your thoughts on foundation footing for old - /diy/ - Xchan
your thoughts on foundation footing for old
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Anonymous10/12/25, 11:20No.2950365Your thoughts on foundation footing for old stable?
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.
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Anon10/12/25, 11:32No.2950366
The stable is built on a slope, so one side gets covered with dirt much higher. Blue line represents footings height
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Anon10/12/25, 11:34No.2950367
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?
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Anon10/12/25, 13:24No.2950373
I 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.