Choose your top Archicad wishes!

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

Stair Tool - Alternating Tread

Fez1974
Contributor

Screenshot 2022-04-07 224148.jpgHi,

I've recently upgraded from v.20 to v25 so just about got my head around kitchen cabinets but I'm struggling with staircases. The project requires an 'Alternating Tread' stair (space saver for accessing loft conversions before anyone asks).

I've been able to do the tread profile but what it needs to do to work is the treads need to overlap each other. I have tried adjusting the nosing but this has no effect.

Hopefully my image will make everything clear - but ultimately the staircase will need to be a lot steeper.

Thanks,

Freelance architectural technician from Staffordshire, UK.

32 years experience

Archicad (v11-25).

Windows 11 on 32gb 11th Gen Intel(R) Core(TM) i7-11700K @ 3.60GHz
Nvidia RTX A4000
3 REPLIES 3
Fez1974
Contributor

Screenshot 2022-04-07 230809.jpg

Ideally what I'm after tread-wise.

Freelance architectural technician from Staffordshire, UK.

32 years experience

Archicad (v11-25).

Windows 11 on 32gb 11th Gen Intel(R) Core(TM) i7-11700K @ 3.60GHz
Nvidia RTX A4000
Fez1974
Contributor

For anyone else requiring this type of stair:

https://www.designingbuildings.co.uk/wiki/Alternating_tread_stair

 

I stumbled aross a solution / work around. I didn't realise that when you save a "tread type" from a slab drawn on the floor plan it also records the height above 0 so if you save both left hand tread and right hand tread set at the correct riser spacing it achieves what you need. Draw back is the tread numbering is out but it is minor work adding these manually to the plan afterwards.

Another option is to model 2 staircases with the 2nd having everything turned off except the 2nd tread but welcome to hear any other solutions though. 

 

 

Screenshot 2022-04-08 095618.jpg.

 

 

Freelance architectural technician from Staffordshire, UK.

32 years experience

Archicad (v11-25).

Windows 11 on 32gb 11th Gen Intel(R) Core(TM) i7-11700K @ 3.60GHz
Nvidia RTX A4000

Cool, thanks for the help. Just needed recently