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  2. Granular base equivalency - Wikipedia

    en.wikipedia.org/wiki/Granular_base_equivalency

    GBE translates the thickness of different road layers to a number using a set of coefficients. So, to calculate the GBE, the depth of each layer should be multiplied by the granular equivalency factor for the material in that layer. In the next step the sum of the converted layer thicknesses is calculated. [2]

  3. Subbase (pavement) - Wikipedia

    en.wikipedia.org/wiki/Subbase_(pavement)

    Unbound granular materials are usually crushed stone, [3] crushed slag or concrete, or slate. Cement-bound materials come in multiple types. Mass concrete is used where exceptional loads are expected, with thickness usually 100 to 150 millimetres (4 to 6 in ), and optional reinforcement with steel mesh or polymer fibers.

  4. Sieve analysis - Wikipedia

    en.wikipedia.org/wiki/Sieve_analysis

    A sieve analysis (or gradation test) is a practice or procedure used in geology, civil engineering, [1] and chemical engineering [2] to assess the particle size distribution (also called gradation) of a granular material by allowing the material to pass through a series of sieves of progressively smaller mesh size and weighing the amount of material that is stopped by each sieve as a fraction ...

  5. Permeable paving - Wikipedia

    en.wikipedia.org/wiki/Permeable_paving

    Selection of the type of cellular grid depends to an extent on the surface material, traffic and loads. The cellular grids are installed on a prepared base layer of open-graded stone (higher void spacing) or engineered stone (stronger). The surface layer may be compacted gravel or topsoil seeded with grass and fertilizer. In addition to load ...

  6. California bearing ratio - Wikipedia

    en.wikipedia.org/wiki/California_bearing_ratio

    The CBR is expressed as a percentage of the actual load causing the penetrations of 2.5 mm or 5.0 mm to the standard loads on crushed stone. A load penetration curve is drawn. The load values on standard crushed stones are 1,370 kgf (13.44 kN) and 2,055 kgf (20.15 kN) at 2.5 mm and 5.0 mm penetrations respectively. [citation needed]

  7. Base course - Wikipedia

    en.wikipedia.org/wiki/Base_course

    Aggregate base (AB) is typically a mix of different sizes of crushed rock 20 mm or 34 in Aggregate Base, Class 2, is used in roadways and consists of rock particles of size 20 mm (34 in) and less. An aggregate is normally made from newly quarried rock, or it is sometimes allowed to be made from recycled asphalt concrete and/or ...

  8. Group applied for jobs using Jewish names, prior employers ...

    www.aol.com/group-applied-jobs-using-jewish...

    The positive response rate was 3.4% lower for Jewish Americans and 4.9% lower for Israeli-Americans compared to other backgrounds such as those with Italian or Irish heritage, according to the report.

  9. Aggregate base - Wikipedia

    en.wikipedia.org/wiki/Aggregate_base

    Class 3 road base. Aggregate base is a construction aggregate typically composed of crushed rock capable of passing through a 20-millimetre (34 in) rock screen. The component particles will vary in size from 20 mm down to dust. The material can be made of virgin (newly mined) rock, or of recycled asphalt and concrete.

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