Wisconsin WisDOT Standard Specifications (within FDM) — Section 624

Effective with the December 2018 Letting 375 2019 Standard Spec ifications Section 624 Water

624.1Description

(1)This section describes furnishi ng, hauling, and applying water to compact embankm ents and base, re-

compacting existing base, or dust control within the right-of-w ay.

624.2Materials

(1)Use water that is reasonably clean and free of harmful materia ls.

624.3Construction

(1)Haul and apply water using vehicles equipped with watertight t anks. Equip the tanks with a suitable

pressure-type distributor device that allows uniform applicatio n over the specified area. Use tanks with a minimum capacity of 1000 gallons and equipped with positives hut-off valves controlled while the vehicle is in motion.

(2)Uniformly apply the water and incorporate in the manner and qu antities, at the times, locations, and

purposes that the engineer orders or allows. Load and unload th e tank and operate the equipment in a way that does not waterlog or damage the subgrade or base.

624.4Measurement

(1)The department will measure Wate r by the thousand gallon units (MGAL). The quantity measured

equals the volume of water furnished and applied as the enginee r directs according to the contract. The department will determine the volume by engineer-approved m eters, or from tanks of known capacity.

624.5Payment

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

items: ITEM NUMBER DESCRIPTION UNIT

624.0100 Water MGAL

(2)Payment for Water is full compen sation for providing, hauling, and applying or incorporating the water.

(3)If the contract does not conta in the bid item Water, then furn ishing and applying water is incidental to

other items of work.

Effective with the December 2018 Letting 376 2019 Standard Spec ifications Section 625 Topsoil and Salvaged Topsoil

625.1Description

(1)This section describes furnishing, placing, spreading, and finishing humus-bearing soil, adapted to

sustain plant life, commonly known as topsoil, from locations t he contractor furnishes beyond the limits of the right-of-way.

(2)This section also describes removing topsoil from the sites of proposed roadway excavations and

embankments in quantities and depths available and necessary to cover the work slopes. This work also includes reclamation, placing, spreading, and finishing of this topsoil.

625.2Materials

(1)Topsoil consists of loam, sandy loam, silt loam, silty clay lo am, or clay loam humus-bearing soils

adapted to sustain plant life, and ensure this topsoil is in a pH range of 6.0 to 7.0.

(2)Salvaged topsoil consists o f the loam, sandy loam, silt loam, silty clay loam or clay loam humus-

bearing soils available from overlying portions of areas to be occupied by the completed roadway.

625.3Construction

625.3.1 Preparing the Roadway for Topsoil

(1)Undercut or underfill all areas designated to receive topsoil to a degree that if covered to the required

depth with topsoil the finished work conforms to the required l ines, grades, slopes and cross-sections the plans and drawings show. 625.3.2 Processing Topsoil or Salvaged Topsoil

(1)Mow topsoil procurement areas to a height of approximately 6 i nches. Remove litter such as brush,

rock, and other materials that will interfere with subsequent vegetation establishment.

(2)Strip off the humus-bearing soil . Take care to minimize removi ng the underlying sterile soil. Then

stockpile the topsoil on the right-of-way or place it directly on the designated areas.

(3)Under the Salvaged Topsoil bid item, remove topsoil from excav ation areas and the roadway

foundation up to the quantity neces sary to cover the slopes for the bid items of Salvaged Topsoil and Topsoil. Salvage topsoil from e mbankment areas outside the road way foundation only if that additional material is required to cover the slopes.

(4)Use Salvaged Topsoil in excess of the plan quantity to replace plan quantities of Topsoil. Utilize

excess topsoil on the project or dispose of as specified in 205.3.12 . 625.3.3 Placing

(1)After preparing and finishing the areas designated for topsoil to the required lines, grades, slopes and

cross-section, place and spread the topsoil to a uniform depth as the plans show or the contract requires. If no depth is shown, place and spread the topsoil to a minimum depth of 4 inches in rural areas and a minimum depth of 6 inches in urban areas, or as the engineer designates.

(2)Break down all clods and lumps using the appropriate equipment to provide a uniformly textured soil.

(3)Where using either sod or seed mixture 40 ensure that, for the upper 2 inches, 100 percent of the

material passes a one-inch sie ve and at least 90 percent passes the No. 10 sieve.

(4)Remove rocks, twigs, foreign ma terial, and clods that cannot b e broken down. Dress the entire surface

to present a uniform appearance. The engineer will not require rolling.

(5)If light sandy soils are covered with heavier clay bearing loa m topsoil, then mix or blend the 2 types of

soils to a more or less homogen eous mixture by using the approp riate equipment.

625.4Measurement 625.4.1 Topsoil

(1)The department will measure Tops oil acceptably completed by the square yard or by the cubic yard,

whichever the contract specifies.

(2)If the department measures by the square yard, the measured qu antity shall equal the actual number

of square yards of topsoiled ar ea to the depth specified within the limits of construction designated on the plans, or in the contract , or as the engineer directs.

(3)If measured by the cubic yard, the department will measure mat erial in the vehicle. If the contractor

transports the material in vehi cles not adapted for measurement , then the departmen t will measure the material in cubic yards of volume in its original position computed by the method of average end areas with no correction for curvature; or if the engineer elects, by the method of truncated prisms.

Source: Wisconsin Standard Specifications for Highway and Structure Construction, 2019 Edition. Pages 384–384 of 601.

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623 Dust Control Surface Treatment

625 Topsoil and Salvaged Topsoil