cross bracing_modeling angled cables_rotating in 3d

[Anonymous]

I need to model cross bracing(cables) for a manufactured steel building. I have tried the column tool and then attempted to alter the angle, but this is very awkward and difficult to control. If anyone knows of an effective method I would appreciate the incite.

Thanks,

Matt

[TomWaltz]

I think you are looking "insight," not looking to incite any riots here 😉

I'd go for the cylinder object. It will let you control the size and the rotation angles like you need, working either in plan, 3D window, or parameter menu.

[Djordje]

For cross bracing, use TrussMaker. You can control the joints too. One for each size - sorry!

For the roof cross bracing, you can do it with very thin roofs. Then group or save as an object.

I could swear that I have seen a cross bracing parametric object somewhere. Did have an idea of writing one, but did not get around to it even after more than three years of doing steel structures exclusively ...

Steel cables, tension wires - Cylinder, that can be angled - even graphically in the 3D window, that is the best way. A properly placed and thin enough roof will always do ...

And - don't insist on rounded elements, except if you are looking at it from half a meter. A square section will do as well.

HTH,

[Ignacio Azpiazu]

Djordje wrote:
And - don't insist on rounded elements, except if you are looking at it from half a meter. A square section will do as well.

I did my crossbracing in a preengineered building, and also in some prefab bleachers, with roofs. Roofs are awesome for tweaking heights slope etc. I actually moduled out the St Andrew's cross (that is, two roofs) so that revising and updating the design etc. was even more awesome.

Also a lot of cross-bracing is actually flat steel, so the ArchiCAD roof gives you a lot of flexibility for producing that too (whether the crossbracing is on an inclined roof plane or in a vertical wall plane). And then you put that in your S-COLS or S-BEAM or whatever layer, so find-selecting is very easy too (not many roofs in S-etc.).