topic Re: Truss object with overhang in Libraries & objects

Truss object with overhang

Haneef Tayob — Thu, 23 Mar 2006 16:09:12 GMT

Hello
Anyone know where I can find a good truss object which allows me to set overhangs:

I want to try to avoid using trussmaker or creating a new object as I find these to be relatively slow, especially when you're making lots of changes and trying different options.

In early stage of the sketch design, when thing are still going through lots of changes, I usually use the standard AC9 Pitched Howe Truss which is fully parametric. I then add the overhang with a separate rafter object using roof wizard as the 'Pitched Howe Truss' object does not allow one to set overhangs.

thanks

Re: Truss object with overhang

TomWaltz — Thu, 23 Mar 2006 16:27:18 GMT

Does the Truss Set on Objects Online do that?

If not, maybe I should write one that does and add it on there...

(maybe with graphic hotspots for variable slope and overhang size....)

Re: Truss object with overhang

Anonymous — Thu, 23 Mar 2006 17:46:23 GMT

I always use the TrussPro object. There are no Webs. Once I created Webs with Rafters for 3D Representation, but mostly the Webs are added as 2D Polylines, grouped and then copied into Crossections that require them.

Re: Truss object with overhang

TomWaltz — Thu, 23 Mar 2006 18:27:00 GMT

Jay wrote:
I always use the TrussPro object. There are no Webs. Once I created Webs with Rafters for 3D Representation, but mostly the Webs are added as 2D Polylines, grouped and then copied into Crossections that require them.

That's almost exactly what I was imagining, but I can't help feel like the overhangs and slope should have hotspots to control them.

"Hi, My name is Tom, and I'm a Graphic Hotspot addict."

Re: Truss object with overhang

Anonymous — Thu, 23 Mar 2006 19:37:50 GMT

Well Tom, if you create a Truss Object make sure that the Height at Heel Parameter works correctly. If you say want an Extra 1/4" or 2" (for a 8" or so total Heel Height) added to the Heel Height of the TrussPro Object and it does not display properly in 3D especially with the OpenGL Engine.
An example: for a 7 1/2" Top Chord (6:12), 5.5" Bottom Chord (3:12), any Heigh Height under 0'-11 3/16" displays erratically.

Re: Truss object with overhang

TomWaltz — Thu, 23 Mar 2006 19:47:20 GMT

Jay wrote:
Well Tom, if you create a Truss Object make sure that the Height at Heel Parameter works correctly. If you say want an Extra 1/4" or 2" (for a 8" or so total Heel Height) added to the Heel Height of the TrussPro Object and it does not display properly in 3D especially with the OpenGL Engine.
An example: for a 7 1/2" Top Chord (6:12), 5.5" Bottom Chord (3:12), any Heigh Height under 0'-11 3/16" displays erratically.

Jay

by "Does not display right", do you mean that it overlaps itself and seems to turn inside out? Or is there another problem I'm not seeing? Or that there are still extra lines when you set the clip plane?

(man, those seem like obvious problems!!)

-Tom

Re: Truss object with overhang

Anonymous — Thu, 23 Mar 2006 21:42:30 GMT

OpenGL Shading is Missing It looks like the front and back faces of the truss are Blank when "turning" the 3D Window.

Re: Truss object with overhang

TomWaltz — Thu, 23 Mar 2006 21:58:48 GMT

Jay wrote:
OpenGL Shading is Missing It looks like the front and back faces of the truss are Blank when "turning" the 3D Window.

If I EVER write an object that does that, I hope the client will smack the crap out of me for it.

Re: Truss object with overhang

Haneef Tayob — Fri, 24 Mar 2006 06:59:05 GMT

Jay wrote:
I always use the TrussPro object.

Thansk fo rall the helpfull feedback. Unless I'm mistaken, it seems that AC9 international version does not come with the TrussPro object.
In the meantime I'll have a look at ObjectsOnline to see what they have to offer.

Re: Truss object with overhang

David Maudlin — Fri, 24 Mar 2006 13:17:30 GMT

TomWaltz wrote:
by "Does not display right", do you mean that it overlaps itself and seems to turn inside out? Or is there another problem I'm not seeing? Or that there are still extra lines when you set the clip plane?

Tom:

Jay's problem was discussed here: TrussPro Object view Problem

David

Re: Truss object with overhang

Haneef Tayob — Thu, 13 Apr 2006 14:34:24 GMT

TomWaltz wrote:
Does the Truss Set on Objects Online do that?

I've tried the demo of Truss Set. Unless its a limitation of the demo verison, it does not seem to have setting for overhangs.

However Truss-DL from the same site works very well with overhangs - It's basically what I was after.

Thanks for the tip