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The first type is called a French Drain. For what it's worth, these may have been invented in France, but the invention of this style of drainage system is attributed to a man named Henry Flagg French from Massachusetts in the 1860's.
This is basically a trench dug around the foundation, sloping away from the foundation, in which is placed a perforated pipe. The trench is then backfilled with a porous material, typically gravel, to fill the trench and allow the water to pass down into the pipe where it is channeled away from the house where it can be disposed of without causing any harm. |