Bricks, Masonry, Asphalt and Concrete - Monolythic or Multiple Pours for Slab on Grade

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CougGuy
10-24-06, 10:31 AM
Pouring a slab on grade foundation for a new addition. Here's the diminsions:
Footings: 12"wide x 8" high x 78' long
Stem Wall: 6"wide x 22"high x 78' long
Slab: 28'long x 25'wide x 4" high

City allows for two basic designs: One a monolythic pour and the other a two pour (one for the footings stem wall and one for the actual slab). The biggest difference seems to be the allowance of the two pour system to have a ridged insulating material on the inside of the stem wall. The single pour would undoubtedly be less expensive. Question is: Is the multiple pour method significantly better than the mono pour method?

Concretemasonry
10-24-06, 10:58 AM
Undoubtedly less expensive? Maybe just pennies. Might even be more since you will lose the second use of the inside forms.

The single floor will give you a colder floor. You did not say where you live, but the extra heat would count up.

What does a contractor say about the price difference - he knows the costs.

Dick