(A) At the time of placement of the concrete, the subgrade shall be properly dampened just prior to the placement where it has become dry, where the surface has been removed by final grading or for any other reason it has not been removed by final grading or for any other reason it has not been properly dampened. Plain cement pavement shall be in accordance with Section 501 of the “Standard Specifications” or any subsequent amendments thereto.
(B) Materials shall comply with requirements of the “Standard Specifications.” Minimum cement content shall be 6.0 bags per cubic yards of concrete mixture. No cement reduction below the minimum shall be allowed for admixtures to increase workability or control setting time. Concrete pavement is to be six inches in thickness. Concrete is to be mixed with air entrained cement of at least 6% air. Center of street bulkheads is to be keywayed by 2-inch x 4-inch keyway in center of form. Construction joints are to be doweled by one inch bars 14” long every two feet. (At all bulkheads where pour ends and starts again. Concrete shall be finished by machine or vibratory screed except on widened portions, intersections or other places where hand-finishing will be permitted.)
(C) Weakened plane or dummy, transverse, contraction joints shall be placed not to exceed 20-foot spacing. Closer spacing to average 15 feet will be encouraged. Transverse contraction joints may either be formed or sawed dummy groove, ribbon or pro-molded strip type and shall be one-fourth the pavement depth.
(D) When transverse joints are to be formed by sawing, care must be taken to saw the grooves soon after placing the concrete to prevent the formation of cracks due to contraction of the slab. All transverse joints shall be sawed within eight hours after the placing of the concrete unless authorization is given for sawing at a later time. One of the above-named joints shall be placed at every catch basin and manhole in line of pavement. The location of manholes and the like in the pavement shall determine the exact location of the joints. All joints shall extend throughout curbs to full width of pavement.
(E) Transverse expansion joints shall be placed at Tee intersections and wherever else shown on the plans.
(F) Whenever the width between forms of the pavement under construction is greater than 13½ feet, longitudinal joints shall be constructed so as to divide the pavement into strips not to exceed 13½ feeteach. This may be accomplished by sawing or constructing a slot or groove as herein described for dummy construction joints or by a deformed key plate installed prior to the depositing of the concrete.
(G) Curing with white membrane curing compound AASHO Number type 2 - M - 14B will be properly applied to give complete coverage.
(`87 Code, § 7-28) (Ord. 1978-8A, passed 8-8-78; Ord. 1979-4A, passed 4-10-79)