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1. Assume that the retaining wall in the figure can vield sufficiently. Plot the distribution...
(Figure I) 2. For the problem illustrated in Figure 1, determine the depth of tension crack for the following conditions. a) Wall does not move with respect to the backfill. b) At the momen...
(Figure I) 2. For the problem illustrated in Figure 1, determine the depth of tension crack for the following conditions. a) Wall does not move with respect to the backfill. b) At the moment of shear failure initiation in the backfill when the wall moves away from the soil. c) At the moment of initiation of shear failure when the wall is pushed to move into the backfill q-10 kPa Ysat = 20 kN / m? 2 m yat-18 kN/m...
(1) Assume that the retaining wall shown in Fig. 1 can yield sufficiently to develop an...
(1) Assume that the retaining wall shown in Fig. 1 can yield sufficiently to develop an active state. Determine the Rankine active force per unit length of the wall and the location of the resultant line of action. Given: 9 = 15 kN/mʻ, Hi = 3m, H2 = 6m, y1=19 kN/m, 61 = 28°, C'=0, Y 2 = y s =22 kN/m², 62 = 34°, ca'= 0.( 40%) Groundwater table H2 Fig. I
1. A retaining wall of height 7 m retains soil having an unsurcharged horizontal surface. The...
1. A retaining wall of height 7 m retains soil having an unsurcharged horizontal surface. The soil properties are c' = 0, Ⓡ' = 32, y = 18 kN/m3 and Ysat= 20 kN/m3. i. ii. Determine the distribution of horizontal stresses on the wall and the magnitude of resultant thrust when water table is at 3 m below the ground surface Determine the magnitude of resultant thrust when the water table is well below the base of the wall Determine...
Figure 1.1, below, shows a proposed concrete cantilever retaining wall Assess the stability of the wall...
Figure 1.1, below, shows a proposed concrete cantilever retaining wall Assess the stability of the wall assuming that u 0.45, Yconc. =24 kN/m8, the maximum (i) allowable bearing pressure for the sand is 200 kPa, and the wall rotates about point O. (18 marks) (ii) f the proposed wall does not satisfy the design criteria, list 4 options that might be employed to improve the wall's stability. (2 marks) 1 2. 3. 4. 300 mm с, — 20 kPa =...
17.7 A reinforced earth retaining wall (Figure 17.35) is to be 10 m high. Here, Backfill:...
17.7 A reinforced earth retaining wall (Figure 17.35) is to be 10 m high. Here, Backfill: unit weight, Y = 16 kN/m and soil fric- tion angle, $i = 34° Reinforcement: vertical spacing, Sy = 1 m; horizontal spacing, Sy = 1.25 m; width of rein- forcement = 120 mm; f = 260 MN/m²; 0,= 25°; factor of safety against tie pullout = 3; and factor of safety against tie breaking = 3 Determine: a. The required thickness of ties...
Question 3 125-Points Assume that the retaining wall shown in the figure below can yield suffieiently...
Question 3 125-Points Assume that the retaining wall shown in the figure below can yield suffieiently to develop an active state. Determine the Rankine active force per unit length of the wall and the Jocation of the resultant line of action, y-16.5 kN/m de'm 30 2.5 m Ground water table Yeat= 19.3 kN/m '30° c'0 2.5 m (a) Question 4 I 25-Points and ie -hown in the figure below, Assume
Question 3 125-Points Assume that the retaining wall shown in...
QUESTION 3 (40 Points) A concrete cantilever retaining wall is shown in the figure below. Using...
QUESTION 3 (40 Points) A concrete cantilever retaining wall is shown in the figure below. Using Rankine's Theory for the earth pressures, check stability against overturning and sliding. CLEARLY STATE THE REASONS FOR ANY ASSUMPTIONS YOU MAY MAKE. →lak Ground level I=I =//= y = ? 0 = ? c=0 Unit weightconcrete =24kN/m Pp=0 | 7 m 721211 Pick your own input data for the variables a, b,d,e, f such that a<f and that all the dimensions will make sense...
A retaining wall is to be constructed in a normally consolidated clayey sand deposit in the...
A retaining wall is to be constructed in a normally consolidated clayey sand deposit in the figure below. Ground water table is lmbelow the bottom of the excavation. A 20 kN/m2 surcharge pressure is applied over a wide area at the ground surface. Assume the wall moves into the excavation. Consider long-tem analysis (as it is usually the more critical analysis in excavation problems). Ignore capillarity as shown 20 kPa Clayey sand T17 kNm Y-20 kNm 5 m c'-10 kPa...
(Figure I) 2. For the problem illustrated in Figure 1, determine the depth of tension crack for the following conditions. a) Wall does not move with respect to the backfill. b) At the moment of shear failure initiation in the backfill when the wall moves away from the soil. c) At the moment of initiation of shear failure when the wall is pushed to move into the backfill q-10 kPa Ysat = 20 kN / m? 2 m yat-18 kN/m...
(1) Assume that the retaining wall shown in Fig. 1 can yield sufficiently to develop an active state. Determine the Rankine active force per unit length of the wall and the location of the resultant line of action. Given: 9 = 15 kN/mʻ, Hi = 3m, H2 = 6m, y1=19 kN/m, 61 = 28°, C'=0, Y 2 = y s =22 kN/m², 62 = 34°, ca'= 0.( 40%) Groundwater table H2 Fig. I
1. A retaining wall of height 7 m retains soil having an unsurcharged horizontal surface. The soil properties are c' = 0, Ⓡ' = 32, y = 18 kN/m3 and Ysat= 20 kN/m3. i. ii. Determine the distribution of horizontal stresses on the wall and the magnitude of resultant thrust when water table is at 3 m below the ground surface Determine the magnitude of resultant thrust when the water table is well below the base of the wall Determine...
Figure 1.1, below, shows a proposed concrete cantilever retaining wall Assess the stability of the wall assuming that u 0.45, Yconc. =24 kN/m8, the maximum (i) allowable bearing pressure for the sand is 200 kPa, and the wall rotates about point O. (18 marks) (ii) f the proposed wall does not satisfy the design criteria, list 4 options that might be employed to improve the wall's stability. (2 marks) 1 2. 3. 4. 300 mm с, — 20 kPa =...
17.7 A reinforced earth retaining wall (Figure 17.35) is to be 10 m high. Here, Backfill: unit weight, Y = 16 kN/m and soil fric- tion angle, $i = 34° Reinforcement: vertical spacing, Sy = 1 m; horizontal spacing, Sy = 1.25 m; width of rein- forcement = 120 mm; f = 260 MN/m²; 0,= 25°; factor of safety against tie pullout = 3; and factor of safety against tie breaking = 3 Determine: a. The required thickness of ties...
Question 3 125-Points Assume that the retaining wall shown in the figure below can yield suffieiently to develop an active state. Determine the Rankine active force per unit length of the wall and the Jocation of the resultant line of action, y-16.5 kN/m de'm 30 2.5 m Ground water table Yeat= 19.3 kN/m '30° c'0 2.5 m (a) Question 4 I 25-Points and ie -hown in the figure below, Assume
Question 3 125-Points Assume that the retaining wall shown in...
QUESTION 3 (40 Points) A concrete cantilever retaining wall is shown in the figure below. Using Rankine's Theory for the earth pressures, check stability against overturning and sliding. CLEARLY STATE THE REASONS FOR ANY ASSUMPTIONS YOU MAY MAKE. →lak Ground level I=I =//= y = ? 0 = ? c=0 Unit weightconcrete =24kN/m Pp=0 | 7 m 721211 Pick your own input data for the variables a, b,d,e, f such that a<f and that all the dimensions will make sense...
A retaining wall is to be constructed in a normally consolidated clayey sand deposit in the figure below. Ground water table is lmbelow the bottom of the excavation. A 20 kN/m2 surcharge pressure is applied over a wide area at the ground surface. Assume the wall moves into the excavation. Consider long-tem analysis (as it is usually the more critical analysis in excavation problems). Ignore capillarity as shown 20 kPa Clayey sand T17 kNm Y-20 kNm 5 m c'-10 kPa...
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