The Family Handyman on MSN9 个月
How to Pour Footings for a Solid, Frost-Proof Deck
then you have a bad case of “frost heave-osis.” Pouring footings doesn't require much outside of a few basic concrete skills.
the expansion recedes and downward movement will occur in footings that had experienced frost previously. This can result in cyclical movements each year with warming and cooling." Shallow ...