When your slab and your footing is all done in a single pour, and the footing is basically a trench full of rebar. Not a concrete guy – is that what the term grade beam pertains to?
Real trucks dont have sparkplugs
When your slab and your footing is all done in a single pour, and the footing is basically a trench full of rebar. Not a concrete guy – is that what the term grade beam pertains to?
Real trucks dont have sparkplugs
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Replies
Sounds like a thickened edge monoslab...
I would call that a monolithic foundation (or footing).
Jeff
To answer the second part of your question, a grade beam is a component that acts by itself -- a beam that rests on grade (wherever that is, it may not be the surface). As opposed to a beam that is above grade, perhaps on posts.
Or in this case, as opposed to a component in a larger structure.
I'm not trying to be funny, there are actually a few important technical considerations here.
That beam is supporting something, and is supported somehow. Resting on grade as it is, it may be "simply" supported (i.e. at two points) which is highly unlikely, or it may be continuously supported, which has some pretty important considerations if the soil is unstable.
But typically in the monolithic structure you describe the thickened edge would not be called a grade beam. Usually just a thickened edge, or a "turndown."
It serves several functions; rigidity for the slab, a foundation for the wall (the rebar gives you your "D", and yes, in fact it is actually functioning as a beam), and as edge restraint against shear failures in the subgrade.
So the way that rebar ties into the slab is pretty important.
nope...
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Where I come from, a grade beam is a foundation wall resting on grade, but supported by concrete piles (instead of a footing). Seen whole homes on grade beams, but most often just the garage. This is with a 36" frost depth, I think the piles were close to 8' feet deep.
Cheers.
Cool. You all saved me from sounding stoopid tomorrow. Or at least for 5 minutes of it.Real trucks dont have sparkplugs
Monolithic slab
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