Crushed Stone Quick Reference

Many get confused over what type of crushed stone to use when, so I thought I'd add a cheat sheet of what type to use when. 

In order of most crushed to least:

Stone Dust: Finely crushed granite is used as a base and compacts well.  Often is placed on top of Crusher Run to level out the base before applying concrete, asphalt, etc.

Crusher Run/Crush and Run/Perk Pack: Mix of Pea Stone and Stone Dust.  This is often used as a base, as it compacts well.  A base is needed, because the soil in your ground is susceptible to movement over time.  The base will reduce the impact of this movement on the foundation or concrete, which can crack.

Pea Stone: Pea-sized stone.  Can be crushed or rounded stone.  Popular for stone driveways, under decks and in playgrounds.

3/4 Inch Stone: Commonly crushed bluestone.  Popularly used for decoration on stone driveways, or as a base for concrete pavement, asphalt and interlocking walls.  Also used for irrigation in French Drains.