Gromislaw Chmielowiec
Gromislaw Chmielowiec voted up Larry Patterson's answer
100 lbs. Per cubic foot is a pretty accurate average for gravel.  That would be 20 cubic ft. Per ton.  (Nomad1 may be more accurate than myself.  Weights vary greatly depending on various factors)  If you put it down 6 inches deep, every square foot would take 0.5 cubic feet (6/12 x 1 x 1).  … Read more