Crushed Stone and Gravel Coverage
1 ton covers approximately–
220 sq. ft. at 1" depth
110 sq. ft. at 2" depth
73 sq. ft. at 3" depth
36 sq. ft. at 6" depth
22 sq. ft. at 9" depth
Rule of thumb:
1.5 tons per cu. yd.

Wallstone, Boulders and Flagging
Drywall Stone:
12 to 15 face ft./tn.
(1 ton will build a wall approx. 1' x 1' x 15').
Boulders for Retaining:
4.5 face ft./tn.
Flagging:
1" thick = about 13 lbs./sq. ft.
1.5" thick = about 20 lbs./sq. ft.