Dense-graded base course denotes crushed stone aggregates of varying particle sizes, typically 1-1/2 inches and below, creating a compact layer of stone with minimal voids.

Common uses for base coarse crushed stone
• Foundation for asphalt pavement
• Foundation for concrete pads and pavements
• Unpaved roads and shoulders
• Backfill for pipe and underground utilities
• Cement-treated base

Sizes and Designations
Sizes and designations vary by location due to governing agency requirements.
Common designations include, but are not limited to: Base, Subbase, Dense Graded Base,  -Crushed Stone Base, Graded Aggregate Base (GAB), Aggregate Base Coarse(ABC), Macadam Base Coarse (MBC)