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It is recommended that there be 2 cubic feet (0.057 m 3) of soil for every 1 cubic foot (0.028 m 3) of tree canopy. [6] Therefore, a five by six foot tree box must contain at least two feet of soil media in order to sustain a tree with a canopy of thirty square feet. Underneath the layer of soil lies the underdrain.
Trench drains are commonly confused with French drains, which consist of a perforated pipe that is buried in a gravel bed, and which are used to evacuate ground water. A slot drain , also wrongly associated with a trench drain, consists of a drainage pipe with a thin neck (or slot) that opens at the ground surface with sufficient opening to ...
A diagram of a traditional French drain. A French drain [1] (also known by other names including trench drain, blind drain, [1] rubble drain, [1] and rock drain [1]) is a trench filled with gravel or rock, or both, with or without a perforated pipe that redirects surface water and groundwater away from an area.
May 24—NEW ALBANY — Part of New Albany's Main Street has been closed off as Indiana American Water works to replace pipe underneath the road. The project was set to start mid-April, but was ...
Usually, pipe drains or ditches are preferable to wells. However, when the soil consists of a poorly permeable top layer several meters thick, overlying a rapidly permeable and deep subsoil , wells may be a better option, because the drain spacing required for pipes or ditches would be considerably smaller than the spacing for wells.
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