[Solved] Project a 2D and 3D Stair representation since 1D elements

[jtm2020hyo]

Sound easy, but this being harder than I was expecting

I tried to create a 2D and 3D Stair realistic representation using 1D objects (sketcher wb lines) but I can't find the necessary tools. At this point, I request help from the community to create an open workflow for everyone to create any stair since 1D elements.

To start, I create 2 Sketches representation for 2 Stair, with and without turn, a 3D representation imported since AutoCAD Architecture and 2D manual no exact representation.

Stair 1



Stair 2



3D representation imported since AutoCAD Architecture, if you check the file even Autodesk fail here



2D faces projected in Z-Axis for the slab representation



notes:

1 ) stair-2 probably can be created since BIM WB Stair Object but I request a global workflow to create any stair shape using FreeCAD general modeling features in Part WB or Part Design WB to be edited and create a workflow with Reinforcement WB.

2 ) 3D is TechDraw plotting and 2D for FEM analysis ...

Attached 3D File:

https://drive.google.com/file/d/1qQyQgA ... sp=sharing

[thomas-neemann]

.... I request a global workflow to create any stair shape using FreeCAD general modeling features....

is that a solution for you?

any staircase can be created with it.

phpBB [video]

[jtm2020hyo]

I think this workflow could be is the best for a metallic staircase with 1 section, extrude, array using sketcher is very efficient.

... for any-wear-shaped like u-shaped with turn, use 2 or 3 separate sections staircases and merge in a unique solid could be the easiest method to create.

... but for reinforcement concrete, we need also to considerate the rebar design, actually, our reinforcement WB does not support rebar for staircase, for this motive my first idea is to create a staircase using any project tool that can be useful for 1D objects (rebars), 2D objects (face slab for FEM analysis), and 3D objects (For FEM and Details TechDraw), I mean, we can project a 2D face like a Stair, then we could project 1D and 3D objects.

[paullee]

Currently, Arch Stairs tool support creation from simple lines representing flight and/or landing except winder

Discussion

[thomas-neemann]

is that helpful?

https://tube.tchncs.de/videos/watch/abb ... bfe9375ffb

Bildschirmfoto_2021-04-11_10-47-53.png (174.14 KiB) Viewed 1412 times

[papyblaise]

Here is a first try by combining several workshops
enough to occupy your Sunday,
I tried to make it faster

[papyblaise]

faster and with the underside of the mezzanine better finished

[papyblaise]

I have a much nicer staircase to offer: 23 steps with a perfectly helical 1/2 turn underside, and 1.6 m on the first climb, 1.3 m at the top

[papyblaise]

And now with a rampe in both side

[ABeton]

Hello, those are some good looking stairs I attached a file of an idea I had how to do the stairs, you might want to check it out. It could perhaps be made fully parametric if some obstacles are overcomed. I did them in the Link FreeCAD so I hope you won't have problem oppening the file.