problem setting posts for an above ground pool deck

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Old 05-25-14, 08:23 AM
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problem setting posts for an above ground pool deck

I live in upstate NY. About 10 years ago I put up a pool deck.
Where my deck is, it is wet in winter/spring. I had dug holes 3ft down, poured concrete then used connectors and attached the posts on top of these piers, then built my deck. (I DID NOT USE the circular cardboard forms)
After about 2 years the piers started to heave out of the ground.

Finally this spring they were so bad, some were almost 2 feet out, and the deck was starting to push on the pool, so I tore the deck
down, tore out the piers and am rebuilding.

I've dug 12 new holes as far down as I can get (again 30-36 inches, with a couple approaching 4 feet and am trying to decide what to do.
a couple of the holes are in a very wet area.

I'm afraid to put concrete in again because I fear that even if I did use forms, the piers will heave and I never want to dig out those cement piers again, ever . I'm considering just setting the 4x4 posts in the ground.

I'm not so much concerned about rot of the posts, as I am the posts shifting and I end up again with my deck pushing on my pool.

Any suggestions?

Can I safely set the 4x4 in the ground and not worry about them shifting on me?
 
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Old 05-25-14, 09:18 AM
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It is the moisture in the soil freezing that is causing the columns to heave. Work some drainage into your plan that dries out the area.
 
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