Is there a minimum size for a post and beam floor concrete pier?
In a basement I have a 4×4 post holding beam under 2×6 floor, about 16 sq ft total (1/2 of area). This post rests on a concrete floor of unknown thickness perhaps 50 years old. I would like to break up the concrete floor and pour a concrete base for an Simpson post base. Whats a typical size for this post base?