Sand had to be taken out before the test to find out where to find the slope at an angle on the side and then put the stone pavement, and the heap of sand to a load and increase the security of sand piles
and how Vibro Compaction to make a pile of sand, it is a gap less Island, you can get better, and the technique used to do it by drilling holes, and then send the vibrator down to shake the sand more tightly.
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