Eric:
I'll give you the example of my unfortunate experience. My goal was an absolute
flat floor. I had no heating considerations (lack of foresight!). I
encountered
a significant problem with preparation of the base. I tamped before bringing in
stone, after the stone, and in spite of all that, my slab dropped about 4 inches
toward the back of the garage. It took about a year to settle, but it did.
One thing I noticed that helped to settle the tamping was when I poured lots of
water into the base material. It seemed to help fill the underground voids. I
just didn't' do enough of this, and it was only effective when I used lots of
water. The garden hose wouldn't flood it enough; I happened to use the water
from my swimming pool startup/backwash. That's lots of gallons fast. An
equivalent, I think, would be heavy thunderstorms or a soaking rain. Or, really
large compacting equipment. The vibrating walk behind just didn't do it.
Eric Petrevich wrote:
> OK, The new shop is ready for the floor to be poured. I need some advice
> from you guys.
>
> Right now, the floor is a pretty well compressed (not tamped yet however)
> QP bed. It's about 4" lower than that bottom of the slab (I marked a
> bunch of spots with a transit.)
> I know I need to bring in more stone and a tamper, my questions are as
> follows...
>
> 7-Did I miss anything?
>
> Thanks a ton!
>
> Inch
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