Question

There is a wall subjocted to a O poll eyatom es ahou In FigurG 1. The proparles of Soll layer as belows: -50 N Sal 1: Cahesion: C=0 KNm Shear resistance angle: +30 Weight density: y,-18.5 KNm Sol 1 Sal 2 Cohesion: C=12 KNim Shear resistance angle:24 Soil 1 Weight density: ya20.5 kN/m Following the problem to solve questions 1 to 8 Soll 2 Sail 2 Figure 1 Question 1 Determine the maximum active lateral earth pressure (p, ) acting on the wall et the base of Sol 1 (z-6m). Question 2 Determine the active lateral earth pressure (Pa) acting on the wall at the base of Soil 2 (ze8 5m) Question 3 Determine the total active thrust force (P.) Question 4 Determine the maximum passive lateral earth pressure acting on the wall at the base of Soil 1 (z2m) Question 5 Determine the passive laberal earth pressune acting on the wall at the base of Soil 2 (z-4.5m) Question 6 Determine the total passive thrust force (P,)

Answer 1

V= 50 kNm2 A A 16. Soil1 185km Soil1 53.6子 52 35 7-L8 5m Soi2 c2= 12kNm20-24 20.5kNm2 Sol2 .5m C. C. 63.63 kNIn aX2.5 138-94 Active easth preiua at a distanca žfrom tof Paka Jka ha(0-52+50) -Sing0 I+sing ka Pa at zo Pa16.67 kN/m Pa at z- 6m Ar1 a 7 + 6.167 X6 = 53.67 kn}m2- Achive Canth brosbura Pare nuwodeh prssusa Ka - sin24 Pa ka 0.422 sin24 Pa Lo-15-J-81)X 18:5x 0.422 x 12x 0.42.2 46.81 t2. - 15-53 +4.51% Pa = 52-35+4-5|以 Pa = 52.35 52.354.5tx 2.5 Pa = Pa 63.63 kn Im キ&453 at x.5 Ars 2

Active eauth pussusa ferca Pa Pa,Pa2 Ans3 52.35+ 3-63) x .5 08S TPa = 36665klm Passive eath pas u in Aoifj .j 3 Kp ka 1 55.5% 55.SX2 I kmim Passive eaijh prasura in soil 2 kp+Sin (24) -Sin 24) * 2+ (25-9.91) X A ) 3( 8.5 7.69 20.st at to 87.69 kN/m 2 87.63 .5X &.5 at t.S Pp=138.9y kr/m2 fassive earh pres uraferea . 87.63t138 9)x x(0+1)x 2 A 6 11 283.29 391. 2 NIm 2- Pavive or ca