(a) Briefly explain Mohr-Coulomb theory and show how we can determine the shear strength parameters of...

영 Soil grains Straughter from Strength ga soil isa Resiste Against Succor deformation.

Soil May deained its Shood followenig Pesquelea 0 friction Glee Paodice duo to sliding or or Rating [ sand gravel and silt ② Julen locking blew Prodicles [ gravel and douse sand] Colosion of Intermolecular allraction due to or Aduosion [ Sin eclay] ion MO inferlocking F = UN - Ôntund friction Suun R 144 lataus MOHRS THEORY CAnalysis of SAND) Consider a elemoul Just below the foaling T Juari Tia Najor principal stress T2 = the cruodicale princival Stress Minor Princercel Stress 82=83 CG=03) Turk

COST SO MUY Along e So Mhesis Narudd gyross In dicoro of siu? ol (Diar, I a4/51-03) (as 20 3) (0526 2 1 Shase Saross T. 6) Sinzo ß= tant Pasulteno stress Кур Tonete? Auglo og Ceblicesites ( 17 an) The Show failuoo will error on that plane in which Rosultand Stross [FR] is most reclined with the Nornal of that Plane. sarh a plono is called critical Plane or fallue plane and the angle o is callod Critical angle of failo plone [oc]. on Failoo plane Al failure your stress COF At time of failure Oc Gli Toalt This is min" M ou Borut Koilf • Baar do-Bomlu "Cos(96.82 componend Along failoo akng this puno Shape Strauchten "S" is anual to the Shona stress prochured critical plane al limiting Condu [Just before the gaikone). failure Plane TR is most inclined with normal Houco of thad Plane Bram is called Maxa angle of Oblianity And it is also toned As Internal friction clugle on the

tulee out of you OR Angle of 79.

S: Slates Flyenefren 711 S. S: Noly Cirrte for cond Mohr failure analoge a Taten B radius Jonas 2. 20C Imp Ne ~ oble Tn c 0103 2 1800 IN A OBC Cod CBALO Foron + gut 180-200 Pour tgo 180 4st Power -| Loo ve with Masot Preaped Plan

Nool от ское Neley failure will crouge Stress lie on Omuelo po whoneas Qolow tuo Frugo eurolep poproeuls tuo Surte den Sto Cound puche furitused Chope, Theorgiuecry frilus Specimen Bin Joine Mila (954 Spin 2 Nooz Ju Caso of Sand and silt This logs than in case of clay To marko Ju faço Clays failure plane will be plano y Twax which forms horizontal Mohr failure envelope Moky Ciftere for Clay 11 - Mour failure envelope S=Tlle Tmax C C D (os irit On Tmax = Tiro 2

Julia 3= ssil .T3 Cell prossure Mass 11 11 گیا Coul prosswo All Round the soil deviator Stress load Appliedon soil aftor making acell prossuone Constant. TT 1,0,fra ITE T34 Td Case] Ju budrained Condition Mans drainage not allowed, so Pore water pressure Generated, Honce we consider Elective stress paramotor - T = Jst od Ba 400 2063 300 -146= 154 Ko/M2 (13)8 194 kN/m2 (53), 600 - 208= 392ku/M2 (Tila = Islat (Jula 1544326 (51) B= 1944416 610 kN/m2 Gile 392 +635 1027 KW/m2 480 kolme

We know that 1, = Tij ataw? (ust ) +2e tom (USA) for Clay sal = 0° Ti J3 4 20 20 = 5-63 C - Apprant Colosion of soll in Kalma (- Ti-63 2 CA 4801 154 2 163 kolme CB = Glor igy 2 208 Kolm? 2111 С, 1027-292 = 31%05 Kalma l