Re: Digging a level trench with a backhoe

Posted by Tim, Ohio on January 09, 2007 at 12:21:32 from (128.146.239.246):

In Reply to: Digging a level trench with a backhoe posted by Terry Edwards on January 09, 2007 at 09:31:05:

Not sure if you know what you are doing or not, but
we did a leach field recently. The design we
used was a continuous trench that went about 40
feet before it was u-turned and came back along
the ditch that had been just dug. When we came
back to the the beginning end of the first ditch
with the second it was u-turned again. This was
repeated until the combined length equaled what
was required for the size of the household. Each
successive ditch was a little lower than the previous one. At the end of each ditch in the
u-turn bend a mound was left about a foot high
in the ditch. So, as the water from the septic
tank entered the first ditch it would fill up
until it reached the top of the mound at the first
u-turn. This slowed the water so it would have
time to leach into the ground. As the level
in the first ditch rises it eventually overcomes
the hump at the first u-turn, then slowly overflows into the next ditch. The second ditch
is lower than the first and so on. All ditches
were filled with 1" or larger river rock (round
agregate) with black flex tile having holes, not
slits in the tile. The top of the gravel was covered with landscape fabric and then backfilled
with dirt to grade.

Tim, Ohio

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