how sand bags help prevent flooding, yet sand is also used for drainage since it’s porous and water easily flows through it?

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how sand bags help prevent flooding, yet sand is also used for drainage since it’s porous and water easily flows through it?

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Anonymous 0 Comments

One sandbag doesn’t do much, because as you said, sand is porous. However, put a few 50 pound bags of sand on top of each other and they are much less porous, as they are compacted.

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