Foundation issues


winterdd
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Hey Guys, Is there a tutorial on building a stem wall foundation and also having a mono slab on other parts of the home? I haven't fully mastered this over the years yet. I check the spaces of the home I need raised to "walls with footings" and the right wing of the house as "mono slab" because all those spaces are on grade. It never fails that this creates a huge issues. The garage can be marked as mono but it wants to build a stem wall. So then I have to go label it as bonus room and it builds as mono. I just cannot wrap my head around these type of fdns. Any suggestions greatly appreciated. See below as an example..........

 

image.thumb.png.0b18a0715dfabd67296d3cf9f43ee7ef.png

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I was able to get it pretty close to what I think you're after by tuning off auto foundation after it generates the foundation initially. Then go in and change the wall settings and floor/stemwall elevations until you get it how you want. Another key is making sure the slab pour #'s are different between the foundation section's rooms & walls. For example I have the walls & room in the stemwall section of the foundation as slab pour #1, and the mono garage room & walls set to slab pour #2.

Pictures below with my settings, hope this helps.

 

Foundation plan view

image.thumb.png.e5c40dfdadcf154cb9f2ee519f6c0dd3.png

 

Cross section

2025-12-16_13-09-50.thumb.PNG.940902600f3ce5a5da25237d96c95008.PNG

 

Mono foundation room settings at floor 0

image.thumb.png.2fdb9e9153909d9aa12602b0ad627546.png

 

Mono slab wall settings

image.thumb.png.49b99a10993316199b302024b906874e.png

 

Stemwall foundation room settings at floor 0

image.thumb.png.f74f6993bcf19a219ff69b654bc009ae.png

 

Stemwalls settings

 

image.thumb.png.a5fbc8eb92309fc308e96a8d16d5c8ff.png

 

Edited by tundra_dweller
Removed duplicate pic & added correct one.
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2 hours ago, tundra_dweller said:

I was able to get it pretty close to what I think you're after by tuning off auto foundation after it generates the foundation initially. Then go in and change the wall settings and floor/stemwall elevations until you get it how you want. Another key is making sure the slab pour #'s are different between the foundation section's rooms & walls. For example I have the walls & room in the stemwall section of the foundation as slab pour #1, and the mono garage room & walls set to slab pour #2.

Pictures below with my settings, hope this helps.

 

Foundation plan view

image.thumb.png.e5c40dfdadcf154cb9f2ee519f6c0dd3.png

 

Cross section

2025-12-16_13-09-50.thumb.PNG.940902600f3ce5a5da25237d96c95008.PNG

 

Mono foundation room settings at floor 0

image.thumb.png.2fdb9e9153909d9aa12602b0ad627546.png

 

Mono slab wall settings

image.thumb.png.49b99a10993316199b302024b906874e.png

 

Stemwall foundation room settings at floor 0

image.thumb.png.f74f6993bcf19a219ff69b654bc009ae.png

 

Stemwalls settings

 

image.thumb.png.a5fbc8eb92309fc308e96a8d16d5c8ff.png

 

 

Thanks tundra! I will look into this now.

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