310Stockpiled Aggregate

Stockpiled Aggregate

310.1DESCRIPTION

1 This section describes the requirements for furnishing and placing aggregate in stockpiles.

310.2MATERIALS

1 Provide materials in accordance with the following:

Material Subsection Aggregates 803 Sodium Chloride 803.12.4

310.3EQUIPMENT

1 Unless otherwise approved by the engineer, use a pugmill capable of thorough and consistent blending to mix water and aggregate or sodium chloride and aggregate.

310.4CONSTRUCTION

310.4.1 General

1 Furnish, deliver, and place aggregate in stockpiles at designated sites. Ensure that the sites are firm, smooth, and well drained. When required, clear and grub sites in accordance with Section 201, Clearing and Grubbing. Remove and stockpile topsoil in accordance with Section 207, Topsoil.

2 To prevent the intrusion of soil or foreign material, place a bed of the same aggregate being stockpiled under the stockpile. Make the bed at least 6 in [150 mm] deep, and extend it at least 10 ft [3 m] beyond the edge of the stockpile.

3 To prevent mixing, separate stockpiles of different types or sizes of aggregates by spacing them at least 30 ft [10 m] apart or by using suitable walls or partitions.

4 Do not use stockpiling methods that allow contamination or excessive degradation of the aggregate. The engineer will use gradation tests to evaluate degradation. If samples fail to meet gradation requirements, the engineer will reject stockpiled aggregates. Change stockpiling procedures to provide the specified gradation.

5 When specified, blend sodium chloride uniformly with the aggregate. Furnish weigh [mass] tickets with each load of sodium chloride.

Stockpiled Aggregate SECTION 310

6 Do not allow sodium chloride to leach into surrounding surface or ground water.

310.4.2 Lot and Sublot Sizes

310.4.2.1 Weight [Mass] Measurement

1 A lot is defined as the quantity of material represented by five tests or a maximum of 5000 ton [5000 t], and a sublot is the quantity of stockpiled aggregate represented by one test or a maximum of 1000 ton [1000 t].

310.4.2.2 Volume Measurement

1 A lot is defined as the quantity of material represented by five tests or a maximum volume 2500 yd3 [2000 m3], and a sublot is the quantity of stockpiled aggregate represented by one test or a maximum of 500 yd3 [400 m3].

310.4.3 Acceptance

1 Aggregate gradation will be accepted with Subsection 113.1, Acceptance of Aggregate.

310.5MEASUREMENT and PAYMENT

310.5.1 General

1 The engineer will measure:

yard [cubic meter]. Natural moisture in the material will not be deducted before measurement and payment . No deduction will be made for the weight [mass] of salt in the mixture. Stockpiles volumes will be measured using volumetric measurements in accordance with Subsection 101.5, Definitions. Aggregate beds will not be measured separately and will be considered incidental to Stockpiled _____ and Maint Stockpile Type _____.

2 The department will pay as follows:

Pay Item

Pay Unit Measure to the Nearest Pay to the Nearest Maint Stockpile Type _____ ton, CY [t, m3] 0.05 ton, ft [0.05 t, 0.5 m] 0.05 ton, CY [0.05 t, m3] Sodium Chloride ton [t] 0.05 ton [0.05 t] 0.05 ton [0.05 t]

Stockpiled Aggregate SECTION 310

Pay Item

Pay Unit Measure to the Nearest Pay to the Nearest Stockpiled _____ ton, CY [t, m3] 0.05 ton, ft [0.05 t, 0.5 m] 0.05 ton, CY [0.05 t, m3]

310.5.3 Determination of Pay Factor

1 The engineer will evaluate aggregate gradation tests for stockpiled material in accordance with Subsection 1 13.1, Acceptance of Aggregate, and will apply pay adjustments. The maximum pay factor per lot will be 1.00.

310.5.4 Pay Adjustments

1 The engineer will calculate pay adjustments for aggregate gradation for Stockpile Aggregate as follows:

Aggregate Gradation: PA A = SA x (PFA -1) × LSA

Where: PAA = Pay Adjustment for Aggregate Gradation ($$) SA = Unit Contract Price for the respective Stockpiled Aggregate pay item ($$) PF A = Aggregate Gradation Pay Factor for evaluated lot LSA = Lot Size for Aggregate Gradation evaluated lot (short ton [metric ton], CY [m3])

P avements