http://i.imgur.com/3CYzk8d.jpg


1) what does it mean when a frame is swaying?

and

2) how can u tell if a frame is going to sway or non sway?

I have never heard of such a thing.

a) Non-sway frame– one in which the transverse displacement of one end of the member relative to the other end is effectively prevented. This applies to triangulated frames and trusses or to frames where in-plane stiffness is provided by diagonal bracings, or by shear walls, or by floor slabs or roof decks secured horizontally to walls or to bracing systems parallel to the plane of buckling and bending of the frame.
Sway frame – one in which the transverse displacement of one end of the member relative to the other end is not effectively prevented. Such members and frames, occur in structures, which depend on flexural action to resist lateral loads and sway, as in moment resisting frames.

That problem in particular should be non-swaying.

This post was edited by Dontrunaway on Nov 20 2014 10:46pm

transverse is up and down right?

i thought sway was like a column is moving left or right?

Transverse should be left/right. Since both ends are pinned, then the relative displacement between the two ends is zero, thus there shouldn't be any swaying.

so if its not swaying, is phi = 0 always the case in the slope delfeciton formula..

Mab = 2EI/L (2ThetaA+ThethaB+Psi) +/- FEM_ab

where Psi = -3Delta/L

anyways , thjis is what I have so far.. but idk if im setting it up right.

http://i.imgur.com/CPsP1Hc.jpg

someone embed this image

i plotted this on visual analysis to get shear and moment diagram, but compared to my diagram, its off by a little