Question

B. L q=boopsf t t t t t t I dd L MAX Layer 1 0230 sa plz . 8212opef 207 Layera Ø=36° 8=812 8212op of @) Fig 1) par Kalian----- che Layer 1 Paz Idzah Layer ? K Paskan i Par Crory Pan Pad - Il - - - - . - - - Effective Stress - Porewater shown NOTE: Only case is Ca. Active

Answer 1

9= 600psf. tuu vu juu Layer 1 1 9 = 30° ļo $= %= 150 Layers: 4 = 36° ,8=9% = 18 8=12opf Since backfill is horizontal B=0 and face exposed to backfill is vertical 0=0 - Angle of wall friction s is given. For Layer 1, active pressure coefficient - according to coloumb is Kai = r Seco cos (9-0) ? (v Cosc@+8)+ Sin (Q+8) Sim 6-8) | cos (B-o) Where: 0 =0 Q=30° 6= P = 150 Bro

Seco x cos(30-0) rcos (0+15) + sin (30+15) Sin (30-0) V cos(0-0) Sen na 20 72 Kai = i cosis + r sin 45x Six 30 , Kai = rlx 0.866 7 110.9659 +10:354) | Kai = 0.3013 Layer 2: kaz= r seco cos (9-0) ² I cos (O+6) + Sin (Q+8) Sin (Q-B) Where: O=0, B=0,0 = 36° =10° Kaz=( seco cos (36-0) cosco+18) + Sim ( 36+18) sin(36-0)| Cosco-o)

Ка 1 x C 36 d cost 8 t I sin su sim 36 C50 Ка, а со 809 Co-42S2 +о684 6 Ј | К4, о - 236