topic Re: creating a custom stair in Modeling

creating a custom stair

Anonymous — Thu, 25 May 2023 14:47:44 GMT

Hello.
I would like to create the following custom stair, but it doesn't work. The fill I drew has a polyline contour and a polyline is the line of travel also.
it says: Cannot create stair with current parameters.
What could I do?
Thank you.

Re: creating a custom stair

Anonymous — Thu, 23 Oct 2014 12:45:44 GMT

I redrew the fill and I believe it is ok. Now the issue apparently lies with the line of travel, because the message reads: Cannot generate stair with this line of travel.

Re: creating a custom stair

Barry Kelly — Fri, 24 Oct 2014 01:56:18 GMT

Try using lines and arcs only for the line of travel.
Don't use polylines or splines.

Barry.

Re: creating a custom stair

Anonymous — Fri, 24 Oct 2014 06:00:28 GMT

Thank you for the answer. I tried to draw the line of travel out of mutiple simple lines and also out of simple lines and arcs combined and still no result.
They should be connected somehow, the arcs and lines, but I don't know how. Also, how should the SUSPEND GROUPS option be active or not?

Re: creating a custom stair

Barry Kelly — Fri, 24 Oct 2014 06:55:57 GMT

I don't know that you will ever get this one to work.
I don't use this often but you will need a straight line for each step around your curve.
If the gap between the steps get to small then Archicad will not allow you to create it.
At least that is what I think is happening.

An arc will generate winding stairs but as your stair is not a true circle I don't know if you will be able to find a centre point for you arc(s) that will work.

Barry.

Re: creating a custom stair

Barry Kelly — Fri, 24 Oct 2014 07:11:26 GMT

This is as close as I can get without spending too much time on it.
But it still has a step missing on the left at the start of the curve.

Barry.

Re: creating a custom stair

Anonymous — Fri, 24 Oct 2014 07:58:47 GMT

Thank you for answering.
One last question: how did you draw the line of curve? Is it a group of one arch and 2 lines?

Re: creating a custom stair

Barry Kelly — Fri, 24 Oct 2014 08:08:36 GMT

No nothing is grouped but I don't think that matters.
So long as it is not a polyline.
Must be separate lines and curves.

Maybe start with a simple shape as I have shown and then stretch it into the shape you want.
Then you can see what breaks the stair creation and you may be able to work around it.

Worst case scenario make it in parts and then join them together.
Or create each step from a single slab positioned where you want it.
And then cut the shape of the stair with Solid Element Operations.

You could even convert it into a Morph and union all the steps together into one Morph.

Barry.

Re: creating a custom stair

Anonymous — Fri, 24 Oct 2014 11:46:42 GMT

All I could obtain is this. I believe I will build it step by step instead, as you suggested.

Re: creating a custom stair

Anonymous — Sun, 26 Oct 2014 23:51:01 GMT

Hello,

You must draw the circle from the right to the left...

DR

Re: creating a custom stair

Anonymous — Fri, 07 Nov 2014 13:01:25 GMT

I also have a problem with a custom staircase i m trying to create. Is there an easy way to draw this stair? Archicad 18 is not letting me create this.

Re: creating a custom stair

Anonymous — Sun, 01 Nov 2015 03:54:12 GMT

If you drew an outline from 'Lines' and then use the 'Fill' tool, make sure that you delete those original lines before you select everything to create your stair, otherwise ArchiCad will assume those other lines are part of your path of travel and the warning message will appear.

Re: creating a custom stair

Steve Jepson — Sun, 01 Nov 2015 22:11:16 GMT

...and of course when all else fails, go back to what you should have done the fist time and just model itwith Composites, Complex Profiles, etc...

Re: creating a custom stair

Anonymous — Mon, 02 Nov 2015 00:09:22 GMT

Steve wrote:
...and of course when all else fails, go back to what you should have done the fist time and just model itwith Composites, Complex Profiles, etc...

yep......I still find that is most often the best way...!!

Complex Profiles, in particular, are under rated and under utilised by many people.

Re: creating a custom stair

Erika Epstein — Mon, 02 Nov 2015 22:08:57 GMT

Gareth,
What error message did Archicad give you?
When I did a custom stair similar to yours, I got an error message which instructed me to adjust the nose depth after which I was able to create the stair.

Re: creating a custom stair

Anonymous — Tue, 03 Nov 2015 04:53:34 GMT

Erika wrote:
Gareth,
What error message did Archicad give you?
When I did a custom stair similar to yours, I got an error message which instructed me to adjust the nose depth after which I was able to create the stair.

This only happens if you were to leave any lines used as guidelines to place a fill afterwards....just need to remember to remove them.

However, I think maybe your post might be confusing me with someone else ?!

Re: creating a custom stair

Erika Epstein — Tue, 03 Nov 2015 14:28:44 GMT

No error, you posted a shot of a custom stair you said archicad couldn't make.

Re: creating a custom stair

Anonymous — Tue, 03 Nov 2015 23:14:50 GMT

that might have been Konnos