Effective with the December 2018 Letting 278 2019 Standard Spec ifications Section 511 Temporary Shoring
511.1 Description
1.This section describes designi ng and providing temporary shori ng at locations the plans show.
511.2 Materials
1.Provide a shoring design for eac h location where the plan requires temporary sho ring. Conform to AASHTO Load and Resistance Factor Design Specifications and the WisDOT Bridge Manual. Design to address all limit states using a design life of 36 months or the project specific duration, whichever is greater. Have a professional engi neer, registered in the state of Wisconsin and knowledgeable of the specific site conditions and requirements, verify the adequacy of the design. Submit one copy of each shoring design, signed and sealed by the same professional engi neer verifying the design, to the engineer for incorporation into the permanent project record.
511.3 Construction
1.Provide temporary shoring at each required location conforming to the design developed for that location as follows: Under the Temporary Shoring bid item: for all temporary shoring locations the contract shows. Under the Temporary Shoring (str ucture) bid items: for temporar y shoring associated with structure ID numbers identified in the bid item supplemental descriptions . Under the Temporary Shoring (loc ation) bid items: for temporary shoring associated with roadway locations identified in the bid item supplemental descriptions.
2.Remove temporary shoring no longer needed unless the engineer allows it to remain in place. Under the left-in-place bid items, leav e the shoring in place as the special provisions specify or as the plans show. Place backfill conforming to 206.3.13 in excavated space not occupied by the new permanent construction.
511.4 Measurement
1.The department will measure the Te mporary Shoring bid items by the square foot acceptably completed at locations the plan s show, measured as the area of exposed face in the plane of the shoring from the ground line in front of the shoring to a maximum of one foot above the retained grade. Shoring used for staged construction in multiple configu rations without removal and reinstallation will be measured on ce based on the configuration with the largest area of exposed face.
511.5 Payment
1.The department will pay for measured quantities at the contrac t unit price under the following bid items: ITEM NUMBER DESCRIPTION UNIT 511.1100 Temporary Shoring SF 511.1200 Temporary Shoring (structure) SF 511.1300 Temporary Shoring (location) SF 511.2200 Temporary Shoring Left In Place (structure) SF 511.2300 Temporary Shoring Left In Place (location) SF
2.Payment for the Temporary Shor ing bid items is full compensati on for designing and providing shoring; for providing a sign ed and sealed copy of the design; for remov al or additional work required to leave in place; and for backfilling.
3.The department will not pay for te mporary shoring for location s the plans do not show. Effective with the December 2018 Letting 279 2019 Standard Spec ifications Section 512 Steel Sheet Piling
512.1 Description
1.This section describes provi ding permanent and temporary steel sheet piling.
512.2 Materials
512.2.1 Permanent Steel Sheet Piling
1.Furnish permanent sheet piling conforming to ASTM A328 and with the section modulus, the plans or special provisions specify.
2.Unless specified otherwise, do not furnish used material under the Piling Steel Sheet Permanent bid items.
3.Unless the engineer directs ot herwise, the contractor shall su bmit before or at delivery of steel sheet piling the certified report of test or analysis as specified fo r mill inspection and tests in 506.3.21.
512.2.2 Temporary Steel Sheet Piling
1.Furnish temporary steel sheet p iling with a section modulus eq ual to or greater than the plans show. Extend one foot or higher above the retained grade unless the p lans show a gr eater height. The contractor may employ used steel sheet piling in good condition instead of new material. Remove and dispose of temporary sheet p iling when no longer needed.
512.3 Construction
512.3.1 Driving and Cutting Off 512.3.1.1 General
1.Coordinate driving operations to prevent damage or displacemen t of concrete in substructure units or damage to adjacent facilit ies due to vibrations.
2.Drive sheeting with a variation of 1/4 inch or less per foot from the vertical or from the batter the plans show. Ensure that the sheetpiles are within 6 inches of the pla n position after driving. Do not damage sheetpiles attempting to correct for misalignment.
3.Remove and replace, or otherwise correc t, sheetpiles the engin eer deems unacceptable under 105.3 . Submit details of planned corrections to the engineer for revie w and approval before initiating any corrective action.
4.Drive sheetpiles to or beyond the required tip elevation the p lans show.
512.3.1 2 Driving System
1.Furnish a sheetpile driving system capable of driving the shee tpiles to the required minimum tip elevation the plans show.
2.The engineer may order the contractor to remove a pile driving system component from service if it causes insufficient energy transfer or damages the sheetpiles. Do not return a component to service until the engineer determines that it has been satisfactorily r epaired or adjusted.
3.Drive sheetpiles with diesel, air, steam, gravity, hydraulic, or vibratory hammers.
512.3.1 3 Cut-Offs
1.Cut off sheetpiles at the elevat ions the plans show or as the engineer directs. Pile cut-offs become the contractor's property. Dispose o f cut-offs not incorporated into the work.
512.3.2 Wales
1.Brace the steel sheet piling with waling strips as the plans s how. Preferably, make the wales one length between corners and bolt to the piles.
512.3.3 Painting
1.Paint permanent steel sheet piling as specified for painting steel piling in 550.3.11.3 .
512.4 Measurement
1.The department will measure Pili ng Steel Sheet Permanent Deliv ered by the square foot acceptably completed. The department will obtain the measured quantity by multiplying the length of the wall the plans show by the length of sheeting required.
2.The department will measure Pili ng Steel Sheet Permanent Driven by the square foot acceptably completed. The department will m easure the area of the wall fro m the sheet pile tip elevation to the top cutoff. The department will make no allowance for overlap of th e piles.
3.The department will measure Piling Steel Sheet Temporary by the square foot acceptably completed. The department will measure the area from the sheet pile tip el evation to one foot above the retained
Referenced in this section
Sections that cite this one
Temporary Shoring in other states
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Source: Wisconsin Standard Specifications for Highway and Structure Construction, 2019 Edition. Pages 287–287 of 601. View official source ↗