The Effect of Water on Soil Strength

[@meetpatel-lf8dh]

Water actually reduce the effective stress. And shear strength is proportional to effective stress 🤸🏻‍♂️, that's why it losses it's shear strength.

[@markflierl1624]

1:53 I like how he calls friction "sheering resistance".

[@ichweinicht1858]

*shearing resistance

[@ichweinicht1858]

there is a bit of difference between those two

[@adiver_]

Friction is general term whereas shearing resistance is used in soil mechanics quite often

[@uSeeGeo]

One of the best demonstrations for a soil mechanics course! love to use it in my undergraduate geotechnical engineering course.

[@elganaelmehdi1697]

One of the best demonstrations for a soil mechanics course

[@markflierl1624]

This was a fascinating video. I'm a mechanical engineer so I never learned about strength of soils. This is more for civil engineers.

[@oliviayeo5753]

Really kudos to his calm and clear voice which makes it easier to undertsand. (uni proffs rush their lesson for gods know why reason and ultimately their sentence structure were in mess) The words and phrases his used were precise.

[@roshan-yb1bd]

what a mind blowing explanation........!

[@daviddiaz1279]

roshan took the words right out my mind seriously kinda creepy.

[@SanjayGupta-nt9vn]

Nice explanation with physics experiment for High School But for an Geotechinal Engineer: 1) Moisture Content 2) Surface tension 3) friction or shear strength 4) Optimum Moisture Content

[@robertoandrada]

Brilliant explanation by Prof. Burland

[@SandipanNaths]

Brilliant presentation Prof.

[@jacksonzheng4288]

The best explaination!

[@vrcfncpdci]

Vajont dam disaster (1963) in Italy was also caused by quick filling of water capacity ignoring this soil mechanics effect on a formerly known instable slope of Toc Mountain. This mechanism triggered a deeper rockslide, according your description: increasing water pression reducing shear resistance.

[@vrcfncpdci]

Furthermore the front of rockslide from Toc Mountain draw a letter M.. curiously few hours before disaster a large Number of young men in Lavarone, organized a blasfemy rally procession against Virgin Mary. A Priest in Casso Village had in former time a vision about this disaster... 😢😢

[@a.msayem1663]

i wish there were more videos......his explanation made my day

[@dt.8732]

Great and Simply explained vedio.❣️Thank you sir.

[@hydrogenperoxide9995]

As a civil engineer, I agree with everything that you have just said.

[@johnnybow7045]

At 2:10 I first thought: "Is he a bloody magician?"

[@saremish]

Great demonstration!

[@raihankrenz]

what a great explanation, thank you sir

[@GenaEnSamIAm]

Wonderfully put together. Well done sir. Thank you for your contribution !

[@ychang3660]

what an ingenious explanation and experiment design.

[@DalelAzaiez]

THank you for this video ! Would you do a video to explain negative and positive pore pressure (plz)?

[@rachaelgroves1470]

Great set of videos. Really helped

[@snackgila]

Profesor, i lived in high tide area, every year i saw many building start to shift to the left or right side. I lived in west borneo. What best advice to build a foundation in high tide area especially if the land is peat most or gambut area? Thank you so much.

[@aszx-tv4pq]

Such a nice person!

[@kunmu4750]

these are a series of good videos !thx for uploading!

[@mushtaqdass7421]

thankyou sir...that is how vetern professors make complex looking things on books so easy...

[@dereenaldoambun9158]

Thank you for the great explanations.

[@callen752]

Good video for explaining some soil Civil Engineering concepts.

[@farhatjaved3874]

Thank you very much sir. Difficult concepts explained in best possible manner. Thanks for sharing your invaluable knowledge with all engineers and students of engineering. Much appreciated.

[@alwinrobb8745]

Mind opening explanation.

[@MohitAwasthi01]

Beautiful demonstration!

[@whatchusee3404]

Well explanation and good examples and understanding

[@stephen5147]

Excellent info.

[@veganbackpacking-8559]

Other than the fact that this knowledge is useful, I could listen to Mr Burland for days! His voice is an instant stress-reducer! (helpful when exams are in two days) :-)

[@Hitngan]

Brilliant explanation of pwp

[@beasmith2668]

Very well explained!

[@hillaryclinton8729]

Thanks a lot. Wish I was taught like this

[@luisesantiago1498]

The best explanation ever

[@rhysprevite8733]

Great experiments to explain the concepts.

[@fastgap180]

Thank you. If you can upload with subtitles It will more helps to understand quickly

[@rishanmukherjee2078]

This is master class concept for most of land slide.sir,can u explain the pore water pressure generation in NC-OC clay.I am requesting you plz enplane the Drained and Undrained shear strength behavior of pure clay(whose liquid limit is greater then 250%) .

[@thekrmgnr]

excellent explanation that I have ever seen !!

[@SS-Shadow]

Extraordinary teacher..

[@MoMo-qu3ys]

Thank You for that explanation.

[@Loki.Variant]

outstanding video , very helpfull thanks a lot

[@cemaslan7225]

More comprehensive than attending soil mechanics course for a year

[@fabiolus2007]

wow I came here cause my teacher has no clue what his talking about, I might share this with him. Brilliant!

[@ADITYAKUMAR-mb5ht]

Sir please make an video of skempton pore water parameters

[@CarloRobiati]

Wonderful.clear explaination

[@csecure6157]

very good information

[@united3689]

So the surface tension - is that why we apply some moisture to soils when compacting? Is this the point of reaching the optimum moisture content?

[@born2leadproductions936]

What’s the different between the damp soil that collapsed and the damn soil with high surface tension? He never poured water on the second pile of damp sand

[@atifajaz2970]

U explain very well sir

[@mohammadslz8067]

tnx alot professor

[@user-oi9nf8ve1b]

Very good! Thanks sir!

[@marshmelows]

My man John Burland doing the explanation :O. Thanks sir

[@khoryonghau2594]

this is amazing. I love this.

[@Test-gs4ni]

Cup, it is a cup.

[@Assam-bt1dl]

wow.... 😍 looking forward for your next videos eagerly...

[@lli870]

So does this mean that for granular materials, a little bit of water increases the stability, but too much water offsets this increase?

[@WordsandNumbers1]

*But if two particles are fully submerged in water, the increase in water pressure has no effect in the effective stress between particles*

[@adityamehra7238]

Beautiful

[@Adventure2127]

water pressure acting upward which reduce the contact force between solid and beaker is due to water head between solid and bottom of beaker ?

[@nanukaruniawiguna3127]

good job my friend

[@warrensze321]

It is really amazing!! Thank you so much!

[@ridwasurono]

wow keren beautiful explanation

[@heartrobber8977]

I didn't understand the last concept! Why the second one is strongest? Even when 2nd & 3rd are same soil? 3rd just have bit more water content. So what .. 2nd will also increase its water content when tied will come in!?

[@emaduddin1877]

sir can u explain the of shear strength of an expansive soil

[@kuldipbadwal7731]

the best one__amazing

[@dwyt]

thanks for this great video :)

[@Berlintheking]

Thank You.!

[@ExquisiteTopHat]

I may be dumb, but for the hole in the cup demonstration, wouldnt a nicer explanation be "the water flowing out pushes the cup up so that the cup glides on the water instead of the grippy wood"

[@meetpatel-lf8dh]

Sheer explanation.

[@Kevin-ie4jb]

Impressive

[@hani2010]

Great ! Great ! Great ! Thank you so much ..

[@aswincivil97]

thank sir, i have one question the failure occurs by friction between two particles or water pressure change (hydro -static pressure )

[@egicool5753]

I don’t really understand this. Is what he means in a damp soil the surface tension between the grain increases its sheer strength but if you give it too much water it reduces its sheer strength? So how do you check if the soil is too wet?

[@ecuawezzy]

check the water content.

[@izawahab6495]

hello, i'm a student who worked on triaxial consolidated undrained on peat soil.. i would like to know if is it okay if pore pressure more higher then back pressure...if not okay..please explain to me why its happen.

[@highlightsontheway7012]

Nice explanation I am seeing from India

[@zhiar3052]

Is shearing resistance same as frictional force?

[@vrcfncpdci]

No It Is not.

[@muralidharreddy4969]

As surface tension is caused by water and also shear is also caused by water then how can u justify it?

[@rasinshort4817]

Thanks sir

[@marifigueiredo1988]

I love it!

[@jayachannel5866]

sumpah,,,,, cuma demonstrasi ini yang bikin saya yakin,,, selama ini saya ragu

[@ibssanjaya964]

great

[@marcelog590]

Empuxo e índice de saturação do solo

[@mijumaru14]

this video is about effects of water to soil?

[@istadgamer12345]

Simplified explanation for Engineers at globe

[@Hitngan]

Wish I went to Imperial

[@sanamsahito]

Excllent

[@Ritercrazy]

Water is remarkable.

[@Shaloksh007]

Wow!!!

[@uysoreaksmey7588]

i like ur video

[@tolgahan5027]

its like he is from westeros and good explanation

[@truthisbeautiful7492]

INTENSE

[@Tubeytime]

Doing god's work

[@shashankagrawal9091]

like explantion keep explain us in future

[@mountains889]

you never have the "tide come in on the second one"

[@killadog84]

I think because he's trying to show the difference between a damp soil, and a damp soil affected by a tide. the surface tension on its own will increase the shear strength of a damp soil, but if that damp soil were to be affected by a tide, the water pressure introduced because of that tide will reduce its shear strength. i think.

[@NixonRexzile-xz4sq]

@@killadog84 you think, but still clueless right cause this video is completely stupid, and with a cup has a hole was bad a explantion

[@vivalaleta]

Regenerative agriculture is the way forward.

[@thedarkyellowpages4016]

The middle sand did not slide because he didn't pour water.