Wisconsin WisDOT Standard Specifications (within FDM) — Section 208

Effective with the December 2018 Letting 101 2019 Standard Spec ifications Section 208 Borrow

208.1Description

(1)This section describes constru cting embankments and other portions of the work consistent with the

earthwork summary the plans show for borro w. If the contract specifies moving material from one division to another, that material is not borrow.

208.2Materials

208.2.1 Quality

(1)Under the Borrow bid item, furnis h material consisting of sati sfactory soil or a mix ture of satisfactory

soil, stone, gravel, or other acc eptable materials, of a charac ter and quality satisfactory for the purpose intended. Use material free from sod, stumps, logs, and other p erishable and deleterious matter.

(2)For select borrow excavation furnish material conforming to th e quality requirements specified in the

contract. 208.2.2 Source

(1)Obtain suitable borrow material from one or more of the following sources:

1.Contractor-furnished sour ces the engineer approves.

2.State-furnished sources out side the project right-of-way li mits.

3.Surplus or waste materials fr om divisions consistent with t he earthwork summary the plans show.

4.If the engineer authorizes in writing, from one or more of the following sources:

4.1Material from within the right-of-way limits but outside e xcavation limits that the contract does not

already designate as excavation.

4.2Surplus excavation from other contracts.

4.3Material from old road fills, removed as specified in 214.

(2)Use material with suitable engineering properties obtained fro m work done under other contract bid

items to reduce the quantity of borrow required in that divisio n.

(3)Unless the contract specifies o therwise, the contractor shall negotiate with property owners or others

from whom the contractor proposes to obtain borrow material.

(4)The department may approve non-comm ercial borrow sources where the contractor proposes to

create or enlarge an area of open water if the contractor submi ts a written request. Include with that request written evidence that the following conditions are met:

1.The owner of the property h as a valid and practicable plan for creating or enlarging a body of impounded

water and that plan complies with all applicable ordinances or regulations.

2.If the proposed site is within 5 miles of a public-use airp ort, the airport manager or airport owner and the

department's bureau of aeronautics have been contacted and conf irm receipt of the following: - Contractor and landowner names and contact information including phone numbers. - Scale map showing the locati on of the proposed site in relati on to the airport. - Detailed reclamation plans showing the location, size, and ou tline of proposed new open water; slopes of the impoundment area; proposed re-vegetation plan; an d other requested information.

3.WDNR and other federal and state agencies with jurisdiction have approved the plan.

4.The proposed plan is not cont rary to the public interest an d will not create a public nuisance or hazard.

(5)Provide the final condition of the borrow site as specified fo r final cleanup in 104.9 .

208.3Construction

(1)Clear and grub the area for the borrow site in the same manner specified for roadway and drainage

excavation. Remove sod or other p erishable or unsuitable material from the proposed borrow source area. Excavate borrow sites in a way that allows the engineer t o accurately measure the material excavated and incorporated in the work.

(2)Dispose of stone, broken rock, boulders, and other materials u nsuitable for use in the work as

specified in 205.3.12 .

(3)Dispose of stumps, trees, logs , brush, tops, and other debris resulting from clearing and grubbing work

in borrow site areas as specified in 201.3 .

(4)Except for commercial sites, str ip off the available topsoil, or other soil favorable to plant growth,

overlying the borrow site. Stock pile the topsoil in sufficient quantities to cover all surfaces of excavated areas from 4 to 6 inches deep . If the topsoil overlying the bor row site is less than 4 inches deep, replace the topsoil to the original depth. After trimming and finishing the site, spread the salvaged

Effective with the December 2018 Letting 102 2019 Standard Spec ifications material uniformly over excavated areas of the borrow site, unl ess the engineer authorizes otherwise in writing.

(5)Restore the excavated areas o f the borrow site, adjacent distu rbed areas, and associated haul roads

as follows:

1.Fertilize as specified in 629 and seed as specified in 630 unless the landowner e lects otherwise under

630.3.3.4 .

2.Install erosion control devi ces conforming to the ECIP deve loped under 107.20 .

(6)The contractor may place borrow, or select borrow, by hydrauli c methods. If the contractor elects to do

this, it shall obtain the engineer’s written approval covering the quality and sources of the proposed material and the proposed construction methods before proceeding.

208.4Measurement

208.4.1 General

(1)The department will measure Borrow or Select Borrow by the cub ic yard acceptably completed.

Except when the contract specif ies otherwise, the department will not measure material obtained under other contract bid items a s borrow. Borrow measurement ex cludes material from sources that include but are not limited to the following:

1.Marsh excavation.

2.Excavation below subgrade not designated in the contract.

3.Excavation from storm sewers or pipe culverts.

208.4.2 Measurement in Original Position

(1)If feasible, the department will measure the borro w quantity i n its original position in the source

location. The department will com pute this volume by the method of average end areas, with no correction for curvature, or if the engineer elects, by the met hod of truncated pris ms. The engineer and contractor may agree to an alternate calculation method.

(2)The contractor shall give the engineer sufficient notice befor e performing excavation operations so the

engineer has time to accurately measure the borrow source. The department will not measure sod or other unsuitable material removed, or material salvaged from bo rrow sources and used for covering surfaces of the excavated areas within the borrow source. The e ngineer may require the contractor to remove topsoil or other unsuitable materials from the surface o f the borrow area before taking original cross-sections of the source ar ea and, upon completing the exca vation, to smooth or trim the site, as required, to allow taking accurate final measurements of the ar ea before replacing the topsoil. The department will not measure any material excavated before the engineer staked out and cross- sectioned the borrow source, and material excavated in excess o f that required for, or not incorporated in the work. 208.4.3 Measurement in Vehicles

(1)If in the engineer’s judgment measurement in the original position is impracticable, the engineer will

measure all or part of the Borrow or Select Borrow bid item by the cubic yard in the vehicle. The engineer will determine the capacity of each vehicle used for h auling the material to the nearest 1/10 cubic yard and adjust for material expansion in the vehicle. 208.4.4 Measurement in Final Position

(1)If the contractor elects, or the contract requires to use hydr aulic methods for placing embankments,

the department will measure Borrow or Select Borrow by the cubic yard of compacted embankment acceptably completed, measured by the method of average end are as, with no correction for curvature. The department will determine the end areas from pre construction cross-sections of the area being covered by the proposed embankment and from cross-se ctions of the completed work. The department will not make allowances for shrinkage, subsidence, lateral movement of the material, or for material in excess of that required for work the plans show or the engineer orders.

208.5Payment

(1)The department will pay for measured quantities at the contrac t unit price under the following bid

items: ITEM NUMBER DESCRIPTION UNIT

208.0100 Borrow CY

208.1100 Select Borrow CY

(2)Payment for Borrow and Select B orrow is full compensation for providing borrow material; for clearing,

grubbing, excavating, sloping, s haping, trimming, loading, hauling, placing; compacting; disposing of

Effective with the December 2018 Letting 103 2019 Standard Spec ifications surplus and unsuitable material; and for salvaging, stockpiling , rehandling, and spreading salvaged material for covering the surfaces of excavated areas within bo rrow sites.

(3)The department will pay for material obtained from within the project right-of-way limits but outside

project excavation limits, furnished under 208.2.2 , at a price determined under 109.4 .

(4)Payment also includes water fo r compaction and dust control ex cept, if the contrac t contains the Water

bid item, the department will pays eparately for compaction and dust control water under 624.5 .

(5)The department will pay for erosion control, fe rtilizing, and seeding of borrow sites and associated

areas separately as specified fo r borrow sites and material dis posal sites under 628.5.1 .

Effective with the December 2018 Letting 104 2019 Standard Spec ifications Section 209 Granular Backfill

209.1Description

(1)This section describes furnishi ng processed or selected granul ar materials, where the plans designate,

as follows:

1.Backfilling excavations for frost heave or other unstable m aterials.

2.Backfilling storm sewers removals under 204.

3.Filling marsh areas associated with marsh excavation.

4.Placing material for subgrade improvement.

209.2Materials

209.2.1 General

(1)Conform to the definitions under 301.2 . Furnish virgin materials consisting of either sand-sized

particles or sand-sized particles mixed with gravel, crushed gr avel, or crushed stone. Do not use crushed concrete or reclaimed asphalt.

(2)Ensure that the material provided has a liquid limit less than or equal to 25 and a plasticity index less

than or equal to 6. The contractor may substitute grade 1 for grade 2 material. 209.2.2 Gradation

(1)Furnish granular backfill material with a gradation conforming to the following:

- For the entire sample, conform to the following gradation lim its: PERCENT PASSING BY WEIGHT SIEVE GRADE 1 GRADE 2 6-inch 100 100 3-inch 85 - 100 85 - 100 No. 4 25 - 100 25 - 100 - For the portion of the sample passing the No. 4 sieve, confor m to the following gradation limits: PERCENT PASSING BY WEIGHT SIEVE GRADE 1 GRADE 2 No. 4 100 100 No. 40 0 - 75 ___ No. 100 0 - 15 0 - 30 No. 200 0 - 8.0 0 - 15.0 209.2.3 Sampling and Testing

(1)The department will sample and test material according to the following:

Sampling[1] ............................................................................................................................. ........... AASHTO T2 Percent passing t he 200 sieve ................................. ............................................................... ........ AASHTO T11 Gradation[1] ............................................................................................................................. ........ AASHTO T27 Liquid l imit .................................................. ............................................................... ...................... AASHT O T89 Plasticity index and plastic limit ............................ ............................................................... ........... AASHTO T90 [1] As modified in CMM 8-60. 209.2.4 Source

(1)Except as specified for materials used from roadway excavation under 104.8 , the contractor is

responsible for negotiating with property owners to obtain gran ular material.

(2)Remove the granular material and restore the pit to a final co ndition as specified for final cleanup and

material disposal under 104.9 and 208.3 .

(3)In addition to removing the topsoil, substantially remove any overburden of soil, or earthy materials

passing the No. 200 sieve before excavating the granular material.

(4)If the department measures granular material for payment in it s original position, trim and shape pits

after removing overburden and bef ore removing granular material to allow taking accurate measurements. After removing the required quantity of granular material, repeat trimming and shaping of the areas to allow taking accurate measurements.

(5)Restore the site by replacing or disposing of the removed over burden and ensure that disposal sites

are neatly constructed.

Source: Wisconsin Standard Specifications for Highway and Structure Construction, 2019 Edition. Pages 110–112 of 601.

← Previous

207 Embankment

209 Granular Backfill