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inch deep holes in the adjoining existing pavement. Splices in the reinforced steel required <br /> to be made shall have an overlap of at least twelve (12) inches. <br /> 5. Utility trenches patched with P.C.C. shall be kept free of traffic or other detrimental trespass <br /> through use of suitable barriers and other tr2ffic control devices for a minimum period of <br /> seven (7) days. An alternative using 9.0 sacl:_ of portland cement per cubic yard of concrete <br /> allows the traffic to be returned after a minirlum period of (3) days. <br /> 6. Pavement cuts encountering P.C.C. overlaic by asphalt concrete may be replaced by full <br /> depth asphalt concrete. <br /> 7. Internal vibration shall be used to consolidate P.C.C. which is being placed in depths greater <br /> than seven (7) inches. <br /> 3.B.2 Asphalt Cement Concrete Streets <br /> In addition to general requirements 1 through 20 gig:n in section 3.B above, work within Asphalt <br /> Cement Concrete (A.C.) streets and alleys shall con~ornl to the following requirements: <br /> 1. A.C. in utility trench patches shall be placed to a depth matching the existing pavement or <br /> four (4} inches, which ever is greater. The t~~p course shall be class "C" mix and shall not <br /> be placed any thicker than 2 inches or thinner than 1 inch. Where the existing pavement is <br /> A.C. over P.C.C., C.T.B. or A.T.B., replacement depth shall be the combined depth of the <br /> A.C. and P.C.C., C.T.B. or A.T.B. <br /> The permittee may substitute P.C.C. for A.C. for all except the top (4) four inches when <br /> replacing existing pavement sections. If the permittee uses a 9 sack concrete mix design and <br /> places the concrete at an approximate slump o ?inches, final asphalt concrete may be placed <br /> after allowing the concrete two hours to cure. <br /> 2. Tack coat asphalt conforming to section =11 of the Standard Specifications shall be <br /> uniformly applied to the existing abutting A.C., P.C.C., A.T.B., or C.T.B surfaces. <br /> 3. The materials and the placement and compaction of A.C. shall conform to the requirements <br /> of section 211 of the Standard Specifications. <br /> Compaction of the surface lift of A.C. shall ~e accomplished using a steel wheel roller of <br /> adequate size to insure aggregate interlocking and thorough compaction to the above- <br /> referenced specifications. A vibrator plate compactor shall not be acceptable for finish lift <br /> compaction. <br /> 4. After final compaction, all joints between nee; and existing paving shall be sealed with CSS- <br /> 1 paving asphalt, and sanded to prevent pickup and tracking. The asphalt shall be applied <br /> <br /> Utility & R/W Permit Policy <br /> Exhibit A - 2$ r:\adminord\rules\OOrowrlexa.wpd(09/13/00) <br /> <br />