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9. (10 points) A consolidation test performed on a sample from -depth of the clay layer...
For the proposed fill shown assume the ultimate consolidation settlement of the soft clay layer is...
For the proposed fill shown assume the ultimate consolidation
settlement of the soft clay layer is 1.6 ft. The owner wants to
build a structure on top of the fill. The structure can withstand a
total settlement of 4 in. How long must the owner wait after
placement of the fill before building the structure on top of the
fill? Use the simplified method. Assume all consolidation occurs in
the soft clay layer.
Proposed fill 120 lb/t 20ft Silty sand...
The singly-drained clay layer has a coefficient of consolidation of 20 ft2 lyr. The layer is...
The singly-drained clay layer has a coefficient of consolidation of 20 ft2 lyr. The layer is subjected to a uniform vertical stress increase of 100 kPa. Determine the value of the excess pore pressure at point A 2 years after the application of the load. Also given is the chart giving the local degree of consolidation. Sand 15' A 26 Clay bedrock (impermeable) 0 0.06 Clay bedrock (impermeable) 0 11 -0.05 ماده E0.848 E0.90 1 13 2 0 0.1 0.2...
A clay layer is sandwiched between two dra oefficient of consolidation of 35 ft/year, determine the...
A clay layer is sandwiched between two dra oefficient of consolidation of 35 ft/year, determine the following: inable sandy layers as shown below, for A) Time required for the clay layer to reach 75% of primary consolidation. B) If the third layer is switched with an impermeable layer (bedrock). calculate the time required to reach 75% of primary consolidation. C) Based on the results in parts A and B, explain the effect of boundary conditions on the time rate of...
A laboratory consolidation test was performed on a specimen from the middle of the clay layer...
A laboratory consolidation test was performed on a specimen from the middle of the clay layer shown below, with the test results tabulated below. Determine pc, OCR, Cr field, and Ce field; include plots and supporting calculations. Pay attention to the units of stress ks Q-50 kips/ft 0.25 0.8869 0.5 0.8848 10.8768 2 0.8637 4 0.8364 80.7767 16 0.6796 80.6857 4 0.6948 2 0.7070 10.7212 0.7161 0.7079 0.6970 16 0.6600 0.5331 64 0.3766 B- 10 ft Sand oat-120 PC 10...
A laboratory consolidation test was performed on a specimen from the middle of the clay layer...
A laboratory consolidation test was performed on a specimen from the middle of the clay layer shown below, with the test results tabulated below. Determine pc, OCR, Cr field, and Ce field; include plots and supporting calculations. Pay attention to the units of stress ks Q-50 kips/ft 0.25 0.8869 0.5 0.8848 10.8768 2 0.8637 4 0.8364 80.7767 16 0.6796 80.6857 4 0.6948 2 0.7070 10.7212 0.7161 0.7079 0.6970 16 0.6600 0.5331 64 0.3766 B- 10 ft Sand oat-120 PC 10...
soil mechanics Q1) An oedometer test was performed on a 2 cm thick clay sample drained...
soil mechanics
Q1) An oedometer test was performed on a 2 cm thick clay sample drained on both sides taken from the mid clay layer shown below, after 10 minutes 50% consolidation is reached. a) How long time in days would the same degree of consolidation(50%) be reached in the field ? b) How much the final settlement would be reached in the clay layer.? c) How much the preconsolidation pressure of a specimen. ? Sm 2m Sand surcharge y...
QO vreme (b/n) (6) 3. A 40 ft layer of silty clay is overlain by 5ft...
QO vreme (b/n) (6) 3. A 40 ft layer of silty clay is overlain by 5ft of 1000 2000 3000 4000 sand. The base of the clay layer lies over an impervious siltstone bedrock. Water table is at ground surface and is hydrostatic in the clay layer. The initial vertical effective stress do'and maximum past pressure profiles with depth are plotted in the Figure to the right. Initial void ratio e, -0.95. One- dimensional consolidation test results yielded the following:...
A laboratory consolidation test was performed on a specimen from the middle of the clay layer...
A laboratory consolidation test was performed on a specimen from the middle of the clay layer shown below, with the test results tabulated below. Determine pc, OCR, Cr field, and Ce field; include plots and supporting calculations. Pay attention to the units of stress ks Q-50 kips/ft 0.25 0.8869 0.5 0.8848 10.8768 2 0.8637 4 0.8364 80.7767 16 0.6796 80.6857 4 0.6948 2 0.7070 10.7212 0.7161 0.7079 0.6970 16 0.6600 0.5331 64 0.3766 B- 10 ft Sand oat-120 PC 10...
geotechnical engineering The soil profile at a site consists of a clay layer 10 m thick,...
geotechnical engineering
The soil profile at a site consists of a clay layer 10 m thick, sandwich between two sand layers. The top sand layer has a density of 1.9 Mg/m² and is 5 m thick. Below this layer is a 10 m thick clay layer with a saturated density of 1.8 Mg/m' and a saturated water content 42%. The deeper sand layer has a saturated density of 1.9 Mg/m² and extend to the depth investigated at the site. 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...
For the proposed fill shown assume the ultimate consolidation
settlement of the soft clay layer is 1.6 ft. The owner wants to
build a structure on top of the fill. The structure can withstand a
total settlement of 4 in. How long must the owner wait after
placement of the fill before building the structure on top of the
fill? Use the simplified method. Assume all consolidation occurs in
the soft clay layer.
Proposed fill 120 lb/t 20ft Silty sand...
The singly-drained clay layer has a coefficient of consolidation of 20 ft2 lyr. The layer is subjected to a uniform vertical stress increase of 100 kPa. Determine the value of the excess pore pressure at point A 2 years after the application of the load. Also given is the chart giving the local degree of consolidation. Sand 15' A 26 Clay bedrock (impermeable) 0 0.06 Clay bedrock (impermeable) 0 11 -0.05 ماده E0.848 E0.90 1 13 2 0 0.1 0.2...
A clay layer is sandwiched between two dra oefficient of consolidation of 35 ft/year, determine the following: inable sandy layers as shown below, for A) Time required for the clay layer to reach 75% of primary consolidation. B) If the third layer is switched with an impermeable layer (bedrock). calculate the time required to reach 75% of primary consolidation. C) Based on the results in parts A and B, explain the effect of boundary conditions on the time rate of...
A laboratory consolidation test was performed on a specimen from the middle of the clay layer shown below, with the test results tabulated below. Determine pc, OCR, Cr field, and Ce field; include plots and supporting calculations. Pay attention to the units of stress ks Q-50 kips/ft 0.25 0.8869 0.5 0.8848 10.8768 2 0.8637 4 0.8364 80.7767 16 0.6796 80.6857 4 0.6948 2 0.7070 10.7212 0.7161 0.7079 0.6970 16 0.6600 0.5331 64 0.3766 B- 10 ft Sand oat-120 PC 10...
A laboratory consolidation test was performed on a specimen from the middle of the clay layer shown below, with the test results tabulated below. Determine pc, OCR, Cr field, and Ce field; include plots and supporting calculations. Pay attention to the units of stress ks Q-50 kips/ft 0.25 0.8869 0.5 0.8848 10.8768 2 0.8637 4 0.8364 80.7767 16 0.6796 80.6857 4 0.6948 2 0.7070 10.7212 0.7161 0.7079 0.6970 16 0.6600 0.5331 64 0.3766 B- 10 ft Sand oat-120 PC 10...
soil mechanics
Q1) An oedometer test was performed on a 2 cm thick clay sample drained on both sides taken from the mid clay layer shown below, after 10 minutes 50% consolidation is reached. a) How long time in days would the same degree of consolidation(50%) be reached in the field ? b) How much the final settlement would be reached in the clay layer.? c) How much the preconsolidation pressure of a specimen. ? Sm 2m Sand surcharge y...
QO vreme (b/n) (6) 3. A 40 ft layer of silty clay is overlain by 5ft of 1000 2000 3000 4000 sand. The base of the clay layer lies over an impervious siltstone bedrock. Water table is at ground surface and is hydrostatic in the clay layer. The initial vertical effective stress do'and maximum past pressure profiles with depth are plotted in the Figure to the right. Initial void ratio e, -0.95. One- dimensional consolidation test results yielded the following:...
A laboratory consolidation test was performed on a specimen from the middle of the clay layer shown below, with the test results tabulated below. Determine pc, OCR, Cr field, and Ce field; include plots and supporting calculations. Pay attention to the units of stress ks Q-50 kips/ft 0.25 0.8869 0.5 0.8848 10.8768 2 0.8637 4 0.8364 80.7767 16 0.6796 80.6857 4 0.6948 2 0.7070 10.7212 0.7161 0.7079 0.6970 16 0.6600 0.5331 64 0.3766 B- 10 ft Sand oat-120 PC 10...
geotechnical engineering
The soil profile at a site consists of a clay layer 10 m thick, sandwich between two sand layers. The top sand layer has a density of 1.9 Mg/m² and is 5 m thick. Below this layer is a 10 m thick clay layer with a saturated density of 1.8 Mg/m' and a saturated water content 42%. The deeper sand layer has a saturated density of 1.9 Mg/m² and extend to the depth investigated at the site. 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...
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