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.
A drain field should not be placed in an area that has poor drainage. A septic drain field should be 10 feet from the home or any body of water, and 10 feet from gardens and edible plants. Dig the trenches. Each drain-field trench should be at least 3 to 4 feet wide and 3 to 4 feet deep.There should be at least 100 feet of drain field for a 1,000-gallon septic tank. This can be accomplished by making four trenches 25 feet long or two trenches 50 feet long.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.