CE 540 Mod 2.2 Rankine Earth Pressure

[@2000nawabali]

Thanks a bundle Dear Professor Kitch Sir. You explained Earth Pressure really in an amazing way. Stay blessed Sir

[@HarshGupta-rs4pl]

Very nice explanation, didn't get a vedeo as good as this.thanks

[@GenaEnSamIAm]

Soils don't suck. Tough crowd. LOL!!! This guy is the freaking best!

[@sam111880]

its kind of cool that for fluids Pascal's law makes it trivial for finding lateral forces and pressures. Vertical forces for solid or fluids are relatively simple calculations but when it comes to solid like soils lateral forces it is a little bit trick to model a formula for it specially for different grades or when clay / plasticity effects come into play

[@abanahmed4683]

impressive

[@ahmedobidat1743]

In 5:25, why when you move the wall to the left the horizontal effective stress decreases? Thank you

[@sam111880]

well at least the lateral force equation for a particular element having that then integrating the small rectangles like you do in fluid dynamics is the same. After solving it one can set the equation equal to zero for equilibrium or uses derivatives to find the min/max pressures

[@rubendariotejeda3086]

At min 58:09 when you simplify sigma prime x equation by substituting Kp, you changed minus sign to plus sign

[@engm.h.s2184]

Can the critical height (Hc) be computed when (C=0.00)? means in a granular soil only?

[@introductiontogeotechnical4976]

Yes. When c = 0, Hc = 0.

[@mrmadame28]

Thank you!

[@man1977sor]

???what is the equation of ''c'' value

[@ahmedobidat1743]

Under untrained conditions, why is Φ equal to zero?

[@kimlengkl2001]

sorry, why the failure plan of passive is 45-fi/2

[@jacksonzheng4288]

By using POLE method in soil mechanics to locate the failure plane~

[@kimlengkl2001]

Jackson Zheng I see!

[@ahmedobidat1743]

the sine equation that the professor derived can be converted to tan^2 (45-fi/2) Using TRIGONOMETY FORMULAS

[@sam111880]

when c' is add it becomes a little more algebraic manipulation but not to bad to solve gives you a square root term and K is not by definition K = rho_x/rho_z any more.

[@sam111880]

nice for 1-sin / 1+ sin = cos part just the identity 1 -y / 1 + y = sin since tan * cos = sin solving for y gives you the formula y = 1-sin/1+sin :)

[@scientificresearch1400]

these conditions are very confusing....

[@sam111880]

not really an identity just substitution y = rho_x/rho_z