whoever gave this a thumbs down must be CRAZY! Being able to see a visual representation of what is happening on the graph while the test is being conducted is what makes this such an effective video. I look forward to viewing your other videos CHEERS!
Thank you for this video. You have helped me develop a better understand on concepts I have struggled to learn. This is one of the best videos I have come across. I especially liked the corresponding mohr-circle diagram to triaxial type test! Thank you!!!
it is hard to find videos of this quality: clear sharp narration, easy-to-understand, detailed explanation, amazing graphical (visual) presentation. thank you so much!
Thank you so much for your simplified and on the point explanations. I tried a lot of text books but everything was a bit complicated, for me. Your voice is clear and slides are well made.👍🏾
I live where the Triaxial stress is so expensive and the university never turned the device on or fully explain how things go during the test, I can't thank you enough for this outstanding explanation.
Thanks for your video! Its clearly observed misbeliefs of foreign geotechnical engineering based on outdated Therzagi's theory. Very helpful for my students.
Hi, thanks for the informative video, I learnt a lot! However, there's something that has been bugging me. From what I understand on my notes and also from my search, effective stress = total stress - pore pressure. But from your video on the part of CU, effective stress = total stress + pore pressure? Do correct me if my understanding on the video is wrong.
I have a question: in the last test (CU), first you allow water to drain slowly to measure sigma_3, and then close valve to measure excess water pressure, how did the gauge measure water pressure? Did you fill the sample with water again after drainage and before closing valve?
for consolidated undrained test of normally consolidated clays in my textbook ....effective stress mohr circle is depicted by solid lines while total stress circles are by dashed lines also total stress circles are shifting right to the effective stress circles .....i.e effective stress are less than corresponding total stresses......i am confused.
Thanks!! This video helped me a lot. However I do not understand why is in consolidated and undrained triaxial test the pore pressure negative. Could you tell me?
ferfixer2 When soils are sheared under drained conditions they can either contract (decrease in volume) if they are relatively loose or dilate (increase in volume) if the are relatively dense. This happens because soils are made up of individual particles that roll and slide over each other during shearing. If the soils are saturated and sheared under undrained conditions there cannot be any volume change (contraction or dilation) because both the soil and water are incompressible (relatively speaking). So instead of volume change during shear, there is a different reaction--change in pore pressure. Relatively loose soils generate positive pore pressure during shear because the soil wants to compress and push out some water. Relatively dense soils generate negative pore pressure during shear because the soils wants to dilate and draw water in. Hope that helps. I have some nice ideas for videos on this, but they won't be done for some time.
What is the highest triaxiality factor that can happen. Since triaxiality factor is ratio of mean stress, to the von Mises equivalent stress, what does it mean if triaxiality is 0.5, or 1, or 1.2? What does that mean for material? is it possible that TF is larger than 1?
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whoever gave this a thumbs down must be CRAZY! Being able to see a visual representation of what is happening on the graph while the test is being conducted is what makes this such an effective video. I look forward to viewing your other videos CHEERS!
Thank you for this video. You have helped me develop a better understand on concepts I have struggled to learn. This is one of the best videos I have come across. I especially liked the corresponding mohr-circle diagram to triaxial type test! Thank you!!!
A simplify yet comprehensive explanation about triaxial tests. Thanks a lot for a helpful video
it is hard to find videos of this quality: clear sharp narration, easy-to-understand, detailed explanation, amazing graphical (visual) presentation. thank you so much!
Dear Professor Kitch, Thank you so much for such incredible explanation; you saved my life :)
Thank you so much for your simplified and on the point explanations. I tried a lot of text books but everything was a bit complicated, for me. Your voice is clear and slides are well made.👍🏾
extremely thankful to u for this video... i was confused from many days about this topic.
It was an excellent presentation with to the point explanation with figures. Easy to understand the concept. Thank u soo much professor
Thank you yet again Prof. Kitch for using your talents to help unlucky students make sense of all the letter and figure salad !
Thank u very much for this video. One of the best video I have ever seen. All my concept about this topic is clear now.
excellent video, one of the best study tutorial video i have gone through. thanks a lot sir
Many thanks. This video was really helpful. And its like The Godfather, I watched it 3 times and still enjoyed it.
I live where the Triaxial stress is so expensive and the university never turned the device on or fully explain how things go during the test, I can't thank you enough for this outstanding explanation.
absolutely great tutorial or lecture. helpful for anyone who was in doubt like me. Thanks by the way
Thanks for your video! Its clearly observed misbeliefs of foreign geotechnical engineering based on outdated Therzagi's theory. Very helpful for my students.
Thank you so much for this video, such an amazing way of explanation.
Thank you so much. It's very conceptual and cleared my all doubts.
Thank you! This will help me with my geotechnics exam :)
very nice and effective presentation .... all the concept that you have told can be easily understood ......thank you for this great work ....
SUCH A SIMPLE AND TO THE POINT EXPLANATION OF CU,UU,CD TESTS
Excellent explanation! Love your ending :)
Thank you! Extremely helpful.
Really helpful for confused engineering student like me! thank you!
Best video for triaxial shear test.
Excellent, concise and clear!
That’s what happens when we mix the hight knowledge and super teaching ability, very very useful, much better than my text book.. thank you so much
thank you sir . it helped me clear my concept quite efficiently.
Thank you so much for this video....I was very confused about this topic
Cleared my doubts. Thanks!
very nice video . thank you very much for such a quality content.
Outstanding explaintion I'm really happy with thus vedio nd I learn very much about this topic
Amazing explanation!
Wishing to see more of these helpful videos
thank you for being so awesome!!!!
Excellent explanation
That was very helpful, THANK YOU!
Good Video. Thank you! The last part was the best!
Detailed presentation should be like this. Thank You Sir
you're a total mvp sir
great video on triaxial shear test
very good demostration thank you a lot
this video saves my life thanks Godbless
Thanks for video. it is really helpful for me to understand. good explanation. great
This is a great video indeed. Thanks.
best video ever!! nice job
Amazing video!
Thank you for this video!
best explanation ever
very good explanation! !
Love you sir!
amazing video
Very good videos I am happy with this
Thanks a lot, good lecture
Suparb explanation...👌👌
really nice presentation...
great video
Thank you very much!
Sir I love your explanation. I greatly appreciate your work. Love from India.
thank you Prof.
Thank you so much hocammmmm
really nice video
thanx a lot.... great lecture
Excellent! That is all I can say!
The Best video
Yes
everything is clear sir ..
Thank you!
Thank you sir
thanq very much sir
Thank you so much!!!!
awesome thank you!
Thank you very much
Thanks very much
many thanks
Thank you so much.
its very helpful video
excellent
God Bless you
thank you!
thx a lot Prof
Thanks a lot!
You are excellent
Very nice sir
Thank you :)
Awesome!!!!!
Very helpful.
Could you give practical examples when to use each test??????????
Nice
Thanks from Turkey
You’re welcome.
Thanks
thanks a lot
god bless the Americans!
Hi, thanks for the informative video, I learnt a lot!
However, there's something that has been bugging me.
From what I understand on my notes and also from my search, effective stress = total stress - pore pressure.
But from your video on the part of CU, effective stress = total stress + pore pressure? Do correct me if my understanding on the video is wrong.
thanks a lot :))
I have a question: in the last test (CU), first you allow water to drain slowly to measure sigma_3, and then close valve to measure excess water pressure, how did the gauge measure water pressure? Did you fill the sample with water again after drainage and before closing valve?
for consolidated undrained test of normally consolidated clays in my textbook ....effective stress mohr circle is depicted by solid lines while total stress circles are by dashed lines also total stress circles are shifting right to the effective stress circles .....i.e effective stress are less than corresponding total stresses......i am confused.
In Consolidated-Undrained Test,
Why negative pore pressure is developed ? Why not positive pore pressure ?
how do we go about using the data to draw required mohr circle?
In CU test there will be effective stress in confining stage as per my imagination and concepts but hear taken total stress in confining stage
Thanks!! This video helped me a lot. However I do not understand why is in consolidated and undrained triaxial test the pore pressure negative. Could you tell me?
ferfixer2 When soils are sheared under drained conditions they can either contract (decrease in volume) if they are relatively loose or dilate (increase in volume) if the are relatively dense. This happens because soils are made up of individual particles that roll and slide over each other during shearing.
If the soils are saturated and sheared under undrained conditions there cannot be any volume change (contraction or dilation) because both the soil and water are incompressible (relatively speaking). So instead of volume change during shear, there is a different reaction--change in pore pressure. Relatively loose soils generate positive pore pressure during shear because the soil wants to compress and push out some water. Relatively dense soils generate negative pore pressure during shear because the soils wants to dilate and draw water in.
Hope that helps. I have some nice ideas for videos on this, but they won't be done for some time.
Introduction to Geotechnial Engineering Excelent!
@@introductiontogeotechnical4976 best reply of my utube life
@@introductiontogeotechnical4976 waiting sir
Vishabjeet Singh Rajput please see this webcast for an explanation dilation and contraction during shear. th-cam.com/video/XCOPNMDhXkM/w-d-xo.html
does consolidating the soil mean the confining pressures are increased ? Because it says the soil is consolidated before being compressed
What is the highest triaxiality factor that can happen. Since triaxiality factor is ratio of mean stress, to the von Mises equivalent stress, what does it mean if triaxiality is 0.5, or 1, or 1.2? What does that mean for material? is it possible that TF is larger than 1?