Wisconsin WisDOT Standard Specifications (within FDM) — Section 526

Effective with the December 2018 Letting 311 2019 Standard Spec ifications Section 526 Temporary Structures

526.1Description

(1)This section describes the design, construction, maintenance, and removal of a temporary structure of

the width specified and of t he necessary waterway area.

526.2Materials

(1)Furnish materials conforming to part 5. The contractor may inc orporate used materials in the structure

if they are sound and suitable for the purpose intended.

526.3Construction

526.3.1 Permits and Coordination

(1)The contractor shall obtain any necessary permits as specified in 107.3 and shall coordinate with the

issuing agency in securing the permits and complying with the t erms of the permits. 526.3.2 Design

(1)Provide plans, signed and sealed by a professional engineer re gistered in the state of Wisconsin, for

all temporary structures. Submit one copy of plans to place on file. If the engineer r equests, submit 2 extra copies of plans for review before ordering materials or s tarting construction.

(2)The temporary structure shall span the stream and have dimensi ons sufficient to not constrict stream

flow during use. The basic desig n criteria shall provide for a 5-year frequency storm with 6 inches of backwater. The plans shall show the minimum bridge length between abutment sheet piling, and the resultant five-year frequency high water elevation. Determine t he minimum low superstructure elevation using the given high water elevation and considering local conditions. The structure shall have the minimum roadway width sp ecified in the special provisi ons as measured between the faces of the railings or curbs, and at right angles to the centerline . Provide vertical abutments designed to prevent spilling fill material i nto the stream. If building a temporary crossing over a stream or lake subject to boating use, constru ct it to provide horizontal and vertical clearance, as the jurisdictional agency may require, adequate for row boats and small power boats.

(3)Design, construct, and maintain temporary structures conformin g to AASHTO LRFD Bridge

Construction Specifications, Article 3.5. Design rail and posts according to the WisDOT Bridge Manual, chapter 30. 526.3.3 Temporary Structures

(1)Construct temporary structures conforming to part 5. Backfill conforming to 206.3.13 with structure

backfill conforming to 210.2 .

(2)Inspect temporary structures c onforming to the National Bridge Inspection Standards and the

department’s structure inspection manual before opening to traf fic. Perform additional inspections, as the department’s structure inspection manual requires, based on structure type and time in service. Submit inspection reports on department form DT2007 to the engineer and electronic copies to the department's bureau of structures maintenance section. Ensure t hat a department-certified active team leader, listed online in the department's highway structures information system, performs the inspections.

(3)Maintain temporary structures and approaches in place until no longer needed. Unless the engineer

directs otherwise, completely re move and dispose of as specifie d in 203.3.4 . Contractor-furnished materials remain the contract or's property upon removal.

526.4Measurement

(1)The department will measure the Te mporary Structure bid items as a single lump sum for each

structure accept ably completed.

526.5Payment

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

items: ITEM NUMBER DESCRIPTION UNIT

526.0100 Temporary Structure (station) LS

(2)Payment for the Temporary Structure bid items is full compensation for providing a temporary

structure including design and construction; for backfilling with structure backfill; for maintaining; and for removing when no longer needed.

Effective with the December 2018 Letting 312 2019 Standard Spec ifications Section 527 Structural Plate Pipe and Pipe Arches

527.1Description

(1)This section describes providing structural plate pipe, or str uctural plate pipe arches.

527.2Materials

(1)Furnish structural plate pipe o r structural plate pipe arches fabricated from zinc coated corrugated

steel or aluminum alloy structural plates unless the contracts pecifies otherwise.

(2)Furnish erection bolts and zinc coated corrugated steel plate conforming to AASHTO M167.

(3)Furnish erection bolts and aluminum alloy structural plate con forming to AASHTO M219, except do not

use aluminum bolts and nuts.

(4)Furnish plates of the thickness the plans show or the contract specifies.

(5)Furnish pipe arches, for a desi gnated span width, conforming t o the span and rise dimensions, and

the radii of curvatures the contract designates.

(6)Unless the contract specify otherwise, furnish structural plat e pipe and pipe arches with square ends.

(7)Repair damaged spelter coating according to AASHTO M167.

527.3Construction

527.3.1 Fabrication 527.3.1.1 Description of Plates

(1)Plates shall consist of zinc c oated corrugated steel or alumin um alloy structural units. Use the

manufacturer’s standard plate wi dth and length for the size structure specified, and stagger the joints either circumferentially or longi tudinally. Measure plate width circumferentially, or parallel to the highway centerline. Plates sha ll include an approximately 2-inc h lip beyond each end crest, resulting in the given structure’s actual length being approximately 4 inches longer than the nominal length, except if skewed or beveled. Connect the plates at longitudinal and circumferential seams by bolts.

(2)Provide the radius of curvature the plans show.

527.3.1.2 Forming and Punching Plates

(1)Curve each plate to the proper radius and punch the bolt holes so all plates curved to the same radius,

except end plates, are interchangeable during erection.

(2)Place bolt holes along those plate edges that form longitudina l seams in rows 2 inches apart, with one

row in the valley and one in t he crest of the corrugations. Sta gger the bolt holes between crest and valley for steel plates.

(3)Space the bolt holes along thos e plate edges that form the cir cumferential seams in the finished

structure approximately 10 inches.

(4)Place the center of the hole no closer to the plate edge than 1 3/4 times the diameter of the bolt.

(5)Punch the bolt holes in steel pl ates 3/16 inch to 9/32 inch in thickness, inclusive, before zinc coating

the plates.

(6)If the completed structure is a circular pipe, curve the plates so that if bolted together they form true

circles of the required diameters.

(7)Cut plates for forming skewed or sloped ends to produce the angle of skew or slope specified. Keep

burned edges free from oxide and burrs. Place legible identification numerals on eac h plate part to designate its proper position in the finished structure. 527.3.2 Erection

(1)If erecting a pipe or pipe arch structure in a trench, make the trench a sufficient w idth to allow thorough

backfill compaction.

(2)Bed the pipe or pipe arch in an earth foundation of uniform de nsity, carefully shaped by a template

supported at the spec ified grade to fit the lower plates of the structure. If rock, in either ledge or boulder form is encountered, remove it below grade and replace with foundation backfill conforming to 520.2 to provide compacted bedding of a thickness of not less than 1 /2 inch for every foot of fill above the structure, with a minimum a llowable thickness of 8 inches. If there is no stable foundation at the grade established, remove and r eplace unstable soil under the s tructure and for a width of at least one diameter on each side of the structure with foundation backfill , and compact to provide adequate support for the structure, unless the plans or special provisio ns specify other special construction methods.

(3)Provide the camber the plans show or the engineer specifies in the foundation bed for a pipe or pipe

arch.

Source: Wisconsin Standard Specifications for Highway and Structure Construction, 2019 Edition. Pages 320–320 of 601.

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525 Corrugated Aluminum Culverts

527 Structural Plate Pipe and Pipe Arches