topic Re: Velodrome in Modeling

Velodrome

Anonymous — Mon, 31 Mar 2008 16:24:11 GMT

Help! I am in the process of modeling a velodrome. Some description: The track is about 250 meters around=straight and curve. The track is 12° on the straights and increases in incline to 40° at the end of the curve--the incline only occurs at the outer edge. The incline starts at the beginning of the curve. Obviously I am not giving you all of the details but enough to understand the question: I can model the track with a spiral--I have done this with ArchiForma--but I haven't figured out how to make the outer edge of the spiral rotate at a different degree than the inner portion of the spiral? The inner edge does not elevate at all. Any ideas would be appreciated--thanks in advance!

Re: Velodrome

Thomas Holm — Mon, 31 Mar 2008 16:35:22 GMT

The straight parts should work with roofs. The curved parts are more trouble.

In the standard library, there is a curved ramp object that you might be able to customize.

Otherwise, I think the easiest way to do this is to approximate the track with a mesh.

Or buy Objective!

Re: Velodrome

Rakela Raul — Mon, 31 Mar 2008 17:08:26 GMT

Ramps in interchanges have a vertical and horizontal alignment (we can do that in archicad) but on top of that, ramps have slopes that go from positive to negative on the same alignment..thats a problem to archicad tools.

(of course if i understood your question right) !!

within archicad (nor objective) we dont have the ability to 'twist' a plane; but with maxonform or C4D you can.

with maxonform you can grab one end of your roadway and twist it to a desire slope, leaving the other end fixed or twisted to a different slope if you wish. something like the attached image

maybe there is a way of doing this in archicad, i would like to find out myself

Re: Velodrome

Dwight — Mon, 31 Mar 2008 17:43:57 GMT

Without add-ons:

The quickest way to make a sweeping bank is to describe the key section shapes - say six or eight of them per 90 arc, create a custom profile wall for each. Place the profiles, then use them to elevate a mesh into the sweeping bank.

Re: Velodrome

Thomas Holm — Mon, 31 Mar 2008 21:29:55 GMT

Rakela wrote:
within archicad (nor objective) we dont have the ability to 'twist' a plane

Sure we have, at least within +- 89° or so... As Dwight and I have said already: Mesh tool!

Re: Velodrome

Anonymous — Mon, 31 Mar 2008 21:48:38 GMT

TWIMC, I found the Mesh-to-Roof add-on works pretty good. A little cumbersome but it works. Please see pdf enclosed.....

Re: Velodrome

Dwight — Mon, 31 Mar 2008 22:25:37 GMT

That track actually has the same slope all around? It just gets wider at the ends?

Re: Velodrome

__archiben — Tue, 01 Apr 2008 05:18:46 GMT

well it looks pretty easy to me

~/archiben

Re: Velodrome

Rakela Raul — Tue, 01 Apr 2008 13:58:19 GMT

Sure we have, at least within +- 89° or so... As Dwight and I have said already: Mesh tool!

Dwight and Peter already gave me a lecture on the mesh tool !!....I thought it was a more complicated model.

Re: Velodrome

Gus — Thu, 08 Oct 2015 02:45:57 GMT

Did you ever end up modeling this velodrome? I would love to see it.

Re: Velodrome

Ralph Wessel — Thu, 08 Oct 2015 09:32:13 GMT

dabarch wrote:
Help! I am in the process of modeling a velodrome. Some description: The track is about 250 meters around=straight and curve. The track is 12° on the straights and increases in incline to 40° at the end of the curve--the incline only occurs at the outer edge. The incline starts at the beginning of the curve. Obviously I am not giving you all of the details but enough to understand the question: I can model the track with a spiral--I have done this with ArchiForma--but I haven't figured out how to make the outer edge of the spiral rotate at a different degree than the inner portion of the spiral? The inner edge does not elevate at all. Any ideas would be appreciated--thanks in advance!

I think you should be able to model this with Objective. You can make custom profiles that can be twisted through a specified angle as it bends around a curve. If you fix the profile anchor to the bottom edge, it will remain level (and the other edge rises/falls). I've attached a quick example modelled with Objective, although I suspect the actual solution is more complex than what I've modelled.

Re: Velodrome

Anonymous — Thu, 08 Oct 2015 14:49:26 GMT

Please see the link to the youtube video: https://www.youtube.com/watch?v=SSDKbtInXd8 The BVV is open and running in Erie, Colorado: http://www.bouldervalleyvelodrome.com/