This work consists of planing the existing pavement and disposing of the cuttings, and if specified in the Contract, patching the planed surface. The pay description indicates the predominant type of pavement.
The equipment used must be self-propelled and have sufficient power and stability to consistently and efficiently meet the requirements of 254.05 and the plans. Equipment can have grinding, sawing, or milling type cutters. The cutters have to be mounted rigidly to the carrier and must be adjustable to control the depth of cut and cross-slope. Longitudinal planing action shall be accomplished by using equipment with a suitable carrier wheelbase or with an automatic control system having an external reference. Ensure that cross-slope adjustments or automatic controls are capable of producing a variable and a constant cross-slope, as required.
For small or confined areas, the Contractor may use suitable supplemental equipment or methods approved by the Engineer.
The engineer should mark the locations of signal loop detectors and notify the maintaining agency before starting the planing operation.
The Contractor may make one or more planing passes, as necessary, over the designated area to obtain the depth specified in the plans. Where establishing new pavement surface elevation or cross-slope remove irregularities such as bumps, corrugations, and wheel ruts as required.. Ensure that all cuttings are removed from the surface following each pass.
Before opening the completed area to traffic, the surface shall be thoroughly cleaned of all loose material that would create a hazard or nuisance, or would redeposit into the surface texture.
Cuttings shall be disposed of in accordance with 202.02. The Inspector shall determine and document where and how cuttings are being disposed by the Contractor.
Monitor and control dust, pavement contamination, and the scattering of loose particles during planing and cleaning operations to acceptable levels.
If damage occurs to the adjacent pavement by planing operations, repair the damaged area by matching the adjacent pavement with the planed area in terms of smoothness and mix type.
After planing mark areas of spalled or dislodged unsound pavement. Before patching, the areas shall be clean of loose materials and coated with 407.02 asphalt material. The area shall be patched with Item 448, Type 1 asphalt. Patched areas shall be compacted to be flush and level with adjacent pavement.
The surface shall be planed free from grooves, ridges, gouges, or other irregularities detrimental to the safe operation of vehicles on the planed surface.
If the Contract specifies planing without resurfacing, the surface shall be planed to a smoothness of 1/8 inch in 10 feet (3 mm in 3 m). If the Contract specifies resurfacing after planing, the surface shall be planed to a smoothness of 1/4 inch in 10 feet (6 mm in 3 m). The surfaces shall be matched at the edges of adjacent passes within 1/8 inch (3 mm). Ensure that the cross-slope of the planed surface is within 3/8 inch in 10 feet (10 mm in 3 m) of the specified cross-slope.
Measure the quantity of planing and patching and convert to square yards for payment.
Payment will not be made for repairs due to damage caused by the planing operation.
If the depth of the planed surface is increased by more than 3/8 inches (9.5 mm), the Department will recalculate the surface area for payment by multiplying the surface area measurement by a factor that equals the new depth divided by the plan depth. Additional depth will only be paid for with prior approval.
1. Document the location and/or stations of work.
2. Note locations of all loop detectors for traffic signals and notify the proper authority before removing.
3. Document the type of equipment used.
4. Record the depth of cut and cross slope grade.
5. Document the final disposition of cuttings.
6. Document method of removal (air hammer, bobcat, hand tools, etc.) around manholes, water-stops, catch basins, curb drains, etc.
7. Measure and pay as per 254.06.