Section 850
8-31 Section 850
CONCRETE PAVED DITCH
850-1 Description
Construct Portland cement concrete paved ditches as shown in the plan s for the various types of ditches. Work includes , but is not limited to , all excavating and backfilling, furnishing and placing concrete, constructing curtain walls and constructing and sealing joints.
850-2 Materials
Refer to Division 10. Item Section Curing Material s 1026 Joint Filler 1028 -1 Joint Sealers 1028 -2, 1028 -3 Portland Cement Concrete, Class B 1000
850-3 Construction Methods
Construct concrete in accordance with Section 825 and give a sidewalk finish, except as otherwise provided herein. Broom the concrete surface transverse to the longitudinal centerline of the paved ditch. Make joint spacing no less than 5 f eet. Do not place backfill adjacent to the paved ditch until at least 3 curing days have elapsed, unless otherwise approved by the Engineer . Compact backfill to a d egree comparable to the adjacent undisturbed material.
850-4 Measurement and Payment
__" Concrete Paved Ditch will be measured and paid in square yards that is completed and accepted. Longitudinal measurements will be made along the surface of the pavement at the centerline of the ditch and transverse measurements will be made along the surface of the pavement at right angles to the cent erline. No measurement will be made of curtain walls at the beginning or ends of the paved ditches. Payment will be made under: Pay Item Pay Unit __" Concrete Paved Ditch Square Yard
852-1 Description
Construct traffic islands and medians of the type required by the plans. Perform the work in accordance with the contract.
852-2 Materials
Refer to Division 10. Item Section Curing Material s 1026 Herbicide 1060 -13 Joint Filler 1028 -1 Joint Sealers 1028 -2, 1028 -3 Portland Cement Concrete, Class B 1000
8-32 852-3 Construction Methods
Construct curb and gutter and curb , in accordance with Section 846. Uniformly grade and compact the earth or base course under any island or median t o the same requirements as the surrounding material. Where necessary, t reat aggregate and subgrade beneath other types of bases or directly beneath any concrete with a herbicide in accordance with Article 1670 -7. Construct concrete in accordance with Secti on 825 and give a sidewalk finish, except as otherwise provided herein. Broom concrete surfaces in medians transverse to the direction of traffic unless otherwise directed. Locate joints in island and median covers to line up with the joints in the curb and curb and gutter wherever possible. Locate joints in monolithic concrete islands and medians constructed adjacent to concrete pavement to line up with the joints in the concrete pavement wherever possible. Seal all joints. Form openings in the island or island cover to accommodate sign posts.
852-4 Measurement and Payment
__" Concrete Island Cover will be measured and paid in square yards of concrete island cover that has been placed and accepted. Measurement will be made along the top surface of the completed island cover. This work includes , but is not limited to , excavation and backfilling, constructing base, furnishing and placing concrete, forming holes for signposts and constructing and sealing joints. __" Monolithic Concrete Islands ( ) will be measured and paid in square yards of concrete island that has been placed and accepted. Measurement will be made parall el to the bottom surface of the island or median. This work includes , but is not limited to , excavation and backfilling, constructing base, furnishing and placing concrete, forming holes for signposts and constructing and sealing joints. __" Monolithic Concrete Median ( ) will be measured and paid in square yards of concrete median that has been placed and accepted. Measurement will be made parallel to the bottom surface of the island or median. This work includes , but is not limited to , excavation and backfilling, constructing base, furnishing and placing concrete, forming holes for signposts and constructing and sealing joints. Concrete Transitional Section for Catch Basin will be measured and paid in units of each. Concrete Transitional Section for D rop Inlet will be measured and paid in units of each. Payment for constructing earth fill will be made in accordance with Article 225 -7 for Unclassified Excavation or Article 230 -5 for Borrow Excavation, depending on the source of the material. Payment for establishing a grass cover in unpaved island areas will be in accordance with
Article 1660 — 8.
Payment for constructing Concrete Curb and Concrete Curb and Gutter will be made in accordance with Article 846 -4. Payment will be made under: Pay Item Pay Unit __" Concrete Island Cover Square Yard __" Monolithic Concrete Islands ( ) Square Yard __" Monolithic Concrete Median ( ) Square Yard Concrete Transitional Section for Catch Basin Each Concrete Transitional Section for Drop Inlet Each