Deck footing heaving

Hi, I just recently purchased a home, and noticed that since the frost has thawed, one of my deck posts/footings has heaved up. I live in a very clay area that does not drain very well. I will be installing a french drain around my whole backyard and near the deck footings that go to a well and get pumped out. I just dug down next to the one bad footing and noticed that they are plenty deep. (I stopped digging at 50", frost averages 42 in my area) Is there something I could mix in with the clay next to the footing to help drainage? (IE pea gravel?) The whole way down was solid wet clay. I am hoping my french drain will alleviate the standing water issue, but since I already have a hole, should I add anything else?
Reply to
Anonymous

Site Timeline Threads

HomeOwnersHub website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.