topic Re: Extend composite external wall skin down & cut slab edge in Modeling

Extend composite external wall skin down & cut slab edge

mthd — Fri, 08 Dec 2023 07:22:12 GMT

Hi, After many attempts of trying to use the complex profiler with a modifier to extend my external brick skin down bellow the finished floor level of a slab. I would like to know if it can be done without modifiers, using a similar method as is shown in this official training video posted below ?

https://youtu.be/3ttIpDmQVLw?si=zIzs09O6Tj9zJG4z

Can I just capture my wall profile and then offset the external brick skin down to the desired depth and then apply it to all ?

Edit: I tested it and it did work for me as an offset modifier this time. I think I was using the wrong type of modifier in all my other attempts.

I still need to figure out how to cut a rectangular rebate in the edge of the slab in 3D ? It can be done with the CI Slab Edge Tool but I wonder how to do it with SEO’s if that is possible ?

Slab edge can only be splayed at this stage or can we cut a rectangle out on the edge as well ?

Re: Extend composite external wall skin down & cut slab edge

Barry Kelly — Fri, 08 Dec 2023 08:02:12 GMT

You don't need a modifier to stretch a skin.

You can just edit ti complex profile.

Adding the modifier just allows you to adjust the height (width) for individual walls that you place.

But if they are all going to be the same, no need for the modifier.

The only reason to 'capture' a wall profile is if you want to create a new complex profile based on standard composites.

If you already have a complex profile, just edit and save it.

All placed instances will update.

No you can't cut a rectangular notch from the edge of your slab without using SEO.

But there may be no need.

If it is a notch to recess the brickwork in, then so long as the brickwork has a stronger building material than that used in the slab, it will automaticall trim the slab away.

I actually include the footing and slab thickening in my wall profiles.

Barry.

Re: Extend composite external wall skin down & cut slab edge

mthd — Fri, 08 Dec 2023 10:38:51 GMT

Your 3D diagram is like gold, I see what I need to do now. Yes my extended brick wall does cut the slab.

Your footing is a complex concrete beam profile ?

Thanks again Barry.

Re: Extend composite external wall skin down & cut slab edge

Barry Kelly — Sat, 09 Dec 2023 02:41:12 GMT

@mthd wrote:

Your footing is a complex concrete beam profile ?

No, it is all part of the wall complex profile.

Has modifiers to adjust heights and widths of almost everything.

Barry.

Re: Extend composite external wall skin down & cut slab edge

mthd — Sat, 09 Dec 2023 02:52:50 GMT

Cool ! So I could just draw a footing profile beneath the wall profile with a gap for a slab to fit under the internal skin like you have done here. Keeping the material of the footing the same as the slab.

Nice depiction of a detail to help me draft my profile. I have seen some other methods in videos but yours is the best one so far. I will try it out.

Thank you for your help once again.

Re: Extend composite external wall skin down & cut slab edge

mthd — Wed, 13 Dec 2023 03:48:38 GMT

I tested it out and it worked fine with a couple of little problems that showed up.

1) You see the footing line on the plan so I changed my external walls to cut only.

2) On my external walls where the reference line is on the inside to line up with a corner internal wall intersection. When I apply the profile, the wall flips. Do I create another mirror image profile to apply to that type of external wall or is there another way around that hurdle ?

Re: Extend composite external wall skin down & cut slab edge

Barry Kelly — Wed, 13 Dec 2023 04:08:49 GMT

1). You can adjust the 'Show Projections' settings as well so you don't have to set a s cut only.

2). Why do you need the reference line on the inside?

Walls should trim OK if inside or out.

Barry.

Re: Extend composite external wall skin down & cut slab edge

mthd — Wed, 13 Dec 2023 04:29:28 GMT

Yes I will use the show projection settings instead.

Re: 2) Please see this post as to why.

https://community.graphisoft.com/t5/Documentation/PBC-Corner-Wall-Junction-to-clean-up/td-p/401775

Thanks.

Re: Extend composite external wall skin down & cut slab edge

Lingwisyer — Wed, 13 Dec 2023 05:02:21 GMT

Maybe create a Wish for being able to set the different Reference Line positions in Complex Profiles?

Re: Extend composite external wall skin down & cut slab edge

Barry Kelly — Wed, 13 Dec 2023 05:31:14 GMT

I see.

You can't flip the reference line of a composite wall like you can a composite wall.

But you can edit the offset position.

So offset it by the thickness of your wall.

Sorry, don't select and offset the internal wall as I have shown in my image.

I was just selecting them to show the reference line positions.

Barry.

Re: Extend composite external wall skin down & cut slab edge

Barry Kelly — Wed, 13 Dec 2023 06:11:54 GMT

The problem with complex profiles is, they can be any shape, not just vertical skins like a composite wall.

Can include footings, corbels, skirtings, eaves lining, etc.

So it would be hard to determine the inside/outside automatically.

Likewise any of the fills can be set as core, finish or other, so they may not be in any particular order.

So I think the offset is the best we will get for complex profiles.

Barry.

Re: Extend composite external wall skin down & cut slab edge

mthd — Wed, 13 Dec 2023 07:14:37 GMT

Yes coming from CA, walls will automatically heal up. In CA you don’t really need the same level of construction complexity as we do in AC. In AC we can 3D model many types of commercial buildings and old buildings that have complex profiles.

The Complex Profile tool is actually a “Complex Profile Extruder” CPE and those from other 3D modeling apps would understand the term “Extrusion” better than just “Complex Profiler”.

Regarding external moldings, many use the morph tool to extrude various shapes or profiles. So far I haven’t even gone past trying to model a parapet gable wall end with the morph tool. I have to figure out when it is appropriate to graduate from CPE to Morph modeling. The next horizon for me maybe ?

Brick ledges and footing profiles are largely automatic in CA and therefore you cannot modify them as much as you can with AC I found. This video below shows how we do it with CA.

https://www.chiefarchitect.com/videos/watch/320/brick-ledge-foundations.html?playlist=88