08:20AM | 07/21/05
Member Since: 07/20/05
2 lifetime posts
I'm planning on building an approximately 1800 sq. ft. octagonal home.

I plan to use a rabble trench footing (drain pipe at bottom and 1&1/2 gravel to grade level) with a 24" wide x 6" high concrete beam on grade to support the concrete blocks which will be dry stacked and surface bonded.

I also plan a 3&1/2" concrete slab over 2+" of foam insulation.

My problem is that I can't visualize the height of the slab or the edge of the slab in relation to the concrete beam footer.

Should the top of the slab be above the top of the footer or at the same height?

Should there be an insulated gap between the slab and the footer?

Or should the slab and footer be all one pour, and if so what rain on the outside edge of the footer; will it try to find a path to seep through the blocks onto the pad?



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