1 cubic yard = 27 cubic feet
1 ton = 2000 lbs
1 acre = 43,560 square feet
3 x 3 x 3 = 1 cubic yard
BOULDERS WEIGHTS BOULDERS COVERAGE (per ton)
1' boulder = 45 lbs 1' to 2' boulders = 14 square feet
2' boulder = 250 lbs 2' to 3' boulders = 9 square feet
3' boulder = 700 lbs 3' to 4' boulders = 6 square feet
4' boulder = 1,500 lbs
5' boulder = 2,500 lbs COBBLESTONE (per ton)
3" to 12" = 19 square feet
BOULDER QUANITY PER TON
1' to 2' boulders = 25 boulders per ton
2' to 3' boulders = 4 to 6 boulders per ton
3' to 4' boulders = 1 to 2 boulders per ton
4' to 5' boulders = 1 boulder per ton
CALCULATE A CUBIC YARD: length x width x depth---divided by 27 = the cubic yard
(use .5 for 6 inch measurements)
1 YARD COVERS A AREA AT: 2" deep--162 square feet
3" deep--108 square feet
(note: all figers are approx. natural stone sizes and weights change with the stone(s)).