Surfacing material the surface layer of gravel is poured on top of the base layer and completes the crushed.
Best stone for driveway base.
Installing crushed granular based gravel on a compacted subgrade is the best start to a strong base.
Sometimes stone dust or fines will be intermixed with the aggregate to reduce voids and better hold this layer in place.
The 9 best types of gravel for your driveway.
If heavier vehicles such as large trucks will use the driveway regularly the gravel should be even deeper up to 12 inches.
Also called clean stone this base gravel is made from machine crushed stone and is composed of irregular rock fragments.
The base is a layer that also consists of crushed stone but slightly smaller stones than the sub base in some cases stone dust or stone fines will be mixed with the aggregate to reduce voids and will hold the layer in place better.
The top layer smaller gravel put down a 4 inch layer of 57.
The two most important factors when considering base materials are composition and thickness.
The gravel base for a driveway should be a minimum of 4 inches deep.
This smaller gravel fits well against and between the larger gravel of the foundation forming a more solid base for the driveway.
Base the base layer of the driveway is made up of slightly smaller crushed stone than the sub base layer.