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Old 01-26-2013, 03:30 PM   #1
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raised cornice for rafters


I am in the process of designing a detached garage with apt loft above. Rafters to rest on top of raised cornice (3- 2"x6"'s) on top of ceiling joist for a little extra height because I need all the extra room I can get. My first question is: is this ok, shouldn't go any higher w/ the raised cornice right? The only other option I can think of to get more room without making entire structure wider is to use 10' studs on first floor but have a 9' ceiling w/ jacks supporting joists. Also with first example of using the raised cornice, when drawing living space upstairs (12:12 pitch) I am measuring 1' rise to 1' run measuring from outside wall across floor and from floor to rafters. I figure the 3-2x6's will offset the amount I am losing for rafter notch cut, finished floor and ceiling. Hope all this is making sense and thanks for any help, I can provide more detail if needed.


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Old 01-26-2013, 03:43 PM   #2
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raised cornice for rafters


Why not a gambrel style roof? Or even a hip? A whole lot more room would be avalible.

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Old 01-26-2013, 04:01 PM   #3
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raised cornice for rafters


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Originally Posted by joecaption View Post
Why not a gambrel style roof? Or even a hip? A whole lot more room would be avalible.
You lost me on the hip having more room, there would be less room in a hip attic than a gable attic.

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Old 01-26-2013, 04:30 PM   #4
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raised cornice for rafters


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Why not a gambrel style roof? Or even a hip? A whole lot more room would be avalible.
I dont like the look of gambrel roof on garage.
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Old 01-27-2013, 09:03 AM   #5
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raised cornice for rafters


another way is to frame a knee wall onto the top plate that goes 6 to 12" above the top of the joists. build walls, set the joists, and then frame the knee wall right next to each joist with a double top plate on the knee wall and then frame the rafters. this could be better than laying down 3 flat 2x's
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Old 01-27-2013, 10:55 AM   #6
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raised cornice for rafters


actually, after more thought, I think i would rather widen structure rather than have cornice work sit too high from ground, top of windows/doors, also it will have a lean to porch and dont want that raised up to high also... so is 3-2x6 too much of a raised cornice, structurally speaking?


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