270 sealing joints, patch area protection, and for all other materials, labor, tools, equipment, and incidentals neces sary to complete the item.
506.10PAY ITEMS :
ITEM DESCRIPTION UNIT 506001 -003 Concrete Pavement Repair, Type I, “thickness” Square Yard 506001 -004 Concrete Pavement Repair, Type II Square Yard 506001 -005 Concrete Pavement Repair, Type III Each 506003 -* Additional Concrete for Type I Repair Cubic Yard
* Sequence number “thickness” shall be in inches
271 SECTION 507 LARGE CRACK AND POTHOLE REPAIR OF CONCRETE PAVEMENT
507.1 -DESCRIPTION : This work shall consist of repairing large cracks and pothole repair of an existing concrete pavement surface. The locations of these repairs shall be as shown on plans or as specified by the Engineer.
507.2 -MATERIALS : The materials shall conform to the requirements of the following sections.
MATERIAL SECTION Fine Aggregate 702.3 Asphalt Base Course 401 Performance Graded Binder 705.5 Tack Coat 408
507.3 -CONSTRUCTION METHODS : Cracks one ( 1) inch or less wide shall be repaired, as outlined in Section 503. Existing concrete pavement cracks in excess of one ( 1) inch, but less than three ( 3) inches in width, shall be thoroughly cleaned of all dirt, debris, loose or other foreign or unstable mat erial and filled with a mixture of sand and asphalt. The asphalt content shall be 5 to 10%. Asphalt mixture shall be applied at a temperature range of 250 to 325F. All cracks in excess of three ( 3) inches and all potholes greater than one ( 1) inch in depth, shall be thoroughly cleaned of all dirt, debris, loose or other foreign or unstable material. After cleaning, the cracks and potholes are to be tacked, in accordance with Section 408 of the Specifications, and filled with asphalt base course material in accordance with Section 401 or as approved by the Engineer. All cracks and potholes are to have the same finished grade as the adjacent surfaces.
507.4 -METHOD OF MEASUREMENT : The quantity of work done for large crack and pothole repair will be measured by the actual number of tons of material used for crack and pothole repair and shall include cleaning, tack material, asphalt, sand, asphalt concrete bas e course complete in place and accepted.
507.5 -BASIS OF PAYMENT : The quantities, determined as provided above, will be paid for at the contract unit price bid for the item listed below, which price and payment shall be full compensation for furnishing all the materials, and doing all the work prescribed in a workmanlike and acceptable manner, including all labor, tools, equipment, supplies, and incidentals necessary to comp lete the work.
507.6 -PAY ITEM : ITEM DESCRIPTION UNIT 507002 -* Large Crack and Pothole Repair of Concrete Pavement Ton
* Sequence number
272 SECTION 508 DIAMOND GRINDING
508.1-DESCRIPTION : This work consists of diamond grinding portland cement concrete pavement and roadway surfaces of structures to provide good riding characteristics, a surface texture and proper drainage.
508.2 -EQUIPMENT : Grinding shall be done utilizing diamond blades mounted on a self -propelled machine designed for grinding and texturing pavement. The equipment shall have a minimum weight, including the grinding head, of 35,000 lbs . and of a size that will grind a strip at least three ( 3) feet wide. Grinding equipment that causes raveling, aggregate fractures, spalls, or disturbance to the transverse or longitudinal joints shall not be permitted. The equipment shall have a positive means of vacuuming the grinding residue from the pavement surface and will leave the pavement in a clean condition.
508.3 -CONSTRUCTION : The construction operation shall be scheduled and proceed in a manner that produces a neat, uniform, finished surface. Auxiliary or ramp lane grinding shall transition from the edge of the mainline as required to provide drainage and an acceptable riding surface. Pavement repair, if required, shall be completed prior to any grinding. Joint resealing shall be completed subsequent to all diamond grinding operations. Grinding shall be accomplished in a manner that eliminates joint or crack faults and provides lateral drainage by maintaining a constant cross slope between grinding extremities in each lane. The cross slope of the pavement shall be as shown on the plans and shall have no depressions or misalignment of slope greater than 1/4 inch in twelve ( 12) feet when measured with a twelve ( 12)foot straightedge placed perpendicular to the centerline. Areas of deviation shall be reground. Straightedge requirements will not apply across longitudinal joints or outside the ground area. Areas that display a ridge in excess of 1/4 inch at the pavement shoulder interface shall be diamond ground a minimum width of two ( 2) feet on to the shoulder and paid for at the Contra ctor’s bid price. Grinding shall begin and end at lines normal to the pavement centerline at the project limits. No unground surface area between passes will be permitted.
508.4 -FINAL SURFACE FINISH : The grinding process shall produce a pavement surface which is true to grade and uniform in appearance with a longitudinal line -type texture. The line -type texture shall contain corrugations, parallel to the outside pavement edge, which present a narrow rid ge corduroy type appearance. The peaks of the ridges shall be 1/8 inch + 1/16 inch higher than the bottoms of the groove with evenly spaced ridges having a width that measures within the ranges listed in the table below: