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Basement is all slab except for one 5'x10' corner where bathroom is, bath had been built up about 6" higher to hide plumbing. Problem is they had used 2x4 on edge in dirt to frame it. Naturally all sorts of rot occurred so we ripped it all out.

So now we're thinking pour a new slab in there, unless I can figure a way to frame it. Problem I see with pouring a new slab is the forms will be right up against the walls.(almost) What would I do than? Leave them in?? Take them out after pouring and fill in perimeter gap with concrete?

Or could I set the forms in about 6" from the walls (make it easier to screed off of), pour both sides of forms and than just leave them in place?

We plan on putting down a ceramic tile floor on top.

Any help is appreciated, I'll be back tonight to reply.
 

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Curmudgeon
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Basement is all slab except for one 5'x10' corner where bathroom is, bath had been built up about 6" higher to hide plumbing. Problem is they had used 2x4 on edge in dirt to frame it. Naturally all sorts of rot occurred so we ripped it all out.

So now we're thinking pour a new slab in there, unless I can figure a way to frame it. Problem I see with pouring a new slab is the forms will be right up against the walls.(almost) What would I do than? Leave them in?? Take them out after pouring and fill in perimeter gap with concrete?

Or could I set the forms in about 6" from the walls (make it easier to screed off of), pour both sides of forms and than just leave them in place?

We plan on putting down a ceramic tile floor on top.

Any help is appreciated, I'll be back tonight to reply.
Snap a line on the wall, and
pour to that.
The wall is the form.
You would lead one to believe
that you are very new to all of this.
Is this your house?
Did you get a plumber to straighten out
that mess?
 

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you dont need a form next to the wall. If its critical you can use 2-3 stakes set at finished grade and pull them when yer done with rough placement.

what neo said!
 

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I'm not very good with a line on the wall. I would put a 1x2 on stakes a foot or so from the wall. Drive the stakes so that you can remove them easily, yet they should be firm because this is what you will screed off. When you're done screeding, walk out in the concrete and pull the 1x2 with the stakes still attached. Then float and hopefully your holes will fill back in.

If you want to avoid walking in it, then tack a 2x4 to the wall first and put a plank on it to walk out on and grab the 1x2 and stakes.
 

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Snap a line on the wall then nail expansion board to the wall at your chalk line. Use the expansion board to help screed.
 
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