Libraries & objects
About Archicad and BIMcloud libraries, their management and migration, objects and other library parts, etc.

STACKING STAIR???

Jeff Galbraith
Advocate
Is it possible to build a single stair object that stacks on top of itself? I've been able to build 'U' shaped stairs that have only 2 flights and one intermediate landing. I can also build stairs with 3 (or more) flights as long as none of the flights is directly above another flight. However, the second I adjust the blue layout line in plan to circle back on top of itself archicad won't let me do it.

How then are we supposed to make stairs with 3 stacking flights? Please don't say we have to break them up into separate stair objects...

Jeff
Archicad 22, Macbook Pro, macOS 10.13.6
Jeff G

Archicad 27 USA (full), Macbook Pro (16-inch 2023, M3 MAX, 128 GB RAM)
4 REPLIES 4
How will this stairway be realized on the construction site ?
By my home the concrete stairs are prefabricated floor by floor.
So you had to do your own GDL object to do this but...

One french guy began this job* : https://bit.ly/2RV1qMY
Perfection is not of this world, not even at Archicad

*These two objects do not seem constrained by a commercial right
Christophe - FRANCE
Archicad Designer and Teacher
Archicad 15 to 27 FRA FULL

OS 13 Ventura - MacBook Pro M2 max- 32Go RAM
"Quality is never an accident ; it's always the result of an intelligent effort" John Ruskin
Lingwisyer
Guru
It is a limitation of the Stair Tool. There are quite a few threads about this. Please use the search function before creating a new thread.



Ling.

AC22-23 AUS 7000Help Those Help You - Add a Signature
Self-taught, bend it till it breaksCreating a Thread
Win11 | i9 10850K | 64GB | RX6600 Win10 | R5 2600 | 16GB | GTX1660
Barry Kelly
Moderator
Yes you will have to stack separate stairs on top of each other.
You can control all of the end connections so they join correctly.
The hardest part is working out the required riser height.
To do this I just place a dummy straight stair that travels the overall height that you want, then use that riser height in the ones that you will piece together.

Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11
Erwin Edel
Rockstar
I've created a spiral stair with custom treads that replace the standard treads. This has caused part of the top of the stair (a custom landing) to overlap the bottom tread. The resulting 2D symbol has lots of issues.

I would not recommend trying to make a stair that overlaps itself with one stair.
Erwin Edel, Project Lead, Leloup Architecten
www.leloup.nl

ArchiCAD 9-26NED FULL
Windows 10 Pro
Adobe Design Premium CS5