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Help with footings etc

2K views 1 reply 2 participants last post by  jason h 
#1 ·
Ok electrician needing some help with add on to house.
Background first:
Building a 26'x33' addition onto my house. Basically squaring off what I have. I am going to be pouring new 8" x 8'? sonotube concrete footings all around the outside, as I do not want to use the existing house to support the new addition. It will be attached of course, but I basically want a indepedant support for the addition.

I am using 2x10 for the floor. I will be putting 3/8 OSB, then 1 1/2 styrofoam to insulate floor then 3/4 T+G for the floor.

I am matching to the existing higher part of the house , which will end up giving me approx 10'6" high room. I am replacing the roof on the existing cottage style with new trusses.

OK, the quick questions. What is the spacing for the footings? Do I put them right on the outside beam edges? What should I have in the middle. I was told that I only require to be 10' apart, but I was wondering if this is adeqate.
Alright, those are them for now. I will have more for sure as this goes on.

Thanks
 
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