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solve Question 8. please show steps
[Problems 7-8] A 12 m thick layer of Omaha clay...
1. An 8-m thick normally consolidated clay layer is doubly drained as shown below. (This means...
1. An 8-m thick normally consolidated clay layer is doubly drained as shown below. (This means that a very pervious layer compared to the clay exists on top of and under the clay layer) The embankment applied an average vertical stress increase of 100 kPa to the clay layer. The water table is located at the mid depth of the sand layer. Assume the sand above the water table is dry 0 Pore water pressure, u (kPa) 20 40 60...
7) (Total 20 pts) The figure shows a 20 m thick layer of normally consolidated clay...
7) (Total 20 pts) The figure shows a 20 m thick layer of normally consolidated clay (Y -18.6 kN/m3) that is one-dimensionally loaded by Δσ,-50kPa. The clay layer is below a 3 m thick layer of granular fill (y = 19.6 kN/m3), and a dense, compacted glacial till (impermeable) underlies the clay. The water table is located at the top of the clay layer. A 1-D consolidation test is performed on a 2.20 cm thick, doubly drained specimen from the...
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...
c) A 3 m thick clay layer, free to drain from its upper and lower boundaries,...
c) A 3 m thick clay layer, free to drain from its upper and lower boundaries, has been subjected to a uniform vertical stress increase of 200 kPa. After 1 year the excess pore pressure at the centre of the clay layer is 50 kPa. If the settlement at 1 year is 0.3 m calculate the final settlement of the clay layer.
Geotechnical engineering 2 Q3. A double drained clay layer of 3.5 m thickness is subjected to...
Geotechnical engineering 2
Q3. A double drained clay layer of 3.5 m thickness is subjected to loading that increases the average effective vertical stress from 250 kN/m2 to 390 kN/m2, assuming my 1.7 x 10 m2/kN and Cy-0.75 m2year, determine i. The ultimate consolidation settlement ii. The settlement at the end of 1.5 years, The time in days for 30% consolidation,
help with problems 1 & 2 please and explain Problem 1 A deposit of Swedish clay...
help with problems 1 & 2 please and explain
Problem 1 A deposit of Swedish clay is 15 m thick drained at both top and bottom. The coefficient of consolidation for the clay layer was estimated to be 1 x 10 cm/sec from laboratory test. The ultimate consolidation settlement (Sc) was calculated under the applied load in the field and was found 80 cm. Find the following: a) How long would it take for settlement of 40 cm and 70...
A 10-m depth of sand overlies an 8-m layer of clay, below which is a further...
A 10-m depth of sand overlies an 8-m layer of clay, below which is a further depth of sand. For the clay, my-0.78 m2/MN and c 4.2 m'/year. The water table is at surface level but is to be lowered permanently by 4 m, the initial lowering taking place over a period of 40 weeks. Calculate the final settlement due to consolidation of the clay (one sub-layer assumption), assuming no change in the weight of the sand, and the settlement...
[Problems 1-4] The soil profile at a site for a proposed office building consists of a...
[Problems 1-4] The soil profile at a site for a proposed office building consists of a layer of fine sand 10.4 m thick above a layer of soft, normally consolidated clay 2 m thick. Below the soft clay is a deposit of coarse sand. The groundwater table was observed at 3 m below ground level. The void ratio of the sand is 0.76, and the water content of the clay is 43%. The building will impose a vertical stress increase...
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 ground profile of a construction site consists of a 3 m thick layer of sand...
The ground profile of a construction site consists of a 3 m thick layer of sand followed by a 2 m thick layer of clay lying on impervious bedrock. The watertable is at a depth of 2 m below the ground surface. The sand has a dry unit weight of 16 kN/m and a saturated unit weight of 18 kN/m3. The capillary rise in sand is 0.5 m. The clay has a bulk unit weight of 19 kN/m 1. One...
1. An 8-m thick normally consolidated clay layer is doubly drained as shown below. (This means that a very pervious layer compared to the clay exists on top of and under the clay layer) The embankment applied an average vertical stress increase of 100 kPa to the clay layer. The water table is located at the mid depth of the sand layer. Assume the sand above the water table is dry 0 Pore water pressure, u (kPa) 20 40 60...
7) (Total 20 pts) The figure shows a 20 m thick layer of normally consolidated clay (Y -18.6 kN/m3) that is one-dimensionally loaded by Δσ,-50kPa. The clay layer is below a 3 m thick layer of granular fill (y = 19.6 kN/m3), and a dense, compacted glacial till (impermeable) underlies the clay. The water table is located at the top of the clay layer. A 1-D consolidation test is performed on a 2.20 cm thick, doubly drained specimen from the...
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...
c) A 3 m thick clay layer, free to drain from its upper and lower boundaries, has been subjected to a uniform vertical stress increase of 200 kPa. After 1 year the excess pore pressure at the centre of the clay layer is 50 kPa. If the settlement at 1 year is 0.3 m calculate the final settlement of the clay layer.
Geotechnical engineering 2
Q3. A double drained clay layer of 3.5 m thickness is subjected to loading that increases the average effective vertical stress from 250 kN/m2 to 390 kN/m2, assuming my 1.7 x 10 m2/kN and Cy-0.75 m2year, determine i. The ultimate consolidation settlement ii. The settlement at the end of 1.5 years, The time in days for 30% consolidation,
help with problems 1 & 2 please and explain
Problem 1 A deposit of Swedish clay is 15 m thick drained at both top and bottom. The coefficient of consolidation for the clay layer was estimated to be 1 x 10 cm/sec from laboratory test. The ultimate consolidation settlement (Sc) was calculated under the applied load in the field and was found 80 cm. Find the following: a) How long would it take for settlement of 40 cm and 70...
A 10-m depth of sand overlies an 8-m layer of clay, below which is a further depth of sand. For the clay, my-0.78 m2/MN and c 4.2 m'/year. The water table is at surface level but is to be lowered permanently by 4 m, the initial lowering taking place over a period of 40 weeks. Calculate the final settlement due to consolidation of the clay (one sub-layer assumption), assuming no change in the weight of the sand, and the settlement...
[Problems 1-4] The soil profile at a site for a proposed office building consists of a layer of fine sand 10.4 m thick above a layer of soft, normally consolidated clay 2 m thick. Below the soft clay is a deposit of coarse sand. The groundwater table was observed at 3 m below ground level. The void ratio of the sand is 0.76, and the water content of the clay is 43%. The building will impose a vertical stress increase...
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 ground profile of a construction site consists of a 3 m thick layer of sand followed by a 2 m thick layer of clay lying on impervious bedrock. The watertable is at a depth of 2 m below the ground surface. The sand has a dry unit weight of 16 kN/m and a saturated unit weight of 18 kN/m3. The capillary rise in sand is 0.5 m. The clay has a bulk unit weight of 19 kN/m 1. One...
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