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Old Septic Tank Caved in
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CptDondo
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Posts: 45
Old Septic Tank Caved in
wrote:
big bopulders and rocks BAD IDEA! the dirt that musat o on top will
forever be leaking between boulders and sinking.
you shoulds of filled with gravel little sink with that, or filled
with plain dirt sprayed with water and compacted.
what you added was the worst choice you could of made.....
sorry to give you bad news......
Actually... the volume between rocks is based on the variety of size....
In other words, "poorly graded" - i.e. all the same size - rocks have
a voids ratio of 0.4, meaning there is 40% air/water/whatever between
them. The size of the rocks doesn't matter. Boulders are just as
good/bad as pea gravel.
So... If you want to fill in, make sure you get "well graded" gravel,
meaning a little of every size. or just throw whatever you have in,
then, if your soil allows it, hose in dirt....
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