The boulders will give a margin of safety compared to a big hole that you'd
not be able to climb out of. *Boulders piled near the top prevent you from
falling very far.

if you fill it in with the proper material settling will be minimal.

I had a execuvation around my foundation for water control. I HAD to
have that area backfilled to grade with gravel.

so the area didnt sink since a sidewalk was going on top.

someone had done this before and the sidewalk was terrible although
fairly new. cracked and pitched inward on the house side.

boulders are fine if you dont mind a lifetime fill project.

every time you add dirt is a hassle resedding, and costly too. besides
a uneven trip hazard cutting grass......

On 25 Apr 2007 19:49:34 -0700, "
wrote:



The boulders will give a margin of safety compared to a big hole that you'd
not be able to climb out of.
oulders piled near the top prevent you from
falling very far.

if you fill it in with the proper material settling will be minimal.

I had a execuvation around my foundation for water control. I HAD to
have that area backfilled to grade with gravel.

so the area didnt sink since a sidewalk was going on top.

someone had done this before and the sidewalk was terrible although
fairly new. cracked and pitched inward on the house side.

boulders are fine if you dont mind a lifetime fill project.

No, you are dead wrong on this. A boulder is a quick and efficient
way to start this. Excellent idea. Of course you must also add a
little sand and dirt all sizes of rocks to go with the boulder.

But a bolder is the best and quickest way to start filling any hole.
Very lucky to have one and it will work perfectly when used with a
rich mix of other sized material.

Anyone who disagrees with that is probably a complete and worthless
idiot who has never filled a hole in their life (except in their
imagination).







every time you add dirt is a hassle resedding, and costly too. besides
a uneven trip hazard cutting grass......

On Apr 25, 10:19�pm, Harry K wrote:
On Apr 24, 1:24 pm, " wrote:





On Apr 24, 8:12?am, jiml wrote:

?I think if he sods it, a good estimate is maybe 3 rains and 2
waterings ie. about 3 months and it will stabilize forever. ? You are
way out of line on your concerns.

On 23 Apr 2007 04:33:50 -0700, "
wrote:

On Apr 22, 11:22?pm, deke wrote:
On Mon, 23 Apr 2007 02:33:37 GMT, mstrspy wrote:
That's what I was thinking, sand, but I had no sand on hand this
weekend and needed to fill that hole with something.

A few years back, I found another similar hole but smaller. ?id the
same thing, filled it with bolders and I haven' seen any errosion.

I'm not sure why that other hole was there. Does a typical septic
system have two chambers spread appart?

On 22 Apr 2007 19:21:13 -0700, Joe wrote:

mstrspy wrote:
I recently discovered a small hole in my back yard filled with water,

snip

This past weekend I filled the hole with rocks and bolders.

Really, really bad idea. Before going further, get a load of sand
(that's SAND!) and start filling it. Bank run gravel may settle
eventually, but sand will compact between the rocks many times faster.
Keep it a foot below grade until next summer, then do the topsoil and
grass seed routine.

HTH

Joe

?hat you did was fine. ?Excellent in fact.
ust put 6 inches of
topsoil and grass sod over your 6 inch deep depression for now and
then add sand or topsoil as it continues to settle over the next few
years.

You know our land is continually moving and corrections have to be
made even in those places where there was no hole. ?Telephone poles
and fences show leaning posts after just a very few years and animals
such as moles, gophers, ground hogs and armadillos change our
landscape. ?
y neighbors buy a couple of cubic yards of sandy loam
to level their places again.- Hide quoted text -

- Show quoted text -

big boulders bad, as the dirt he planned putting on top filters down
it migrates into the old leach field, and requires continiuos
replacement.

lots of old septic tanks were reused as a leach field for downspout
drains. hopefully thats not the case here.

abandoned and forgotten septic tanks and pits left over from sewer
disposal are pretty common.

these were abandoned long before laws were enacted on proper disposal.

my best friend uses his old tank for downspout water disposal. I saw
in the tank recently his dad filled it with garbage when it was taken
out of service over 50 years ago. he dug it up to check the lid, which
was still in remarkably good condition for its over 100 year age.

my buddy was concerned the lid might be rotting.

truckload of sand way cheaper than bags- Hide quoted text -

- Show quoted text -

Your wrong

My home was built on farmland in 1950/ A hand dug well was in my back
yard and filled with rock and boulders at that time 1950. a neighbor
watched it being filled in.......

I moved here in 1972 and it was still the neighborhood dirt dump site
and continued to be till the 1990s. I added many truckloads of dirt to
finally stabilize it.

The water tends to carry the fill away. Note the OP tank had water in
it draining no doubt to the original field.

Just dump dirt boulders in there and it will endlessely sink- Hide quoted text -

- Show quoted text -

So you think you have water running through the bottom washing the
dirt out? *See any difference between that and an abandonded septic
tank?

If it is as bad as you say it is, why haven't you fixed it? *Dig down
a couple feet and pour a concrete cap is one quick and easy solution.

Harry K-

In my case the sink area was a useful place to dispose of stuff, rocks
and dirt, till I tired of it , at one point it became a natural pond
when it rained. family concerned about mosquitoes

So I finally finshed filling it in with several truckloads of topsoil.

about 10 years later I put a 16 by 20 foot shed with concrete floor on
the site. it had quit sinking by then.

On 26 Apr 2007 06:14:07 -0700, "
wrote:


In my case the sink area was a useful place to dispose of stuff, rocks
and dirt, till I tired of it , at one point it became a natural pond
when it rained. family concerned about mosquitoes

So I finally finshed filling it in with several truckloads of topsoil.

Seems to me, you should have waited until you actually had mosquitoes
before filling it. The mosquitoes you had would have died in a couple
days and no more would have bred iiuc.


about 10 years later I put a 16 by 20 foot shed with concrete floor on
the site. it had quit sinking by then.