How Much Does 1 Cubic Yard of #57 Stone Weigh?
One cubic yard of clean, washed #57 stone weighs approximately 2,565 pounds (1.28 US short tons) based on an ASTM bulk loose density of 95 lbs per cubic foot ($2,565\text{ lbs/yd}^3$).
Why #57 Stone is Lighter than Crusher Run:
#57 stone is screened and washed to completely remove stone dust and fines. Because the aggregate particles are all uniformly sized between 1/2" and 1", high air void space exists between stones, resulting in exceptional water drainage capability and a lower bulk weight of 95 lbs/ft³ (compared to 100–110 lbs/ft³ for dense base mixes).
Best Applications for #57 Crushed Stone
Civil engineers and contractors specify #57 stone for high-flow drainage and free-draining structural applications:
| Application |
Why #57 is Specified |
Recommended Depth |
| French Drains & Curtain Drains |
Washed clean of sediment to ensure zero clogging of pipe perforations |
12 to 24 inches in trench |
| Septic Drain Fields |
Meets county health department codes for free-flowing percolation |
6 to 12 inches under pipes |
| Driveway Surface Layer |
Angular edges prevent severe displacement while letting rain filter through |
2 to 3 inches over compacted base |
| Retaining Wall Weep Backfill |
Relieves hydrostatic water pressure against wall blocks |
12+ inches directly behind wall |