(B) The work must not unreasonably interfere with vehicular and pedestrian traffic, the demand and necessity for parking space, and the means of egress to and from the property affected and adjacent properties.
(C) The public health, welfare and safety of the public will not be unreasonably impaired.
(D) Any and all installation and repairs of concrete and asphalt repair and patching must be in accordance with the following specifications:
(1) General. All materials and methods of construction shall conform to Kentucky Transportation Cabinet, Department of Highways Specifications: Current Edition with subsequent revisions.
(2) Concrete construction. Concrete shall be 3500 PSI (28 day), Hurstbourne “Historic Mix #899,” call Allied Readymix for information) “ready mixed” conforming to ASTM Specifications C-94. Air entraining admixture for concrete shall conform to ASTM Specifications C-260-77. Reinforcing steel shall be deformed steel bars conforming to ASTM Specification A615, Grade 60. Welded wire fabric shall conform to ASTM Specification A185.
(a) Expansion joint filler shall be ½" remolded asphaltic impregnated material conforming to ASTM D1751, latest revision, unless otherwise noted on the plans.
(b) All concrete to be used in construction of headwalls, wingwalls, culverts, catch basins or for any other structural purposes shown on the plans shall be Class "A", 3,500 pounds per square inch and delivered only in quantities for immediate use. Concrete which has set prior to placement shall be discarded.
(c) Forms shall be constructed in accordance with ACI 347. Form ties shall be removed to a point ½" inside the wall and the resulting holes filled with a rich cement grout.
(d) Bending, placing, fastening and supporting of reinforcement shall be in accordance with ACI (318-95).
(e) Mechanical, insertion type, internal vibrators shall be used to compact the concrete.
(f) Concrete work shall be protected against frost and rapid drying and kept moist at least three days after placing. Concrete may not be placed when the temperature is below 35º F., unless sufficient framework and canvas or other housing is maintained at 50º F. by the contractor.
(3) Concrete curb. All curbs or curb and gutters are to be constructed of Class "A" Concrete, 3500 pounds per square inch test, and are to be uniform in height, width and alignment, true to grade and satisfactory in finish and appearance. All materials and methods of construction, including curing, to be in accordance with Section 506 of the Kentucky Department of Highways Standard Specifications for Road and Bridge Construction, latest edition.
(a) All concrete curbs shall have expansion joints constructed at intervals of not less than six feet nor more than 30 feet, and ½" pre-molded expansion joint material, cut to conform to the curb or to the curb and gutter section, shall be used in each expansion joint.
(b) When curbs and gutters and/or island curbs are removed and replaced the area behind curbs shall be tamped and brought up to grade. This area shall be filled with suitable earthen materials, seeded and strawed, if necessary. All disturbed areas shall be seeded and strawed. All curbs shall be replaced in kind with the color of concrete that gives the appearance of being as aged as the existing curb.
(c) Caution shall be exercised when removing a median curb so as not to damage any sprinkler piping or watering heads. If any of the sprinkler system is damaged it will be repaired by the contractor at no additional cost.
(4) Dense graded aggregate base. The base shall be of the course or courses identified as existing in the pavement section excavated and, as specified, dense graded aggregate with water, placed and compacted according to Section 303 of Kentucky Transportation Department Specifications and conforming to line and grade.
(a) The aggregate shall be crushed limestone as required by Section 805.04.03 of Kentucky Department of Transportation Specifications, graded so as to produce a final mixture in place, meeting the following:
1 inch square sieve 100
3/4 inch square sieve 70-100
3/8 inch square sieve 50-80
No. 4 square sieve 35-65
No. 30 square sieve 10-40
No. 200 square sieve 2-10
(b) The water shall be from approved supply, added to the extent that a thin slurry forms on top of the base when compacted. The compacted depth of each layer shall be no less than four inches (4").
(c) All work done under this item shall conform to Section 303 of the Kentucky Department of Transportation Specifications.
(5) Backfilling trench. Trenches shall be backfilled in six-inch layers and each layer thoroughly tamped to pavement sub-grade for pipe laid under the proposed paving. Pipe laid outside the limits of the paving or curb and gutter shall be tamped in six-inch layers to the top of the pipe where no paving or entrance drives are encountered. Where entrance drives or cross streets are encountered, tamping shall be as described in six-inch layers to the pavement sub-grade. Where tamping is only required to the top of the pipe, the remainder of the ditch shall be backfilled with loose earth and earth heaped above the top of the ground over the trench and allowed to settle until towards completion of the project, after which excess earth shall be removed from the top of the trench to the level of the ground and disposed of by the contractor.
(6) Excavation and replacement of damaged pavement. Upon excavation of asphalt roadways for utility work, the existing sub-grade and sub-base is to be thoroughly compacted by use of a mechanical tamp and/or vibratory roller. When compaction is complete, repave the areas using the Kentucky Department of Highways Specification Material; asphaltic concrete base. After tack coat has been installed and allowed to reach the tacky stage as provided above, a course or courses of the total thickness to match the existing pavement section of Class I Type "A" Bituminous Concrete or equivalent shall be constructed in accordance with all provisions of the Kentucky Department of Transportation Specifications 402. This base material shall be placed and thoroughly compacted in not more than four (4") inch thick layers, to match the existing pavement section excavated and matching the elevation of the existing pavement surface course. The finished project shall be a neat and smooth riding surface.
(a) SS-1h tack coat shall be applied to asphalt binder at a rate of 0.10 gallons per square yard. Tack coat shall in all respects meet the Kentucky Department of Transportation, Specifications 407.
(b) All joints shall be sealed with Crack Master Supreme #M105OL. No drainage pockets or ruts will be permitted.
(c) When patching a specific pavement area (instead of providing a full asphalt overlay), joints for the base asphalt, as well as the surface course asphalt shall be sealed, with no pockets or ruts permitted as noted above.
(d) Alternatively, for utility repairs, restoration can be performed by installation of 6" to 8" Class "A" concrete cap over the utility trench in place of the existing base material. The concrete cap shall be installed a minimum of 12" beyond either side of the utility trench. The asphalt pavement saw cut shall be a minimum of 12" either side of this concrete cap and shall be installed with standard edge key. (Refer to typical utility trench restoration detail attached to Ordinance 11-02.)
(Ord. 11-02, passed 2-22-11; Am. Ord. 13-02, passed 3-12-13; Am. Ord. 16-08, passed 10-11-16)