topic Re: Stair tool, sloped riser face at nosing edge in Modeling

Stair tool, sloped riser face at nosing edge

Ignacio Azpiazu — Thu, 25 May 2023 14:39:00 GMT

This is an existing stair, from the '70s. Cast in place reinforced concrete, concrete screed, rubber flooring.

On the left the closest I am getting to so far with the Stair Tool. I can't get the sloping riser finish face to meet at a (sharp or rounded) edge with the tread finish face —instead I get that tiny overhang, which will get worse if I set a larger tread finish thickness (say screed + rubber) and almost disappear if I set it close to 0, but then because the nosing fillet is set within the thread finish thickness the fillet will almost disappear too.

What would be the way of dealing with this using the Stair Tool?

Re: Stair tool, sloped riser face at nosing edge

Lingwisyer — Tue, 10 Mar 2020 01:27:49 GMT

Could you just define the entire tread and riser as a Complex Profile as is?

Ling.

Re: Stair tool, sloped riser face at nosing edge

Barry Kelly — Tue, 10 Mar 2020 01:34:12 GMT

Have you tried using the 'Profiled Riser' and then creating your own custom complex profile for the riser?
It can then be any shape you want (but it won't include the tread nosing).

Try a 'Filleted' nosing rather than a round or possibly even a custom complex profile for that as well.

Barry.

Re: Stair tool, riser face at nosing edge

Laszlo Nagy — Tue, 10 Mar 2020 17:13:07 GMT

I would create custom Treads and Risers in the Profile Manager and use the "Profiled Tread 23" and "Profiled Riser 23" GDL Objects, for the Tread and Riser, respectively.

Another possible solution is to turn off Risers, and use only Treads. Then I would create Profile in the Profile Manager that would represent a single Tread+Riser combo so their connection would be smooth.

Re: Stair tool, riser face at nosing edge

Lingwisyer — Wed, 11 Mar 2020 01:12:12 GMT

Duplicate post: https://archicad-talk.graphisoft.com/viewtopic.php?f=20&t=69280&p=308137#p308137

Re: Stair tool, riser face at nosing edge

Barry Kelly — Wed, 11 Mar 2020 01:37:44 GMT

Lingwisyer wrote:
Duplicate post: https://archicad-talk.graphisoft.com/viewtopic.php?f=20&t=69280&p=308137#p308137

Duplicates have been merged.

Barry.

Re: Stair tool, riser face at nosing edge

Ignacio Azpiazu — Wed, 11 Mar 2020 22:17:44 GMT

First attempt with profiled treads and risers, which I figured might be convenient until I understand how stretchiness works or not in these profiled components. [Initially I made the riser stretchy vertically only, and the tread stretchy horizontally leaving the nosing untouched.]

Runs work beautifully, but damned them stairs have landings. Quick and dirty is slab to complete landing flooring, any better idea please let me know.

Re: Stair tool, sloped riser face at nosing edge

Lingwisyer — Thu, 12 Mar 2020 01:20:30 GMT

Yeah... I have not figured out how to manage custom treads at landings...

Re: Stair tool, sloped riser face at nosing edge

Minh Nguyen — Mon, 16 Mar 2020 12:35:16 GMT

Hi All,

Thank you for sharing the experience!

Placing custom treads for landing can be difficult, as it takes some trial-and-error to get it to work right.

Here is my example with a custom profile placed as treads for landing. Please find the process in the attached GIF below (it's a heavy one, so let me know if it works )

I hope this will give you an idea on how to make the custom tread profile to work on landing.

I wish you all a great day, and take care!

Best regards,
Minh

Re: Stair tool, sloped riser face at nosing edge

Ignacio Azpiazu — Tue, 17 Mar 2020 01:37:00 GMT

mnguyen wrote:
Here is my example with a custom profile placed as treads for landing. Please find the process in the attached GIF below (it's a heavy one, so let me know if it works )

[GIF works beautifully, Minh.]

Can you make that work with a profile including a built-in nosing and a landing polygon that has been reshaped?

- I first tried with 'Uniform Finish in Flight and Landing', and I get a typical tread depth, with 'Front' nosings all around; when I click on the left side of the polygon to make it 'left', it disappears as in the last picture.

- I then duplicated the profile for a landing-specific variation, keeping the origin and making much wider (deeper tread), and get the second-from-bottom picture; things disappear as soon as I start assigning 'left' (or right) side to the other polygon edges;

- I then made the profile width exactly what was needed for the top of the first run, but things get weird and again disappear as I start assigining left and right sides.

Then again I wouldn't think profile width can be the issue, because then things would get weird again as soon as I edited the landing polygon. So I can't tell what is going on.

Re: Stair tool, sloped riser face at nosing edge

Minh Nguyen — Tue, 17 Mar 2020 13:09:25 GMT

Hi Ignacio,

This is the reason why I said it is a trial-and-error process The Custom tread was not designed for this purpose (that's why I use only a very simple profile for the landing). I can give it a try to see if I can make it work somehow. Is it possible for you to share a copy of your stair (with all complex profiles you are using for the stair)?

Let me know if you need a secure link to send the file!

Thank you very much!

Best regards,
Minh

Re: Stair tool, sloped riser face at nosing edge

Minh Nguyen — Thu, 19 Mar 2020 09:21:42 GMT

Hi All,

Thanks to Ignacio's file, we figure out what would be the best option in this case. Instead of using a custom complex profile to model the whole landing's finish, it can be done by using the default tread object, in this case, Tread 23, and add a Nosing: Custom Profile.

A custom profile can used as the Nosing Shape. This will give a much cleaner result in comparison to applying a custom profile for the whole landing finish. Then, with a bit more modification, you'll have the finish set up correctly on the landing.

To apply/remove the nosing at a given edge, please refer to this guide, scroll down to Define Custom Tread Segment: Front, Back, Left, Right section: https://helpcenter.graphisoft.com/user-guide/76597/

I hope this will give you an idea of how to model landing finish with custom profile!

Thank you for your contribution! Have a nice day, and stay safe!

Best regards,
Minh