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Modeling
About Archicad's design tools, element connections, modeling concepts, etc.

Howto - spiral stair with center column?

Mats_Knutsson
Advisor
Like any Weland fire escape stair for example...
How do we do it with 21?
Cheers,
Mats

spiraltrappa-i-trapphus.png
AC 25 SWE Full

HP Zbook Fury 15,6 G8. 32 GB RAM. Nvidia RTX A3000.
3 REPLIES 3
Dontknow
Enthusiast
I once made a spiral stair out off morphs with a handrail (spiral) from the library.

Architectural construction designer, draftsman, modeller
ArchiCAD 25.
Barry Kelly
Moderator
I just watched an interesting video by Eric Bobrow the other day where he made a custom spiral staircase.

https://www.youtube.com/watch?v=IRttsLcWtD8

Using non-custom components will be a bit easier.
It really is as easy as getting the settings you want then placing a stair using one of the arc options in the pet palette.
A couple of clicks and I had this (no centre post - that is just a column).

Barry.
spiral_stair.jpg
One of the forum moderators.
Versions 6.5 to 27
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11
Barry Kelly
Moderator
I also just found this.

https://helpcenter.graphisoft.com/tips/archicad/modelling/stair-tool-basics-spiral-stair/

Barry.
One of the forum moderators.
Versions 6.5 to 27
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11
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