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.
Dig out the rough dimensions of the leach field with the machine. Dig down 36 inches. Use a shovel to finish any edges and then rake the bed even. Add 17 inches of gravel to the leach field bed and rake it smooth. Measure the pipes for the correct footage and mark with a pencil where you need to cut them.If you are doing a three-pipe system you need 170 feet of pipe cut three times.ig out the rough dimensions of the leach field with the machine. Dig down 36 inches. Use a shovel to finish any edges and then rake the bed even. Add 17 inches of gravel to the leach field bed and rake it smooth. Measure the pipes for the correct footage and mark with a pencil where you need to cut them.