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Garage Pit Removal
- Thread starter Ben Hall
- Start date
Dan in Pasadena
Well-known member
Call your local concrete ready mix company and order single sack slurry. It is what’s used to backfill around buried utilities and provide the equivalent of 95% recompaction of the native soil - IF you were using soil. But you don’t have to place slurry in lifts and have it mechanically compacted and tested.
Actually, you could use a lesser slurry up til the last 3 feet below grade to accomplish the equivalent of 90% compaction and THEN use a stronger slurry to make 95%. But in such a small pit it’s unnecessary. Then place 2500 psi concrete the last 4” or the depth of your existing floor slab.
Actually, you could use a lesser slurry up til the last 3 feet below grade to accomplish the equivalent of 90% compaction and THEN use a stronger slurry to make 95%. But in such a small pit it’s unnecessary. Then place 2500 psi concrete the last 4” or the depth of your existing floor slab.
Richard Cranium
Well-known member
just be sure to compact it as you go.
fill with clear stone, drill 5/8 holes every foot, 6" deep around the existing slab, midway, drive in 12" rebar pour concrete & finish
drill the rebar horizontal in the ex slab to tie the new pour to the existing.
Vintage Veloce
Well-known member
Pits are cool. Just make a cover.
rsanter
Well-known member
Why fill,it in? Use it,for,storage and make a steel,cover.
A friend had one, he used it for steel storage. Installed racks on the side that held the steel tubing
A friend had one, he used it for steel storage. Installed racks on the side that held the steel tubing
turbowoodworker
Well-known member
You can decrease the volume of concrete required by using mother-in-law, Jimmy Hoffa, etc.
Hpozzuoli
Well-known member
I wish I could find what computer the pics are on. Last year I had a customer with a pit in a garage that abutted the basement. Huge garage so instead of filling pit with cement I cut the back wall that separated the pit and basement and thru a set of stairs in it. We created a garage entrance to the basement via the pit.
That pit is a free fallout shelter, storm shelter, or root cellar. Don’t be in a rush to fill it.
That pit is a free fallout shelter, storm shelter, or root cellar. Don’t be in a rush to fill it.
How big is the pit ?
If you plan on ordering a load of concrete to top it off, you need to find out what their minimum load is. If the min load is 3 yards, you might as well get your money's worth and fill the majority of it with concrete.
If you plan on ordering a load of concrete to top it off, you need to find out what their minimum load is. If the min load is 3 yards, you might as well get your money's worth and fill the majority of it with concrete.
RVDan
Well-known member
You could just trade it with somebody who wants a pit and doesn't have one.
D45
Well-known member
Great idea......just cover it with a thick steel plate
Empty Pockets
Well-known member
While the pit may be a little unsightly, they can come in handy. I would just get/make a cover. That would much cheaper than a lift and less likely to fail.
Jon_E
Well-known member
I would just put bars and a trapdoor on it and use it for prisoners.
PelicanPines
ALLIANCE MEMBER
Nothing more valuable than a hole when you need one. Cover it and be satisfied with the knowledge... There's a quick place you can store something.
6768rogues
Banned
Fill it with bank run gravel or #1 crusher run in 6" lifts, compacting it between lifts.
Or fill it with flowable fill from a concrete supplier. It is a low cost cementitious material with fly ash that gets hard and does not settle but is excavatable.
Then top with concrete.
Or fill it with flowable fill from a concrete supplier. It is a low cost cementitious material with fly ash that gets hard and does not settle but is excavatable.
Then top with concrete.
Me! Me! Please deliver it to Holt, Florida! Thanks a bunch!
It'll probably just fill with swamp water and then a croc will get you
casmurbax
Well-known member
For future people in a situation like this, you should use flowable fill, it is much better and gets you very close to 100% compaction without any manual compaction. The local concrete company would deliver it and pour it in. It fills voids nicely and when it is hard, you can still dig it with a shovel. It is essentially sand with a bit of cement.
In your current situation, you could dig down a ways, add water as they said and then compact it as best you can in 4" lifts. Most likely 4" will be fine with voids under it, but that hollow sound would drive me crazy. As Tink said, you could always pump grout in through holes when (or if) it gets a void under it. I would drill them afterwards instead of leaving access holes. Just make a designated area that you know there won't be rebar to hit with the drill.
The above was from another thread.
or perhaps you could do this instead?
Last edited:
yhprum
Well-known member
make into small swimming pool for the garage
rburke65
Well-known member
Fill it with sand and cap it with concrete.