One of the best class I miss a lot, Dr. Ley just makes Civil sounds easy. Hope to see Dr. Ley around when I'm back in State!

Sir, you are a gift from God. I've only watched like 4 min of this tutorial and already feel better about my homework! You've won a subscriber!!! Thank you!!!!

I dont really leave comments, but this video made this sooo clear! when you repeat stuff and add sounds really helps me focus! thxs U got a new subscriber!

Thank you for explaining the concrete Interaction diagrams so précised!

What an amazing teaching style❤

Thank you for the most helpful description of these diagrams!

Thank you for making this video, this inspires me to create more structural engineering videos to share.

Simply explained on the theory to better understand. I went to the 9th IVY L school abt 30 years ago. And you are better at explaining and more fun. To be safe for column design , I would limit the ratio of ultimate axial stress over the F'c to 0.4. This will limit the max. steel bars to abt. 4% and avoid congestion at lappings.

Thanks for your great explanation 👍 the best teachers I've ever met .

Hi Dr. Tyler. This is brilliant- you explained it so simple and straight forward. Any chance you can do a video on a Pushover analysis? In fact any videos available on bridges will be awesome

Thanks alot sir It helped me alot Kindly keep uploading more useful videos like this

Thank you for making this video.

Looking forward to the design problem.

I had earphones on...my heart skipped a beat at 6.24....🤣🤣🤣

Thank you!

I love concrete design U make me like it more Good luck

What a great explanation!

I love you enthusiasm

loved it, fantastic! thank you

bro the loud noise shook me

Thanks !

I think I need an intro to this intro.

absolutely brilliant thank you

Beyond the lines, the possibility and probability of failure is higher? Since FOS is reduced!

I see it this way - if you design something then the best option would be to design it for a controlled failure. Imagine a bridge - if the ramp to the bridge fails at a lower load than the bridge, then the result would be less severe, especially if the design just causes a minor depression at a safe distance from the bridge. It could also serve as an indicator for maintenance where when some insignificant part breaks it's a sign that the structure has aged to a certain level and needs an overhaul. So sometimes failure is an option.

Good video

Great video Tayler!! Is Clarifyer, or whatever you should be said.

Hi. Do you have interaction diagrams for steel frames?

Nice one

thanks

So, um, where is the neutral axis for the point of pure compression or tension? Is it at infinity or the edge of the cross-section?

Dr Ley thank you so much for this informative video. Really filled in a knowledge gap I was trying to fill. The Four Critical Points: are we supposed to design the column based on these 4 cases? We must ensure that the column has enough capacity to fulfill the 4 cases?

Thank you very much sir

Well explained wow

Thanks you for made this video Can you explained Equivalent frame method (EFM) by Column Analogy Method Not from table

Excelent class Dr. Ley. Greetings from Ecuador

Do you mean phi for concrete or phi for the steel? Canadian code has phi=0.65 for concrete and phi=0.85 for steel. This is much simpler and gives practical results. I can see phi jumping to 0.7 for the concrete in the ductile zone and phi for steel jumping to 0.9 but I think that needs to be more clear.

Hats off sir

Ty

but what if we had more reinforcment !? not only 4 bars

Actually it is Sigma y [N/mm^2]= My [N*mm]*z [mm]/Iy [mm^4] at 0:28. Or Sigma y=My/Wy. @1:04 you just cannot sum or subtract N/mm^2 with N/mm^3. Nice explanations anyway!

man! he is so cool ;)

What can I say in one word about this video/channel... "Best"

Plz include stress and crack check .

Amazing!!

Why we only consider Compressive stress and Bending stress as a Combined stress ? Why don't we consider Shear stress in it ?

😂😂😂😂 والله عمده يحط عليك المفروض نترجمله السكاشن والله عشان تتعلموا منه

I'm from Bangladesh

:D perfect

Trigger warning at 6:24

Dude sounds just like Saul Goodman

I will never understand why modern engineering is using straight bars in beams, its more logical to use steel wire rope , atleast add it in the middle, pour concrete over it while its loose in curved hanging shape, and under heavy pressure load will be eaqualy distributed, it simulates curved shape of a bar in failure, so the whole beam elastic deformation part is just skipped, result is when it fails it just snaps and thats it, without any cracks or curving deformation. Its just stupid to put the bar straight on bottom and thats it, if its not an arch than tensile strength is in main role, so just imagine strained rope brigde , it doesn't make sense. It just annoys me that much. Its even posible to put flat bar above wire rope before pouring concrete and prestress it for even better results