6_2 THREE POINTS TRUSS (OCTET TRUSS)
October 11, 2009
This is a similar example of space truss using triangles. It is also useful to generate triangle surface panelings on any surfaces.
The logic is the same with 4-Points Truss. But it is a little complicated because it is coming from rectangular grids using ‘mid points’.
Click Here for Tutorial PDF Download : 6_2 THREE POINTS TRUSS
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8 Comments
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Hi,
I posted this at the four points truss before, but it should be here…
is it possible that there is something wrong in the tutorial of the script?
at 8.1 the false/true pattern seems to block everything…
I need this to work urgently, please advise
The Cull information on the tutorial is right. One thing I missed on tutorial is “flatten”. As I said, you should make them “flatten” at the input of those Cull components. I updated the tutorials about where it should be “flatten”. Thanks for your comments.
HG
2010/1/6 Hyoung-Gul Kook
> Thanks for your comments. But I can’t answer now. Maybe, you should check > “flatten” option. I’ll follow up tonight. > > HG >
Ah nice
looks like that’s it!
I still have some minor problems in my grid, and I have another question for you.
I’m missing 2 grid lines in my grid plus some strange lines at the beginnen of my script, and secondly I would like to alter the height of my truss as the U or V lines get closer together, cause that’s a problem with my design.
I have a loft that get’s thinner in the middle so the truss seems compressed there
reducing the height locally occording to the (inverse) of the distance of the grid points or lines.
Could you help me with that?
I would like to use that in my project but I have to present on thuesday.
Just let me know if you have the time so let me know if not cause then I’ll move on like I have it now, can’t afford to lose time.
Thanks anyway!
PS here are some pictures of my design and problem:
http://users.skynet.be/am028560/truss.rar
Kind regards
Pieter
Hello HK,
I find your blog and its content very useful, and this is a topic of great interest for me,
Just going through the tutorial for your 3 point truss, Having a bit of a difficulty going through the tutorial definition posted, in the tutorial at (8-2-1-1 Shift, 8-2-1-2Shift L: End( E)) the connections actually differ from posted image.
and at (12 Ln, 13Ln) this where the definition starts falling apart, just not getting the lines as intended even after “flattening” the Cull inputs.
Need your Help if you can.
Major Thanks, and keep up the good work!!
Kind regards,
Christopher
Hi HG!
Your tutorial about 3points Trusses is great! I had followed and finished it! thanks for sharing with us. However I have a question with my project. May I change the direction of the triangular that we use to make the trusses! My issues are showed on this picture- http://farm5.static.flickr.com/4046/4559868944_29a16c789b_b.jpg
Would you mind to help me please!
Thanks you very much for your help!
Best regards!
Tuan Anh.
Hi Tuan,
Thanks for your interests. You could do it. why not? I believe anything would be possible if you have exact image and logic to build it. Thus, you know, it triangle surfaces are from 3-points. So you should think about how to move or rotate each 3-point groups. You can simply make 3-point plane on each surface and rotate each 3-points along the plane axis. However, I don’t know what you imagine. Because when they rotate, it affects all other points, which might be messy without exact plan or image. Maybe you might need to make a new definition for that.
best, HG
HI HG!
Thank for your advising! I had thought again and found out that my issue is from the way of making surface! So by changing the process of making surface in Rhino to change the UV direction of the surface, I can solve my issue!
Thank you very much and keep up the good work!
best regards, Tuan Anh
I love your website and all the tutorials!
So inspirational and I love your work.
Please, keep up the good work
Marios from Sweden