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Fence post deepness??

1K views 1 reply 2 participants last post by  High Gear 
#1 ·
I am building a 6' wooden fence in michigan.I went and bought 4x4x8 treated post.I was planning on digging 28" to 30" holes ,but majority of people i've talked to say that i have to go 4' cause of the frost line,or i risk having the fence get pushed up because of it.

So now i have a dilemma ,either taking a chance with what i am doing ,or returning 40 post to get longer ones.Has anyone build one with those specs and had success with it?
 
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