Good Evening,
Just finished the roof on a custom barn were doing. Blind valley over workshop to main barn went smooth, but then we set the Andersen 45 degree bay window and had to frame the roof over it. No big deal. Other than we framed it twice, and I’m not sure it is correct still. I haven’t framed one of these before, so check my process and let me know how backwards we did it. Thanks a bunch.
Andersen 45 degree bay window with cable supports from seat to header
6:12 pitch
Centered ridge board over window
Cut hips on 6:17 from bay corners back to ridge
1 common rafter on 6:12 between hips
Rafters from ridge to edge of window cut on 6:17 at top and heel
This looked ok but no way to maintain an even soffit reveal around window.
Take apart
Follow 22.5 degree line from outer edge of window back to building wall
Cut ridge 1.5 inches longer than measurement and install assuming hip rafter will center at bay intersection.
Cut hips on 6:17 at top and heel
Commons on 6:12 at top and heel
Are the rafters from end of “ridge” to plate along building common or hip? We cut them at a 6:17 and they wouldnt plane out. After messing with them we got it, but I have no idea why. It looks fine, but if it isn’t right, I will tear it off and frame it 5 more times. I know there is a mathmatical way to figure this, but I read every page in the Swanson blue book and was stumped.
I’m sure this is old hat to alot of you, and any insight would be much appreciated.
Thanks.
Cole
Cole Dean
Dean Contracting
Replies
Have a look here. :-)
http://www.taunton.com/finehomebuilding/pages/h00126.asp
Erik,
Thanks,
I feel slightly less stupid now. That article is just what the framer ordered. Thanks again.
Cole
Cole Dean
Dean Contracting
Don't feel bad. I've cut some pretty funky roofs in the past few years. But those dinky little bays and funky bumpouts can still have me staring at the framing square and scratching me head. Seems like you've got what you need now with that link, so good luck.
Yeah, we tore the prototype off and re-framed it in about 1 hour on Friday morning. That article was great. Although I thought the "cut on er' till she fits" method would have worked too.
ColeCole Dean
Dean Contracting