601CULVERTS AND STORM DRAINS

601

SECTIO N 601 – CULVERTS AND STOR M DRAINS 601.0 1 DESCRIPTION . This work shall consist of the construction, cleaning, and reconditioning or reconstruction of culverts and storm drains, hereinafter referred to as pipe. 601.0 2 MATERIALS . Materials shall meet the requirements of the following subsections: Mortar, Type II ................................ ................................ ................................ ........... 707.0 1(c) Rubber Gaskets ................................ ................................ ................................ .......... 707.09 Reinforced Concrete Pipe ................................ ................................ .......................... 710.01 Reinforced Concrete Pipe End Sections ................................ ................................ ....710.02 Corrugated Polyethylene Pipe (CPEP) ................................ ................................ ......710.03 Corrugated Polypropylene Pipe (CPPP) ................................ ................................ ....710.0 6 Corrugated Steel Pipe, Pipe Arches, and Underdrains ................................ .............. 711.01 Corrugated Aluminum Alloy Pipe, Pipe Arches, and Underdrains ........................... 711.02 Polymeric Coated Corrugated Steel Pipe and Pipe Arches ................................ .......711.03 Coal -Tar Based Coating ................................ ................................ ............................. 711.0 4 All units in each pipe or pipe arch installation, including elbows, end sections, coupling bands, and reducer units, shall b e of the same material , except that corrugated steel pipe end sections shall be used with polymeric coated corrugated steel pipe and pipe arches. When either corrugated steel pipe or pipe arches with 5 inch × 1 inch corrugations are shown on the Plans, the Contractor may substitute pipe or pipe arches of the same thickness with 3 inch × 1 inch corrugations at no additional compensation. 601.0 3 GENERAL REQUIREMENTS . Care shall be exercised when unloading pipes from delivery trucks and moving pipes to their final position . If the Engineer rejects damaged pipe, new pipe shall be furnished by the Contractor at no additional cost to the Agency. Unless otherwise directed by the Engineer, the Contractor shall provide for the temporary diversion of water to permit the installation of the pipe in a reasonably dry trench. The location of all pipe installations shall be approved by the Engineer.

601

6-2Where existing pipe is to b e retained or re -laid and it becomes damaged due to the fault of the Contractor,

it shall be replaced with new pipe at the Contractor’s expense. Aluminum, aluminized, or aluminum -zinc alloy coated pipe that is to be in contact with concrete or mortar shall have the contact surfaces thoroughly coated with an approved barrier coating recommended by the pipe manufacturer or approved by the Agency’s Materials Testing and Certification Section . This coating shall be dry before installation. Where the protective coating has been removed from the metal, either by cutting, burning, welding, placing, or any other means, it shall be repaired by thoroughly cleaning with a wire brush and treating the damaged areas in accordance with AASHTO M 36 or in accordance with AASHTO M 245 for damaged polymeric coatings. 601.0 4 EXCAVATION . Where pipe is to be laid below the existing ground line, a trench shall be excavated to the required depth and to a width sufficient to allow for joining of the pipe and compaction of the bedding and backfill material under and around the pipe. The completed trench bottom shall be firm for its full length and width. If shown on the Plans or directed by the Engineer, unsuitable foundation material encountered below the normal grade of the culvert bed shall be removed and replaced with granular backfill for s tructures , or other specified or approved material . Bedrock, rocky or gravelly soil, hard pan, or other unyielding foundation material encountered at the normal grade of the culvert bed shall be removed and replaced with granular backfill for structures to a width equal to the inside diameter of the pipe plus 24 inches and to a minimum depth of 12 inches below the pipe grade, unless otherwise shown on the Plans or directed by the Engineer. 601.0 5 PLACEMENT . No pi pe shall be placed until the trench and the prepared foundation have been approved by the Engineer. Placement shall begin at the outlet end . The bottom of the pipe shall be in contact with the bedding throughout its full length . Bell or grooved ends of rig id pipes and the outside circumferential laps of flexible pipe shall be placed facing upstream . The longitudinal laps or seams of riveted pipe shall be at the sides. The handling holes in concrete pipes shall be filled with a precast plug, sealed, and cove red with mastic or mortar.

601 6-3 601.0 6 JOININ G PIPE.

specified . Pipe sections shall be joined so that the ends are fully entered and the inner surfaces are reasonably flush and even. Joints shall be made with Portland cement mortar, Portland cement grout, rubber gaskets, or any one type as specified and approved by the Engineer . Joints in co ncrete pipes shall be thoroughly wetted before mortar or grout is applied. Mortar joints shall be made with an excess of mortar to form a bead around the outside of the pipe and finished smooth on the inside . For grouted joints, molds or runners shall be u sed to retain the poured grout . Rubber ring gaskets shall be installed so as to form a flexible , watertight seal. When Portland cement mixtures are used, the completed joints shall be protected against rapid drying by suitable curing materials and protecte d from freezing until adequate set and strength have been reached, as determined by the Engineer. The first three sections, at ends of culverts that are not restrained by drop inlets or catch basins, shall be connected at the springline on each side of the pipe to restrain movement of the sections . If an end section is used, it shall be one of the three sections to be connected. The connecting devices shall be at least 12 feet in length when used with 7 -1/2 foot minimum length sections and at least 10 feet in length when used with 6 f oot minimum length sections . Each device shall be securely anchored to the pipe, with minimum slack in the device and the joints . The anchoring points shall be a minimum of 18 inches from the end of the pipe sections and the flared end sections . Each end of the device shall be anchored with a 1 -inch bolt with a nut and washer, or its equivalent, through the section wall. Each device shall be a steel strap with an effective cross -sectional area of 0.23 square inches for all pipes 48 inches in diameter or smaller . For pipes larger than 48 inches in diameter, the required steel area for restraining devices shall be as shown on the Plans. Alternate designs of restraining devices and anchori ng hardware will be considered for approval if they provide equivalent restraining properties and durability. Restraining devices shall be placed on the outside of the pipe . Any bending of the device for proper installation shall be done by the cold bendin g method . Holes in the pipe and end sections, required for the anchor bolts, may be drilled in the field.

601 6-4 (b) Metal Pipe . Metal pipes shall be firmly joined by coupling bands. Pipes with an eff ective diameter greater than 36 inches shall be joined by coupling bands that fully engage the second full corrugation from the end of each pipe. Pipes on steep grades (greater than 14%) will be joined either by 24 inch wide coupling bands or by bands addi tionally equipped with silo rods or cables for positive attachment. In all cases, ends of pipes joined by coupling bands shall be as close together as the corrugations will allow.

and approved by the pipe manufacturer. Couplings and fittings shall provide sufficient longitudinal strength to preserve pipe alignment and prevent separation at the joints.

designed and approved by the pipe manufacturer. Couplings and fittings shall provide sufficient longitudinal strength to preserve pipe alignment and prevent separation at the joints. 601.0 7 BACKFILLING . Installed pipe will be inspected and approved before any backfill is placed. Any pipe found to be damaged or out of alignment shall be removed and replaced or re -laid without additional compensation. Unless otherwise shown on the Plans or directed by the Engineer, the backfill material shall be fine selected compactable soil from excavation when available, or granular backfill for structures . This material shall be placed to a height of 24 inches over the pipe. No stones more than 3 inches in diameter shall be placed in contact with the pipe . Rock fill or boulders shall not be placed within 24 inches of the outside of the pipe. The backfill material shall b e placed in 6 -inch-thick layers and compacted in accordance with Subsection

203.11(d) using a mechanical tamper . Care shall be exercised to thoroughly compact the material under

the haunches of the pipe . The backfill shall be placed evenly on both sides of the pipe for its full length. In embankment sections the fill shall be compacted for a width on each side of the pipe equal to at least twice the horizontal inside diameter of the pipe or 12 feet, whichever is less . Fill at the sides of the pipe may be co mpacted by operating compaction equipment longitudinally parallel with the pipe, provided care is taken to avoid displacement or injury to the pipe.

601

6-5All pipes shall be protected by a cover of fill 4 feet thick before heavy equipment or traffic is permitted to

cross during construction. Whenever this cover extends above the subgrade, the Contractor shall temporarily place earth which shall be removed when necessary to complete the work in accordance with the details shown on the Plans or as directed by the Engineer. Any deviation from this practice shall have prior approval by the Engineer. However, compliance with the 4 -foot protective cover requirement shall not relieve the Contractor of any responsibility concerning damage to the pipe. 601.0 8 CLEANIN G CULVERTS . Pipe culverts at the locations shown on the Plans, or as directed by the Engineer, shall have the silt, debris, and other material removed and disposed of by methods that do not damage the pipe. With the approval of the Engineer, all or part of a pipe designated to be cleaned in place may be removed, cleaned, and re -laid in accordance with these specifications. In these cases, the Contractor shall furnish all material required to replace damaged pipes and joints, perform all ex cavation and backfill, and re -lay the pipe, all at the Contract unit price for Cleaning Culvert Pipe, In -Place. However, if the Engineer determines that the pipe must be replaced, through no fault of the Contractor, replacement will be paid for under the a ppropriate Contract items. 601.0 9 METHO D OF MEASUREMENT . The quantities of culverts and storm drains to be measured for payment will be the number of linear feet used in the complete and accepted work , as shown on the Plans or as ordered by the Engineer . No allowance will be made for growth in length at joints when this increase exceeds the ordered length. When it is necessary to cut pipe in the field, the quantity of pipe to be measured

for payment will be the length necessary, rounded up to the next whole foot increment.

The quantity of Re-Laying Pipe Culverts of the size specified to be measured for payment will be the

number of linear feet of pipe re-laid in the complete and accepted work.

The quantities of pipe elbows and end sections to be measured for payment will be the number of each

size and type of unit installed in the complete and accepted work.

The quantity of Cleaning Culvert Pipe, In-Place to be measured for payment will be the total length of

pipe for each pipe acceptably cleaned, as determined along the flow line of the pipe. The cost to clean

material from pipes as the result of on-project construction activities shall be at the Contractor’s expense.

601

601.10BASIS OF PAYMENT. The accepted quantities of culverts and storm drains of the type and size

specified will be paid for at the respective Contract unit price per linear foot.

The accepted quantity of Re-Laying Pipe Culverts of the size specified will be paid for at the Contract

unit price per linear foot.

The accepted quantities of pipe elbows and end sections of the type and size specified will be paid for at

the respective Contract unit price each.

Payment will be full compensation for fabricating, furnishing, transporting, handling, and placing the

material specified to include bituminous or other coating, coupling bands, joint material, cutting when

necessary, and for furnishing all labor, tools, equipment, and incidentals necessary to complete the work.

Excavation, including backfill operations and the disposal of excavated material (excess or unsuitable for

backfill), will be paid for separately and in accordance with Section 204.

Anchor bolts, required in the construction of headwalls, will not be paid for separately but will be

considered incidental to the Contract unit price for the pipe on which they are required.

The accepted quantity of Cleaning Culvert Pipe, In-Place will be paid for at the Contract unit price per

linear foot for the specified size of pipe. Payment will be full compensation for cleaning the pipe; for

excavating, backfilling, and re-laying the pipe, if necessary; and for furnishing all labor, tools, equipment,

and incidentals necessary to complete the work.

Payment will be made under:

Pay Item Pay Unit

601.0005 12 Inch CSP .064 (2-2/3 × 1/2) .................................................................Linear Foot

10 15 Inch CSP .064 (2-2/3 × 1/2) .................................................................Linear Foot

11 15 Inch CSP .079 (2-2/3 × 1/2) .................................................................Linear Foot

15 18 Inch CSP .064 (2-2/3 × 1/2) .................................................................Linear Foot

16 18 Inch CSP .079 (2-2/3 × 1/2) .................................................................Linear Foot

25 24 Inch CSP .064 (2-2/3 × 1/2) .................................................................Linear Foot

36 30 Inch CSP .079 (2-2/3 × 1/2) .................................................................Linear Foot

46 36 Inch CSP .079 (2-2/3 × 1/2) .................................................................Linear Foot

52 42 Inch CSP .109 (2-2/3 × 1/2) .................................................................Linear Foot

57 48 Inch CSP .109 (2-2/3 × 1/2) .................................................................Linear Foot

68 60 Inch CSP .138 (2-2/3 × 1/2) .................................................................Linear Foot

601.0132 60 Inch CSP .109 (3 × 1) ..........................................................................Linear Foot

601

Pay Item Pay Unit

601.0205 12 Inch CAAP .060 (2-2/3 × 1/2) .............................................................Linear Foot

10 15 Inch CAAP .060 (2-2/3 × 1/2) .............................................................Linear Foot

11 15 Inch CAAP .075 (2-2/3 × 1/2) .............................................................Linear Foot

15 18 Inch CAAP .060 (2-2/3 × 1/2) .............................................................Linear Foot

16 18 Inch CAAP .075 (2-2/3 × 1/2) .............................................................Linear Foot

17 18 Inch CAAP .105 (2-2/3 × 1/2) .............................................................Linear Foot

25 24 Inch CAAP .060 (2-2/3 × 1/2) .............................................................Linear Foot

26 24 Inch CAAP .075 (2-2/3 × 1/2) .............................................................Linear Foot

27 24 Inch CAAP .105 (2-2/3 × 1/2) .............................................................Linear Foot

36 30 Inch CAAP .075 (2-2/3 × 1/2) .............................................................Linear Foot

37 30 Inch CAAP .105 (2-2/3 × 1/2) .............................................................Linear Foot

46 36 Inch CAAP .075 (2-2/3 × 1/2) .............................................................Linear Foot

52 42 Inch CAAP .105 (2-2/3 × 1/2) .............................................................Linear Foot

57 48 Inch CAAP .105 (2-2/3 × 1/2) .............................................................Linear Foot

62 54 Inch CAAP .105 (2-2/3 × 1/2) .............................................................Linear Foot

68 60 Inch CAAP .135 (2-2/3 × 1/2) .............................................................Linear Foot

601.0305 30 Inch CAAP .060 (3 × 1) .......................................................................Linear Foot

06 30 Inch CAAP .075 (3 × 1) .......................................................................Linear Foot

10 36 Inch CAAP .060 (3 × 1) .......................................................................Linear Foot

16 42 Inch CAAP .075 (3 × 1) .......................................................................Linear Foot

42 72 Inch CAAP .105 (3 × 1) .......................................................................Linear Foot

601.0405 12 Inch PCCSP .064 (2-2/3 × 1/2) ............................................................Linear Foot

10 15 Inch PCCSP .064 (2-2/3 × 1/2) ............................................................Linear Foot

15 18 Inch PCCSP .064 (2-2/3 × 1/2) ............................................................Linear Foot

16 18 Inch PCCSP .079 (2-2/3 × 1/2) ............................................................Linear Foot

25 24 Inch PCCSP .064 (2-2/3 × 1/2) ............................................................Linear Foot

26 24 Inch PCCSP .079 (2-2/3 × 1/2) ............................................................Linear Foot

27 24 Inch PCCSP .109 (2-2/3 × 1/2) ............................................................Linear Foot

36 30 Inch PCCSP .079 (2-2/3 × 1/2) ............................................................Linear Foot

37 30 Inch PCCSP .109 (2-2/3 × 1/2) ............................................................Linear Foot

46 36 Inch PCCSP .079 (2-2/3 × 1/2) ............................................................Linear Foot

47 36 Inch PCCSP .109 (2-2/3 × 1/2) ............................................................Linear Foot

52 42 Inch PCCSP .109 (2-2/3 × 1/2) ............................................................Linear Foot

57 48 Inch PCCSP .109 (2-2/3 × 1/2) ............................................................Linear Foot

601.0526 54 Inch PCCSP .079 (3 × 1) .....................................................................Linear Foot

27 54 Inch PCCSP .109 (3 × 1) .....................................................................Linear Foot

42 72 Inch PCCSP .109 (3 × 1) .....................................................................Linear Foot

601

Pay Item Pay Unit

601.0615 18 Inch PCCSP(PI) .064 (2-2/3 × 1/2) ......................................................Linear Foot

25 24 Inch PCCSP(PI) .064 (2-2/3 × 1/2) ......................................................Linear Foot

36 30 Inch PCCSP(PI) .079 (2-2/3 × 1/2) ......................................................Linear Foot

46 36 Inch PCCSP(PI) .079 (2-2/3 × 1/2) ......................................................Linear Foot

57 48 Inch PCCSP(PI) .109 (2-2/3 × 1/2) ......................................................Linear Foot

601.0805 12 Inch RCP Class III ...............................................................................Linear Foot

06 12 Inch RCP Class IV ...............................................................................Linear Foot

10 15 Inch RCP Class III ...............................................................................Linear Foot

11 15 Inch RCP Class IV ...............................................................................Linear Foot

15 18 Inch RCP Class III ...............................................................................Linear Foot

16 18 Inch RCP Class IV ...............................................................................Linear Foot

17 18 Inch RCP Class V ................................................................................Linear Foot

20 21 Inch RCP Class III ...............................................................................Linear Foot

21 21 Inch RCP Class IV ...............................................................................Linear Foot

25 24 Inch RCP Class III ...............................................................................Linear Foot

26 24 Inch RCP Class IV ...............................................................................Linear Foot

27 24 Inch RCP Class V ................................................................................Linear Foot

35 30 Inch RCP Class III ...............................................................................Linear Foot

36 30 Inch RCP Class IV ...............................................................................Linear Foot

37 30 Inch RCP Class V ................................................................................Linear Foot

45 36 Inch RCP Class III ...............................................................................Linear Foot

46 36 Inch RCP Class IV ...............................................................................Linear Foot

50 42 Inch RCP Class III ...............................................................................Linear Foot

55 48 Inch RCP Class III ...............................................................................Linear Foot

66 60 Inch RCP Class IV ...............................................................................Linear Foot

70 66 Inch RCP Class III ...............................................................................Linear Foot

601.0905 12 Inch CPEP ............................................................................................Linear Foot

10 15 Inch CPEP ............................................................................................Linear Foot

15 18 Inch CPEP ............................................................................................Linear Foot

20 24 Inch CPEP ............................................................................................Linear Foot

601.2603 8 Inch CPEP(SL).......................................................................................Linear Foot

05 12 Inch CPEP(SL).....................................................................................Linear Foot

10 15 Inch CPEP(SL).....................................................................................Linear Foot

15 18 Inch CPEP(SL).....................................................................................Linear Foot

20 24 Inch CPEP(SL).....................................................................................Linear Foot

25 30 Inch CPEP(SL).....................................................................................Linear Foot

30 36 Inch CPEP(SL).....................................................................................Linear Foot

601

Pay Item Pay Unit

35 42 Inch CPEP(SL).....................................................................................Linear Foot

40 48 Inch CPEP(SL).....................................................................................Linear Foot

45 54 Inch CPEP(SL).....................................................................................Linear Foot

50 60 Inch CPEP(SL).....................................................................................Linear Foot

601.2805 12 Inch CPPP(SL) .....................................................................................Linear Foot

10 15 Inch CPPP(SL) .....................................................................................Linear Foot

15 18 Inch CPPP(SL) .....................................................................................Linear Foot

20 24 Inch CPPP(SL) .....................................................................................Linear Foot

25 30 Inch CPPP(SL) .....................................................................................Linear Foot

30 36 Inch CPPP(SL) .....................................................................................Linear Foot

35 42 Inch CPPP(SL) .....................................................................................Linear Foot

601.3236 35 Inch × 24 Inch CAAPA .075 (2-2/3 × 1/2) ..........................................Linear Foot

58 57 Inch × 38 Inch CAAPA .135 (2-2/3 × 1/2) ..........................................Linear Foot

601.3436 35 Inch × 24 Inch PCCSPA .079 (2-2/3 × 1/2) .........................................Linear Foot

57 57 Inch × 38 Inch PCCSPA .109 (2-2/3 × 1/2) .........................................Linear Foot

601.4252 49 Inch × 33 Inch CAAPA(SL) .105 (2-2/3 × 1/2) ...................................Linear Foot

58 57 Inch × 38 Inch CAAPA(SL) .135 (2-2/3 × 1/2) ...................................Linear Foot

601.4457 57 Inch × 38 Inch PCCSPA(SL) .109 (2-2/3 × 1/2) .................................Linear Foot

601.5005 12 Inch CSP Elbow .064 (2-2/3 × 1/2) .....................................................Each

10 15 Inch CSP Elbow .064 (2-2/3 × 1/2) .....................................................Each

15 18 Inch CSP Elbow .064 (2-2/3 × 1/2) .....................................................Each

36 30 Inch CSP Elbow .079 (2-2/3 × 1/2) .....................................................Each

46 36 Inch CSP Elbow .079 (2-2/3 × 1/2) .....................................................Each

601.5205 12 Inch CAAP Elbow .060 (2-2/3 × 1/2) ..................................................Each

10 15 Inch CAAP Elbow .060 (2-2/3 × 1/2) ..................................................Each

15 18 Inch CAAP Elbow .060 (2-2/3 × 1/2) ..................................................Each

25 24 Inch CAAP Elbow .060 (2-2/3 × 1/2) ..................................................Each

36 30 Inch CAAP Elbow .075 (2-2/3 × 1/2) ..................................................Each

52 42 Inch CAAP Elbow .105 (2-2/3 × 1/2) ..................................................Each

601.5405 12 Inch PCCSP Elbow .064 (2-2/3 × 1/2) ................................................Each

10 15 Inch PCCSP Elbow .064 (2-2/3 × 1/2) ................................................Each

15 18 Inch PCCSP Elbow .064 (2-2/3 × 1/2) ................................................Each

25 24 Inch PCCSP Elbow .064 (2-2/3 × 1/2) ................................................Each

36 30 Inch PCCSP Elbow .079 (2-2/3 × 1/2) ................................................Each

56 42 Inch PCCSP Elbow .109 (2-2/3 × 1/2) ................................................Each

601.5802 12 Inch CPEP Elbow ................................................................................Each

08 15 Inch CPEP Elbow ................................................................................Each

601

Pay Item Pay Unit

14 18 Inch CPEP Elbow ................................................................................Each

24 24 Inch CPEP Elbow ................................................................................Each

601.5902 12 Inch CPPP Elbow.................................................................................Each

08 15 Inch CPPP Elbow.................................................................................Each

14 18 Inch CPPP Elbow .................................................................................Each

24 24 Inch CPPP Elbow.................................................................................Each

601.6005 12 Inch CSPES .064 (2-2/3 × 1/2) ............................................................Each

10 15 Inch CSPES .064 (2-2/3 × 1/2) ............................................................Each

15 18 Inch CSPES .064 (2-2/3 × 1/2) ............................................................Each

25 24 Inch CSPES .064 (2-2/3 × 1/2) ............................................................Each

36 30 Inch CSPES .079 (2-2/3 × 1/2) ............................................................Each

46 36 Inch CSPES .079 (2-2/3 × 1/2) ............................................................Each

52 42 Inch CSPES .109 (2-2/3 × 1/2) ............................................................Each

57 48 Inch CSPES .109 (2-2/3 × 1/2) ............................................................Each

601.6210 15 Inch CAAPES .060 (2-2/3 × 1/2).........................................................Each

15 18 Inch CAAPES .060 (2-2/3 × 1/2).........................................................Each

25 24 Inch CAAPES .060 (2-2/3 × 1/2).........................................................Each

36 30 Inch CAAPES .075 (2-2/3 × 1/2).........................................................Each

46 36 Inch CAAPES .075 (2-2/3 × 1/2).........................................................Each

52 42 Inch CAAPES .105 (2-2/3 × 1/2).........................................................Each

57 48 Inch CAAPES .105 (2-2/3 × 1/2).........................................................Each

601.6810 15 Inch RCPES Class III...........................................................................Each

15 18 Inch RCPES Class III...........................................................................Each

25 24 Inch RCPES Class III...........................................................................Each

35 30 Inch RCPES Class III...........................................................................Each

45 36 Inch RCPES Class III...........................................................................Each

55 48 Inch RCPES Class III...........................................................................Each

601.7005 12 Inch CPEPES .......................................................................................Each

10 15 Inch CPEPES .......................................................................................Each

15 18 Inch CPEPES .......................................................................................Each

20 24 Inch CPEPES .......................................................................................Each

25 30 Inch CPEPES .......................................................................................Each

30 36 Inch CPEPES .......................................................................................Each

601.7105 12 Inch CPPPES .......................................................................................Each

10 15 Inch CPPPES .......................................................................................Each

15 18 Inch CPPPES .......................................................................................Each

20 24 Inch CPPPES .......................................................................................Each

25 30 Inch CPPPES .......................................................................................Each

30 36 Inch CPPPES .......................................................................................Each

601

Pay Item Pay Unit

601.8036 35 Inch × 24 Inch CSPAES .079 (2-2/3 × 1/2) .........................................Each

601.8236 35 Inch × 24 Inch CAAPAES .075 (2-2/3 × 1/2) .....................................Each

601.9900 Re-Laying Pipe Culverts ...........................................................................Linear Foot

15 Re-Laying Pipe Culverts, 15 Inch .............................................................Linear Foot

18 Re-Laying Pipe Culverts, 18 Inch .............................................................Linear Foot

24 Re-Laying Pipe Culverts, 24 Inch .............................................................Linear Foot

50 Cleaning Culvert Pipe, In-Place (0 to 24 Inches, Inclusive) .....................Linear Foot

60 Cleaning Culvert Pipe, In-Place (Greater than 24 Inches) ........................Linear Foot

602

6-12SECTIO N 602 – MASONRY

602.0 1 DESCRIPTION . This work shall consist of furnishing materials and constructing walls and other masonry of the types and sizes specified ; or rebuilding, repairing, or repointing existing masonry ; or coring into an existing concrete structure and mortaring pipe, ducts, or conduit (collectively termed pipe in this section) into the structure . 602.0 2 MATERIALS . Materials shall meet the requirements of the following subsections: Granular Backfill for Structures ................................ ................................ ................. 704.08 Stone for Masonry ................................ ................................ ................................ ......706.01 Stone for Masonry Facing ................................ ................................ .......................... 706.02 Mortar, Type II ................................ ................................ ................................ ........... 707.0 1(c) Mortar, Type IV ................................ ................................ ................................ ......... 707.0 1(e) Mortar, Type V ................................ ................................ ................................ .......... 707.01(f) Mortar, Type VI ................................ ................................ ................................ ......... 707.01(g) Bar Reinforcement ................................ ................................ ................................ .....713.01 Materials used for rebuilding or repairing stone masonry shall be approved by the Engineer prior to use . New s tone, as required, shall match as closely as practical the existing stone masonry color, texture, and size. If required to match the existing stone masonry, chemical treatment processes to aid in providing stone of similar color shall be investigated by th e Contractor. Mortar used in stone masonry and repointing stone masonry shall be Type II, Type V, or Type VI mortar as specified in the Contract. Concrete for headwalls shall meet the requirements of Section 541 for Concrete, Class B. Dowels shall be in accordance with the requirements of Subsection 713.01(a) , unless other wise specified on the Plans. 602.0 3 MIXIN G OF MORTAR . The fine aggregate and cement shall be mixed in a clean, tight container until a mixture of uniform color is produced, after which clean water shall be added in such quantity as to form a mortar with t he consistency of stiff paste . If desired, the Contractor will be permitted to use a batch mixer of an approved size and type . Mortar which has been mixed for more than 45 minutes shall not be used, and re -tempering of mortar will not be permitted. 602.0 4 PLACIN G OF STONE . The placing and shaping of stone shall be the same for dry or cement masonry , however, dry masonry shall be placed without the use of mortar.