CRUSHED LIMESTONE

Greystone Quarry 2007

Limestone is graded according to nominal size; smaller numbers indicate a larger particle size and bigger numbers indicate a smaller particle size. A #2 is a 2-1/2" nominal size, a #57 is a 1" nominal and a #8 is a 3/8" nominal.

   Sizes larger than 4"-6" are denoted by specific names, such as Rip-Rap and Gabion Stone.

    Crusher run products contain all sizes smaller than their name implies; 1-1/2" crusher run contains a maximum particle size of 1-1/2" and has about 35% smaller than 1/4" ( or a No. 4).

    Sizes 1/4" or smaller are referred to by the number of openings per inch; a 1/4" is a #4, a 1/40" is a #40 and a 1/200" is a #200.

    Crushed limestone weighs different amounts depending on size and amount of compaction.  Typical densities are given as in place densities.

• SIZES 1,2,3, & 4
  These larger sizes are typically used around construction sites, muddy areas, base courses for driveways, stabilizing soft or wet areas and erosion control.  This stone is difficult to walk on and does not grade smoothly.  Usually, a smaller grade stone is used on top of this larger size.  These sizes are also used as railroad ballast and in waste water treatment.
• SIZES 57,67, & 7
  Very versatile size, used in concrete, asphalt, septic drain fields, under concrete slabs and backfilling basement walls.
• SIZES 8, 9
  Used for treating roads and as abrasives for traction on snow and ice, pipe bedding, around barn yards and to smooth out or top larger sizes.  These sizes grade to a smooth surface and are easy to walk on, but are not as stable as larger sizes and will rut or kick out.
• MANUFACTURED SAND
  This product is the smallest available, and is crushed rather than naturally ocurring in a river or beach.  Sand is used primarily in concrete, asphalt, barns and as filter media.  Play sand or silical sand is preferable for use in sand boxes and recreational projects.
• CRUSHER RUN,  3 in., 1-1/2 in., 3/4 in., and 1/2 in.
  All crusher run sizes contain a top size as indicated down to very fine sand.  When properly compacted, these sizes pack very tightly and provide a smooth, durable surface.  Vibratory rollers or other suitable compactors are necessary, and can yield densities up to 140 pounds per cubic foot.  This material is used mostly in road construction as base material and as shoulders.
• RIP-RAP & GABION
  Very large sizes,  up to 16 inches; used for erosion control, slope protection and landscaping.  These sizes are difficult to haul and grade.

CLICK HERE TO SEE A CHART OF SIZES, USES AND DENSITIES.

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