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For the 4m tall smooth retaining wall shown below (note the 10 kPa surcharge), calculate the...
For the smooth retaining wall shown below, calculate the short-term thrust that is needed to be considered for design u...
For the smooth retaining wall shown below, calculate the short-term thrust that is needed to be considered for design under passive conditions in kN. The water table is below the base of the wall. Su 20 kPa y 20 kN/m3 6m
For the smooth retaining wall shown below, calculate the short-term thrust that is needed to be considered for design under passive conditions in kN. The water table is below the base of the wall. Su 20 kPa y 20...
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?
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
(a) Determine and draw the lateral pressure distribution (active hydrostatic) acting on the smooth wall shown...
(a) Determine and draw the lateral pressure distribution (active hydrostatic) acting on the smooth wall shown in Figure 2. The water table is at the interface of the soil layers. (8 marks) Soil 1: c'0 kPa, ' 32 y 16 kN/m 2 m 4 m Soil 2: c'-5 kPa, 30° Yet20 kN/m3 Figure 2 (b) In Figure 3 below, the L-shaped area carries a 200 kN/m2 uniform load. Determine the vertical stress increase due to the loading at a depth...
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...
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...
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...
A 12 m high retaining wa is built to retain a 3-layered soil profile shown in...
A 12 m high retaining wa is built to retain a 3-layered soil profile shown in Figure 2. 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. (i) Find the surface surcharge q that would just close the tensile crack on the ground surface at the active failure stage of the retaining wall. (5...
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 =...
The soil conditions adjacent to a sheet pile wall are given in the Figure 2 below,...
The soil conditions adjacent to a sheet pile wall are given in the Figure 2 below, a surcharge pressure of 40 kN/m2 being carried on the surface behind the wall. Draw the active and passive lateral earth pressure diagrams; and determine the active and passive forces acting on 1m length of the wall. The properties of the clay layer: Cohesion: c 10 kN/m2 Shear resistance angle: #25° Unit weight: y-19.5 kN/m3 9-40 kN/m Clay Clay Figure 3 The following may...
For the smooth retaining wall shown below, calculate the short-term thrust that is needed to be considered for design under passive conditions in kN. The water table is below the base of the wall. Su 20 kPa y 20 kN/m3 6m
For the smooth retaining wall shown below, calculate the short-term thrust that is needed to be considered for design under passive conditions in kN. The water table is below the base of the wall. Su 20 kPa y 20...
(a) Determine and draw the lateral pressure distribution (active hydrostatic) acting on the smooth wall shown in Figure 2. The water table is at the interface of the soil layers. (8 marks) Soil 1: c'0 kPa, ' 32 y 16 kN/m 2 m 4 m Soil 2: c'-5 kPa, 30° Yet20 kN/m3 Figure 2 (b) In Figure 3 below, the L-shaped area carries a 200 kN/m2 uniform load. Determine the vertical stress increase due to the loading at a depth...
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...
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...
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...
A 12 m high retaining wa is built to retain a 3-layered soil profile shown in Figure 2. 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. (i) Find the surface surcharge q that would just close the tensile crack on the ground surface at the active failure stage of the retaining wall. (5...
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 =...
The soil conditions adjacent to a sheet pile wall are given in the Figure 2 below, a surcharge pressure of 40 kN/m2 being carried on the surface behind the wall. Draw the active and passive lateral earth pressure diagrams; and determine the active and passive forces acting on 1m length of the wall. The properties of the clay layer: Cohesion: c 10 kN/m2 Shear resistance angle: #25° Unit weight: y-19.5 kN/m3 9-40 kN/m Clay Clay Figure 3 The following may...
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