I am trying to find out how much rock I will need for 792 Sq. Ft @ 4" deep for 2" - 3" egg rock. If any one can help that would be great, because the rock people were just guessing out of their arse. I am guessing 5 tons...but really have no clue.
792 x .33 (4 inches)=261.36/27=9.68 cubic yards. To convert 2-3" rock from yards to tons: 9.68 x 1.19=11.51 tons
I work for a concrete co. and do rock/ concrete calcs daily, so I hope I am in the ball park. With rock you may be able to stretch it a little further than concrete. I would get 10-11 tons and that should make it.