Section 2201.� Portland Cement Concrete Base
Construct PCC base course to the dimensions shown in the contract documents.
Apply Article 2301.
Apply Section 2301 with the following exceptions:
A.��� Use Class A or Class C concrete, or the mixture used in the mainline paving.
B.��� The tolerance, when checked with a surface checker, shall be 0.25 inch in 10 feet (5 mm in 3 m).
C.��� If an asphalt surface is a part of the contract, a dark colored curing compound may be used.
D.��� The base may be opened to shouldering operations, traffic, or surfacing after it has attained an age of 72 hours and a flexural strength of 500 psi (3.5 MPa).
E.��� Saw and seal joints according to Section 2122 when constructing PCC paved shoulder. Joints need not be sealed for a PCC base course.
2201.04���� Method of Measurement.
Measurement for P.C. Concrete Base will be according to Article 2301.04, A.
Payment for P.C. Concrete Base will be according to Article 2301.05, A.