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.

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 rains, 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 weights to cubic yards (cubic meters) according to the following:

Aggregate	lb/yd^3	kg/m^3
Gravel, bank run or crusher run	2700	1600
Limestone, crusher run	2500	1500
Gravel, Nos. 4 and 57	2500	1500
Limestone, Nos. 4 and 57	2400	1400
Crushed Slag, less than 80 lb/ft^3 (1300 kg/m^3)[1]	2000	1200
Crushed Slag, 80 to 90 lb/ft^3 (1300 to 1450 kg/m^3)[1]	2100	1250
Crushed Slag, 90 to 100 lb/ft^3 (1450 to 1600 kg/m^3)[1]	2300	1350
Crushed Slag, 100 to 125 lb/ft^3 (1600 to 2000 kg/m^3)[1]	2700	1600
Crushed Slag, more than 125 lb/ft^3 (2000 kg/m^3) [1]	3000	1800
Recycled Portland Cement Concrete	2250	1350
Recycled Asphalt Concrete Pavement	2650	1600
[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)