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The work covered by this section consists of the construction of portland cement concrete sidewalks, driveways, and wheelchair ramps in accordance with the requirements shown on the plans and the provisions of these specifications.
All materials shall meet the requirements of Division 10 shown below:
Portland cement concrete Section 1000
Curing agents Section 1026
Joint fillers Article 1028-1
Joint sealers Article 1028-2
848-3 CONSTRUCTION REQUIREMENTS.
Where it is necessary to remove a portion of existing sidewalks or driveways, the Contractor will be required to furnish a neat edge along the pavement to be retained by sawing a neat line approximately 2 inches deep with a concrete saw before breaking the adjacent pavement away.
Concrete shall be constructed in accordance with Section 825 and shall be given a sidewalk finish, except as otherwise provided herein. Class B concrete shall be used.
Brooming of the concrete surface shall be done transverse to the direction of traffic. Joint spacing shall not be less than 5 feet. Where existing sidewalks are being widened, transverse joint shall be located so as to line up with existing joints in the adjacent sidewalk. Grooved joints shall not be sealed.
No backfill shall be placed adjacent to the sidewalk, driveway or wheelchair ramp until at least 3 curing days as defined in Article 8259 have elapsed. However, backfill shall be placed no later than 4 calendar days after the completion of this 3 curing day time period. Backfill shall be compacted to a degree comparable to the adjacent undisturbed material.
Vehicles may be permitted on the completed work after 7 curing days, as defined in Article 8259, have elapsed. When high early strength concrete is used, vehicles will be permitted on the completed work after 3 curing days have elapsed.
The quantities of sidewalk, driveways, and wheelchair ramps to be paid for will be the actual number of square yards of sidewalks, driveways, and wheelchair ramps, measured along the surface of the completed work, which have been completed and accepted. In measuring these quantities, the length and width will be as called for on the plans or established by the Engineer.
The quantity of sidewalk, measured as provided in Article 8484, will be paid for at the contract unit price per square yard for "________Inch Concrete Sidewalk." The quantity of driveways, measured as provided in Article 8484, will be paid for at the contract unit price per square yard for "_________Inch Concrete Driveways." The quantity of wheelchair ramps, measured as provided in Article 8484, will be paid for at the contract unit price per square yard for "Concrete Wheelchair Ramps." Such prices and payments will be full compensation for all work covered by this section including but not limited to excavation and backfilling; sawing the existing sidewalk or driveway; furnishing and placing concrete; and construction joints.
Payment will be made under:
________Inch Concrete Sidewalk Square Yard
________Inch Concrete Driveways Square Yard
Concrete Wheelchair Ramps Square Yard