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.
Designing a leach field involves spacing the perforated pipe for proper drainage. Trenches for the pipes contain gravel and may be as long as 100 feet. Each trench is 1-3 feet wide with 6 feet between each trench.Place the pipes in the leach field a minimum of 6 inches and most likely between 18 to 36 inches deep according to the Clemson Cooperative Extension.Each leach field requires an individual design as soil and water tables vary from state to state and within states.lace the pipes in the leach field a minimum of 6 inches and most likely between 18 to 36 inches deep according to the Clemson Cooperative Extension.