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For the smooth retaining wall shown below, calculate the short-term thrust that is needed to be considered for design u...
For the 4m tall smooth retaining wall shown below (note the 10 kPa surcharge), calculate the...
For the 4m tall smooth retaining wall shown below (note the 10 kPa surcharge), calculate the passive thrust acting on the wall in kN. The water table is below the bottom of the wall 10 kPa T1TITTTTTI c' 8 kPa p' 26° y 15 kN/m3 4m
Calculate the magnitude and position (above the wall base) of the resultant active thrust denoted Pa....
Calculate the magnitude and position (above the wall base) of the resultant active thrust denoted Pa. Wall has a smooth vertical back and supports a 12m depth of soil Surface horizontal: uniform surcharge q= 24 kPa, single layer. Water table at the top surface c' =0. Φ'=32 degrees γsat =20 kN/m3
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 =...
qs=90 1. Assume that the retaining wall in the figure can vield sufficiently. Plot the distribution...
qs=90
1. Assume that the retaining wall in the figure can vield sufficiently. Plot the distribution of pressure acting on the wall surface, as shown in Figure below. Calculate the total thrust on the wall and determine its point of application. Friction between retaining wall and backfill is neglected. I will be assigned according to the last two digits of the student number. (eng. student number 650170090, will assign a:=90 kPa). q= .... kPa y= 16 EN/m 3 m C=0...
A 4m high, vertical retaining wall supports Silty SAND backfill with a horizontal surface. There is...
A 4m high, vertical retaining wall supports Silty SAND backfill with a horizontal surface. There is a hydrostatic horizontal water table at 1 m below the ground surface. The soil has bulk unit weight = 20 kN/m3, effective cohesion=5 kPa, and friction angle= 30o. What is the value of the water force on the wall? At what distance above the base of the wall does it act?
A retaining wall with a smooth vertical back has to retain a backfill of cohesionless soil...
A retaining wall with a smooth vertical back has to retain a backfill of cohesionless soil upto a height f St above ground level. The.coil has a void ratio of 0.83 and the specific gravity of soil solids is 2.68.The water table is located at a depth of 2m below the top of the backfill. The soil above the water table is 20% saturated. The angle of internal friction of the soil above and below water table is 32 and...
Due to continuous rainfall the clay has turned saturated. (a) Check the short term stability of...
Due to continuous rainfall the clay has turned saturated. (a) Check the short term stability of the wall against forward sliding. (b) Check the long term stability of the wall against forward sliding. Assume reasonable water pore pressure distribution. Assume the soil shear strength in the passive zone is mobilized by 50%. 2 m Saturated clay: y = 20 kN/m y=24 kN/m3 Cu = 40 kPa, Cw = 40 kPa 10 m % = 30º = 22.5 1 m Drain...
Question 2 (a) A 4 m high masonry retaining wall of width 1.8 is built to...
Question 2 (a) A 4 m high masonry retaining wall of width 1.8 is built to retain a 2-layered soil profile shown in Figure 2 on Bonham Road on Hong Kong Island with a surface sucharge of 20 kPa. The soil parameters are given in the figure. During raining season, ground water rises to interface between Soil 1 and Soil 2. Assume that there is no friction between the vertical wall and the soils. The sliding friction angle between the...
For the external stability analysis of the reinforced carth wall shown (30 pts) 1. Determine the eccentricity of the...
For the external stability analysis of the reinforced carth wall shown (30 pts) 1. Determine the eccentricity of the resultant of the external etermine the maximu along the base? (5 pts) i11. Calculate the factor below, m and minimum pressures at the base. Will tension develop anywhere of safety against sliding at the base. Is it acceptable? (10 pts) iv. Is the design stable from bearing failure at the base? (010 pts) State any assumptions, if made. 15 kN/m2 Ground...
For the 4m tall smooth retaining wall shown below (note the 10 kPa surcharge), calculate the passive thrust acting on the wall in kN. The water table is below the bottom of the wall 10 kPa T1TITTTTTI c' 8 kPa p' 26° y 15 kN/m3 4m
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 =...
qs=90
1. Assume that the retaining wall in the figure can vield sufficiently. Plot the distribution of pressure acting on the wall surface, as shown in Figure below. Calculate the total thrust on the wall and determine its point of application. Friction between retaining wall and backfill is neglected. I will be assigned according to the last two digits of the student number. (eng. student number 650170090, will assign a:=90 kPa). q= .... kPa y= 16 EN/m 3 m C=0...
A retaining wall with a smooth vertical back has to retain a backfill of cohesionless soil upto a height f St above ground level. The.coil has a void ratio of 0.83 and the specific gravity of soil solids is 2.68.The water table is located at a depth of 2m below the top of the backfill. The soil above the water table is 20% saturated. The angle of internal friction of the soil above and below water table is 32 and...
Due to continuous rainfall the clay has turned saturated. (a) Check the short term stability of the wall against forward sliding. (b) Check the long term stability of the wall against forward sliding. Assume reasonable water pore pressure distribution. Assume the soil shear strength in the passive zone is mobilized by 50%. 2 m Saturated clay: y = 20 kN/m y=24 kN/m3 Cu = 40 kPa, Cw = 40 kPa 10 m % = 30º = 22.5 1 m Drain...
Question 2 (a) A 4 m high masonry retaining wall of width 1.8 is built to retain a 2-layered soil profile shown in Figure 2 on Bonham Road on Hong Kong Island with a surface sucharge of 20 kPa. The soil parameters are given in the figure. During raining season, ground water rises to interface between Soil 1 and Soil 2. Assume that there is no friction between the vertical wall and the soils. The sliding friction angle between the...
For the external stability analysis of the reinforced carth wall shown (30 pts) 1. Determine the eccentricity of the resultant of the external etermine the maximu along the base? (5 pts) i11. Calculate the factor below, m and minimum pressures at the base. Will tension develop anywhere of safety against sliding at the base. Is it acceptable? (10 pts) iv. Is the design stable from bearing failure at the base? (010 pts) State any assumptions, if made. 15 kN/m2 Ground...
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