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hockeyologist
2007-12-14, 07:05 PM
Has any one had any problems of shifting over a period of time and silt being washed into the trench bottom through the louvers on sides of chambers . We've tried putting a small amount of gravel under chambers , this helps some , soil type is sandy loam. System installed at 24" max depth. Back fill native soil.
Pete Morici
2008-01-04, 03:07 AM
Has any one had any problems of shifting over a period of time and silt being washed into the trench bottom through the louvers on sides of chambers . We've tried putting a small amount of gravel under chambers , this helps some , soil type is sandy loam. System installed at 24" max depth. Back fill native soil.

Here's a couple of ideas.....

1. Did you install the chambers in a pre-existing field that may not be percolating well?

2. Is there a low spot in the ground just above the chambers that would puddle water in a heavy rain and saturate the field?

3. Did you apply any landscape cloth over the louvers to prevent mud form getting back into the chambers?

4. Did you drive rebar stakes around the chambers to prevent shifting?
hockeyologist
2009-03-09, 09:18 PM
soil type in alabama sandy loam , at 24" some sandstone , no fabric over chambers , but have proper couplings and end caps
Septicpal
2009-11-13, 07:48 PM
Has any one had any problems of shifting over a period of time and silt being washed into the trench bottom through the louvers on sides of chambers . We've tried putting a small amount of gravel under chambers , this helps some , soil type is sandy loam. System installed at 24" max depth. Back fill native soil.
I have seen this phenomenon in Texas also. None of these chamber systems were mine, but became failing systems after several years. I checked the grade on the chambers compared to the as-built drawings and house stub-out, the grades matched. So I assumed that the chambers didn't settle but had filled up with the backfill material. The soil that the chambers were placed on was different from the backfill. The soil that was in the chambers matched the backfill material........