When you know the number of sack and that comes to a sand wangkrasop. Want to pedal for sale water parallel to the direction of flow of the water and the sand is sand wangkrasop wangkrasop method overwrites the area of sand is not filled sanit. ikkrasop such as sand, and pakkrasop, facing in the direction opposite to the flow of water, and then to walk on the floor in the sack is to provide stable and dense water barrier section wangkrasop a layer over the joints of the lower layer ground and sacks the rest area to emerge out of approximately one half of a jumbo.
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