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The work covered by this section consists of adjusting, abandoning, or removing utility facilities. The contractor shall provide all materials, labor, equipment and incidentals necessary to complete the proposed utility work unless indicated otherwise in the proposal.
All material shall meet the requirements of Division 10 and shown below.
Portland Cement Concrete Section 1000
Precast Concrete Units Section 1077
Masonry Section 1040
Select Materials Section 1016
The cement grout shall have a minimum compressive strength of 500 psi. Such grout shall consist of portland cement, sand and water. The grout shall be of a consistency to flow and be vibrated, if necessary, in order for the mix to flow uniformly into the pipe to be filled.
1530-3 CONSTRUCTION REQUIREMENTS.
(A) Pipe:
Abandoned pipe, designated on the plans or by the Engineer, shall be filled with portland cement and sand grout or removed, at the discretion of the Contractor.
Any abandoned pipe to be removed, shall be excavated, removed and disposed of properly. The resulting trench shall then by backfilled and properly compacted using local excavated material or select backfill as required by the Engineer.
All abandoned utility pipe located in the roadway, which is twelve inches in diameter and larger and has a cover of less than twenty feet below finished pavement grade shall be filled with a portland cement and sand grout or removed to the satisfaction of the Engineer.
Any existing utility pipe exposed by grading operations shall be removed to a depth of twelve inches below subgrade elevation of the proposed roadbed or completed grading template and plugged with portland cement grout as directed by the Engineer.
All abandoned utility pipes shall be plugged with portland cement grout at the entrance to all manholes whether the manhole is to be abandoned or not.
(B) Manholes:
All utility manholes in the construction area that will be abandoned shall have all connecting utility pipe plugged, the top of manhole removed to an elevation of 2 feet below subgrade or below the spring line, and the manhole barrel filled with select earth material properly tamped. Any manhole that will have the connecting pipe filled with cement grout shall also be filled with cement grout to the top of main pipe. Connecting utility pipe(s) that do not require filling with cement grout shall be plugged in a manner acceptable to the Engineer before the manhole is filled in with earth material.
Manholes that are required to be removed shall have the frame and cover, manhole taper, wall, and base removed. All work shall meet the approval of the Engineer. The frame and cover shall become the property of the Contractor and shall be disposed of by him.
Manholes that will require rebuilding shall have the frame and cover removed, the manhole taper removed, and necessary manhole wall removed. Reconstruction shall include rebuilding manhole wall, manhole taper, and replacing frame and cover. All work shall meet the approval of the Engineer.
Manhole construction shall also conform to the applicable requirements of Article 15253.
All adjusted utility manhole covers shall be adjusted to an elevation slightly higher than the surrounding terrain so that surface water will not enter the manhole after the adjustment. Manholes located in paved areas shall be flush with the surrounding pavement.
The quantity of pipe, filled with cement grout or removed as required and accepted, shall be measured at the contract unit price per linear foot for the size of pipe filled or removed.
The quantity of abandoned utility manholes broken down, filled in and accepted, shall be measured at the contract unit price each.
The quantity of manholes rebuilt by removing and replacing manhole frame and cover, removing and rebuilding manhole taper and removing and rebuilding manhole wall will be based on a unit price for each manhole.
The quantity of manholes removed and accepted will be measured at the contract price each.
(A) Pipe:
Utility pipe measured as provided above and accepted will be paid for at the contract unit price per linear foot, for the size of pipe filled or removed.
(B) Manholes:
Utility manholes measured as provided above will be paid for at the contract unit price each.
Such prices and payments shall be full compensation for all material, labor, equipment, pumping or placing grout, removal and disposal of pipe, plugging pipe openings, breaking down manhole, rebuilding new manhole pargeting, steps, excavation, backfill, and incidentals necessary to complete the work as required.
Payment will be made under:
Fill or remove abandoned______inch pipe Linear Foot
Break down, plug, and fill abandoned utility manhole Each
Break down and rebuild existing manhole Each
Remove existing manhole Each