The Stratum of the clay and loading shown in Figure below: Find:
- Consolidation settlement after 2 years of the construction (Cv=0.3 m2/year).
- Time factor at consolidation settlement of 90%.
- Time to reach a 45% consolidation settlement.
- Draw he, hp, and ht distributions
Homework Answers
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The Stratum of the clay and loading shown in Figure below:
Find:
Consolidation settlement after 2...
X1=3000 X2=7 X3=8 X4=6 X5=3 I: The Stratum of the clay and loading shown in Figure...
X1=3000 X2=7 X3=8 X4=6 X5=3
I: The Stratum of the clay and loading shown in Figure below: Find: 1- Consolidation settlement after 2 years of the construction (Cv=0.3 m-/year). 2- Time factor at consolidation settlement of 90%. 3- Time to reach a 45% consolidation settlement. 4- Draw he, hp, and ht distributions. Weight of tankt water + Weight of the columns =X1 KN Tank Columns Fill yu 17 kN/m (x2*X, *1) m Footing 4" Sandy= 18 kN/m', 9= 25 Clay,...
For the soil profile shown below, calculate the final settlement due to the placement of the...
For the soil profile shown below, calculate the final settlement due to the placement of the sand fill. Estimate the excess pore pressure at a depth of 1.5 m into the third clay layer 1.5 years after the fill is placed. Assume the coefficient of consolidation is Cv = 1.8 m2/yr. Fill y = 16.0 kN/m² (3m thick) Clay 1 (3m thick) Sand (0.5m thick) Clay 2 (2m thick) Sand (0.5m thick) Clay 3 (4m thick) Sand (0.5m thick) eo...
The figure below shows a group of pile in clay. Determinate the consolidation settlement of the...
The figure below shows a group of pile in clay. Determinate the consolidation settlement of the group. 1335 IN Sand Groundwatery=15.72 kN/m table Sand Y -18.55 N/m 2.75 m x 2.75 m Group plan Normally consolidated clay 19.18 kNm 08 C=0.8 Normally consolidated clay 2y=18.08 Nm . 1.0 C -0.31 Normally consolidated clay Sy =19.5 kN/m 0.7 C 0.26
The time for 50% consolidation of a 25 mm thick clay specimen (drained at top and bottom) in the laboratory is 1...
The time for 50% consolidation of a 25 mm thick clay specimen (drained at top and bottom) in the laboratory is 150 sec. How long (in days) will it take for a 3 m thick layer of the same clay in the field under the same pressure increment to reach 75% consolidation? There is an impermeable shale layer at the bottom of the clay layer in the field I. 2. Use Figure 1 for the following Compute the vertical effective...
The total settlement for clay being the elastic settlement plus the primary consolidation settlement. 2. A...
The total settlement for clay being the elastic settlement
plus the primary consolidation settlement.
2. A foundation carrying 150 kips needs to be designed in New Jersey (frost depth 3 ft) for a FOS of 3. The founding soil is deep normally consolidated clay deposit with average Su value of 1100 psf, and saturated unit weight of 130 pcf and a moist unit weight of 110 pcf with water table at 3 ft depth. The laboratory tests performed on undisturbed...
please show step by step (also show how to find the vertical stress increase) 18 A...
please show step by step (also show how to find the vertical stress
increase)
18 A new petroleum storage tank is proposed at an oil refinery to be supported by a 20-meter diameter slab foundation at the ground surface. The structure will produce a uniform load of 110 kN/m2 on the entire slab foundation. A subsurface investigation has revealed the shown soil profile. A series of laboratory tests on representative samples obtained from the clay stratum has resulted in the...
Two undisturbed clay samples were taken from the middle of the overconsolidated and normally consolidated clay layers in the soil profile shown. The water table is at the top of the overconsolidated c...
Two undisturbed clay samples were taken from the middle of the
overconsolidated and normally consolidated clay layers in the soil
profile shown. The water table is at the top of the
overconsolidated clay layer. Consolidation tests were carried out
on the two samples and the results are summarized in the table
below. Assume that the bulk, dry, and saturated unit weights of the
sand are 16 kN/m3, 16 kN/m3 and 19
kN/m3, respectively. The specific gravity of the clay
soil...
Question 2 (40% of the total credit) For the rigid strip footing shown in Figure Q2, bearing capa...
Question 2 (40% of the total credit) For the rigid strip footing shown in Figure Q2, bearing capacity failure is t determine the breadth of footing B if the factor of safety agains 3. i. Consider that for both sand and clay Poisson's ratio is 0.33 an Do you think there is a settlement MPa. Calculate the immediate settlement for the footing. problem for this footing if the 3-D consolidation settlement is 10 mm? Discuss yo ur answer. net Pa-...
2. Calculate the immediate settlement expected beneath the center of the flexible footing (2.5m x 5.0m) rested on a sand deposit shown in the figure. The Poisson's ratio of the soil is 0.30 : 1.5...
2. Calculate the immediate settlement expected beneath the center of the flexible footing (2.5m x 5.0m) rested on a sand deposit shown in the figure. The Poisson's ratio of the soil is 0.30 : 1.5 m 4 195 kN/m2 E,(kN/m2) E,- 6000 2.5 m 2 Sand E, 12,000 E, 10.000 Depth (m)
2. Calculate the immediate settlement expected beneath the center of the flexible footing (2.5m x 5.0m) rested on a sand deposit shown in the figure. The Poisson's ratio...
In the figure below, the natural soil profile consists of sand overlying clay overlying sand overlying bedrock. A water...
In the figure below, the natural soil profile consists of sand
overlying clay overlying sand overlying bedrock. A
water table is present 1 m beneath the surface of the natural
ground. If 4 m of consistent fill material (γfill = 15
kN/m3) was placed on top of this soil profile that covered a
large area, determine:
(a) The consolidation settlement of the clay layer (using 4
equal layers in your calculation), and
(b) The time (in days) for this consolidation...
X1=3000 X2=7 X3=8 X4=6 X5=3
I: The Stratum of the clay and loading shown in Figure below: Find: 1- Consolidation settlement after 2 years of the construction (Cv=0.3 m-/year). 2- Time factor at consolidation settlement of 90%. 3- Time to reach a 45% consolidation settlement. 4- Draw he, hp, and ht distributions. Weight of tankt water + Weight of the columns =X1 KN Tank Columns Fill yu 17 kN/m (x2*X, *1) m Footing 4" Sandy= 18 kN/m', 9= 25 Clay,...
For the soil profile shown below, calculate the final settlement due to the placement of the sand fill. Estimate the excess pore pressure at a depth of 1.5 m into the third clay layer 1.5 years after the fill is placed. Assume the coefficient of consolidation is Cv = 1.8 m2/yr. Fill y = 16.0 kN/m² (3m thick) Clay 1 (3m thick) Sand (0.5m thick) Clay 2 (2m thick) Sand (0.5m thick) Clay 3 (4m thick) Sand (0.5m thick) eo...
The figure below shows a group of pile in clay. Determinate the consolidation settlement of the group. 1335 IN Sand Groundwatery=15.72 kN/m table Sand Y -18.55 N/m 2.75 m x 2.75 m Group plan Normally consolidated clay 19.18 kNm 08 C=0.8 Normally consolidated clay 2y=18.08 Nm . 1.0 C -0.31 Normally consolidated clay Sy =19.5 kN/m 0.7 C 0.26
The time for 50% consolidation of a 25 mm thick clay specimen (drained at top and bottom) in the laboratory is 150 sec. How long (in days) will it take for a 3 m thick layer of the same clay in the field under the same pressure increment to reach 75% consolidation? There is an impermeable shale layer at the bottom of the clay layer in the field I. 2. Use Figure 1 for the following Compute the vertical effective...
The total settlement for clay being the elastic settlement
plus the primary consolidation settlement.
2. A foundation carrying 150 kips needs to be designed in New Jersey (frost depth 3 ft) for a FOS of 3. The founding soil is deep normally consolidated clay deposit with average Su value of 1100 psf, and saturated unit weight of 130 pcf and a moist unit weight of 110 pcf with water table at 3 ft depth. The laboratory tests performed on undisturbed...
please show step by step (also show how to find the vertical stress
increase)
18 A new petroleum storage tank is proposed at an oil refinery to be supported by a 20-meter diameter slab foundation at the ground surface. The structure will produce a uniform load of 110 kN/m2 on the entire slab foundation. A subsurface investigation has revealed the shown soil profile. A series of laboratory tests on representative samples obtained from the clay stratum has resulted in the...
Two undisturbed clay samples were taken from the middle of the
overconsolidated and normally consolidated clay layers in the soil
profile shown. The water table is at the top of the
overconsolidated clay layer. Consolidation tests were carried out
on the two samples and the results are summarized in the table
below. Assume that the bulk, dry, and saturated unit weights of the
sand are 16 kN/m3, 16 kN/m3 and 19
kN/m3, respectively. The specific gravity of the clay
soil...
Question 2 (40% of the total credit) For the rigid strip footing shown in Figure Q2, bearing capacity failure is t determine the breadth of footing B if the factor of safety agains 3. i. Consider that for both sand and clay Poisson's ratio is 0.33 an Do you think there is a settlement MPa. Calculate the immediate settlement for the footing. problem for this footing if the 3-D consolidation settlement is 10 mm? Discuss yo ur answer. net Pa-...
2. Calculate the immediate settlement expected beneath the center of the flexible footing (2.5m x 5.0m) rested on a sand deposit shown in the figure. The Poisson's ratio of the soil is 0.30 : 1.5 m 4 195 kN/m2 E,(kN/m2) E,- 6000 2.5 m 2 Sand E, 12,000 E, 10.000 Depth (m)
2. Calculate the immediate settlement expected beneath the center of the flexible footing (2.5m x 5.0m) rested on a sand deposit shown in the figure. The Poisson's ratio...
In the figure below, the natural soil profile consists of sand
overlying clay overlying sand overlying bedrock. A
water table is present 1 m beneath the surface of the natural
ground. If 4 m of consistent fill material (γfill = 15
kN/m3) was placed on top of this soil profile that covered a
large area, determine:
(a) The consolidation settlement of the clay layer (using 4
equal layers in your calculation), and
(b) The time (in days) for this consolidation...
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