03374Move Bridge

MOVE BRIDGE

PART 1 GENERAL

1.1SECTION INCLUDES

propelled modular transporters (SPMT), lateral slide, longitudinal launch, or crane.

moving bridges.

location.

1.2RELATED SECTIONS

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1.3REFERENCES

1.4DEFINITIONS

mid-span.

bearings, barriers, light-poles, signs, utilities, similar appurtenances, and post-tensioning components - whether permanent or temporary.

corner relative to the plane defined concurrently by the elevations of the other three bridge corners.

1.5SUBMITTALS

physical changes to the permanent structure necessitated by the construction methods.

Design Specifications and the UDOT Structures Design and Detailing Manual (SDDM).

adversely impact the load carrying capacity of the structure.

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1) Update the load rating package according to the current edition of the UDOT Bridge Management Manual when the inventory load rating factor is reduced by 2 percent or more, or when the inventory load rating listed as shown is less than 1.02 and the load carrying capacity of the structure is reduced. 2) Revise the move concept and proposed plan revisions if the revisions result in a load rating factor less than 1.0.

accepted.

SDDM if the defined support point locations are changed.

UDOT Structures Quality Control/Quality Assurance (QC/QA) Procedures.

Structural Engineer (SE) licensed in the State of Utah on plans and calculations covering the plan revisions made.

Specifications Section 3 (Temporary Works).

Specifications and the SDDM when the bridge temporary works and permanent bridge will be used as a public route.

sizes of the bridge temporary works.

abutment seats to support the span under construction, including piling, spread footings, or other foundations.

adequate for the proposed loads and that settlement or elastic deflections of the bridge temporary works will not adversely affect the bridge moved.

UDOT Structures Quality Control/Quality Assurance (QC/QA) Procedures when the bridge temporary works and permanent bridge will be used as a public route.

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including at least the following: 1) Location 2) General layout 3) Surface grading 4) Surfacing material 5) Drainage 6) Environmental protection 7) Material storage areas 8) Access 9) Fences 10) Gates 11) Barriers

requiring removal and replacement, all structures crossed, and all utilities crossed, over and under.

1) Signed confirmations of coordination from the utility owner are required when crossing high pressure gas lines and main water lines.

Include at least the following: 1) Plan view of axle lines. 2) Average effective ground pressure under SPMT or similar units. 3) Maximum single wheel load and anticipated wheel contact patch size.

and travel path. 1) Identify areas requiring ground improvement. 2) Provide details of required improvements.

1) List the structure number. 2) Provide a load rating and evaluation of the structure crossed.

load influence. 1) List their structure number if available. 2) Provide a load rating/evaluation for the load influencing them.

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crossed. 1) Temporary shoring is required if the operating load rating factor is less than 1.

1) Coordinate with the owner of the item to determine plan requirements and limitations.

obstacle along the path.

obstacle along the path.

location to correct for or accommodate deviations from the required setting tolerances if tolerances are not met.

including at least the following: 1) Location 2) General layout 3) Surface grading 4) Surfacing material 5) Drainage 6) Environmental protection 7) Material storage areas 8) Access 9) Fences 10) Gates 11) Barriers

requiring removal and replacement, all structures crossed, and all utilities crossed, over and under.

1) Signed confirmations of coordination from the utility owner are required when crossing high pressure gas lines and main water lines.

Include at least the following: 1) Maximum permissible deviation from the exact slide plane to the constructed slide plane. 2) Maximum possible load on a single slide bearing. 3) Minimum possible load on a single slide bearing. 4) Clearances to fixed obstacles. 5) Plan for controlling and directing the location of the bridge during the slide.

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6) Maximum deflections along the slide path on the temporary support and permanent structure during the move.

and travel path. 1) Identify areas requiring ground improvement. 2) Provide details of required improvements.

location to correct for or accommodate deviations from the required setting tolerances if tolerances are not met.

bridges using steel girders.

bridges using concrete girders.

location to correct for or accommodate deviations from the required setting tolerances if tolerances are not met.

1) Move equipment includes the heavy lift system such as SPMTs, jacks, or cranes used to raise or lower the structure, and transport systems such as SPMTs or similar systems used to laterally transport the structure.

1) Show the center of gravity (CG) of the bridge being moved and the weight being moved.

component dimensions and known material densities. 2) Support locations between the move equipment and the bridge being moved. 3) Maximum vertical load demands and capacities.

4) Maximum vertical load demands and capacity of the weakest component in the vertical load path. 5) Show the number of wheels or axles in each hydraulic group and the geometry of the wheels or axle lines in each hydraulic group.

6) Anticipated maximum stroke requirements. Move Bridge

7) Stability limits including, but not limited to, the maximum longitudinal and transverse grades along the path and the maximum permitted longitudinal and transverse grades based on system properties. 8) Maximum permitted deviation of support columns from vertical and maximum anticipated deviation of support columns from vertical. 9) Step by step move procedures.

lifting, transporting, and setting.

steps in this context are the steps operators take to assure the system is properly set up, and that the set up matches the submitted drawings.

10) An hour by hour schedule of the move.

1) Move equipment includes the heavy lift system (for example, jacks or cranes used to raise or lower the structure), and transport systems (jacks, slide pads, rollers or other systems used to laterally move the structure).

1) Weight of the system being moved. 2) Minimum and maximum anticipated friction coefficients. 3) Minimum and maximum anticipated slide force. 4) Jack capacity. 5) Maximum capacity over demand ratio of the weakest component along the lateral force system. 6) Stroke length and rate. 7) Method to reverse movement along the travel path. 8) Equipment used to control and direct the location of the bridge during the slide. 9) Step by step move procedures.

lifting, transporting, and setting.

steps operators take to verify the system is properly set up, and that the set up matches the submitted drawings.

move. Move Bridge

10) An hour by hour schedule of the move.

of bridge moves using cranes. Refer to this Section, Article 1.5, paragraph C.

for each.

other risks.

actions if any part of the contingency plan must be implemented.

parts or service.

following:

move, and lead communicator.

1) Bridge move supervisor (primary point of contact for the move) 2) Move system supervisor 3) Contractor supervisor 4) Safety supervisor 5) Engineer of record 6) Contractor’s engineer 7) Heavy lift engineer 8) Structures Division representative 9) Resident engineer 10) Public involvement liaison.

1) Refer to this Section, 3.4C for minimum requirements.

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and locations of geometry control reference points on the bridge and in the bridge staging area. 1) Measurements may be elevations, dimensions, or other readings.

1) Define allowable tolerances and warning levels.

bridge during the move.

equal to the limits defined in the contract plans

measurements exceed the warning levels.

recorded. 1) Refer to this Section, 3.4C for minimum requirements.

completion before opening the bridge to traffic.

PART 2 PRODUCTS

2.1MATERIALS

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PART 3 EXECUTION

3.1GENERAL REQUIREMENTS

public during:

traveled roadways, navigational or recreational waterways, pedestrian facilities, and any existing commercial, industrial, or other facilities.

3.2BRIDGE TEMPORARY WORKS

drawings.

authorized working drawings.

and tolerances with sufficient clearances to accommodate the heavy lift system.

elevations according to the authorized working drawings and before casting concrete in the permanent bridge.

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3.3PREPARATION FOR BRIDGE MOVE

personnel involved with the bridge move.

heavy lift engineer, contractor’s engineer, resident engineer, and Structures Division representative.

address unforeseen, variable factors with all personnel involved.

jacking, cribbing, raising, and lowering the bridge.

corresponding stability conditions for the heavy lift system and falsework.

equipment malfunction.

3.4BRIDGE LIFTING, TRANSPORTING, AND SETTING

age of 21 days since the last casting operation and has attained the specified 28 day minimum compressive strength, unless otherwise authorized.

authorized Monitoring Plan.

supports at initial lift and during the move.

lines of support at initial lift and during the bridge move. 1) This measurement is not required for bridges moved with two lines of supports.

levels and absolute limit levels.

1) Set the move monitoring system.

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2) Monitor the bridge through a typical daily temperature cycle using the monitoring system used during the move.

each day and when the bridge reaches the approximate maximum temperature.

3) Record the initial measurements.

condition of the bridge.

1) Record measurements and compare the bridge to the baseline condition. 2) Calculate the deflection change as the difference between the condition just before to just after the initial lifting of the bridge. 3) Verify that measurements are within tolerance limits.

1) Continuously monitor the bridge.

contact with the final supports.

1) Record a final set of monitoring system measurements. 2) Verify that measurements are within anticipated and allowable tolerance limits specified for permanent elevations.

defined in the authorized Monitoring Plan.

3.5SETTING TOLERANCES

move:

span from overall longitudinal alignment of an individual span after setting.

transverse location for example for longitudinal position at each line of bearings.

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directions at each end of the span or spans being set to not more than 1 inch or to that required for the accommodation of manufactured expansion joint components and bearings, whichever is less.

with respect to similar matching surfaces at expansion joints such as plane of web or parapet) of adjacent spans, bent, or abutment features in the absence of other constraints.

bridge within plus or minus 1/8 inch of required elevations, unless tighter tolerances are required in the plans and the authorized shop drawings.

within the limits shown and the authorized bearing shop drawings.

tolerances according to the authorized Lifting, Transporting, and Setting Plan.

to accommodate expansion joint devices within plus or minus 1/8 inch of dimensioned locations, unless tighter tolerances are required according to the expansion joint manufacturer or as shown and in authorized expansion joint shop drawings.

authorized Lifting, Transporting, and Setting Plan.

3.6BRIDGE ASSESSMENT AND REMEDIATION

Engineer post move and before opening bridge to traffic.

opening to traffic or if the repair can be completed at a later date.

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Table 1 Crack Treatments Crack Location Treatment Related Section(s) Width Less than Substructure Penetrating concrete sealer or or equal to and concrete coating per project Refer to 03392 0.016 superstructure requirements inches Greater than 0.016 Substructure inches and and Epoxy injection Refer to 03924 up to and superstructure including 0.25 inches Delamination repair and Greater Substructure penetrating concrete sealer or than 0.25 and Refer to 03392 and 03924 concrete coating per project inches superstructure requirements

3.7RESTORATION OF ORIGINAL CONDITIONS

site according to the agreements with each property owner and to the satisfaction of the Engineer.

END OF SECTION

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