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 must
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 the
start of a 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. 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 to be disposed of by the Contractor.
Monitor and control dust,
pavement contamination, and the scattering of loose particles to acceptable
levels during planing and cleaning operations.
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 planning, mark areas of
spalled or dislodged unsound pavement.
Before patching, the areas shall be cleaned 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 inch (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.
8. Document on CA-D-1A
or 1B or other approved form.