This SPECIAL ASSIGNMENT comprises of 16 questions, grouped under 4 (four) categories, A, B, C and D. You are required to answer SEVEN (7) QUESTIONS in all. Answer 2 Questions Each from Categories A & B Answer ONLY 1 Question from Category C Answer 2 Questions Each from Category D NOTE: For QUESTIONS from Groups A - C, (a) Determine the Active Earth Pressure at i. the surface, ii. interface/interfaces and iii. the base of the cuts. (b) Draw the pressure distribution and (c) Determine the Total Active pressure and its line of Action. NOTE: For QUESTIONS from Groups D, (a) Determine the Total Active Earth pressure against the walls and (b) calculate the factor of Safety against (i) sliding and (iii) overturning. The unit weight of concrete to be 24.5kNm*. The angle friction between the concrete and the foundation soil to be 26 STARTING FROM TUESDAY, 9TH AUGUST, 2022 SUBMIT YOUR SOLUTION TO A QUESTION EACH ON EACH DAY. DEADLINE FOR EACH DAY IS 8pm. 4.0m A 6.5m 2.5m Y=17.5kN/m =35* QUESTION A1 B QUESTION B1 2.5m 1.5m 2.5m Y 18kN/m -30 c=15kN/m 7=21kN/m' 32 c=10kN/m B C Layer 1 Layer 2 Y = 19.5kN/m = 30 c = 5kN/m Y = 18kN/m = 30 y = 17.5kN/m =33* Layer 1 Layer 2 ayer 3 5.5m QUESTION AZ 2.5m 4.0m 2.5m QUESTION B2 1.5m T B 2.5m B D 15 Y = 18kN/m 21kN/m 6=35" 7-17.5kN/m -30 7-18kN/m 7-21kN/m -35 Y = 17.5kN/m 6-30" y=19kN/m 6-32 7=21kN/m 6=32" Layer 1 Layer 2 Layer 1 Layer 2 Layer 3 5.5m QUESTION A3 4.0m 2.5m QUESTION B3 2.5m 13 1.5m 2.5m B C D q=15kN/m y=19kN/m -32 c=15kN/m Y-18kN/m 6=35" c=15kN/m y=17.5kN/m -30 Y-19.5kN/m -30 y = 18kN/m -30 Y=17.5kN/m 6-33 Layer 1 Layer 2 Loyer 1 Layer 2 Layer 3