Bricks, Masonry, Asphalt and Concrete - pouring a basement floor....need help

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STUB
08-08-03, 07:14 AM
DIY'ers,

Building my brothers house and we are getting ready to pour the basement in the next couple of weeks. Just wondering if anyone had any tips/advice to make things easier. We have poured a few slabs before, but nothing this big and nothing that had walls butting up to it. Some immediate questions I can think of are...

How/which is the best way to slope the concrete to the sump pit? How much of a slope?

How can you actually keep the concrete at the slope you desire without running string?

The floor we are pouring will be about 70' long by 35' wide. ALso, I came across info that said to put some visquine(sp?) between the gravel and the concrete. I've never heard this before, what should we do?? Thank you,

Ron

Frank99
08-18-03, 08:47 PM
You can go with 1/4 " per foot pitch, mark the block walls with the slope you want to follow. measure at each end the snap a chalk line and then mark it two inches above that line so it will be easier to see later on when the concrete starts flowing in.
Visquine is a vapor barrior (plastic) 6mils is the standard