How does a dry well work?
The principle of well lost The well rainwater drainage work indeed now by infiltration in the permeable layers of the ground, which makes it possible to evacuate rainwater simply and quickly.
Equally What size for one sinkhole ? If this is not known, the volume of the well is obtained on the basis of a rainfall of 50 l/m2 by multiplying the waterproofed surface by 0.05 m. (Example for a house with a roof of 100 m2, the useful volume will be 100 x 0.05 = 5 m3).
Digging a cesspool Place geotextile at the bottom and back up the edges of the pit. This well will then be filled with stones (or old broken tiles)… then finally with gravel and sand. Excess water will run off into this pit and eventually seep down.
There are different types of wells. In general, an amalgam is made between the traditional well, also called a dug well, and a borehole. The traditional well, made of masonry and still found on the grounds of some old houses, is a shallow well built to collect mainly surface water.
A drain designed to move surface water can usually discharge it onto a street because only small amounts of water pass through it. On the other hand, a quarry designed to drain water from a flood should be emptied into a ditch or dry well, as there may be larger amounts of water.
Main advantage of this type of well: it is not necessary to dig very deep to collect the water, “between 7 and 8 meters, for a good traditional well” according to José Estevez. Moreover, the water not being deep, a surface pump, more economical equipment than borehole pumps, will be sufficient.
An artesian well must be located; at a distance of 15 meters (50 feet) or more from a sealed wastewater treatment system (septic tank), at a distance of 30 meters (100 feet) or more from any unsealed wastewater treatment system ( leaching field).