Wisconsin WisDOT Standard Specifications (within FDM) — Section 604

Effective with the December 2018 Letting 333 2019 Standard Spec ifications Section 604 Slope Paving

604.1Description

(1)This section describes paving embankment slopes and waterways with concrete slope paving or

crushed aggregate slope paving to control and prevent erosion o f the slopes and waterways.

604.2Materials

(1)Furnish materials conforming to the following:

Water ......................................................... .................................................................................................. 501.2 Crushed ag gregate ............................................. ......................................................................................... 501.2 Select crushed material ....................................... ........................................................................................ 312.2 Expansion jo int filler ........................................ .......................................................................................... 415.2.3 Asphaltic materials ....................................................................................................................................... 450.2

(2)Furnish grade A, A-FA, A-S, A-T , A-IS, A-IP, or A-IT concrete conforming to 501 as modified in 716.

Provide QMP for class III ancilla ry concrete as specified in 716.

(3)Under the Slope Pavi ng Crushed Aggregate bid item, furnish crushed stone or crushed gravel

conforming to coarse concrete aggr egate size No. 2 but with the additional requirement that at least 75 percent of the particles, by count, have at least one fractured face. Determine fracture according to ASTM D5821 as modified in CMM 8-60 .

(4)Under the Slope Paving Select C rushed Material bid item, furni sh crushed rock or concrete conforming

to 312.2 except the material need not be from a department-approved sou rce.

(5)The requirements of 501.2.5.4.3 relating to soundness and wears hall not apply to crushed aggr egate

slope paving.

(6)Furnish emulsified asphalt, type RS 1 or RS 2 conforming to AASHTO M140, or type CRS 1 or CRS 2

conforming to AASHTO M208 for the asphaltic material in crushed aggregate slope paving.

604.3Construction

604.3.1 General

(1)Prepare the foundation for t he paving so that the finished paving surface conforms to the elevation,

lines, grades and cross-sections the plans show, and the engineer directs. Prepare the foundation by excavating high places and backf illing and compacting low places until it conforms to the required elevation and slope, and is unifo rm in density. Dispose of exce ss excavated material as specified for disposal of surplus or unsuitable material in 205.3.12 , or as the engineer directs.

(2)If the plans specify headers, cut -off walls, or similar appurtenances, construct them as the plans show.

(3)Unless directed otherwise, place one-inch expansion joint filler where slope paving abuts piers,

abutments, or other solid fixtures. 604.3.2 Crushed Aggregate Slope Paving

(1)Place the crushed aggregate on the prepared foundation. Use me chanical or hand methods to shape

and consolidate it to provide a stable, even, and uniform surface.

(2)Apply the asphaltic material uni formly over the surface of the paving at a rate just sufficient to ensure

penetration and binding of the parti cles in the upper 2 inches of the aggregate blanket. Avoid excessive application of asphalti c material and exercise care t o prevent material run-off. Protect the surface of the adjacent structure to prevent splattering or dis coloration by asphaltic material, and immediately remove material accumulations at the foot of the sl ope paving. 604.3.3 Select Crushed Material Slope Paving

(1)Place the select crushed material on the prepared foundation. Use mechanical or hand methods to

shape and consolidat e it to provide a stable, even, and uniform surface. Do not apply asphaltic material binder. 604.3.4 Concrete Slope Paving 604.3.4.1 General

(1)Place the concrete between fo rms set to grade on the prepared foundation. Make the finished

concrete slab a minimum 4 inches thick. Ensure the concrete is a workable consistency when placed, but dry enough to retain its position when struck off. Strike-o ff the concrete with a straightedge supported on the forms and finish with a wood float.

Effective with the December 2018 Letting 334 2019 Standard Spec ifications (2) Cure concrete slope paving as specified in 415.3.12 , except substitute type 1-D clear or translucent curing compound otherwise conforming to 415.2.4 . During cold weather, protect the concrete as specified in 415.3.13 for concrete pavement. 604.3.4.2 Waterways

(1)Reinforce the concrete slope paving as specified in plan detai ls. Construct joints at locations and as

the plans show or as the engineer directs. 604.3.4.3 Structures

(1)Form planes of weakness or fals e joints in the concrete by sco ring the finished surface at least 1/2

inch deep with an appropriate t ool. Form blocks or squares approximately the width of the pour. Provide an edge-finish on joints or false joints. The contractor shall not reinforce the slope pavement unless the plans designate otherwise or as the contract provides.

604.4Measurement

(1)The department will measure the Sl ope Paving bid items under t his section by t he square yard

acceptably completed. The measured area equals the sum of the p avement areas, measured in the plane of the surface. The department will not measure headers o r cut-off walls.

604.5Payment

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

items: ITEM NUMBER DESCRIPTION UNIT

604.0400 Slope Paving Concrete SY

604.0500 Slope Paving Crushed Aggregate SY

604.0600 Slope Paving Select Crushed Material SY

(2)Payment for the Slope Paving bi d items is full compensation fo r excavating and backfilling required for

preparing the paving foundation ; for disposing of surplus mater ials; for providing materials for concrete; for mixing, placing, fini shing, curing, and protectin g concrete; for providing reinforcement,; for providing, handling, placing, and consolidating the crushed aggregate or select crushed material; and for providing, handling, heating, and applying asphaltic ma terial binder.

Effective with the December 2018 Letting 335 2019 Standard Spec ifications Section 606 Riprap

606.1Description

(1)This section describes furnishing and placing riprap.

606.2Materials

606.2.1 Riprap Stone

(1)Furnish durable field or quarry stone that is sound, hard, dense, resistant to the acti on of air and water,

and free of seams, cracks, or othe r structural defects. Use sto ne pieces with a length and width no more than twice the thickness. D o not place material without th e engineer's approval of the stone quality, size, and shape.

(2)The department will determine the average dimension of stone p ieces by averaging measurements of

thickness, width, and length. F urnish stones conforming to the size requirements for the riprap grade the plans show. Size requirements are expressed as the percent of the gross in-place riprap volume occupied by stones within aver age dimension size ranges for eac h riprap grade as follows: AVERAGE DIMENSION RANGES FOR EACH RIPRAP GRADE FRACTION OF GROSS LIGHT MEDIUM HEAVY EXTRA-HEAVY IN-PLACE RIPRAP RIPRAP RIPRAP RIPRAP RIPRAP VOLUME OCCUPIED inches inches inches inches BY STONES >16 >20 >25 >30 0% 11 - 13 14 - 16 18 - 20 22 - 25 10% - 14% 9 - 11 11 - 14 14 - 18 18 - 22 15% - 21% 4 - 9 5 - 11 6.5 - 14 8 - 18 20% - 28% <4 <5 <6.5 <8 5% - 7% <1 <1 <1 <1 2% or less

(3)The contractor may sub stitute waste concrete slabs for stone. Furnish sound concrete, free of

protruding reinforcement, and co nforming to the size requiremen ts specified for stone. 606.2.2 Riprap Grout

(1)Furnish an air-entrained morta r or concrete to fill the voids between riprap stones in grouted riprap.

Conform to the physical requirem ents for component materials as specified in 501.2 except furnish fine aggregate or a combination o f fine and coarse aggregate wi th a gradation that results in a grout with a consistency that allows c omplete filling of the riprap v oids.

(2)Certify that the grout conforms to the following mixture requi rements:

- Contains 470 pounds or more of portland cement per cubic yard of grout. The contractor may substitute class C fly ash for up to 30 percent of the required portland c ement. - Contains only enough water to a chieve a 3-inch slump. Any additional workability required to completely fill the riprap voids must be achieved with admixture without increa sing the w/cm ratio. - Contains 9 percent or more air for mixes with a nominal top s ize aggregate less than 3/8 inch or 7 percent or more air for a mix with 3/8 inch or larger aggregate.

606.3Construction

606.3.1 General

(1)Prepare the bed for the riprap by excavating, shaping the slopes, and constructing the toe for riprap

installation. After placing the riprap, restore the surface of adjacent work and dispose of surplus material. 606.3.2 Placing Light Riprap

(1)If laying stone above the waterl ine, place it by hand. Lay it with close, broken joints and firmly bed it in

the slope and agains t the adjoining stones . Lay the stones perp endicular to the slope with ends in contact. Compact the riprap thoroughly as construction progresses. Make the finished surface even and tight. Place larger stone in l ower courses. Chink spaces be tween stones by firmly ramming spalls into place. If placing riprap o ver geotextile, use type R and c onform to 645.3.1.6 .

(2)Unless specified otherwise, make riprap at least one foot thic k, measured perpendicular to the slope.

(3)Do not place riprap against, or in contact with, concrete surf ace before the end of the concrete’s curing

and protection period. 606.3.3 Placing Medium, Heavy, and Extra-Heavy Riprap

(1)The contractor may place medi um, heavy, and extra-heavy riprap by any mechanical means that

produce a completed job within reasonable tolerances of the typ ical section the plans show. Limit

Source: Wisconsin Standard Specifications for Highway and Structure Construction, 2019 Edition. Pages 342–343 of 601.

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603 Concrete Barrier

606 Riprap