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Forums >> Revit Building >> Technical Support >> recommended way of modeling wood-framed roof?

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Fri, Oct 26, 2012 at 10:25:04 PM | recommended way of modeling wood-framed roof?

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EricHenyey


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Is there a generally-accepted method for modeling a wood-framed roof?

 

The obvious approach is to make a roof type that includes all the layers of the roof.  For example, I am working on a project that will have wood shingles over plywood sheathing over 2x12s.  But if I make a roof type with this assembly, I end up with a 12 1/2" thick slab that looks terrible where it projects beyond the walls.  The rafters on this house do not extend beyond the wall plate and the fascia assembly is shallower than the framing members.

 

Is there a way to tell Revit to stop the framing at the walls but continue the sheathing and finish layers to the edge of the roof?

 

Or should I try to make two roofs (one consisting only of framing, and the other one consisting of just plywood and roofing) and layer roof one over the other?

 

Or is there some better approach?

 

My firm typically designs roofs that have variable pitches - the one I am working on has a mansard roof and dormers with sprockets (outsweeping curves at the eaves) - so I think we will be modeling the roofs by extrusion most of the time.

 

We're usign Revit Architecture 2013.



Edited on: Fri, Oct 26, 2012 at 5:27:01 PM

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Sat, Oct 27, 2012 at 9:27:21 AM | recommended way of modeling wood-framed roof?

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Typhoon


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Maybe this is what are you looking for: http://www.tools4revit.com/BIM-SOLUTIONS/Wood-Framing-Pro/

 


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Mon, Oct 29, 2012 at 3:18:41 PM | recommended way of modeling wood-framed roof?

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EricHenyey


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Thanks for the reply.  But I'm not trying to accurately model every framing member - I just want to model a roof that does not have solid extruded eaves as thick as the roof framing.  Hopefully there is some way to do this without buying another piece of software.  It seems that anyone modeling a roof with exposed rafter tails, or with sprockets, or with a shallow fascia, would need to do this.


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Mon, Oct 29, 2012 at 3:25:41 PM | recommended way of modeling wood-framed roof?

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WWHub


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Your suggestion earlier of modeling rafters + finishes is correct.  You can build a roof that is just plywood and finishes.

 

If you are using other means of support with open eaves, then only model the top finishes for the whole roof.  Add any other elements sperately.


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Mon, Nov 5, 2012 at 9:34:01 PM | recommended way of modeling wood-framed roof?

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EricHenyey


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Thanks for the message.  I modeled the roof as two separate roofs (one containing just a 2x12 layer, the other containing sheathing and roofing) and that seems to work well.


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