Pay Item
Pay Unit
Measure to the Nearest
Pay to the Nearest
Dust Control Agent
TON [t]
0.05 ton [0.05 t]
0.05TON [0.05 t]
215
Aggregate Materials
216
Aggregate Subbase, Base Courses, and Bed Course Material
301.1DESCRIPTION
1 This section describes the requirements for placing one or more courses of aggregate
on a prepared surface.
301.2MATERIALS
1 Provide materials in accordance with the following:
Material
Subsection
Aggregate
803
301.3EQUIPMENT
1 Unless otherwise approved by the engineer, use a pugmill capable of thorough and
consistent blending to mix aggregate and water for subbases and bases.
301.4CONSTRUCTION
301.4.1 Bed Course Material 1 Shape
the bed course material to coincide with the bottom surface of the item or appurtenance to be constructed on the bed course material. Tamp or compact the bed course material into place. No density requirements will apply. 301.4.2 Subbases and Bases 301.4.2.1 General
At least 14 calendar days before placement, submit aggregate samples for determination of optimum moisture content, maximum density, and R-value. Obtain the samples in the engineer’s presence. 301.4.2.2 Lot and Sublot Sizes 301.4.2.2.1 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 base or subbase represented by one test or a maximum of 1000 ton [1000 t].
217
Aggregate Subbase, Base Courses, and Bed Course Material