A neebie on building an inground concrete pool

[Universal Foam]

I am about to start to plan my in-ground concrete pool, I am contracting it out to a company to help me but I want to know how to do most of this myself so I can make sure things are going correctly. What is a good void filler for underneath my concrete portion? Or does the concrete just go right on top of the soil? Help!

[PoolDoc]

Sorry, not something I can really help with . . .

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