Slope Deflection Method - Sidesway Frame Analysis (1/3) - Structural Analysis

Detailed example problem showing how to determine the internal end moments of a statically indeterminate unbraced frame with lateral loading (with sidesway).

Part 1: Problem background, FBD, and exploded drawing
Part 2: Writing out the slope deflection equations
Part 3: Equilibrium equations, solving for displacements, and calculating end moments.

[bikramjitghosh]

I have never seen anyone so happy doing a slope deflection problem!

[makdavian]

I'm sure you get this a lot..but you have no idea how much you help us and your "actual" students better feel grateful as heck for having you _in person_ as their instructor.

[structurefree]

It's been long overdue, but now it's here. Statically indeterminate, unbraced (sidesway) frame analysis using slope deflection equations.
-Structure Fo-rizzle.

[jooliroo]

I just want to say that I love your introductions to each video.  Makes me laugh every single time.

[一哭二闹]

you cant imageine one day bfr exam i saw your video and so excited, dance like 10 min, pls do more video like this, you enlighten my journey in structural!

[joaquinfabrega]

I really like your entusiasm and energy while you explain the problems. You rock!

[danielwilliams]

when structurefree is so happy on a day..

[aammans]

Just imagining that, my lecturer have been spent about two weeks explained this with ain't benefits, and I've started smell the F grade and worried all the time .

But because you I got 9.2 out of 10 of the Quiz .

Thanks a lot bro " hug :P "

[Nuurto]

Thank you for your hard work and focus, it really makes a difference...

[ferdousashrafi]

Great video! Thanks a lot. Do you have any series for mechanics of fluids? That would be really helpful.

[emreyuksel]

You are making our day sir:) Thank you so much for the video.

[sethchristeverlastinggodki]

Hey Man, can you help me? I have a portal frame similar to this one. I have to solve it using the moment distribution method but my problem is I can't figure out the fixed end moment for member AB. So member AB Is 12m long. Has a 20kN point load acting at 6m and 20kN point load at support B. Could you tell me how to find the fixed end moment for the beam? Cheers!

[ahmedhyd]

Good one on slope and deflection problem portal frame, thanks. Please Upload some videos with sloping leg sway portal frame

[a.msayem]

Sir thanks a lot was waiting for these...:)

[shirkeomk]

Amazing man ! you are a hero ! thanks a ton !

[Fksjuabs]

Do you have a video of such frame with 3 supports and not 2?

[yehudawolovitz]

hi @4:00 how do you know that is the left side of the cut?

[ehsanullahnazari]

Thank you sir but I have a question what if we have a roller support at joint D in that case should thetaD will be considered or not?

[gundepudiumashankar]

Which books do you refer . Please share with us too...

[xualan]

Thank you the videos are really helpful for my revision. Just came across a similar question however the member BC is of infinite rigidity. How do we deal with that? Does it mean slope angle b and c are 0? All the slope deflection eqns I wrote are leading me to a dead end. I just assume that all joints will become plastic hinges even if it experience the slightest sway. Appreciate if u could help! Thanks!