transitive. 1  To reverse the winding or twisting of: unwind a ball of yarn. 2  To separate the tangled parts of; disentangle. 3  To free (someone) of nervous tension or pent-up energy.
A leach field is an important part of a septic system. It disperses fluid from the septic system over a large area of soil adjacent to the building it services.he distribution box has another pipe that leads to the leach field. From this pipe, you will dig the trenches. Decide where to dig your trenches. You will need to dig three trenches, each about 12 inches wide and 20 feet long.
Building a septic drain field is time-consuming but pays off in the long run. Septic tanks last from 15 to 30 years. Unfortunately, drain fields, also known as leach fields, do not last that long. If placed in an area with good ground absorption, a drain field can last up to 10 years.lace the perforated pipe into the trench on top of the gravel and, using a clamp, attach the pipe to the septic tank drain. Place another half-inch of gravel on top of the perforated pipe and some along the sides of the pipe. Place the thin cloth over the gravel to prevent loose dirt from getting into the rocks.