Never did find out, do we need or NOT need patio blocks under uprights of an oval buttress free in the north where it is subject to freeze and frost heaves with winter/spring? We have severe winters here, sometimes the ground is saturated in our area so there are some issues with frost movement in the ground.

We were told when purchasing that we needed 12x12x1" blocks under each upright so we bought 22 of them and they sit stacked and waiting for our installation in the coming weeks. If putting blocks under the uprights/patio base plates (pool claims to have "oversized" patio base plates) will cause the wall to buckle in the spring with frost changes, I want to bring them back while I can. Any advise please????