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**Alex Cunningham** · July 5, 2011, 04:15 PM

I am not sure what you mean byt cross sections. Are you talking about having your truss parametric?

**alexsasu** · July 6, 2011, 08:21 AM

I mean for example the webs to be U shape profiles and the top chords- rectangular hollow profiles...

**Alex Cunningham** · July 6, 2011, 03:14 PM

The top cord, bottom cord, vertical webs, and horiz webs can be assigned from the type properties window after the truss is placed in your project. You will need to load the member sizes and types first. The truss family is just a template. No member association is assigned within the family.

http://screencast.com/t/ZSWk7IEL

Hope this helps.

**Karalon10** · July 26, 2011, 02:23 AM

When you place a truss family, it will make all of the members in the truss the same size as the LAST framing element you placed.
If you just placed 600x600 concrete beams, your truss will be that.
If you just placed 25 x 25 Equal Angles, your truss will all be that.

What I usually do is place a member in the size of my desired top & btm truss chords, then quickly delete it just so I get the member I want.
Then click on your newly placed truss and do as suggested already, in the properties of that truss you can set the other members.
But you can not set other webs ie you can not have one web in the same truss different to another web of the same truss (hope that makes sense) All webs are the same is what I mean..within the one truss.

**lucis29** · July 31, 2011, 02:46 AM

Alex, just a small advice.
Revit is not ready for steel detailing. I recommend you use other programs.

**Alex Cunningham** · August 1, 2011, 06:36 PM

Originally posted by lucis29 View Post

Alex, just a small advice.
Revit is not ready for steel detailing. I recommend you use other programs.

Did I say anything about detailing. The OP was asking about trusses and changing the framing members within the truss not detailing. You can use Revit for steel detailing just fine. You just have to think out with the old and in with the new. I recommend you use Revit 100% of the time. Dont give up on it.

**mdradvies** · August 1, 2011, 08:13 PM

Well, I don't do detailling a whole lot, but when I do, most of it is in 3D too... sssoooo pretty...

**Karalon10** · August 2, 2011, 11:47 PM

This is completely untrue. I detail steel in revit often, get great results, and furthermore can provide 3d views of difficult connections for clarification on my drawings. Trying to keep on track, these are steel truss custom made families, AND modelled steel bracing cleats and fully modelled joints which I used on a project to show a complex connection.

Attached Files

**Ben-May** · August 3, 2011, 02:55 AM

Originally posted by Alex Cunningham View Post

The top cord, bottom cord, vertical webs, and horiz webs can be assigned from the type properties window after the truss is placed in your project. You will need to load the member sizes and types first. The truss family is just a template. No member association is assigned within the family.
Hope this helps.

You can actually load in framing families to your truss family, and preset the members for each truss component

But you are still limited to only having settings for "Top Chord, Bottom Chord, Verticals & Diagonals"
If you need particular Verticals or diagonals you need to reassign after creating the truss in the project

The problem with trusses is that you cannot easily create a fully welded truss that looks good in 3D, you are left with manually coping each member.

We need an option to specify the end join which will automatically cope each truss member if specified

Karalon, you left the reference to a particular company in the disclaimer

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