Measure the length of the wall in feet. Determine the height of the wall in feet. Since bricks (and thus the wall) are made 10" (25. 5 cm) thick, multiply the length by height by 0. 83 (10 in = . 83 ft). Divide that by 27. This is the total volume in cubic yards of the wall.
Sand (about half - 50% of your total volume). Sand is usually sold by the ton - you can calculate tonnage by multiplying your volume by . 83. The sand should be relatively fine sand - beach sand or slightly larger works fine. NOTE: The amount of sand you mix in is very dependent upon the clay you have available, your climate, and how strong you want the wall. It’s entirely relative - and there’s really no wrong way to do this. Clay (about a third of your total volume). Again, clay or fill dirt is usually sold by the ton. Multiply your volume by . 9 if it is dry, . 7 if it is wet. Straw (about 10 - 20% of your total volume). Straw is sold in bales of various sizes. The most common “big” bales are 14"x18"x36" (35. 5 centimeter (14. 0 in) x 45. 7 centimeter (18. 0 in) x 91. 4 centimeter (36. 0 in), which is . 15 cubic yards. So multiply your total volume by . 015 to get the number of “big” bales you’ll need.
