These measurements will not be precise, but will give you a good estimate of how much you need!
Material Instructions
For Peagravel: Put 1 inch in deep
For Driveway Gravel: Put in 8 foot wide (width of truck bed when being delivered) and put 2 inches deep
For 1-1/2" Gravel: Put 2.5" Deep
For 2-4" Nolichucky: Put 3.5" Deep
For 4" and Up Nolichucky: Put 5" Deep