concrete form sizes?

Old 08-03-12, 05:27 PM
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concrete form sizes?

Ok, I am not a contractor but I am designing my own house and acting as my own general contractor.

I just got my permit and the framer laughed at me. I made the rooms even dimensions ... which makes the concrete wall below odd dimensions.

He said design it to the whole foot ... hmmmmm .... how when you have an 8" wall?

I know (or was told) standard concrete wall form sections come in 24" width.

Assuming an 8" wall, is there a 16" section to put in the outter wall so the inner dimensions can be to a whole ft or an 8" section to put on the inner wall or ???

Also, how big are corner forms. Just looking off pictures, if the inner forms extend say 12" (guessing) from the corner then do the outer ones extend say 20" so they meet?

I just want to make is simple for the concrete contractor.

Thanks .... Mike
Old 08-04-12, 04:49 AM
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You are getting ready to make the largest investment in your lifetime. You do not want to do it wrong. Even sized rooms are unheard of. They are defaulted by the depth of your wall and external framing. Your room may be 7'2", but it is what it is. Figure your outside walls in even increments to 24". Your concrete contractor will be happy and the framers don't care.
Now, with that said, everything from the evenly measured foundation walls will be adjusted, including framing, rafters, roof overhang.
Advice is free and worth every penny of it. Mine is to do your design, but pay an architect to do your final drawings, making sensible corrections as necessary. They know all the pitfalls and can think in all three dimensions. You will have a tendency to look in only two.

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