Pay Unit
Measure to the Nearest
Pay to the Nearest
Crusher Run Subbase
ton, CY, SY [t, m3, m2]
0.05 ton, ft, ft [0.05 t, 0.5 m, 0.5m]
0.05 ton,CY, SY [0.05 t, m3, m2]
Pit Run Subbase
ton, CY, SY [t, m3, m2]
0.05 ton, ft, ft [0.05 t, 0.5 m, 0.5m]
0.05 ton, CY, SY [0.05 t, m3, m2]
Subbase
ton, CY, SY [t, m3, m2]
0.05 ton, ft, ft [0.05 t, 0.5 m, 0.5m]
0.05 ton, CY, SY [0.05 t, m3, m2]
301.5.2 Referenced Sections for Direct Payment 1 When specified, the engineer will measure and pay for:
209, Watering.
301.5.3 Determination of Pay Factor301.5.3 Determination of Pay Factor
The engineer will evaluate aggregate gradation tests for subbases and bases in accordance with Subsection 113.1, Acceptance of Aggregate, and will apply pay adjustments. The maximum pay factor per lot will be 1.00. 301.5.4 Pay Adjustments
1 The engineer will calculate pay adjustments for aggregate gradation for subbases and
bases as follows: Aggregate Gradation: Where:
PAA
=
CB x (PFA -1) × LSA
PA CB
= =
PF
A
=
LS
A
=
Pay Adjustment for Aggregate Gradation ($$) Unit Contract Price for the respective Aggregate Subbase, Base Course, and Bed Course Material pay item ($$) Aggregate Gradation Pay Factor for evaluated lot Lot Size for Aggregate Gradation evaluated lot (short ton [metric ton])
A
220
Blended Base and Blended Subbase
302.1DESCRIPTION
This section describes the requirements for furnishing and placing blended base or blended subbase on a prepared surface.
302.2MATERIALS
1 Provide materials in accordance with the following:
Material
Subsection
Aggregate
803
Reclaimed Asphalt Pavement (RAP)–Existing asphalt pavement milled from the roadway within the project limits.
Reclaimed Portland Cement Concrete Pavement (RPCCP)–Existing concrete pavement removed from the roadway within the project limits.
302.3EQUIPMENT
1 Unless otherwise approved by the engineer, use a pugmill capable of thorough and
consistent blending to mix aggregate, RAP, RPCCP, and water for blended bases and subbases.
302.4CONSTRUCTION
302.4.1 General 1 Remove the existing plant mix pavement, concrete pavement, or both from the roadway;
haul it to the plant site; and stockpile it in accordance with Subsection 202.4.5, Removal of Surfacing, Concrete, Sidewalks, Curbs, Gutters, Median, Double Gutter, Etc. Minimize contamination of the milled asphalt pavement or removed concrete pavement. If required, crush the RAP/RPCCP to the maximum size specified, and stockpile it separately. 2 Before blending the virgin
crushed base aggregate with RAP/RPCCP, obtain virgin crushed base aggregate samples at the direction of the engineer in accordance with the Materials Testing Manual. Sample the virgin crushed base aggregate from the belt immediately before blending it with RAP/RPCCP.
3 Mix the RAP/RPCCP, virgin crushed base aggregate, and water.
221
Blended Base and Blended Subbase