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.
Step 2. Verify if you need a permit to build the septic tank drain field or if you need to have the site inspected prior to starting work. Digging the field is a lot of hard work, but having to remove it and start over again is even worse.Verify all of the relevant laws and regulations prior to starting this project.ontact the Authorities. Verify if you need a permit to build the septic tank drain field or if you need to have the site inspected prior to starting work. Digging the field is a lot of hard work, but having to remove it and start over again is even worse.