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Figure 3 A cutting 9 m deep is to be excavated in a saturated clay of...
When attempting to excavate a deep cutting in soft CLAY a failure took place when the...
When attempting to excavate a deep cutting in soft CLAY a
failure took place when the height of the slope reached 10 m. The
cutting has a slope of 1 vertical to 1.5 horizontal. The strata
consisted of 15 m of soft clay, underlain by hard shale. Assuming
that the bulk unit weight of clay is 20 kN/m3.
Q. What is the value of the undrained shear strength,
cu (kPa)
Taylors stability coefficients 0.30 0.261 0.25 D- infinite 0.181 8...
A 6 m deep slope is going to be excavated in a deep soil deposit. The...
A 6 m deep slope is going to be excavated in a deep soil
deposit. The geometry of the slope is shown in
the following figure. Assume. The soil has the following
properties:
t = 20 kN/m3, cu = 20 kPa, = 5o
Water table is well below the toe of the embankment.
(a) Calculate the slope batter angle, , for which slope failure
would occur.
(b) Assume a slope batter angle of ranging from 40o to 60o...
. A long natural slope in fissured overconsolidated clay is inclined to the horizontal with an...
. A long natural slope in fissured overconsolidated clay is inclined to the horizontal with an angle =15 o . The saturated unit weight of clay is 18 kN/m3 . The water table is at the surface and the seepage is roughly parallel to the slope. A slip has developed on a plane parallel to the surface at the depth of 4.0 m. Find the factor of safety along the slip plane, for the following two cases: a. Peak shear...
A 2.0 m wide continuous foundation is placed at 1.5 m depth in a saturated clay...
A 2.0 m wide continuous foundation is placed at 1.5 m depth in a saturated clay where cu=40kN/m^2 and y=18.5 kN/m^3. At 2.0 m below ground level, this clay is underlain by a stiffer clay where cu=60 kN/m^2 and y=19kN/m^3. What would be the maximum wall load allowed with FS=3
A 6 m deep slope is going to be excavated in a deep soil deposit. The geometry of the slope is shown in the following fi...
A 6 m deep slope is going to be excavated in a deep soil
deposit. The geometry of the slope is shown in the following
figure. Assume. The soil has the following
properties:
yt = 19
kN/m3,
cu = 20
kPa,
u = 0o
R = 10
m,
AB = 2 m
Water table is well below the toe of the embankment. Note:
only a is a variable input.
Find the net area and the centroid of this net area...
(iv) A quick undrained (QU) triaxial test was conducted on a fully-saturated soft clay sample. A...
(iv) A quick undrained (QU) triaxial test was conducted on a fully-saturated soft clay sample. A confining stress (03) of 300 kPa and a vertical stress (01) of 450 kPa at failure were recorded. What is the undrained shear strength of the soft clay? (a) 150 kPa 75 kPa 300 kPa 175 kPa (c) (d) (v) With reference to Question 1(iv), if a second sample of the same clay collected at the same depth is subjected to QU test under...
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...
please with clear and simple steps as possible, also write answer all questions ....thank you Q1....
please with clear and simple steps as possible, also write
answer all questions ....thank you
Q1. A load of 630 kN/m is carried on a strip footing 3 m wide at a depth of 1.5 m in a stiff clay with saturated unit weight 21 kN/m, the water table being at ground level Determine the factor of safety with respect to general shear failure (a) whe105 kN/m, and φ,-0°, (b) when c' = 10 kNm, and = 28。 13.0, 3.5]...
soil mechanics Q2)-A - Calculate the shearing strength along plane at 7 m in coarse sand...
soil mechanics
Q2)-A - Calculate the shearing strength along plane at 7 m in coarse sand soil, the ground water table is at depth of 3 m below the surface.the bulk density of soil above the water table is yo =18.9 kN/m and the saturated density below ground water table is 20.5 kN/m². The angle of internal friction of the sand is 32° - 4m GS 3m Yo = 18.9 kN/m2 V GWT Ysat. = 20.5 kN/m2 o = 32°...
The following case study involving a failure in fissured over-consolidated clay slope was reported by Henkel...
The following case study involving a failure in fissured over-consolidated clay slope was reported by Henkel and Skempton in 1954. The failure occurred in 1952 in Jackfield, Shropshire, England. The slope profile is shown in Figure 1. The failure was a translational slide where the average depth to the failure plane was 17 ft. The ground water table was very near or at the surface. The peak strength parameters of the over-consolidated clay are: cohesion, c'= 220 psf and friction...
When attempting to excavate a deep cutting in soft CLAY a
failure took place when the height of the slope reached 10 m. The
cutting has a slope of 1 vertical to 1.5 horizontal. The strata
consisted of 15 m of soft clay, underlain by hard shale. Assuming
that the bulk unit weight of clay is 20 kN/m3.
Q. What is the value of the undrained shear strength,
cu (kPa)
Taylors stability coefficients 0.30 0.261 0.25 D- infinite 0.181 8...
A 6 m deep slope is going to be excavated in a deep soil
deposit. The geometry of the slope is shown in
the following figure. Assume. The soil has the following
properties:
t = 20 kN/m3, cu = 20 kPa, = 5o
Water table is well below the toe of the embankment.
(a) Calculate the slope batter angle, , for which slope failure
would occur.
(b) Assume a slope batter angle of ranging from 40o to 60o...
A 6 m deep slope is going to be excavated in a deep soil
deposit. The geometry of the slope is shown in the following
figure. Assume. The soil has the following
properties:
yt = 19
kN/m3,
cu = 20
kPa,
u = 0o
R = 10
m,
AB = 2 m
Water table is well below the toe of the embankment. Note:
only a is a variable input.
Find the net area and the centroid of this net area...
(iv) A quick undrained (QU) triaxial test was conducted on a fully-saturated soft clay sample. A confining stress (03) of 300 kPa and a vertical stress (01) of 450 kPa at failure were recorded. What is the undrained shear strength of the soft clay? (a) 150 kPa 75 kPa 300 kPa 175 kPa (c) (d) (v) With reference to Question 1(iv), if a second sample of the same clay collected at the same depth is subjected to QU test under...
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...
please with clear and simple steps as possible, also write
answer all questions ....thank you
Q1. A load of 630 kN/m is carried on a strip footing 3 m wide at a depth of 1.5 m in a stiff clay with saturated unit weight 21 kN/m, the water table being at ground level Determine the factor of safety with respect to general shear failure (a) whe105 kN/m, and φ,-0°, (b) when c' = 10 kNm, and = 28。 13.0, 3.5]...
soil mechanics
Q2)-A - Calculate the shearing strength along plane at 7 m in coarse sand soil, the ground water table is at depth of 3 m below the surface.the bulk density of soil above the water table is yo =18.9 kN/m and the saturated density below ground water table is 20.5 kN/m². The angle of internal friction of the sand is 32° - 4m GS 3m Yo = 18.9 kN/m2 V GWT Ysat. = 20.5 kN/m2 o = 32°...
The following case study involving a failure in fissured over-consolidated clay slope was reported by Henkel and Skempton in 1954. The failure occurred in 1952 in Jackfield, Shropshire, England. The slope profile is shown in Figure 1. The failure was a translational slide where the average depth to the failure plane was 17 ft. The ground water table was very near or at the surface. The peak strength parameters of the over-consolidated clay are: cohesion, c'= 220 psf and friction...
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