Howdy folks,
City finally issued my zoning permit (no building permit required for <200SF) for my 12x16 modern manshed. I'm renting a fancy post hole digger tomorrow and wondering which size auger to use for 8" tubes. The shed will sit on two beams with four piers under each beam. I plan to pour about 4 inches of concrete at the bottom of each 2 feet deep hole and sink a vertical piece of rebar at that time that will go up the center of the tube. When that dries, I will put the tubes in, backfill around them, and fill them with concrete. I was thinking of using the 12" auger and maybe reaching down with a garden trowel and enlarging the bottom diameter of each hole a little.
Think that will work? I kind of want to avoid using the 18" auger (the next biggest size) and minimize the dirt work.
Thanks
What kind of soil, where is it, and what's the frost depth?
Frost depth not very deep here. I believe the city requires footings to be 18" below grade on regular construction. Soil is usually a sort of loamy clay without much rock.
Thanks
The question really is what size of footing is required to support the anticipated loads; building weight plus contents and wind forces that might be transferred through to the foundation.
I don't have a 'for certain' answer for that. Here, our building department usually specifies 16x16" poured concrete pads 8 inches thick, with reinforcing steel. That may be a size that is fail safe for our conditions and hence prescribed whether or not it's overkill or not. ???