Curve Stramp

[Anonymous]

Hi people its me again can anyone show me how to do a Curve Stramp. I can do a curve ramp using mesh tool and i have tried to use stair maker but i can not create a Stramp, somebody has suggested me to use roof tool over a curve stair, i have tried unsucessfully, can anyone show me the CORRECT way to create a Curve Stramp. thanks alot

lovetrain

[Anonymous]

mark's method is better. mine used another object under each stread, subtracted, to get the curve of the underside

however you do it, one suggestion, if you need to edit the stramp, start again from scratch. it'll be much quicker


ponders for a moment

using mark's method, the u/s of the stramp will step (which could be what you want, i've never designed a stramp). with the mesh (and SEO) you can get a smooth u/s

bill

[Anonymous]

As long as you use the Mesh to Roof tool there should be no steps on the underside of the "Stramp". It will be smooth! Cool, I posted my first useful tip! Definately in-debt to the forum.

[Anonymous]

mark

no, you won't get steps under each individual section (which i hereby pronounce shall be hereafter called a strampette) of the stramp , but, using the mesh to roof tool, surely you end up with a step on the u/s between each strampette.

since each strampette/roof can only have a constant thickness?

happy to be proved wrong on this

bill

with you absolutely on the utility of this forum thing. learnt more, much more, here, than anywhere else

[Anonymous]

For those interested in curved ramps, stramps, and trimming curved walls to have a sloped top, and for other uses,
I made a modest little object that makes a ramp or a strampette
both with smooth undersides.
I did this initially because the "curved ramp object" in the
standard library both in AC 6.5, AC 7 and AC 8 is made with
the RULED command which is only a surface not solid and
I'm guessing is the reason it won't work with SEO.
Zero thickness doesn't work with SEO.
This object is made with the bPRISM_ command and is solid
and therefore works with SEO and gets around all this work involving,
meshes, mesh to roof, and SEO to get a smooth underside.

If anyone is interested, e-mail me and you are welcome to it.
Peter Devlin
cdev@adelphia.net

[Anonymous]

The RULED command still produces a surface model? Too bad.

All the other previously surface forms in GDL (that I've checked) are now producing true solids.

[Anonymous]

Matthew,
Is this true of the SWEEP command?
I looked in the newest GDL manual and it says
that SWEEP is a surface. But if your right
that it displays as solid this is good news.
What other previously surface forms in GDL
are now solids?
Peter Devlin

[Laszlo Nagy]

I think you can just cut the given object with a Section and see if it displays a section Fill. If it does, it is solid.
That of course means I don't have the exact answer to your question, I would have to try it myself.
Laszlo

[Anonymous]

Laszlo is right. You have to test them in 3D. The manual still lists the forms as surfaces even though they have since been changed to solids.

I haven't tried them all, so I don't which ones might still be surface models. I discovered this when I wanted to use the TUBE to make an element to use as an operator in SEOs.

[Laszlo Nagy]

As a rule of thumb that might be true:
Those GDL commands that create bodies are solid.
Those GDL commands that create surfaces are not (e.g. COONS).
But in case of the earlier, it is also important what you set with the MODEL command.
MODEL SURFACE or
MODEL SOLID.
Check that in the ArchiCAD Help. It has a picture of it.
Laszlo