Question: 1 brass means how much m3?
Answer: It is used as a measure of quantity for loose material (like sand, metal, etc). It equals one hundred cubic feet volume, (e.g. a cart with load bed of 8' x 5' size, when loaded with sand which levels 2.5' high, the quantity is (8 x 5 x 2.5 / 100 =) 1 brass.