TTK et al,
The width of the main part of the house is 28 feet, so the rafters span 14 feet from wall to ridge. The perpendicular wing is 24' deep, so the rafters span 12 feet. The roof slopes are about 8: 12 and 6: 12, so the hip is not quite at a 45. The valley rafter span is approximately...
Regarding the load on a valley beam being twice that on a hip beam:
Each rafter that connects to a hip beam is supported at both ends: typically by the hip beam at the high end and by the bearing wall at the low end. So, the hip beam supports half of the load of the rafter.
The jack rafters...
I am in a quandry, and have been here for some time. I have seen many hip roofs, even some with a valley intersecting where the hip hits the ridge, constructed without a post.
I normally calculate all hips as beams and all valleys as beams (the procedue I uses shows that a valley beam...
I am designing an addition to a church under BOCA '96. It is to be multi-purpose with offices, classrooms, and corridors. What live loads would you recommend? Would you design the whole thing for 80 psf (corridors) so that it can be reconfigured any way for the future?
I am looking for the best descriptive source for analysis and design of this type of connection. I have AISC 9th, and Salmon & Johnson 3rd. I cannot find reference to "Whitmore" section. I could use immediate help (757-428-6471), and your input on the best resource.
Thanks!
