How to Calculate River Rock How to Calculate Backfill For the depth, a general rule of thumb is to match up the depth to the size of the rocks. If the rocks are 2 inches in size, you need a depth of at least 2 inches. If you are choosing larger-sized rocks, you will need ...
How much is a tonne of gravel? A tonne of moderately damp gravel typically fills about 0.595 m3(cubic meters). It can be more or less dense depending on the size of the pebbles, the exact type of source rock, as well as purity. ...