how to create a edge profile for slab on ground as attched

[didi]

I use slab command only can create a rectangle slab, don't know how to create recessed slab edge like below. 

[NateLumen · Accepted solution]

Hi Didi,

This seems like a tricky thing to do with slabs.

1) One thing I could think of if you're wed to slabs is to make the slab thickness be the thickness of the thickest part and then create elements (maybe complex profile walls) to subtract from the slab using solid element operations.

2) Another option would be to make the slab the actual slab thickness, then build the lower sections separately, either as slabs or walls.

3) I'm guessing this is the profile that goes around the perimeter of the building. You could try and make a complex profile wall that has this profile and build it around the perimeter. To help it clean up with itself, you could make it so the part where it returns to just a slab has a "stretchable" width.

Probably some other ways too, but these are what came to mind.

[Erwin Edel · Accepted solution]

Slab for the top, complex profile beam for the bottom:

[Barry Kelly]

As Erwin said - complex profiles beams or walls.

I have my footings built into the complex profile walls.

They even have modifiers so everything can be stretched (the blue lines in image).

All I have to do is add my slab.

Barry.

[didi]

much appreciated Erwin your solution, I try to do it 

[didi]

hi Natelumen,

thank you your sulotion also explain it quite details, i will try to make it. 

[Erwin Edel]

I need to have a different classification for the footing, so sadly can't model it as one big profile.

[Barry Kelly]

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@Erwin Edel wrote:

I need to have a different classification for the footing, so sadly can't model it as one big profile.

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I never really thought of that.

You can still schedule the the individual parts (fills) of the profile, but you can't give them separate classifications.

So yes you would need a separate footing profile if classifications are important to you.

Barry.

[Erwin Edel]

Sadly the BIM standards in Netherlands often lead to 'dumbing down' the model in terms of ArchiCAD 'quality of life' options.

Being able to classify on skin level or for all the bells and whistles from windows/doors would help a lot.