)4PÅDSÆkÇxÈÉ{Ê5.\r7 . vaBC9D789:\r;g6 = 2m ,Y y Z g Ë 1.5m ,CMN~?9:YyÌÍÎ%C9B\rÏ &=2. 7 0 ,ÑÒÏe=0. 7 0 ,N~D¿Pg& =0.8, B\rÓgÔÕc= 1 0 k P a,6 = 2 0 ° %\rC 9 B\r ? | Ö "UP“3׸9nÏT%\r8 . qvBAUy = 18.5kN 1 m ', (p =15°, c= 4 6 k P a,Ø?¾D>Ù>U9:[Ú8U\r6=2. 0m ,YZÛ3. 0m ,X9ÚÜÝÞC9\%\r9 . bßà[4 X6m?\rá89:>U>âãvaBC9DU9:YZä =2. 5 m ,C9B\r7 = 18AN/äZ3 , s = 2 0 %Uc = 9 k P a,×åæ9:8ç\rèéUX9ÆkC9\%\r10 . 9:êë[4.0m\rNìU>?rBC9DU9:YZ0=4. 0 m ,rB\ry = IgA N /n?,\r(P = 3 2 ° ,XÆkC9\(í9ÚÜ)%\r11 . î89:êë10m ,>?^ïvBC9DUYZ2m, / = 18kN/m\ (p =18°, c=20 kPa,\r9p\%wxC9ðñòó_ôõö÷U\øð\r12 . ùúûüC9c # 0 ¤0 # 0 ¤ r = 0 , ö÷`ýþÿ 0@P`p?? \rA??r \rI\rA\r1