#57 stone is a versatile, angular crushed stone ranging from 3/8 to 1 inch (commonly ) in size, used for driveways, drainage, and concrete bases. It is an open-graded, self-compacting material. A cubic yard weighs approx. , covering ~ at depth.
Key Specifications & Characteristics
- Size: Generally
to (often described as nominal size). - Composition: Cleaned, crushed stone (usually limestone, granite, or trap rock) with minimal fines.
- Shape: Angular and jagged, promoting interlocking for stability.
- Function: Excellent for drainage, as it is “open-graded”.
- Compaction: Self-compacting/orienting; usually requires a vibratory plate compactor or roller rather than traditional density testing.






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