cross hipped roof
 

cross hipped roof
is it possible to design a cross hipped roof, without a post beneath the ridge and without using trusses? collar ties work well at a portion of the roof, but i'm not sure how to make this connection at the valley where the two hips intersect.
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yes, it is possible. stick building carpenters know how, if you can find any. the valley has to be supported, and it is usually done by propping up from a beam in the ceiling.
i use balloons.
mike mccann
mmc engineering
you are talking about an 'l' shaped building, i assume like the sketch attached. posts are not required, but you must tie the bottom of the valley beam to the bottom of the opposite hip beam by means of a tension member. that makes it a tied arch which is a simple truss. because of the length of the tie, you would likely need to support it intermittently from the upper