Displaying stairs in plan properly

[Anonymous]

I'm really new to this and need help in getting Archicad to display the plan view properly on a stair meeting a sloping wall. I've attached a simple demo of what I mean. HELP!

Archicad 12AUS, XP

[Anonymous]

SEO the stair with the wall. Then save the stair as LibPart. Remove the old stair.

[Anonymous]

Couldn't resist - I run into this problem all the time!

Kliment, I agree with your technique, with the following exception...

No need to save the stair separately. Just make the stair wide enough to reach across the stair well's widest point, do the solid element operation and leave it as-is. Just sayin'.

I haven't encountered this particular situation in AC12 yet. On AC9, I'd actually make a slab to use as the cut body, do the SEO, then place the slab on a 'scratch' layer I keep turned off (unless I need to see it for revision). That way, if the skewed wall moves, I can just edit the slab I used and it's up-to-date without any saving or reloading of library parts. This was necessary, of course, because in AC9 I couldn't SEO 'beyond' the back side of the wall. I know they've changed this vertically in AC12 (which is REALLY cool!! used it today!), but not sure if it works 'laterally' (didn't notice / try.. will have to look and see).

My two cents.

[Anonymous]

Dag nabbit....

Just noticed in the picture the wall is CANTED. Okay... Use a mesh instead of slab as the cut body. Then the wall's sloped face can be duplicated.

Doh!

That's going to look spacey in real-world... I love it.

[Laszlo Nagy]

No matter how you cut the Wall with the Stair in 3D, you will still have to use Lines/Fills to achieve the 2D look of the Stair you are after.
In 2D, SEOs unfortunately to not propagate themselves to the look of the affected elements.

[Anonymous]

Thanks Laszlo...I thought I was going mad!
Funny, I tried replacing the treads with slabs and had the same problem in plan view.It must be an issue with sloped elements?

[Laszlo Nagy]

It is rather an issue with Solid Element Operations: they have no effect on the 2D of the elements involved so you have to make any resulting changes to the 2D manually.

[Richard Morrison]

I haven't tried it yet, but I wonder if the "Show Intersections in 3D" off of the Special Menu might help?

[Laszlo Nagy]

Richard wrote:
I haven't tried it yet, but I wonder if the "Show Intersections in 3D" off of the Special Menu might help?

I think that is a different thing, which affects only the 3D Window.
It will show the intersection lines between two intersecting bodies (like we used to construct them in descriptive geometry class in college). But only in 3D, not in 2D.

[Erika Epstein]

Use the old Trim to Roof method.
Create a roof to match the slope of the wall. Use trim to roof and TRIM BASE.

When you are done trimming the stairs, you can delete the roof used to trim and the trim holds. The other advantage is that the trimmed stairs will show correctly in 2D and 3D