Portal Frame
Portal Frame
(OP)
What is the difference between portal frame with cladding surrounding 4 sides on plan and the one without in terms of structural analysis ? how do we check the lateral stability of the portal frame in the transverse direction ?






RE: Portal Frame
Frames without cladding, assuming a roof of course, these forces will not be present because the wind will pass through. However, this situation can give rise quite large uplift forces on what is now effectively just a canopy and the frame will need more rigorous checking for stress reversal on the rafters and purlins together with uplift on the bases.
RE: Portal Frame
DaveAtkins