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French drains are primarily used to prevent ground and surface water from penetrating or damaging building foundations and as an alternative to open ditches or storm sewers for streets and highways. Alternatively, French drains may be used to distribute water, such as a septic drain field at the outlet of a typical septic tank sewage treatment ...
Subsurface drains, on the other hand, are designed to manage water that seeps into the soil beneath the planting surface. French drains, which are gravel-filled trenches with perforated pipes at the bottom, are the most common type of subsurface drain. Trench drains, which are similar but shallower and wider, are also used in some situations. [4]
The national average cost of French drains is $9,250, according to Angi, a service that connects users with home and landscaping pros. Specifically, yard trench drains cost about $30 to $90 per ...
Infiltration will occur where local groundwater elevation is higher than the sewer pipe. Gravel bedding materials in sewer pipe trenches act as a French drain. Groundwater flows parallel to the sewer until it reaches the area of damaged pipe. In areas of low groundwater, sewage may exfiltrate into groundwater from a leaking sewer. [6]
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French was born in 1813 and published Farm Drainage in 1859, but a quick Google Books search shows that the term "French drain" was used for this sort of drain as early as 1738. Here are English records from 1808 describing contracts to build "French drain"; here's a citation from Ohio from 1851 ; here are some Canadian records from 1853 .
The comments came in response to Trump’s declaration, just two weeks ahead of his inauguration at the White House on 20 January, that the US should buy Greenland.