Minimum foundation wall height?

[SDS]

2018 IRC

Is there a minimum concrete foundation wall height when using a 2-pour footing and stemwall?

If I've got a 12 inch frost depth to bottom of footing, and the footing is 6 inches tall.
And I've got to have 6 inches clearance from finished grade to top of stemwall
That makes a 12 inch tall stemwall.

With a slab-on-grade floor, flush with the top of the stemwall.

I can't find anything that mentions a minimum height, only maximums.

The only issue I can find is that R4031.3.1 states the required vertical rebar on a 2-pour foundation has to extend at least 14 inches into the stemwall. Add a couple inches so its not sticking out the top and spalling and you're looking at a 16 inch minimum height. It seems to be the only thing that is dictating a minimum height in the IRC

What am I missing?

 

[mtlogcabin]

Sounds like a lot of work. Why not just pour a Mono Slab?

 

[SDS]

Sounds like a lot of work. Why not just pour a Mono Slab?

The energy options I'm taking require insulation under the entire slab, not just the perimeter.

 

[bill1952]

The mono slab doesn't prevent that.

I don't believe there is a minimum stem wall height - just minimum footing and minimum clear of wood etc from soil.

And personally, I think that 6" is a code minimum and not good design. I'd prefer a foot.

 

[SCBO1]

I would agree that 12-inches is better it allows for the sheeting and exterior siding to be at a height that allows for a future concrete patio pour against the foundation stem wall or (rat race wall). In the midwest we would get a few snows that would settle next to the siding, this extra height helps. We poured it the same width as a poured foundation wall and blocked out for patio doors or walkout door.