So I am thinking about ordering the 3 point cement mixer from Everything Attachments to pour my footings/piers for this project and the many other projects to follow.
To support a container by the four corners and the eventual 40 foot wide roof structure, modest snow load, and weight of contents, how big do the footings need to be?
Right now, I am planning to dig a 30x30 hole with the backhoe for a footer that is 30” x 30” x 10” thick, and 36 deep at the bottom. Soil is 100% clay with no rocks at all and is virgin land. Is that big enough?
The hole will have 4” of compacted road base in the bottom. It will have a square rebar box to keep it as strong as possible.
Will 3 or 4 pieces of rebar be enough to connect the sono tube pier to the footing in 2 separate pours a day apart?
How much rebar needs to be in the sono tube?