ITEM 410 TRAFFIC COMPACTED SURFACE
410.01
Description
410.02
Materials
410.03
Conditioning of the Subgrade
410.04
Spreading and Shaping
410.05
Maintaining
410.06 Method
of Measurement
410.07 Basis of
Payment
410.01 Description. This work consists of
furnishing and placing an aggregate wearing course on the completed and
accepted subgrade or temporary road.
410.02 Materials. Furnish materials conforming to 703.18 for the type of material specified
(Type A, Type B, or Type C).
410.03 Conditioning of the Subgrade. Eliminate
wavy and irregular surfaces and maintain the subgrade in this condition until
the application of material under this item. If the subgrade is soft due
to rain, frost, or snow, place material only as permitted.
410.04 Spreading and Shaping. Uniformly
spread the material using an approved spreader box or by other methods.
Spread the amount of material shown on the plans or as directed by the
Engineer. After spreading, blade and shape the materials to the specified
cross-sections. Haul the material to its place on the road over the
previously spread material. Conduct the hauling to obtain uniform
compaction over the entire width of the surface material without rolling.
410.05 Maintaining. After
shaping the material, blade it as directed by the Engineer. Open
the road to traffic immediately after all the material has been spread and
shaped.
Correct all
holes, ruts, defects, or soft places that occur in the subgrade or surface by adding
material and dragging. Maintain the surface, slopes, shoulders, ditches,
and drainage structures until the work on this item has been completed and
accepted.
410.06 Method of Measurement. The
Department will measure Traffic Compacted Surface, Type ___ by the number of
cubic yards (cubic meters) or tons (metric tons) of accepted material placed,
shaped, and maintained as specified.
The
Department will measure the cubic yards (cubic meters) of aggregate used loose
in the vehicle at the point of delivery or calculate it by converting from
weight using the following conversion factors:
Material |
Conversion Factor |
|
Gravel, bank run or crusher run |
2700 lb/yd³ |
1600 kg/m³ |
Limestone, crusher run |
2500 lb/yd³ |
1485 kg/m³ |
Gravel, Size No. 4 and 57 |
2500 lb/yd³ |
1485 kg/m³ |
Limestone, Size No. 4 and 57 |
2400 lb/yd³ |
1425 kg/m³ |
Crushed slag [1] |
|
|
less than 80 lb/ft³
(1300 kg/m³) |
2000 lb/yd³ |
1185 kg/m³ |
80 to 90 lb/ft³
(1300 to 1450 kg/m³) |
2100 lb/yd³ |
1250 kg/m³ |
90.1 to 100 lb/ft³
(1451 to 1600 kg/m³) |
2300 lb/yd³ |
1365 kg/m³ |
100.1 to 125 lb/ft³
(1601 to 2000 kg/m³) |
2700 lb/yd³ |
1600 kg/m³ |
more than 125 lb/ft³
(2000 kg/m³) |
3000 lb/yd³ |
1780 kg/m³ |
Recycled Portland Cement Concrete |
2250 lb/yd³ |
1335 kg/m³ |
Recycled Asphalt Concrete Pavement |
2650 lb/yd³ |
1570 kg/m³ |
[1] Based on average dry rodded weight determined by the Laboratory. The conversion
factors listed are the long gradation weights. These numbers are based
on the dry rodded weights of Nos. 67, 57, or 8 gradation. The Department will determine slag
weights based on weights obtained from the original source. |
The
Department will classify salvaged or mixed materials according to the material
that makes up the majority of the mixture.
Ensure
that the moistures of the delivered material are less than 2 percent above
saturated surface dry condition; if not, the Department will base payment on
the dry densities and dry weights.
Furnish
freight bills, and weight and volume evidence according to 109.
410.07 Basis of Payment. The
Department will pay for accepted quantities at the contract prices as follows:
Item
Unit
Description
410
Cubic Yard or Ton Traffic
Compacted Surface, Type A or B
(Cubic
Meter
or Metric Ton)
410
Cubic Yard or Ton Traffic
Compacted Surface, Type C
(Cubic
Meter
or Metric Ton)