topic Re: Overlaping object in Libraries & objects

Overlaping object

Anonymous — Wed, 06 Aug 2025 15:10:50 GMT

I d have a tricky question.
If you draw two identical objects, slabs, beam,..., does archicad understand that it is only one and discard the second object?

If that so, when you are adding two elementos that shares an edge, why do you have to erase the added element, i.e. for creating one big slab by adding two slabs adjoined slabs.

Re: Overlaping object

Erwin Edel — Fri, 19 Jan 2018 10:09:59 GMT

Similar building materials of slabs touching eachother will merge in sections, same goes for walls, roofs, etc. Some elements interact with other elements too, like collumns and walls, walls and slabs etc there is a list in your help documentation somewhere.

For objects it works a little different, here it is about what section fill is used in the script.

If elements are on different layers with different intersection group numbers, the fills will not merge.

That said, unless, for example, a slab has a different thickness or is part of a repeating hotlinked module, I would draw it as one slab, as you will also see the extra edges in 2D plan.

Re: Overlaping object

Barry Kelly — Mon, 22 Jan 2018 01:09:17 GMT

darwinland wrote:
I d have a tricky question.
If you draw two identical objects, slabs, beam,..., does archicad understand that it is only one and discard the second object?

No, both elements will remain.
Sometimes you won't notice and other times you may have trouble with connected elements.
There is an add-on (goodie) that you can download and install that can be used to check for duplicate elements.
Go to HELP menu > Archicad Downloads if you don't have it already.
Click on the "Add-ons' link and download the 'Goodies'.

darwinland wrote:
If that so, when you are adding two elementos that shares an edge, why do you have to erase the added element, i.e. for creating one big slab by adding two slabs adjoined slabs.

If you mean adding one slab to another with the pet palette command then you are not actually merging the slabs.
You are just adding the area of one slab to the other, but it could just as easily be the additional area of a fill, or walls, or roof, etc.
It is just an area you are adding.
That is why you still need to manually delete the slab you are adding.

Barry.

Re: Overlaping object

Anonymous — Mon, 22 Jan 2018 07:31:21 GMT

Barry wrote:
darwinland wrote:
I d have a tricky question.
If you draw two identical objects, slabs, beam,..., does archicad understand that it is only one and discard the second object?
No, both elements will remain.
Sometimes you won't notice and other times you may have trouble with connected elements.
There is an add-on (goodie) that you can download and install that can be used to check for duplicate elements.
Go to HELP menu > Archicad Downloads if you don't have it already.
Click on the "Add-ons' link and download the 'Goodies'.

darwinland wrote:
If that so, when you are adding two elementos that shares an edge, why do you have to erase the added element, i.e. for creating one big slab by adding two slabs adjoined slabs.
If you mean adding one slab to another with the pet palette command then you are not actually merging the slabs.
You are just adding the area of one slab to the other, but it could just as easily be the additional area of a fill, or walls, or roof, etc.
It is just an area you are adding.
That is why you still need to manually delete the slab you are adding.

Thx, and to merge the slabs then...

Barry.

Re: Overlaping object

Barry Kelly — Mon, 22 Jan 2018 07:42:12 GMT

Unfortunately you can't merge slabs together.
All you can do is add the area to one of the slabs and then delete the slab you just used for the extra area.

Barry.