Curving stairs to a curved wall

[Anonymous]

i have a curved wall in a project i am working on.
was wondering if anyone knows how to curve a straight set of stairs tothe wall
thaks

[Ralph Wessel]

KRAY345 wrote:

Ralph wrote:

KRAY345 wrote:
i have a curved wall in a project i am working on. was wondering if anyone knows how to curve a straight set of stairs tothe wall

the attached image shows how this can be easily done with OBJECTiVE

Would it be possible for you to write a little more in detail on this way of doing it, as it looks pretty easy.

I've never been able to get the results I want from Stairmaker. It's a bit buggy, but aside from that it simply isn't flexible enough to produce the results I want. I can produce exactly what I want by modelling it.

I don't know much about your requirements, so I'll show you some of the basics (and one of my own projects with curved stairs). Following the numbering in the illustrations:

1) Make a bendable profile for the stair by drawing a section through it with the Fill or Slab tool. OBJECTiVE will convert this to a profile object, prompting for the bending axis. You want the stair to curve to an arc in plan, so the bending axis will be level (see the picture). As the illustration shows, the stair can then be curved in either direction.

2) Place the stair in plan, and bend it to the edge of the wall (click and drag). The results are shown in plan and 3D.

3) You might also do something similar with the handrail, but this time making a section profile. Again, draw a section through the profile and OBJECTiVE will make the object. Place it in the plan, use the 'Bend' tool to shape it to the wall curve in plan, and the 'Offset' tool to set the top end of the handrail.

4) You can echo step 3 to shape the top of the wall if it also rises with the stair. OBJECTiVE's 'Regular Profile' object can be used for this, bent and offset in the same way as the handrail, and SEO the top of the wall against it. The results are shown in OpenGL and rendered.

5) Some example pics from a project I applied this to. Almost everything is curved in both plan and elevation, and we went through almost a dozen (very) different schemes. OBJECTiVE is designed to shape objects without removing their intelligence (so they can be repeatedly bent, offset, rotated, and split without becoming a 'dumb' shape), which enabled me to model this without blowing the project budget.