Wisconsin WisDOT Standard Specifications (within FDM) — Section 521

Effective with the December 2018 Letting 307 2019 Standard Spec ifications Section 521 Corrugated Steel Culverts

521.1Description

(1)This section describes providing corrugated steel culvert incl uding pipe, pipe arch, cattle pass, and

steel apron endwalls.

521.2Materials

(1)Furnish corrugated steel pipe and steel apron end walls as follows:

- Corrugated steel culvert pipe, steel apron endwalls, aluminum coated corrugated steel culvert pipe, and other components conforming to AASHTO M36. - Polymer coated corrugated steel culvert pipe and pipe arch fabricated from zinc coated sheet steel conforming to AASHTO M218. Befor e fabrication, coat the sheets on both sides with polymer protective coating grade 250/250 according to AASHTO M246. Fabricate the p ipe according to AASHTO M245.

521.3Construction

521.3.1 General

(1)Construct as specified in 520.3 .

521.3.2 Coating Repair

(1)Repair damaged zinc c oating on cuts according to AASHTO M36.

(2)Repair damaged aluminum coating by blast cleaning, power sanding, or wire brushing the damaged

and surrounding areas. Apply zinc-rich paint to the cleaned are a within 24 hours and before rusting or soiling occurs, to a minimum thickness of 5 mils.

(3)Repair damaged polymer coating with a polymer coating similar to, and compatible with the original

coating, or with a tar base material or asphaltic mastic confor ming to AASHTO M243. 521.3.3 Handling Polymer Coated Pipe and Pipe Arch

(1)Minimize damage to polymer coatings during transportation, han dling, and installation. Store on

padded supports and pad objects placed against polymer coated m aterials.

521.4Measurement

(1)The department will measure the LF bid items under this section acceptably completed as specified for

pipe in 520.4 and the Apron Endwalls bid ite ms acceptably completed as speci fied for apron endwalls in 520.4 .

521.5Payment

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

items: ITEM NUMBER DESCRIPTION UNIT

521.0300 - 0699 Apron Endwalls for (type) Cross Drains Steel (s ize) (slope) EACH

521.1000 - 1399 Apron Endwalls for (type) Steel (size) EACH

521.1500 - 1899 Apron Endwalls for (type) Side Drains Steel (si ze) (slope) EACH

521.1900 Pipe Cattle Pass Corrugated Steel LF 521.3100 - 3299 Culvert Pipe Corrugated Steel (size) LF

521.3700 - 3899 Pipe Arch Corrugated Steel (size) LF

521.5100 - 5299 Culvert Pipe Corru gated Steel Polymer Coated (s ize) LF

521.5700 - 5899 Pipe Arch Polymer Coated Corrugated Steel (size ) LF

521.6100 - 6299 Culvert Pipe Corrugated Steel Alum inum Coated ( size) LF

521.6700 - 6899 Pipe Arch Corrugated Steel Aluminum Coated (siz e) LF

(2)The department will pay for the wo rk under this section as spe cified in 520.5 as follows:

- Pipe, pipe arch, cattle pass, and apron endwalls bid items. - Cast-in-place concrete and alternate endwall installations. - Water for compacti on and dust control. - Excavation and foundation ba ckfill at depths greater than 6 i nches below the culvert.

Effective with the December 2018 Letting 308 2019 Standard Spec ifications Section 522 Reinforced Concrete Culverts

522.1Description

(1)This section describes providing reinforced concrete culvert i ncluding pipe, cattle pass, and concrete

apron endwalls.

522.2Materials

(1)Furnish circular pipe, cattle pass, and circular apron endwalls conforming to AASHTO M170 and as

follows: - Pipe: furnish the cl ass of pipe the bi d item indicates. - Cattle pass: use class III reinforced concrete pipe. Construc t walkways as the plans show using cast-in- place grade A, A-FA, A-S, A-T, A -IS, A-IP, or A-IT concrete conforming to 501 as modified in 716. For walkway concrete, provide QMP fo r class III ancillary concrete as specified in 716. - Apron endwalls: conform to class II.

(2)Furnish horizontal elliptical pipe and elliptical apron endwal ls conforming to AASHTO M207 and as

follows: - Pipe: furnish the cl ass of pipe the bi d item indicates. - Apron endwalls: conform to class HE-II.

(3)Manufacture precast reinforced concrete pipe, cattle pass, and apron endwalls in a plant listed under

precast concrete fabricators on the department's APL . Conform to the spec ified AASHTO standard materials requirements except as follows: - Use concrete with 565 pounds or more cementitio us material pe r cubic yard. - The contractor may use cement conforming to 501.2.1 or may substitute for portl and cement a t the time of batching conforming to 501.2.6 for fly ash, 501.2.7 for slag, or 501.2.8 for other pozzolans. In either case the maximum total supplementary cementitious content is limited to 30 percent of the to tal cementitious content by weight.

(4)Furnish material for joint connections conforming to 520.2.6 .

522.3Construction

(1)Construct as specified in 520.3 . For horizontal elliptical pipe also conform to 520.3.2.1(6) . Do not use

pipe with different wall thick nesses in the same installations unless the plans or special provisions specify otherwise.

522.4Measurement

(1)The department will measure the LF bid items under this section acceptably completed as specified for

pipe in 520.4 and the Apron Endwalls bid ite ms acceptably completed as speci fied for apron endwalls in 520.4 .

522.5Payment