How To Determine Height and Depth of Foundation Wall?

[HumbleChief]

That sounds pretty good Geno.

You have to make sure you build your foundation for the main house BEFORE you add the slab, correct? Or else you'll get a continuous slab around the existing as well as the new addition?

And are you saying you place (for instance) a 12" deep slab under the room addition, add dashed lines to show the interior footing perimeter, then modify it in a section view to show the footing as being deeper than the slab?

[geno742]

That sounds pretty good Geno.

You have to make sure you build your foundation for the main house BEFORE you add the slab, correct? Or else you'll get a continuous slab around the existing as well as the new addition?

And are you saying you place (for instance) a 12" deep slab under the room addition, add dashed lines to show the interior footing perimeter, then modify it in a section view to show the footing as being deeper than the slab?

For the foundation plan view that will be sent to the layout, show the dashed lines indicating the width of the footing below. I'm assuming this is also a mono-pour like the existing house foundation. I wouldn't mess with the slab. Just make the depth look right for the addition elevations. The section is a separate cad drawing showing the mono-pour foundation as it should look.

I'm just getting the stuff on the con docs to look like they should, not worrying about the model.

I think is is faster to draw a cad detail for the section instead of messing around with the inaccurate section from the Chief generated slab foundation.

For me, it's all about the construction documents

This may be blasphemy here on the Chief site... not caring about the model.

[Glenn Woodward]

Larry,

If you name your new addition a Garage and then build the foundation with a mono slab, you will get a separate slab for the addition.

[HumbleChief]

Larry,

If you name your new addition a Garage and then build the foundation with a mono slab, you will get a separate slab for the addition.

Yeah but ti never looks correct in plan view, or at least I can never get it to look right.

Here's what I get - Post #2 in thread below.

http://www.chieftalk.com/showthread.php?t=48625

[HumbleChief]

For me, it's all about the construction documents

I always go back there too Geno but I'm giving it **** (and wasting an amazing amounts of time) trying to get the model right. I usually give up, view to CAD and get on with things. But if the model can be created quickly and accurately then everything can go really smoothly from there.