Wisconsin WisDOT Standard Specifications (within FDM) — Section 612

Effective with the December 2018 Letting 346 2019 Standard Spec ifications Section 612 Underdrains

612.1Description

(1)This section describes providing necessary subsurface drainage by constructing trenches, placing

designated pipes or drainage devices, and backfilling the trenc hes.

612.2Materials

612.2.1 General

(1)Furnish and use materials conforming to the following requirements. Furnish all pipe as perforated

unless the plans show or the spec ial provisions specify unperfo rated pipe.

(2)The contractor may furnish, unless the contract specifies othe rwise, one of the materials specified

here in 612.2 under the Pipe Under drain or Pipe Underdrain Unpe rforated bid items. 612.2.2 Corrugated Steel Pipe

(1)Provide corrugated steel pipe for underdrains conforming to type III culverts of AASHTO M36. Provide

perforations conforming to cla ss I. Use sheets not less than 0. 052 inch thick for 6- inch underdrains or 0.064 inch for 8-inch to 21-inch, inclusive, diameter underdrains.

(2)If installing the pipes underground, the contractor may furnis h coupling bands that have engineer-

approved wedging, clamping, or othe r fasteners, instead of bolts. 612.2.3 (Vacant) 612.2.4 Corrugated Aluminum Alloy Pipe

(1)Use corrugated aluminum alloy pipe for underdrains conforming to type III pipes of AASHTO M196.

Use a sheet not less than 0.060 inch thick. Provide perforations conforming to the requirements for class I.

(2)If installing the pipes underground, the contractor may furnis h coupling bands that have engineer-

approved wedging, clamping, or othe r fasteners, instead of bolts. 612.2.5 Corrugated Polyethylene Drainage Pipe

(1)Use corrugated polyethylene drainage pipe for underdrains conf orming to AASHTO M252, type CP

and AASHTO M294, type CP with class 2 perforations. 612.2.6 Polyvinyl Chloride Drainage Pipe

(1)Use polyvinyl chloride drainage pipe for underdrains conforming to AASHTO M278.

612.2.7 Acrylonitrile-Butadiene-Styrene Drainage Pipe

(1)Use acrylonitrile-butadiene-styrene drainage pipe for underdra ins conforming to ASTM D2680 , except

do not apply the requirements fo r joint tightness. Use pipe per forated according to AASHTO M278, if perforated pipe is required. 612.2.8 Geotextile

(1)Use a geotextile of knitted, wov en, or non-woven fibers of polyester, polypropylene, stabilized nylon,

polyethylene, or polyvinylidene chloride. Do not use slit film woven fabrics for th is work. The fabric must conform to the following requirements: TEST METHOD VALUE[1] Minimum grab tensile strength ASTM D4632 35 lb Apparent opening size ASTM D4751 No. 30 - 200 Minimum permittivity ___ 1.35 s-1 [1] All numerical values represent m inimum/maximum average roll values (i.e., the aver age of minimum test results on any roll in a lot sho uld conform to or exceed the mi nimum values in the table).

(2)Use knitted fabrics constructed from continuous yarn. Non-wove n fabrics may be needle-punched,

heat-bonded, resin -bonded, or combinati ons of these 3 types. Us e woven fabrics constructed from monofilament or multifilament yarns.

(3)Use geotextile wraps of knitted construction that form a seaml ess sleeve and fit tightly over the pipe. If

using geotextile wraps constructed from woven or non-woven fabr ic then tightly wrap and securely fix to the pipe.

(4)Clearly mark the geotextile r olls to identify the type of fabr ic.

(5)If the engineer determines it i s necessary, they can obtain fa bric samples for testing from the job site.

(6)If wrapping pipe underdrain, then the pipe shall conform to 612.2.5 for perforated underdrain.

612.2.9 Reinforced Concrete Apron Endwalls for Underdrain

(1)Use material for endwalls conforming to 504 or 522.2 .

Effective with the December 2018 Letting 347 2019 Standard Spec ifications 612.2.10 Backfill

(1)Furnish grade 1 granula r backfilll conforming to 209.2 .

612.3Construction

612.3.1 Excavation

(1)Construct trenches for the unde rdrain as near as possible to the locations, lines, and grades the plans

show. However, if necessary, the engineer may alter the locatio ns, lines, and grades to fit existing conditions.

(2)Begin trench excavation at t he outlet end of the underdrain an d proceed towards the upper end. Make

trenches wide enough to provide adequate free working space on each side of the pipe and to allow compacting the backfill around the pipe. Restore all areas exca vated below the established grade by adequately compacting and shaping a layer of suitable material. 612.3.2 Wrapping Pipe

(1)Under the Pipe Underdrain Wrapped bid items, provide pipe unde rdrain wrapped with geotextile.

(2)Wrap the geotextile securely around the pipe underdrain along its entire length in a way that allows no

water to enter the underdrain wi thout first passing through the fabric.

(3)Furnish geotextile in a cover t hat protects the fabric from ex posure to sunlight and abrasion due to

shipping and hauling. The contract or shall not expose the fabri c to the direct rays of the sun for more than 48 hours before covering.

(4)Cover torn or punctured fabric w ith suitable geotextile extending at least 12 inches in all directions

from the edge of the damaged fabric.

(5)Overlap all joints or splices i n the fabric a minimum of 18 in ches.

612.3.3 Laying Pipe

(1)In general, start laying pipe in the trench at the outlet end and proceed toward the upper end, true to

line and grade. Lay pipe with riv eted lap joints so the flow is over the lap of the sheets. Make joints between sections by fitting the ends as tightly as possible. Us e connecting bands to link the joints of corrugated steel or aluminum alloy pipe, and bolt or clamp firmly in place.

(2)Securely connect sections of c orrugated polyethylene pipe with fittings conforming to AASHTO M252

or M 294. The contractor may use solvent-cement joints, or gask eted joints, to join smooth plastic pipe. Secure corrugated polyethy lene pipe as necessary to preve nt displacement during laying and backfilling.

(3)Unless the engineer directs ot herwise, lay perforated drainage pipe with the perforations on the

underside of the pipe.

(4)Close the dead ends of pipe secu rely with concrete plugs, or e ngineer-approved caps, or plugs

fabricated from the same material used in the pipe.

(5)Protect discharge ends of pipes with securely fastened engineer-approved gratings or screens.

(6)Furnish and place engineer-appro ved connectors to make lateral connections.

612.3.4 Plowing In Pipe

(1)Under the Pipe Underdrain Wrappe d and Plowed bid items, place the wrapped pipe underdrain by

plowing and replacing the displa ced materials in a single operation. Place a wrapped underdrain in one continuous line except as the plans show or the engineer di rects. Connect the pipe underdrain with plastic pipe couplers.

(2)Construct the underdrai n at the location the plans show, and i n a relatively straight line. Make the

grade line follow as near as possible the grades the plans show or as the engineer directs to fit existing conditions.

(3)Use equipment capable of installing the underdrains to the required grade and location by plowing and

replacing the displaced materials, as determined in the field, all in a single operation. Use equipment that will not damage the existing pavement. Compact materials disturbed by the plowing operations to the engineer’s satisfaction.

(4)Reshape and re-compact the existing shoulder materials to the engineer’s satisfaction. Use

compaction equipment conforming to 301.3 .

(5)If using a tracked pull unit, then use rack pads o n the track on both pavement and shoulder.

(6)Close upgrade ends of the pipe with suitable caps to prevent backfill from entering.

(7)Install all couplings, tees, and other fittings to prevent the infiltration of backfill material and ensure

compatibility with the pipe.

Effective with the December 2018 Letting 348 2019 Standard Spec ifications 612.3.5 Backfilling

(1)Unless specified otherwise, cover perforated pipe immediately after laying with granular material, as

the plans specify, or as the engineer approves, to one foot above the top of the pipe. Make the granular fill a uniform depth on both sides of the pipe, and a minimum of 8 inches wider than the outside diameter of the pipe.

(2)If excavating for installing underdrains across private proper ty, or within the right-of-way beyond the

roadway limits, salvage the upper tillable or agricultural soil suitable for suppo rting vegetation and keep separate from other excavated material. Place this salvage d material in the top layer or layers of the backfill. Restore the entire area involved in the construction in a skilled and satisfactory manner.

(3)Use open-graded material requi red for trench backfill in the e dgedrain system for concrete pavements

as the plans show. 612.3.6 Drain Tile Exploration

(1)Under the Drain Tile Exploration bid item, excavate an explora tory trench to locate existing farm drain

tile.

(2)Perform the exploratory trenchi ng in sufficient advance of the grading operations to allow uninterrupted

progress of these operations.

(3)Construct the trench a minimum 12 inches wide and deep enough to intercept all existing tile lines.

Keep the trench open until the engineer orders it backfilled. U se the material obtained from the trench excavation for backfill. 612.3.7 Delivery

(1)Coordinate with the engineer to determine the sizes and lengths of pipe required before ordering or

delivering pipe. 612.3.8 Reinforced Concrete Apron Endwalls for Underdrain

(1)Under the Apron Endwalls for Underdrain Reinforced Concrete bi d items, provide reinforced concrete

apron endwalls at underdrain outlets.

(2)Install endwalls according to plan details, at the locations t he plans show.

612.3.9 Trench Underdrains

(1)Under the Underdrain Trench bi d item, excavate and backfill un derdrain trenches. B ackfill with No. 2

coarse aggregate conforming to 501.2.5.4 . Before backfilling place geot extile as the plans show.

612.4Measurement

(1)The department will measure the Pi pe Underdrain bid items by t he linear foot acceptably completed.

The department will measure alo ng the centerline of the pipe, c enter to center of junctions and fittings.

(2)The department will measure Underdrain Trench by the linear fo ot acceptably completed, measured

along the bottom of the trench. T he department will measure geo textile separately.

(3)The department will measure Drai n Tile Exploration by the line ar foot acceptably completed. The

measured quantity equals the number of li near feet of trench op ened at the engineer’s direction.

(4)The department will measure the Ap ron Endwalls for Underdrain Reinforced Concrete bid items as

each individual apron endwa ll acceptably completed.

612.5Payment

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

items: ITEM NUMBER DESCRIPTION UNIT

612.0100 - 0199 Pipe Underdrain (inch) LF

612.0200 - 0299 Pipe Underdrai n Unperforated (inch) LF

612.0400 - 0499 Pipe Underdrain Wrapped (inch) LF

612.0500 - 0599 Pipe Underdrain Wrapped and Plowed (inch) LF

612.0600 Underdrain Trench LF

612.0700 Drain Tile Exploration LF

612.0800 - 0899 Apron Endwalls fo r Underdrain Reinforced Concre te (inch) EACH

(2)Payment for the Pipe Underdrain bid items is full compensation for providing the underdrain; and for

excavating and backfilling. The department will pay separately for open-graded material required for trench backfill in the edgedrain system for concrete pavements under the Base Aggregate Open Graded bid item.

Effective with the December 2018 Letting 349 2019 Standard Spec ifications (3) Payment for Underdrain Trench is full compensation for excavating and backfilling the trench The department will pay for geotextile separately.

(4)Payment for Drain Tile Exploration is full compensation for all excavating, backfilling, and for restoring

the work site.

(5)Payment for the Apron Endwalls fo r Underdrain Reinforced Concr ete bid items is full compensation for

all excavating and backfilling; for concrete and reinforcement at each unit; and for disposing of all surplus material.

Effective with the December 2018 Letting 350 2019 Standard Spec ifications Section 614 Semi-rigid Barrier Systems and End Treatments

614.1Description

(1)This section describes providi ng steel guardrail systems inclu ding rail, terminal and transition

treatments, other roadside energy absorbing safety devices, and earthwork for barrier systems. This section also describes providing and removing temporary guardra il, adjusting existing guardrail, salvaging materials from existing installations.

614.2Materials

614.2.1 General

(1)Furnish materials conforming to the following:

Asphaltics urface ............................................. ............................................................................................ 465.2 Non-bituminous joint sealer ................................... ...................................................................................... 502.2 Structural steel and miscellaneous metals ................................................................................................... 506.2 Steel reinforcement ...................................................................................................................................... 505.2 Wood posts and o ffset blo cks .................................. .................................................................................... 507.2 Emulsified asphalt ........................................................................................................................................ 604.2

(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,

except under the Crash Cushions Temporary bid item the contract or may use SHES concrete as specified for SHES concrete repair and replacement in 416.2 . Provide QMP for class II ancillary concrete as specified in 716. If crash cushion manufacturer det ails specify c oncrete streng th for pads or blocks, provide QMP for class I structure concrete as specif ied in 715. Define class I structure sublots for each crash cushion location, apply the small quanti ty exceptions specified in 715.1.1.2 , base acceptance on individual sublot average strength, and adju st pay under 715.5.3 as specified for lots with less than 4 sublots.

(3)Furnish zinc dust/zinc oxide paint conforming to Federal specification TT-P-641.

(4)Furnish steel nuts conforming to ASTM A563, washers conforming to ASTM F436, grade 1, and bolts

conforming to ASTM A307. Ensure that the nuts, washers, and bolts are either hot-dip c oated according to AASHTO M232 class C or mechanically coated accordi ng to ASTM B695 class 50.

(5)Furnish zinc coated wire rope and fitting conforming to the pl ans and galvanized according to ASTM

A741.

(6)Before installation store galv anized components above ground l evel and away from surface run off.

The department may reject materia l if the zinc coating is physically damaged or oxidized.

(7)Provide manufacturer's drawings, and installation and maintena nce instructions when providing

proprietary systems.

(8)Furnish shop-applied type F reflective sheeting from the depar tment's APL.

(9)Furnish object markers conformi ng to the type 3 object marking pattern shown in the WMUTCD.

Add 614.2.1(10) to specify off set block-mounted guardrail reflectors from the department's approved products list. This change was implemented in ASP 6 effective with the December 2017 letting.

(10)Furnish guardrail reflectors from the department's APL.

614.2.2 Controlled Low-Strength Backfill

(1)Provide controlled lo w-strength ba ckfill consisting of a contr actor-designed cementitious mixture of fine

aggregate, fly ash, cement, water , and optional admixtures. Ensure that the resulting mixture hardens with 24 hours to the degree tha t it will support foot traffic a nd conforms to the following: TEST METHOD VALUE Strength ASTM D4832 40-80 psi in 28 days

(2)Submit design mix along withs trength test results to the engi neer at least 10 business days before

placing material. 614.2.3 Steel Rail and Fittings

(1)Furnish galvanized steel rail conforming to AASHTO M180 class A, type II beam using the single-spot

test coating requirements. Furnish steel for retrofit assemblies, anchor post assemblies, plates, anchor plates, post mounting brackets, and other structural steel comp onents conforming to 506.2.2.1 and hot-dip galvanized according to ASTM A123.

(2)For rail requiring bends with a radius less than 150 feet, ensure that the required bends are made in

the manufacturer's fabrication shop.

Source: Wisconsin Standard Specifications for Highway and Structure Construction, 2019 Edition. Pages 355–358 of 601.

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611 Catch Basins, Manholes, and Inlets

614 Semi-rigid Barrier Systems and End Treatments