Adding tails, (overhangs), to structural trusses

Adding tails, (overhangs), to structural trusses

vanderloo5
Collaborator Collaborator
2,657 Views
15 Replies
Message 1 of 16

Adding tails, (overhangs), to structural trusses

vanderloo5
Collaborator
Collaborator

I'm trying to use structural truss Families for the first time and I'm not seeing how to add a 2' overhang tail on each side. Is there an easy way?

Also not seeing how to adjust pitch. I set the angle parameter to 18.5 degrees for a 4:12 pitch but nothing changed. And the constraints are all greyed out. I need to change the base level.

Thanks

0 Likes
Accepted solutions (1)
2,658 Views
15 Replies
Replies (15)
Message 2 of 16

barthbradley
Consultant
Consultant

End Ext.png

0 Likes
Message 3 of 16

barthbradley
Consultant
Consultant

You need to Unpin if you want expanded access to Parameters. 

0 Likes
Message 4 of 16

vanderloo5
Collaborator
Collaborator

Thank You Bart. How do I adjust the pitch?

0 Likes
Message 5 of 16

barthbradley
Consultant
Consultant

No adjusting necessary if you place the beams/beams system on a pitched work plane (such as the surface of your roof). The roof should be modeled first.  

 

Help | Work Planes | Autodesk

0 Likes
Message 6 of 16

vanderloo5
Collaborator
Collaborator

Problems-

I selected the whole truss in an elevation view and unpinned everything. Nothing changed in the properties dialog. Everything still says pinned. There is no parameter I can see to adjust the tail length, (or pitch). The constraints properties are still greyed out.

I'm using the Howe Gabled truss- 6 Panel

0 Likes
Message 7 of 16

barthbradley
Consultant
Consultant

TRUSS OVERHANG.png

0 Likes
Message 8 of 16

vanderloo5
Collaborator
Collaborator

Well, I guess i need to go to school on this one.

Your properties dialog says dimension lumber 2x4. Mine says Howe Gabled Truss- 6 Panel Standard

I'm gathering from that you built your own custom truss from dimension lumber.

None of my parameters are the same as your illustration.  My constraints are still greyed out. And everything is still pinned.

And, finally, I don't understand how I would apply the truss on a roof to get the associated pitch? I drew my gabled roof at a 4;12 pitch, tried to add a truss after, and it's sitting 8' above where I want it, unable to change the base, (greyed out).

0 Likes
Message 9 of 16

barthbradley
Consultant
Consultant

Nope. It's a Howe Truss using Dimension Lumber: 2x4 Structural Faming Type for chords and webs. 

 

Howe Truss.png

 

 

 

 

0 Likes
Message 10 of 16

vanderloo5
Collaborator
Collaborator

Why do you suppose none of my properties dialog matches yours?

Truss.png

0 Likes
Message 11 of 16

barthbradley
Consultant
Consultant

@vanderloo5 wrote:

Why do you suppose none of my properties dialog matches yours?

 


 

Looks exactly like mine. Those are TYPE Properties. I didn't show you any Type Properties in my screenshots above.  

0 Likes
Message 12 of 16

vanderloo5
Collaborator
Collaborator

Plumb_Cuts.png

OK. I have everything figured out except how to get plumb cuts on the tails and ridge. Is there a setting for this?

0 Likes
Message 13 of 16

barthbradley
Consultant
Consultant
Accepted solution

No setting. You need to manually cut each. I would do this in an Elevation View with Far Clipping set to "None" and using Cut Geometry and "Multiple" to cut the ends, one by one, back to a Ref. Plane.  

 

CutPlumb1.png

CutPlumb2.png

0 Likes
Message 14 of 16

vanderloo5
Collaborator
Collaborator

Thank You Bart. All is good now.

0 Likes
Message 15 of 16

ToanDN
Consultant
Consultant

Instead of doing it for each truss, tab select the member of one truss, unpin, extend it to a ref plane, then make a group and copy, or array to create the rest.

0 Likes
Message 16 of 16

vanderloo5
Collaborator
Collaborator
Actually I did click Accept solution earlier today. I showed on screen but I guess it didn't stick. Will re-select.
0 Likes