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3.6.1 Portland Cement Concrete Streets Alleys and Driveways <br /> In addition to general requirements 1 through 20 given above, work within Portland Cement <br /> Concrete (P.C.C.) streets and alleys shall conform to the following requirements: <br /> 1. Minimum width of pavement cuts in P.C.C. streets and alleys shall be three (3) feet. <br /> Unless otherwise approved, replacement of the full panels affected shall be required <br /> on sidewalks and driveways. <br /> 2. P.C.C. in utility trench patches shall be placed to a depth matching the existing <br /> pavement or seven (7) inches, whichever is greater. Where the existing pavement <br /> is P.C.C. over Cement Treated Base (C.T.B.) or Asphalt Treated Base (A.T.B.), <br /> replacement depth shall be the combined depth of the P.C.C. and C.T.B. or A.T.B. <br /> 3. Where the replacement P.C.C. on the outside edge of an alley abuts A.C. a <br /> minimum of 24 inches of A.C. shall be removed to allow sufficient room for the <br /> placement of the alley concrete forms and proper compaction of asphalt restoration. <br /> Where the alley outside edge abutting material is P.C.C., a full length expansion <br /> joint shall be placed. <br /> 4. Steel reinforcement which is required to be used in all P.C.C. street, alley and <br /> driveway utility trench patches shall be No. 4 bar twenty-four (24) inches on center <br /> in both the longitudinal and traverse directions. A minimum of two parallel bars in <br /> each direction shall be used. Except at existing expansion joints, the new patch <br /> shall be tied into the existing pavement by fully inserting the reinforced steel into <br /> drilled half inch diameter by three (3) inch deep holes in the adjoining existing <br /> pavement. Splices in the reinforced steel required to be made shall have an overlap <br /> of at least twelve (12) inches. <br /> 5. Utility trenches patched with P.C.C. shall be kept free of traffic or other detrimental <br /> trespass through use of suitable barriers and other traffic control devices for a <br /> minimum period of seven (7) days. An alternative using 9.0 sacks of Portland <br /> cement per cubic yard of concrete allows the traffic to be returned after a minimum <br /> period of (3) days. <br /> 6. Pavement cuts encountering P.C.C. overlaid by asphalt concrete may be replaced <br /> by full depth asphalt concrete. <br /> 7. Internal vibration shall be used to consolidate P.C.C. which is being placed in <br /> depths greater than seven (7) inches. <br /> 3.B.2 Asphalt Cement Concrete Streets <br /> In addition to general requirements 1 through 20 given in section 3.B above, work within <br /> <br /> Asphalt Cement Concrete (A.C.) streets and alleys shall conform to the following <br /> requirements: <br /> Utility & R/W Permit Policy 20 02/09/98 <br /> <br />