SECTION SP 42 – CONCRETE SIDEWALK
Make the following amendments to said Section:
(I) Amend Section 42.4 MEASUREMENT AND PAYMENT to read as follows:
"SP 42.4 RECONSTRUCTION OF CONCRETE SIDEWALKS
Unless otherwise specified herein, all work shall conform to Subsections 42.2 and 42.3 (CONCRETE SIDEWALK) of the Standard Specifications and R-27 and R-28 of the Standard Details.
A. DESCRIPTION
This work consists of the reconstruction of the concrete sidewalk areas as shown on the project plans and in accordance with this special provision.
B. CONSTRUCTION DETAILS
1) General. The approximate locations of the areas to be reconstructed are noted in the project plans. The exact limits will be determined in the field by the Officer in Charge.
2) Removal of existing sidewalks. In removing the existing sidewalks to be reconstructed, the junctions with the concrete sidewalks to remain shall be power saw cut along straight lines, preferably along the scored lines, to provide clean, solid, vertical joints. Existing concrete sidewalks shall be permitted to be removed only on one side of any street at any given time, except as allowed by the Officer in Charge. The Contractor will not be allowed to remove in advance more existing concrete sidewalks than he can replace within five working days.
3) Subgrade. Subsection 41.3A of the Standard Specifications shall govern except as modified herein. Any fill necessary to bring the sidewalk to the proper grade shall be select borrow. After the existing concrete sidewalks is removed, the subgrade shall be kept in a continuously moist condition. Subgrades with expansive soil that has cracked due to its drying out shall be removed to a depth of 12 inches (maximum) or shall be removed to match existing pavement subgrade, whichever is less, and replaced with select borrow at no additional cost to the City.
4) Placing and finishing. Prior to pouring of concrete, the subgrade shall be dampened. Concrete shall be poured continuously and shall be thoroughly tamped and floated to a smooth and even surface. The pouring and constructing of alternating blocks shall not be permitted.
5) Joints. Expansion joints shall be constructed at fixed structures, such as buildings bridges, or walls, and at the beginning and end of curb returns. The joints shall be constructed with ½” thick premolded expansion-type filler, extending from the bottom of the sidewalk to approximately ½” below the top of the sidewalk, then filled with joint sealer. Expansion joints, where their construction are determined to be required in the field by the Officer-in-Charge, shall be considered as included and no measurement for payment will be made.
SP 42.5 MEASUREMENT AND PAYMENT
Concrete sidewalk shall be measured for payment by the square foot. Payment shall be made at the unit price bid and shall be full compensation for furnishing the material, tools and labor necessary to complete the work, including the preparation of the subgrade.
The Officer-in-Charge will measure the reconstructed concrete sidewalk per square foot in accordance with the contract documents and as shown on the project plans. The Officer-in-Charge will pay for the accepted concrete sidewalk at the contract price per square foot. Payment will be full compensation for furnishing the necessary material, equipment, and labor to complete the work in place prescribed in this section and the contract documents.
Removal of the existing sidewalks will not be paid for directly but shall be considered as included in the prices bid for sidewalk reconstruction.
When ordered by the Officer in Charge, additional concrete sidewalk work outside of the designated pay limits, as shown on the project plans, will be measured and paid at the appropriate Additional Work Unit Price for Concrete Sidewalk Reconstruction, complete in place. The price includes full compensation for removing and disposing the existing improvements; excavating; backfilling; recompacting the existing subbase material; and furnishing labor, materials, equipment, tools, and incidentals necessary to complete the work."
END OF SECTION SP 42
Special Provisions 42-1 7/16/15