huangyhg

clipped hip dormer roof
so i have this project with a lot of dormers. the dormers ridge beams are clipped at the front so i must use bent ridge steel beam. do i have any other option? do you think i can do wood moment connection? what shall i use? let me try to draw it with the keyboad of the section of the roof.
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no wood moment connection (always a bad idea), steel would be the best for what you have shown. usually, though you can support the dormers on the rafters on either side of them. there should be a better solution. isn't there a window where you are showing the steel?
here is the elevation. the thing is, if i use bent steel (w 10x12), i will have to connect this bent steel beam to wood. i hate steel to wood connection. any idea?
ok, much better picture. this thing is so small it would really be a shame to use steel. does the ceiling follow the profile of the facia? if so, the hips can support the roof, and be supported by a tail bearing truss composed of rafters and ceiling joist located at the apex of the hips. analyze with risa or equiv. for stresses.
i dont know if i follow you structuralaggie. but i have simmilar dormers around the house (13 total). some are a lot larger than pictured. as usual, i didnt get reflected ceiling plan but i am pretty sure it will follow the profile if possible.
the one you showed looks pretty small, so if there is a ceiling you should be able to get it to work using wood only. if there is no ceiling, you will need steel. i would use a bent c5x9 (min.) located at the apex of the roof (same place as the wood truss indicated above).
i could post a picture, but i'm not sure how to do that.
i think i got it.. i think steel is the way to go like my original plan but i will use w10x12 just because i have rafters hanging from it.
i'd try to provide a post at the ridge/hip work point and support the post down to the ceiling joist or a beam in the ceiling space. that does assume you have a ceiling space.

yeah, cant do that shepherd. i swear i almost break my laptop. this architect is crazy. i am pretty sure none of the interior walls line up between upper, main and lower level. i cant put the columns straight down to foundation!
one thing of concern is the ventilation of the space and maintaining your thermal envelope to prevent 'ice damming'.
dik
w10x12 will certainly work, but it won't fit in the ceiling/roof cavity unless you are using 2x12 rafters. the way you are proposing the bent beam will work too, but 90 deg. to how you are proposing is how i would do it, with a simpson hrc connector at the hips to the bent steel beam.

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