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Thread: Roof Framing - clipped truss

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    Moderator cellophane's Avatar
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    Roof Framing - clipped truss

    One of these days I'll be able to answer questions instead of just asking...

    Anyhow - Not sure what the 'correct' or 'best' way to put together a roof is. I'm not quite sure how best to explain it - hopefully the image can do it for me. I believe it is a clipped / bob-tail truss and I'm unsure of how to handle the clipped portion above the wall. I know I could use a wall for the clip which I can host my EIFS sweep on but I'm not sure how that would translate in detailing.

    Thanks
    Attached Thumbnails Attached Thumbnails Roof Framing - clipped truss-roof-framing.jpg  

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    Quote Originally Posted by cellophane View Post
    One of these days I'll be able to answer questions instead of just asking...

    Anyhow - Not sure what the 'correct' or 'best' way to put together a roof is. I'm not quite sure how best to explain it - hopefully the image can do it for me. I believe it is a clipped / bob-tail truss and I'm unsure of how to handle the clipped portion above the wall. I know I could use a wall for the clip which I can host my EIFS sweep on but I'm not sure how that would translate in detailing.

    Thanks
    Hey, wait in line buddy!
    I'm not up to speed on trusses at all, but wouldn't that be modeled in your truss family? As for the EIFS, I ususally use the fascia tool and attach it to model lines. The fascia tool is pretty sweet once you get used to it.

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    Why use Fascia instead of Wall Sweep? I mean besides the fact that, in this case, it's a fascia...

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    The main reason I use fascial is because a wall sweep is only horizontal. What if it's a gable end? Fascia FTW!

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    Moderator cellophane's Avatar
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    I'm not worried about the truss itself in the model since other than sections it won't appear and it can just be drawn there. I don't know how to deal with the wall to roof condition in the model. Normally the roof slopes down and bears on the wall, which if not clipped would be a few more feet farther out.

    The roof finish is +/- 24" above the top of the wall and rests on the clipped truss with some misc. framing for the fascia. Applying the fascia sweep isn't a problem either - I know how to do that. What I don't know is how to get the roof finish surface at the level it should be with some appropriate framing between the wall and roof. Does that make sense? I appologize if I'm not being clear - it's hard to explain via text & images sometimes.
    Attached Thumbnails Attached Thumbnails Roof Framing - clipped truss-roof-framing-2.jpg  

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    That's where you are losing me. Won't that area be made up as part of the truss? When they build it, they'll slap on the trusses, put on a fascia board to cover the ends, then apply the EIFS. Or am I way off base here?

    I'm thinking make the truss, which will include the 24" area. Put it in your model. Put in 2 fascias, one for the sheathing that will cover the ends, and one for the EIFS. Slap on the roof and have a beer. No?

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    So this is a construction question and not a Revit question?

    If so I think I'd continue the wall framing up into the area but I don't honestly know if you need anything in there other than misc. framing for the fascia.

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    Moderator cellophane's Avatar
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    It's a Revit question. I know how it will be built but I'm unsure of the 'model it the way it will be built' solution. I'm most likely overthinking it all. I'll slap in a stud wall between the masonry wall & roof and call it a day.

    Thanks for the help. One of these days I'll figure it all out.

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    If I understand you right, you just need to unlock the finish layer of the wall and give it a Top Extension Distance of 24" - See attached.
    Attached Thumbnails Attached Thumbnails Roof Framing - clipped truss-top-extension.jpg   Roof Framing - clipped truss-unlock-layer.jpg  

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    That won't work either, because the 24" area is at an angle where the finish layer is. I still say it's a truss on the wall, so model a truss with the extra framing. Cap the openings between the trusses, and apply the EIFS fascia.

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