubricant to prevent adhesion of grout. Form up and grout under the sheave pedestals as shown on the plans using a pre -packaged non - shrink epoxy grout with a minimum seven day compressive strength of 13,000 psi. Mix grout to be flowable and self -leveling. Install in accordance with the grout manufacturer’s instructions to achieve 95 percent minimum bearing contact area with the base plate of the sheave pedestal. Pour grout from one side of the form to prevent air from being trapped under the sheave pedestal. Packing grout under sheave pedestal is not allowed. Allow grout to cure for a minimum of 48 hours or as recommended by the grout manufacturer before tightening anchor bolts a nd removing forms. Back off leveling screws and lock in place with jam nuts.
3.Alignment of Sheave Assemblies: Submit to the Bridge Engineer for review the means and methods for alignment and survey of sheaves. Place sheave assemblies on sheave pedestals. Use survey equipment to position sheave assemblies relative to specified control dimensions. After positionin g sheaves, but prior to installing turned bolts/fitted pins in the trunnion bearings, submit survey data to the Bridge Engineer for review. Submitted data shall show the following:
a.Sheaves on opposite towers are parallel and in the same plane.
b.Trunnions of sheaves on the same tower are aligned vertically and horizontally.
c.Sheaves on the same tower are the correct distance apart and the correct distance from the centerline of the bridge.
d.Sheaves on opposite towers are the correct distance apart and the corre ct distance from the centerline of the channel.
e.The diagonal distances between the sheaves are equal. All distances shall be accurate to within ± 1/8 inch. After review of the data, a representative of the EOR will schedule a site visit to verify sheave pl acement. Be prepared to demonstrate the submitted data with survey equipment and other measurement devices. After sheave placement has been verified, install turned bolts/fitted pins in trunnion bearings.
4.Determination of Maximum Gear Runout: Prior to ins talling the counterweight wire ropes, determine the maximum and minimum gear runout on each sheave. Record this data and submit to the Bridge Engineer for review. Mark the tooth with the maximum runout and lock the sheave such that the tooth with the maxim um runout is aligned with the future placement of the pinion gear.
5.Clean Sheave Assemblies and Apply Touch -up Paint: Immediately after completing the installation of the sheave assemblies, clean sheave assemblies and pedestals, and touch up paint where da maged. Do not remove the protective grease from or paint the face of the sheave gear teeth.
820.09.4 Installation of Sheave Assemblies (Steel Towers): Use the
same installation procedure as 820.09.3 “Installation of Sheave Assemblies (Concrete Towers)” except as follows:
1.Installation of Sheave Pedestals : Survey area of machine ry deck where sheave pedestals will be located. Machinery deck plate steel must be flat to within ±1/16 inch in all locations under the pedestals. Project Engineer must verify flatness measurements. Install all four sheave pedestals. Use survey equipment t o determine the elevation of the top of each sheave pedestal. Project Engineer must verify elevation measurements. Calculate the thickness for a single spacer plate on each sheave pedestal (eight plates) to bring the sheave pedestal elevations to the desig n elevation. Submit shop drawings for the spacer plates to the Bridge Engineer for review. Shop drawings shall show current pedestal elevations. After completing the review process, fabricate and install spacer plates. Re -survey sheave pedestal elevations and submit the data to the Bridge Engineer for review. All final elevations shall be within ± 1/16 inch of the design elevations.
820.09.5 Construction of Counterweight (Vertical Lift): Construct the
counterweights in accordance with the plans and 820.07.6 , “Construction of
b.Trunnions of sheaves on the same tower are aligned vertically and horizontally.
c.Sheaves on the same tower are the correct distance apart and the correct distance from the centerline of the bridge.
d.Sheaves on opposite towers are the correct distance apart and the corre ct distance from the centerline of the channel.
e.The diagonal distances between the sheaves are equal. All distances shall be accurate to within ± 1/8 inch. After review of the data, a representative of the EOR will schedule a site visit to verify sheave pl acement. Be prepared to demonstrate the submitted data with survey equipment and other measurement devices. After sheave placement has been verified, install turned bolts/fitted pins in trunnion bearings.
4.Determination of Maximum Gear Runout: Prior to ins talling the counterweight wire ropes, determine the maximum and minimum gear runout on each sheave. Record this data and submit to the Bridge Engineer for review. Mark the tooth with the maximum runout and lock the sheave such that the tooth with the maxim um runout is aligned with the future placement of the pinion gear.
5.Clean Sheave Assemblies and Apply Touch -up Paint: Immediately after completing the installation of the sheave assemblies, clean sheave assemblies and pedestals, and touch up paint where da maged. Do not remove the protective grease from or paint the face of the sheave gear teeth.
820.09.4 Installation of Sheave Assemblies (Steel Towers): Use the
same installation procedure as 820.09.3 “Installation of Sheave Assemblies (Concrete Towers)” except as follows:
1.Installation of Sheave Pedestals : Survey area of machine ry deck where sheave pedestals will be located. Machinery deck plate steel must be flat to within ±1/16 inch in all locations under the pedestals. Project Engineer must verify flatness measurements. Install all four sheave pedestals. Use survey equipment t o determine the elevation of the top of each sheave pedestal. Project Engineer must verify elevation measurements. Calculate the thickness for a single spacer plate on each sheave pedestal (eight plates) to bring the sheave pedestal elevations to the desig n elevation. Submit shop drawings for the spacer plates to the Bridge Engineer for review. Shop drawings shall show current pedestal elevations. After completing the review process, fabricate and install spacer plates. Re -survey sheave pedestal elevations and submit the data to the Bridge Engineer for review. All final elevations shall be within ± 1/16 inch of the design elevations.
820.09.5 Construction of Counterweight (Vertical Lift): Construct the
counterweights in accordance with the plans and 820.07.6 , “Construction of
b.Trunnions of sheaves on the same tower are aligned vertically and horizontally.
c.Sheaves on the same tower are the correct distance apart and the correct distance from the centerline of the bridge.
d.Sheaves on opposite towers are the correct distance apart and the corre ct distance from the centerline of the channel.
e.The diagonal distances between the sheaves are equal. All distances shall be accurate to within ± 1/8 inch. After review of the data, a representative of the EOR will schedule a site visit to verify sheave pl acement. Be prepared to demonstrate the submitted data with survey equipment and other measurement devices. After sheave placement has been verified, install turned bolts/fitted pins in trunnion bearings.
4.Determination of Maximum Gear Runout: Prior to ins talling the counterweight wire ropes, determine the maximum and minimum gear runout on each sheave. Record this data and submit to the Bridge Engineer for review. Mark the tooth with the maximum runout and lock the sheave such that the tooth with the maxim um runout is aligned with the future placement of the pinion gear.
5.Clean Sheave Assemblies and Apply Touch -up Paint: Immediately after completing the installation of the sheave assemblies, clean sheave assemblies and pedestals, and touch up paint where da maged. Do not remove the protective grease from or paint the face of the sheave gear teeth.
820.09.4 Installation of Sheave Assemblies (Steel Towers): Use the
same installation procedure as 820.09.3 “Installation of Sheave Assemblies (Concrete Towers)” except as follows:
1.Installation of Sheave Pedestals : Survey area of machine ry deck where sheave pedestals will be located. Machinery deck plate steel must be flat to within ±1/16 inch in all locations under the pedestals. Project Engineer must verify flatness measurements. Install all four sheave pedestals. Use survey equipment t o determine the elevation of the top of each sheave pedestal. Project Engineer must verify elevation measurements. Calculate the thickness for a single spacer plate on each sheave pedestal (eight plates) to bring the sheave pedestal elevations to the desig n elevation. Submit shop drawings for the spacer plates to the Bridge Engineer for review. Shop drawings shall show current pedestal elevations. After completing the review process, fabricate and install spacer plates. Re -survey sheave pedestal elevations and submit the data to the Bridge Engineer for review. All final elevations shall be within ± 1/16 inch of the design elevations.
820.09.5 Construction of Counterweight (Vertical Lift): Construct the
counterweights in accordance with the plans and 820.07.6 , “Construction of Counterweight.” Construct forms and place the counterweight concrete. Remove forms after the counterweight has met requirements for form removal.
820.09.6 Installation of Counterweight Wire Ropes (Vertical Lift):
At all times during the installation process, handle counterweight wire ropes (CWR’s) in accord ance with the wire rope manufacturer’s recommendations. Kinks in the CWR’s will be cause for rejection. Orient CWR’s on the sheave as shown on the plans and without twisting.
1.Alignment of Counterweight Wire Ropes: After all CWR’s have been placed on th e sheave and attached to both the counterweight and the movable span lift girder, adjust threaded rods on the span sockets such that the tops of all shims are level, but not bearing on the steel frame as shown on the plans. If sockets are painted, clean so ckets and apply an additional top coat of paint to all sockets after completing installation. Complete construction of the movable span including the concrete/grid roadway deck, sidewalks, and traffic barriers, and all mechanical items such as the span loc k catches, buffers, and bearing feet.
2.Initial Tensioning of Counterweight Wire Ropes: Prepare and submit to the Bridge Engineer for review a method for measuring the tension in the wire ropes. Notify the Bridge Engineer 14 calendar days prior to tensioning of the CWR’s so the EOR or a designated representative may be present. After the mo vable span is fully constructed, measure and adjust the tension in the CWR’s until they are within ± 8 percent of each other. Prepare a report describing the measurement method and all measurement data. Submit the report to the Bridge Engineer for review.
820.09.7 Installation of Span Drive Machinery and Pinion Gears.
(Vertical Lift): Install the span drive machinery on the machinery deck as shown on the plans. All machinery shall be installed by a millwright and shall be aligned to within tolerances shown on the plans and industry standards for equipment of this type, whichever is more stringent. Do not begin to install span drive machinery until the movable span nears completion. Turned bolts/fitted pins for pinion shaft bearings shall not be installed until the sheave is fully loaded with the weight of the completed movable span and counterweight. Counterweight.” Construct forms and place the counterweight concrete. Remove forms after the counterweight has met requirements for form removal.
820.09.6 Installation of Counterweight Wire Ropes (Vertical Lift):
At all times during the installation process, handle counterweight wire ropes (CWR’s) in accord ance with the wire rope manufacturer’s recommendations. Kinks in the CWR’s will be cause for rejection. Orient CWR’s on the sheave as shown on the plans and without twisting.
1.Alignment of Counterweight Wire Ropes: After all CWR’s have been placed on th e sheave and attached to both the counterweight and the movable span lift girder, adjust threaded rods on the span sockets such that the tops of all shims are level, but not bearing on the steel frame as shown on the plans. If sockets are painted, clean so ckets and apply an additional top coat of paint to all sockets after completing installation. Complete construction of the movable span including the concrete/grid roadway deck, sidewalks, and traffic barriers, and all mechanical items such as the span loc k catches, buffers, and bearing feet.
2.Initial Tensioning of Counterweight Wire Ropes: Prepare and submit to the Bridge Engineer for review a method for measuring the tension in the wire ropes. Notify the Bridge Engineer 14 calendar days prior to tensioning of the CWR’s so the EOR or a designated representative may be present. After the mo vable span is fully constructed, measure and adjust the tension in the CWR’s until they are within ± 8 percent of each other. Prepare a report describing the measurement method and all measurement data. Submit the report to the Bridge Engineer for review.
820.09.7 Installation of Span Drive Machinery and Pinion Gears.
(Vertical Lift): Install the span drive machinery on the machinery deck as shown on the plans. All machinery shall be installed by a millwright and shall be aligned to within tolerances shown on the plans and industry standards for equipment of this type, whichever is more stringent. Do not begin to install span drive machinery until the movable span nears completion. Turned bolts/fitted pins for pinion shaft bearings shall not be installed until the sheave is fully loaded with the weight of the completed movable span and counterweight. Counterweight.” Construct forms and place the counterweight concrete. Remove forms after the counterweight has met requirements for form removal.
820.09.6 Installation of Counterweight Wire Ropes (Vertical Lift):
At all times during the installation process, handle counterweight wire ropes (CWR’s) in accord ance with the wire rope manufacturer’s recommendations. Kinks in the CWR’s will be cause for rejection. Orient CWR’s on the sheave as shown on the plans and without twisting.
1.Alignment of Counterweight Wire Ropes: After all CWR’s have been placed on th e sheave and attached to both the counterweight and the movable span lift girder, adjust threaded rods on the span sockets such that the tops of all shims are level, but not bearing on the steel frame as shown on the plans. If sockets are painted, clean so ckets and apply an additional top coat of paint to all sockets after completing installation. Complete construction of the movable span including the concrete/grid roadway deck, sidewalks, and traffic barriers, and all mechanical items such as the span loc k catches, buffers, and bearing feet.
2.Initial Tensioning of Counterweight Wire Ropes: Prepare and submit to the Bridge Engineer for review a method for measuring the tension in the wire ropes. Notify the Bridge Engineer 14 calendar days prior to tensioning of the CWR’s so the EOR or a designated representative may be present. After the mo vable span is fully constructed, measure and adjust the tension in the CWR’s until they are within ± 8 percent of each other. Prepare a report describing the measurement method and all measurement data. Submit the report to the Bridge Engineer for review.
820.09.7 Installation of Span Drive Machinery and Pinion Gears.
(Vertical Lift): Install the span drive machinery on the machinery deck as shown on the plans. All machinery shall be installed by a millwright and shall be aligned to within tolerances shown on the plans and industry standards for equipment of this type, whichever is more stringent. Do not begin to install span drive machinery until the movable span nears completion. Turned bolts/fitted pins for pinion shaft bearings shall not be installed until the sheave is fully loaded with the weight of the completed movable span and counterweight.
1.Installation of Span Drive Machinery: Sheaves should still be locked in position, and the sheave gear teeth with the maximum runout should still be in position to mat e with the pinion gears. Without removing the protective grease on the pinion gear or the sheave gear that was applied in the shop, perform a preliminary alignment of the pinion gears. Locate and install the span drive machinery base by aligning with the p inion shafts. Span drive machinery base and pillow block bearing supports shall be installed as shown on the plans, and in a similar method as the sheave pedestals. Install all span drive machinery. Fully lubricate all bearings, gearboxes, couplings, and s eals.
2.Alignment of Pinion Gears: After the sheave has the full load of the completed movable span and counterweight, remove the protective grease from the pinion and sheave gears. Fully align the pinion gear so that the backlash is near the lower end of t he range shown on the plans. Backlash at each end of a tooth shall be equal. Install undersized bolts, and use chock blocks as shown on the plans to fix the pinion bearings in place. Do not install turned bolts/fitted pins at this time. Apply non -drying ge ar bluing compound to the entire sheave gear. Unlock sheave, rotate one full revolution, and inspect tooth contact. For acceptable gear contact, 80 percent of the teeth shall have 80 percent contact along the face of the teeth, and no teeth shall have less than 50 percent contact. If tooth contact does not meet this requirement, adjust pinion alignment and retest. Repeat until gear alignment meets both the backlash and tooth contact requirements. Record all backlash measurements (all sheaves and both ends o f the teeth) and take pictures of the tooth contact. Pictures shall show teeth with best contact and worst contact. Submit data to the Bridge Engineer for review.
2.Site Inspection to Check Pinion Gear Alignment: Provide a 14 calendar day notice to the Brid ge Engineer to schedule a site inspection to verify pinion gear alignment. At site inspection, repeat tooth contact test on all four pinion gears and demonstrate backlash measurements with feeler gauges.
3.Installation of Turned Bolts/Fitted Pins: Once gear alignment has been verified, install turned bolts/fitted pins in the pinion bearings as shown on the plans.
4.Clean Sheave Assemblies, Paint, and Lubricate: After installing fitted pins, thoroughly clean entire sheave assembly, including all gear teeth and sheave pedestals. Complete the mechanical paint system. Do not paint the face of gear teeth. After the paint has dried, apply the specified gear grease to the sheave and pinion gears.
820.09.8 Weighing of Counterweight and Movable Span (Vertical
Lift): After th e turned bolts/fitted pins have been installed in the pinion bearings, use the following procedure to weigh the counterweight and the movable span or submit an alternate method to the Bridge Engineer for review. Notify the Bridge
1.Installation of Span Drive Machinery: Sheaves should still be locked in position, and the sheave gear teeth with the maximum runout should still be in position to mat e with the pinion gears. Without removing the protective grease on the pinion gear or the sheave gear that was applied in the shop, perform a preliminary alignment of the pinion gears. Locate and install the span drive machinery base by aligning with the p inion shafts. Span drive machinery base and pillow block bearing supports shall be installed as shown on the plans, and in a similar method as the sheave pedestals. Install all span drive machinery. Fully lubricate all bearings, gearboxes, couplings, and s eals.
2.Alignment of Pinion Gears: After the sheave has the full load of the completed movable span and counterweight, remove the protective grease from the pinion and sheave gears. Fully align the pinion gear so that the backlash is near the lower end of t he range shown on the plans. Backlash at each end of a tooth shall be equal. Install undersized bolts, and use chock blocks as shown on the plans to fix the pinion bearings in place. Do not install turned bolts/fitted pins at this time. Apply non -drying ge ar bluing compound to the entire sheave gear. Unlock sheave, rotate one full revolution, and inspect tooth contact. For acceptable gear contact, 80 percent of the teeth shall have 80 percent contact along the face of the teeth, and no teeth shall have less than 50 percent contact. If tooth contact does not meet this requirement, adjust pinion alignment and retest. Repeat until gear alignment meets both the backlash and tooth contact requirements. Record all backlash measurements (all sheaves and both ends o f the teeth) and take pictures of the tooth contact. Pictures shall show teeth with best contact and worst contact. Submit data to the Bridge Engineer for review.
2.Site Inspection to Check Pinion Gear Alignment: Provide a 14 calendar day notice to the Brid ge Engineer to schedule a site inspection to verify pinion gear alignment. At site inspection, repeat tooth contact test on all four pinion gears and demonstrate backlash measurements with feeler gauges.
3.Installation of Turned Bolts/Fitted Pins: Once gear alignment has been verified, install turned bolts/fitted pins in the pinion bearings as shown on the plans.
4.Clean Sheave Assemblies, Paint, and Lubricate: After installing fitted pins, thoroughly clean entire sheave assembly, including all gear teeth and sheave pedestals. Complete the mechanical paint system. Do not paint the face of gear teeth. After the paint has dried, apply the specified gear grease to the sheave and pinion gears.
820.09.8 Weighing of Counterweight and Movable Span (Vertical
Lift): After th e turned bolts/fitted pins have been installed in the pinion bearings, use the following procedure to weigh the counterweight and the movable span or submit an alternate method to the Bridge Engineer for review. Notify the Bridge Engineer 14 calendar days prior to weighing the counterweight and the movable span so the EOR or a designated representative may be present. Weighing of the counterweight and movable span shall be performed after construction of both is fully complete. Submit cut sheets for hydraul ic jacks and pressure gauges to the Bridge Engineer for review. Select jack size so that the expected load will register between 6,000 and 8,000 psi. Use 0 -10,000 psi digital pressure gauges with an accuracy of ± 0.25 percent full scale. New gauges shall c ome with N.I.S.T. certification. Used gauges shall be newly certified.
1.Weigh Counterweight: Jack counterweight using the jacking frame shown on the plans. Use four identical hydraulic jacks with known bore sizes. Connect each pair of jacks to a separate p ower unit. Power units shall be capable of holding the load for the duration of the weighing process without leakage of hydraulic fluid. Each jack shall have its own pressure gauge, and the gauge should be mounted directly to the jack if possible. Otherwis e, locate pressure gauges as close to the jacks as possible. Jacks shall be completely free of air before measurement. Jack counterweight until all tension is removed from the counterweight wire ropes. Allow time for pressure readings to stabilize. Record readings and repeat two more times. Measurements are acceptable if they are within one percent of each other. Submit pressure readings to the Bridge Engineer for review.
2.Weigh Movable Span: Weigh the movable span with the counterweight suspended from the t owers by the jacking rods. Place jacks at each corner of the movable span as shown on the plans. Use four identical hydraulic jacks with known bore sizes. Connect each jack to a separate power unit. Power units shall be capable of holding the load for the duration of the weighing process without leakage of hydraulic fluid. Each jack shall have its own pressure gauge, and the gauge should be mounted directly to the jack if possible. Otherwise, locate pressure gauges as close to the jacks as possible. Jacks m ust be completely free of air before measurement. Jack all four corners of the movable span until there is a minimum of 1/4 inch of separation from the bearing shoes. All four corners must be jacked the same height. Allow time for pressure readings to stab ilize. Record readings and repeat two more times. Measurements are acceptable if they are within one percent of each other. Submit pressure readings to the Bridge Engineer for review. Actual span weight shall not vary from the design weight by more than ± 5 percent.
820.09.9 Balance Movable Span (Vertical Lift): Using the weights
measured for the movable span and the counterweight, adjust the balance blocks so that the movable span is 1,500 pounds span heavy per corner. This is a starting Engineer 14 calendar days prior to weighing the counterweight and the movable span so the EOR or a designated representative may be present. Weighing of the counterweight and movable span shall be performed after construction of both is fully complete. Submit cut sheets for hydraul ic jacks and pressure gauges to the Bridge Engineer for review. Select jack size so that the expected load will register between 6,000 and 8,000 psi. Use 0 -10,000 psi digital pressure gauges with an accuracy of ± 0.25 percent full scale. New gauges shall c ome with N.I.S.T. certification. Used gauges shall be newly certified.
1.Weigh Counterweight: Jack counterweight using the jacking frame shown on the plans. Use four identical hydraulic jacks with known bore sizes. Connect each pair of jacks to a separate p ower unit. Power units shall be capable of holding the load for the duration of the weighing process without leakage of hydraulic fluid. Each jack shall have its own pressure gauge, and the gauge should be mounted directly to the jack if possible. Otherwis e, locate pressure gauges as close to the jacks as possible. Jacks shall be completely free of air before measurement. Jack counterweight until all tension is removed from the counterweight wire ropes. Allow time for pressure readings to stabilize. Record readings and repeat two more times. Measurements are acceptable if they are within one percent of each other. Submit pressure readings to the Bridge Engineer for review.
2.Weigh Movable Span: Weigh the movable span with the counterweight suspended from the t owers by the jacking rods. Place jacks at each corner of the movable span as shown on the plans. Use four identical hydraulic jacks with known bore sizes. Connect each jack to a separate power unit. Power units shall be capable of holding the load for the duration of the weighing process without leakage of hydraulic fluid. Each jack shall have its own pressure gauge, and the gauge should be mounted directly to the jack if possible. Otherwise, locate pressure gauges as close to the jacks as possible. Jacks m ust be completely free of air before measurement. Jack all four corners of the movable span until there is a minimum of 1/4 inch of separation from the bearing shoes. All four corners must be jacked the same height. Allow time for pressure readings to stab ilize. Record readings and repeat two more times. Measurements are acceptable if they are within one percent of each other. Submit pressure readings to the Bridge Engineer for review. Actual span weight shall not vary from the design weight by more than ± 5 percent.
820.09.9 Balance Movable Span (Vertical Lift): Using the weights
measured for the movable span and the counterweight, adjust the balance blocks so that the movable span is 1,500 pounds span heavy per corner. This is a starting point. Further adjustments to the span balance may need to be made to achieve proper performance. Maintain a record of all balance block adjustments.
820.09.10 Installation of Bearing Shoes (Vertical Lift): Lower the
movable span so that the bearing feet contact the main piers. Mark location for bearing shoes on the main pier, and drill in place anchor bolts as shown on the plans. Use a template to space anchor bolts and to hold anchor bolts vertical. Using a non -shrink epoxy grout, form up and install grout pads under bearing s hoes as shown on the plans, and in a similar manner as for the sheave pedestals, level bearing shoes with a machinist level. Bearing shoe elevations shall be accurate to within ± 1/16 inch. Entire length of bearing feet shall contact the bearing shoes. Grind bearing feet and repaint as required.
820.09.11 Installation of Span and Counterweight Guide Rails
(Vertical Lift): Install span and counterweight guide rails as shown on the plans. Guide rails shall be vertical to within ± 1/8 inch along the entire length of the rail. Guide rail splices shall mate flush. Roller guides shall not ride on guide rails during operation when there is no wind.
820.09.12 Installation of Span Locks (Vertical Lift): Span lock catch
shall have already been installed on the movable span. Locate span lock base and drill in place anchor bolts as shown on the plans. Use a template to space anchor bolts and to hold anchor bolts vertical. Using an epoxy grout from the Approved Materials List, form up and install grout pads under span lock bases as sho wn on the plans, and in a similar manner as the sheave pedestals. Level span lock bases with a machinist level. Span lock base elevations shall be accurate to within ± 1/16 inch. Locate span lock on base such that the center of the latch, when extended, is over the center of the catch when the latch is horizontal. Shim span lock so that there is a 1/16 -inch gap between the latch and the catch when the latch is extended. Adjust limit switches so that the span lock latch is fully inside the enclosure when retracted and horizontal when extended.
820.09.13 Installation of Air Buffers (Vertical Lift): Install air buffers
as shown on the plans and thoroughly lubricate. Provide air pressure gauges (0 - 300psi) and install in place of the oilers. Operate span and adjust air valves until the span seats gently and all buffers see approximately the same maximum pressure. This should be between 75 and 100 psi. Be prepared to demonstrate pressure settings during final setup and inspection, and have personnel and tools available to make additional adjustments at that time. After air buffer operation has been accepted, match mark the air valve position and install oilers. point. Further adjustments to the span balance may need to be made to achieve proper performance. Maintain a record of all balance block adjustments.
820.09.10 Installation of Bearing Shoes (Vertical Lift): Lower the
movable span so that the bearing feet contact the main piers. Mark location for bearing shoes on the main pier, and drill in place anchor bolts as shown on the plans. Use a template to space anchor bolts and to hold anchor bolts vertical. Using a non -shrink epoxy grout, form up and install grout pads under bearing s hoes as shown on the plans, and in a similar manner as for the sheave pedestals, level bearing shoes with a machinist level. Bearing shoe elevations shall be accurate to within ± 1/16 inch. Entire length of bearing feet shall contact the bearing shoes. Grind bearing feet and repaint as required.
820.09.11 Installation of Span and Counterweight Guide Rails
(Vertical Lift): Install span and counterweight guide rails as shown on the plans. Guide rails shall be vertical to within ± 1/8 inch along the entire length of the rail. Guide rail splices shall mate flush. Roller guides shall not ride on guide rails during operation when there is no wind.
820.09.12 Installation of Span Locks (Vertical Lift): Span lock catch
shall have already been installed on the movable span. Locate span lock base and drill in place anchor bolts as shown on the plans. Use a template to space anchor bolts and to hold anchor bolts vertical. Using an epoxy grout from the Approved Materials List, form up and install grout pads under span lock bases as sho wn on the plans, and in a similar manner as the sheave pedestals. Level span lock bases with a machinist level. Span lock base elevations shall be accurate to within ± 1/16 inch. Locate span lock on base such that the center of the latch, when extended, is over the center of the catch when the latch is horizontal. Shim span lock so that there is a 1/16 -inch gap between the latch and the catch when the latch is extended. Adjust limit switches so that the span lock latch is fully inside the enclosure when retracted and horizontal when extended.
820.09.13 Installation of Air Buffers (Vertical Lift): Install air buffers
as shown on the plans and thoroughly lubricate. Provide air pressure gauges (0 - 300psi) and install in place of the oilers. Operate span and adjust air valves until the span seats gently and all buffers see approximately the same maximum pressure. This should be between 75 and 100 psi. Be prepared to demonstrate pressure settings during final setup and inspection, and have personnel and tools available to make additional adjustments at that time. After air buffer operation has been accepted, match mark the air valve position and install oilers. point. Further adjustments to the span balance may need to be made to achieve proper performance. Maintain a record of all balance block adjustments.
820.09.10 Installation of Bearing Shoes (Vertical Lift): Lower the
movable span so that the bearing feet contact the main piers. Mark location for bearing shoes on the main pier, and drill in place anchor bolts as shown on the plans. Use a template to space anchor bolts and to hold anchor bolts vertical. Using a non -shrink epoxy grout, form up and install grout pads under bearing s hoes as shown on the plans, and in a similar manner as for the sheave pedestals, level bearing shoes with a machinist level. Bearing shoe elevations shall be accurate to within ± 1/16 inch. Entire length of bearing feet shall contact the bearing shoes. Grind bearing feet and repaint as required.
820.09.11 Installation of Span and Counterweight Guide Rails
(Vertical Lift): Install span and counterweight guide rails as shown on the plans. Guide rails shall be vertical to within ± 1/8 inch along the entire length of the rail. Guide rail splices shall mate flush. Roller guides shall not ride on guide rails during operation when there is no wind.
820.09.12 Installation of Span Locks (Vertical Lift): Span lock catch
shall have already been installed on the movable span. Locate span lock base and drill in place anchor bolts as shown on the plans. Use a template to space anchor bolts and to hold anchor bolts vertical. Using an epoxy grout from the Approved Materials List, form up and install grout pads under span lock bases as sho wn on the plans, and in a similar manner as the sheave pedestals. Level span lock bases with a machinist level. Span lock base elevations shall be accurate to within ± 1/16 inch. Locate span lock on base such that the center of the latch, when extended, is over the center of the catch when the latch is horizontal. Shim span lock so that there is a 1/16 -inch gap between the latch and the catch when the latch is extended. Adjust limit switches so that the span lock latch is fully inside the enclosure when retracted and horizontal when extended.
820.09.13 Installation of Air Buffers (Vertical Lift): Install air buffers
as shown on the plans and thoroughly lubricate. Provide air pressure gauges (0 - 300psi) and install in place of the oilers. Operate span and adjust air valves until the span seats gently and all buffers see approximately the same maximum pressure. This should be between 75 and 100 psi. Be prepared to demonstrate pressure settings during final setup and inspection, and have personnel and tools available to make additional adjustments at that time. After air buffer operation has been accepted, match mark the air valve position and install oilers. point. Further adjustments to the span balance may need to be made to achieve proper performance. Maintain a record of all balance block adjustments.
820.09.10 Installation of Bearing Shoes (Vertical Lift): Lower the
movable span so that the bearing feet contact the main piers. Mark location for bearing shoes on the main pier, and drill in place anchor bolts as shown on the plans. Use a template to space anchor bolts and to hold anchor bolts vertical. Using a non -shrink epoxy grout, form up and install grout pads under bearing s hoes as shown on the plans, and in a similar manner as for the sheave pedestals, level bearing shoes with a machinist level. Bearing shoe elevations shall be accurate to within ± 1/16 inch. Entire length of bearing feet shall contact the bearing shoes. Grind bearing feet and repaint as required.
820.09.11 Installation of Span and Counterweight Guide Rails
(Vertical Lift): Install span and counterweight guide rails as shown on the plans. Guide rails shall be vertical to within ± 1/8 inch along the entire length of the rail. Guide rail splices shall mate flush. Roller guides shall not ride on guide rails during operation when there is no wind.
820.09.12 Installation of Span Locks (Vertical Lift): Span lock catch
shall have already been installed on the movable span. Locate span lock base and drill in place anchor bolts as shown on the plans. Use a template to space anchor bolts and to hold anchor bolts vertical. Using an epoxy grout from the Approved Materials List, form up and install grout pads under span lock bases as sho wn on the plans, and in a similar manner as the sheave pedestals. Level span lock bases with a machinist level. Span lock base elevations shall be accurate to within ± 1/16 inch. Locate span lock on base such that the center of the latch, when extended, is over the center of the catch when the latch is horizontal. Shim span lock so that there is a 1/16 -inch gap between the latch and the catch when the latch is extended. Adjust limit switches so that the span lock latch is fully inside the enclosure when retracted and horizontal when extended.
820.09.13 Installation of Air Buffers (Vertical Lift): Install air buffers
as shown on the plans and thoroughly lubricate. Provide air pressure gauges (0 - 300psi) and install in place of the oilers. Operate span and adjust air valves until the span seats gently and all buffers see approximately the same maximum pressure. This should be between 75 and 100 psi. Be prepared to demonstrate pressure settings during final setup and inspection, and have personnel and tools available to make additional adjustments at that time. After air buffer operation has been accepted, match mark the air valve position and install oilers. point. Further adjustments to the span balance may need to be made to achieve proper performance. Maintain a record of all balance block adjustments.
820.09.10 Installation of Bearing Shoes (Vertical Lift): Lower the
movable span so that the bearing feet contact the main piers. Mark location for bearing shoes on the main pier, and drill in place anchor bolts as shown on the plans. Use a template to space anchor bolts and to hold anchor bolts vertical. Using a non -shrink epoxy grout, form up and install grout pads under bearing s hoes as shown on the plans, and in a similar manner as for the sheave pedestals, level bearing shoes with a machinist level. Bearing shoe elevations shall be accurate to within ± 1/16 inch. Entire length of bearing feet shall contact the bearing shoes. Grind bearing feet and repaint as required.
820.09.11 Installation of Span and Counterweight Guide Rails
(Vertical Lift): Install span and counterweight guide rails as shown on the plans. Guide rails shall be vertical to within ± 1/8 inch along the entire length of the rail. Guide rail splices shall mate flush. Roller guides shall not ride on guide rails during operation when there is no wind.
820.09.12 Installation of Span Locks (Vertical Lift): Span lock catch
shall have already been installed on the movable span. Locate span lock base and drill in place anchor bolts as shown on the plans. Use a template to space anchor bolts and to hold anchor bolts vertical. Using an epoxy grout from the Approved Materials List, form up and install grout pads under span lock bases as sho wn on the plans, and in a similar manner as the sheave pedestals. Level span lock bases with a machinist level. Span lock base elevations shall be accurate to within ± 1/16 inch. Locate span lock on base such that the center of the latch, when extended, is over the center of the catch when the latch is horizontal. Shim span lock so that there is a 1/16 -inch gap between the latch and the catch when the latch is extended. Adjust limit switches so that the span lock latch is fully inside the enclosure when retracted and horizontal when extended.
820.09.13 Installation of Air Buffers (Vertical Lift): Install air buffers
as shown on the plans and thoroughly lubricate. Provide air pressure gauges (0 - 300psi) and install in place of the oilers. Operate span and adjust air valves until the span seats gently and all buffers see approximately the same maximum pressure. This should be between 75 and 100 psi. Be prepared to demonstrate pressure settings during final setup and inspection, and have personnel and tools available to make additional adjustments at that time. After air buffer operation has been accepted, match mark the air valve position and install oilers.
820.10 Construction Require Ments for Bascule Sp An
BRIDGES.
820.10.1 Construction of Approach Spans: Approach spans
immediately adjacent to the movable span shall not be constructed until construction of the movable spans is completed. Each approach span must match the elevation and profile of the movable span across the entire width of the roadway to within ± 1/8 inch.
820.10.2 Alignment of Span Trunnion Bearings (Bascule): Span
trunnion bearing supports must have a surface flatness of 0.010 inches under the entire footprint of the span trunnion bearing housing and must be level to the accuracy of a machinist’s level. Field machine, if necessary, to meet these requirements. Shim the span trunnion bearings to the design elevations and align using a piano wire, laser, or other approved method.
820.10.3 Alignment of Movable Span(s) (Bascule): Hold trusses or
girders of bascule span(s) erected in the open position to the correct alignment by the use of struts, braces, guy -wires or other approved methods. Drilling and reaming of bolt holes for lateral bracing may be performed after lowering the bascule span(s) to allow adjustment of alignment in the closed position. For double leaf bascule spans, the two spans must be aligned to within the allowable tolerances of the span locks in the closed position, and the two spans must match the elevation and profile of each other across the entire width of the roadway to within ± 1/8 inch. Do not install the turned bolts/fitted pins in the span trunnion bearings until alignment of the bascule span(s) in the open and closed positions has been verified.
820.10.4 Balancing of the Movable Span (Bascule): Use the strain
gauge balancing method to balance the movable span(s). Adjust balance blocks to achieve a balance condition of 3,000 pounds “toe” or “tip” heavy in the closed position and neutral in the open position.
820.11 MEASUREMENT. Except as defined below, measurement for movable
bridge components shall be made in accordance with its respective Section. Measurement includes all equipment, materials, labor, tools, and incidentals necessary to complete this item.
1.Temporary Operation and Maintenance of Movable Span: Operatio n and maintenance of the movable span during construction will be measured on a lump sum or per day basis. A billable day is when the bridge is operated for more than twelve hours.
820.10 Construction Require Ments for Bascule Sp An
BRIDGES.
820.10.1 Construction of Approach Spans: Approach spans
immediately adjacent to the movable span shall not be constructed until construction of the movable spans is completed. Each approach span must match the elevation and profile of the movable span across the entire width of the roadway to within ± 1/8 inch.
820.10.2 Alignment of Span Trunnion Bearings (Bascule): Span
trunnion bearing supports must have a surface flatness of 0.010 inches under the entire footprint of the span trunnion bearing housing and must be level to the accuracy of a machinist’s level. Field machine, if necessary, to meet these requirements. Shim the span trunnion bearings to the design elevations and align using a piano wire, laser, or other approved method.
820.10.3 Alignment of Movable Span(s) (Bascule): Hold trusses or
girders of bascule span(s) erected in the open position to the correct alignment by the use of struts, braces, guy -wires or other approved methods. Drilling and reaming of bolt holes for lateral bracing may be performed after lowering the bascule span(s) to allow adjustment of alignment in the closed position. For double leaf bascule spans, the two spans must be aligned to within the allowable tolerances of the span locks in the closed position, and the two spans must match the elevation and profile of each other across the entire width of the roadway to within ± 1/8 inch. Do not install the turned bolts/fitted pins in the span trunnion bearings until alignment of the bascule span(s) in the open and closed positions has been verified.
820.10.4 Balancing of the Movable Span (Bascule): Use the strain
gauge balancing method to balance the movable span(s). Adjust balance blocks to achieve a balance condition of 3,000 pounds “toe” or “tip” heavy in the closed position and neutral in the open position.
820.11 MEASUREMENT. Except as defined below, measurement for movable
bridge components shall be made in accordance with its respective Section. Measurement includes all equipment, materials, labor, tools, and incidentals necessary to complete this item.
1.Temporary Operation and Maintenance of Movable Span: Operatio n and maintenance of the movable span during construction will be measured on a lump sum or per day basis. A billable day is when the bridge is operated for more than twelve hours.
820.10 Construction Require Ments for Bascule Sp An
BRIDGES.
820.10.1 Construction of Approach Spans: Approach spans
immediately adjacent to the movable span shall not be constructed until construction of the movable spans is completed. Each approach span must match the elevation and profile of the movable span across the entire width of the roadway to within ± 1/8 inch.
820.10.2 Alignment of Span Trunnion Bearings (Bascule): Span
trunnion bearing supports must have a surface flatness of 0.010 inches under the entire footprint of the span trunnion bearing housing and must be level to the accuracy of a machinist’s level. Field machine, if necessary, to meet these requirements. Shim the span trunnion bearings to the design elevations and align using a piano wire, laser, or other approved method.
820.10.3 Alignment of Movable Span(s) (Bascule): Hold trusses or
girders of bascule span(s) erected in the open position to the correct alignment by the use of struts, braces, guy -wires or other approved methods. Drilling and reaming of bolt holes for lateral bracing may be performed after lowering the bascule span(s) to allow adjustment of alignment in the closed position. For double leaf bascule spans, the two spans must be aligned to within the allowable tolerances of the span locks in the closed position, and the two spans must match the elevation and profile of each other across the entire width of the roadway to within ± 1/8 inch. Do not install the turned bolts/fitted pins in the span trunnion bearings until alignment of the bascule span(s) in the open and closed positions has been verified.
820.10.4 Balancing of the Movable Span (Bascule): Use the strain
gauge balancing method to balance the movable span(s). Adjust balance blocks to achieve a balance condition of 3,000 pounds “toe” or “tip” heavy in the closed position and neutral in the open position.
820.11 MEASUREMENT. Except as defined below, measurement for movable
bridge components shall be made in accordance with its respective Section. Measurement includes all equipment, materials, labor, tools, and incidentals necessary to complete this item.
1.Temporary Operation and Maintenance of Movable Span: Operatio n and maintenance of the movable span during construction will be measured on a lump sum or per day basis. A billable day is when the bridge is operated for more than twelve hours.
820.10 Construction Require Ments for Bascule Sp An
BRIDGES.
820.10.1 Construction of Approach Spans: Approach spans
immediately adjacent to the movable span shall not be constructed until construction of the movable spans is completed. Each approach span must match the elevation and profile of the movable span across the entire width of the roadway to within ± 1/8 inch.
820.10.2 Alignment of Span Trunnion Bearings (Bascule): Span
trunnion bearing supports must have a surface flatness of 0.010 inches under the entire footprint of the span trunnion bearing housing and must be level to the accuracy of a machinist’s level. Field machine, if necessary, to meet these requirements. Shim the span trunnion bearings to the design elevations and align using a piano wire, laser, or other approved method.
820.10.3 Alignment of Movable Span(s) (Bascule): Hold trusses or
girders of bascule span(s) erected in the open position to the correct alignment by the use of struts, braces, guy -wires or other approved methods. Drilling and reaming of bolt holes for lateral bracing may be performed after lowering the bascule span(s) to allow adjustment of alignment in the closed position. For double leaf bascule spans, the two spans must be aligned to within the allowable tolerances of the span locks in the closed position, and the two spans must match the elevation and profile of each other across the entire width of the roadway to within ± 1/8 inch. Do not install the turned bolts/fitted pins in the span trunnion bearings until alignment of the bascule span(s) in the open and closed positions has been verified.
820.10.4 Balancing of the Movable Span (Bascule): Use the strain
gauge balancing method to balance the movable span(s). Adjust balance blocks to achieve a balance condition of 3,000 pounds “toe” or “tip” heavy in the closed position and neutral in the open position.
820.11 MEASUREMENT. Except as defined below, measurement for movable
bridge components shall be made in accordance with its respective Section. Measurement includes all equipment, materials, labor, tools, and incidentals necessary to complete this item.
1.Temporary Operation and Maintenance of Movable Span: Operatio n and maintenance of the movable span during construction will be measured on a lump sum or per day basis. A billable day is when the bridge is operated for more than twelve hours.
820.10 Construction Require Ments for Bascule Sp An
BRIDGES.
820.10.1 Construction of Approach Spans: Approach spans
immediately adjacent to the movable span shall not be constructed until construction of the movable spans is completed. Each approach span must match the elevation and profile of the movable span across the entire width of the roadway to within ± 1/8 inch.
820.10.2 Alignment of Span Trunnion Bearings (Bascule): Span
trunnion bearing supports must have a surface flatness of 0.010 inches under the entire footprint of the span trunnion bearing housing and must be level to the accuracy of a machinist’s level. Field machine, if necessary, to meet these requirements. Shim the span trunnion bearings to the design elevations and align using a piano wire, laser, or other approved method.
820.10.3 Alignment of Movable Span(s) (Bascule): Hold trusses or
girders of bascule span(s) erected in the open position to the correct alignment by the use of struts, braces, guy -wires or other approved methods. Drilling and reaming of bolt holes for lateral bracing may be performed after lowering the bascule span(s) to allow adjustment of alignment in the closed position. For double leaf bascule spans, the two spans must be aligned to within the allowable tolerances of the span locks in the closed position, and the two spans must match the elevation and profile of each other across the entire width of the roadway to within ± 1/8 inch. Do not install the turned bolts/fitted pins in the span trunnion bearings until alignment of the bascule span(s) in the open and closed positions has been verified.
820.10.4 Balancing of the Movable Span (Bascule): Use the strain
gauge balancing method to balance the movable span(s). Adjust balance blocks to achieve a balance condition of 3,000 pounds “toe” or “tip” heavy in the closed position and neutral in the open position.
820.11 MEASUREMENT. Except as defined below, measurement for movable
bridge components shall be made in accordance with its respective Section. Measurement includes all equipment, materials, labor, tools, and incidentals necessary to complete this item.
1.Temporary Operation and Maintenance of Movable Span: Operatio n and maintenance of the movable span during construction will be measured on a lump sum or per day basis. A billable day is when the bridge is operated for more than twelve hours.
820.10 Construction Require Ments for Bascule Sp An
BRIDGES.
820.10.1 Construction of Approach Spans: Approach spans
immediately adjacent to the movable span shall not be constructed until construction of the movable spans is completed. Each approach span must match the elevation and profile of the movable span across the entire width of the roadway to within ± 1/8 inch.
820.10.2 Alignment of Span Trunnion Bearings (Bascule): Span
trunnion bearing supports must have a surface flatness of 0.010 inches under the entire footprint of the span trunnion bearing housing and must be level to the accuracy of a machinist’s level. Field machine, if necessary, to meet these requirements. Shim the span trunnion bearings to the design elevations and align using a piano wire, laser, or other approved method.
820.10.3 Alignment of Movable Span(s) (Bascule): Hold trusses or
girders of bascule span(s) erected in the open position to the correct alignment by the use of struts, braces, guy -wires or other approved methods. Drilling and reaming of bolt holes for lateral bracing may be performed after lowering the bascule span(s) to allow adjustment of alignment in the closed position. For double leaf bascule spans, the two spans must be aligned to within the allowable tolerances of the span locks in the closed position, and the two spans must match the elevation and profile of each other across the entire width of the roadway to within ± 1/8 inch. Do not install the turned bolts/fitted pins in the span trunnion bearings until alignment of the bascule span(s) in the open and closed positions has been verified.
820.10.4 Balancing of the Movable Span (Bascule): Use the strain
gauge balancing method to balance the movable span(s). Adjust balance blocks to achieve a balance condition of 3,000 pounds “toe” or “tip” heavy in the closed position and neutral in the open position.
820.11 MEASUREMENT. Except as defined below, measurement for movable
bridge components shall be made in accordance with its respective Section. Measurement includes all equipment, materials, labor, tools, and incidentals necessary to complete this item.
1.Temporary Operation and Maintenance of Movable Span: Operatio n and maintenance of the movable span during construction will be measured on a lump sum or per day basis. A billable day is when the bridge is operated for more than twelve hours.
820.10 Construction Require Ments for Bascule Sp An
BRIDGES.
820.10.1 Construction of Approach Spans: Approach spans
immediately adjacent to the movable span shall not be constructed until construction of the movable spans is completed. Each approach span must match the elevation and profile of the movable span across the entire width of the roadway to within ± 1/8 inch.
820.10.2 Alignment of Span Trunnion Bearings (Bascule): Span
trunnion bearing supports must have a surface flatness of 0.010 inches under the entire footprint of the span trunnion bearing housing and must be level to the accuracy of a machinist’s level. Field machine, if necessary, to meet these requirements. Shim the span trunnion bearings to the design elevations and align using a piano wire, laser, or other approved method.
820.10.3 Alignment of Movable Span(s) (Bascule): Hold trusses or
girders of bascule span(s) erected in the open position to the correct alignment by the use of struts, braces, guy -wires or other approved methods. Drilling and reaming of bolt holes for lateral bracing may be performed after lowering the bascule span(s) to allow adjustment of alignment in the closed position. For double leaf bascule spans, the two spans must be aligned to within the allowable tolerances of the span locks in the closed position, and the two spans must match the elevation and profile of each other across the entire width of the roadway to within ± 1/8 inch. Do not install the turned bolts/fitted pins in the span trunnion bearings until alignment of the bascule span(s) in the open and closed positions has been verified.
820.10.4 Balancing of the Movable Span (Bascule): Use the strain
gauge balancing method to balance the movable span(s). Adjust balance blocks to achieve a balance condition of 3,000 pounds “toe” or “tip” heavy in the closed position and neutral in the open position.
820.11 MEASUREMENT. Except as defined below, measurement for movable
bridge components shall be made in accordance with its respective Section. Measurement includes all equipment, materials, labor, tools, and incidentals necessary to complete this item.
1.Temporary Operation and Maintenance of Movable Span: Operatio n and maintenance of the movable span during construction will be measured on a lump sum or per day basis. A billable day is when the bridge is operated for more than twelve hours.
2.Weighing and Balancing of Movable Span: Weighing and balancing of the Mova ble Span will be measured on a lump sum basis.
3.Final Setup and Field Testing: Final setup and field testing will be measured on a lump sum basis.
4.Training: Training of bridge operators and maintenance personnel will be measured on a lump sum basis.
5.Manuals: Preparing and submitting manuals will not be measured for payment. The cost is to be included in the mechanical, electrical, and facility items shown on the plans.
820.12 Payment.
Payment will be made at the Contract unit price which includes all equi pment, materials, labor, tools, and incidentals necessary to complete the item. Cost of preparing and submitting the manuals shall be included in the pay items of Sections of 821, 822, and 823. The Department will withhold 5 percent of the bid price of all mechanical, electrical, and facility items (821, 822, and 823 items) until all manuals have been reviewed and accepted, and final paper reproductions have been received by the Department. Payment will be made under: Item No. Pay Item Pay Unit 820-01 Temporary Operation & Maintenance of Movable Span Lump Sum 820-02 Temporary Operation & Maintenance of Movable Span Day 820-03 Weighing and Balancing of Movable Span Lump Sum 820-04 Final Setup and Field Testing Lump Sum 820-05 Training Lump Sum
2.Weighing and Balancing of Movable Span: Weighing and balancing of the Mova ble Span will be measured on a lump sum basis.
3.Final Setup and Field Testing: Final setup and field testing will be measured on a lump sum basis.
4.Training: Training of bridge operators and maintenance personnel will be measured on a lump sum basis.
5.Manuals: Preparing and submitting manuals will not be measured for payment. The cost is to be included in the mechanical, electrical, and facility items shown on the plans.
820.12 Payment.
Payment will be made at the Contract unit price which includes all equi pment, materials, labor, tools, and incidentals necessary to complete the item. Cost of preparing and submitting the manuals shall be included in the pay items of Sections of 821, 822, and 823. The Department will withhold 5 percent of the bid price of all mechanical, electrical, and facility items (821, 822, and 823 items) until all manuals have been reviewed and accepted, and final paper reproductions have been received by the Department. Payment will be made under: Item No. Pay Item Pay Unit 820-01 Temporary Operation & Maintenance of Movable Span Lump Sum 820-02 Temporary Operation & Maintenance of Movable Span Day 820-03 Weighing and Balancing of Movable Span Lump Sum 820-04 Final Setup and Field Testing Lump Sum 820-05 Training Lump Sum Section 821 Mechanical Systems
821.01 DESCRIPTION. Provide all material, equipment, tools, measuring
devices, and labor to purchase/fabricate, shop test, transport, install/erect, align/adjust, paint, lubricate, field test, and set -up all Mechanical Items/Systems as speci fied herein. These specification govern both new construction projects and rehabilitation/ repair projects.
821.02 ACRONYMS AND ABBREVI ATIONS. See 101.02 and 801.02 for
additional acronyms and abbreviations. ASJ All Service Jacket BOD Biological Oxygen Demand BTU British Thermal Unit CFM Cubic Feet per Minute CMU Concrete Masonry Unit CWP Cold Working Pressure GPM Gallons per Minute EPDM Ethylene Propylene Diene Monomer EEIPS Double Extra Improved Plow Steel EIPS Extra Improved Plow Steel FKM Fluorocarbon Elastomer FSK Foil-Scrim Kraft HFC Hard Fiber Core HPU Hydraulic Powe r Unit HVAC Heating, Ventilation, and Air Conditioning IWRC Independent Wire Rope Core MDFT Minimum Dry Film Thickness MERV Minimum Efficiency Reporting Value NIST National Institute of Standards and Technology NPS Nominal Pipe Size NRTL Nationally Recognized Testing Laboratories PE Polyethylene PVC Polyvinyl Chloride PVDF Polyvinylidene Diflouride
Source: Louisiana Standard Specifications for Roads and Bridges, 2016 Edition. Pages 822–849 of 1,145.