In the pic. Blue is the wall, grey concrete footing, brown dolomite gravel, circles where rebar goes parallel to the wall. What size of dolomite gravel would you pick 8/16 or 16/40? There will be water barrier between gravel and footing and footing dirt.
The stable is built on a slope, so one side gets covered with dirt much higher. Blue line represents footings height
This side gets buried a lot deeper, every gap above blue line will be filled with concrete then water barrier, and then dirt. Oh, and what diameter rebar would you go with?
>>2950365I just underpinned an old house on a project I'm working on now. The new foundation went 6 inches underneath the existing foundation and then 2ft down. We used 1/2 dowels to go into the existing foundation And the rest of the rebar was 5/8. It looked pretty similar to your drawing. What size rebar you use will depend on what kind of soil and seismic activity there is in your area.
