As posted in the General Discussion folder, I have a strutural engineer who refuses to accept the strenth of a traditionally framed hip roof. He calculates the size of the hip member as if the structure has no collar ties or ceiling joists (volume ceiling). Can any one help me set him straight with reference books or articles that will back up the traditional framing with numbers?
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Replies
bump
Brian this is a bump
Read it this morning .
http://forums.taunton.com/tp-breaktime/messages?msg=106703.1Waiting to see what develops from the others comments. He already has input from knowledgeable people here.
They can't get your Goat if you don't tell them where it is hidden.
didn't see that post until I saw this one!
He has worded this one differently, so now he is really confusing things by having two posts on the same subject but with different information.In the other one, he indicates that there are no ceiling joists, but in this one it may not be the case. Instead of clearing things up, he just starts over....no wonder his engineer isn't getting along with him.
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I am so confused!!!!!!!!
ok i think i see now, you do have joists and collar ties, which prevent outward thrust in two directions.
the hip roof will however thrust in four directions, if not designed for volume ceiling.
if you shear your ceiling with plywood glued and screwed to prevent thrust in four directions you should not have to calculate for a volume ceiling, but the hip itself is still a structural member and should be calculated.
even if i am full of it, whats the matter with using the engineers requested hip? what is the harm in overbuilding a little? ever see an old structure with sag? you don't know what your limits are unless you exceed them, or unless the engineer says so.
i hate engineers, almost as much as consultants.