Collar tie roof system
Collar tie roof system
(OP)
Do you have an easy way to manually calculate rafter forces in a collar tie system?
What I've come up with is to check the rafter as a cantilever with span from the tie connection to the bearing for deflection; and check combined bending and axial for the full rafter length, using same moment from cantilever. This seems to match computer results fairly well.
Thoughts?
Thanks in advance
David B.
Fredericksburg, VA
What I've come up with is to check the rafter as a cantilever with span from the tie connection to the bearing for deflection; and check combined bending and axial for the full rafter length, using same moment from cantilever. This seems to match computer results fairly well.
Thoughts?
Thanks in advance
David B.
Fredericksburg, VA





RE: Collar tie roof system
Or do you have rafters where the only tie between them is a collar tie several feet above the supportts?
RE: Collar tie roof system
RE: Collar tie roof system
Jordan
RE: Collar tie roof system
I believe the thread is IBC Collar Tie Conflict.
RE: Collar tie roof system
How to calculate 'Rafter Thrust' thread507-105386