Problem 7: The soil profile at the site consists of 5.0 m of silty sand underlain by 13 m of clay. The groundwater table is at a depth of 2.8 m below the ground surface. The silty sand has a unit weight of 19 kN/m3 above the groundwater table and 20 kN/m³ below. The clay has a unit weight of 15.7 kN/m³. Determine the depth of groundwater table from the ground surface to have an average effective stress at the clay layer of 100 kPa?

Q: coefficienct of permeability, in cm/sec, round off to 7

A: Given data- Hydraulic coefficients K1 = 2 × 10-⁴ cm/s K2 = 3.2 × 10-² cm/s K3 = 4.1 ×10-⁵ cm/s…

Q: A structure is built on a normally consolidated clay of thickness of H(m), where H is the last digit…

A: Given: H = 10m Natural moisture content of clay = 45% Liquid limit of clay = 50% Depth of sand layer…

Q: 1. Water content of soil is 0.15, Degree of saturation 70%, void ratio is 0.61, then specific…

A:

Q: From a soil reservoir where the groundwater level is at the surface, a sample is taken at a depth of…

A:

Q: A silty sand fill 4.5 meters thick and an estimated density of 20 kN/m³ is to be placed over 4.0 m…

A: eo = 1.255Cc = 0.29Cr = 0.035Cv = 0.79 m2/yrNOTE : As per guidelines, first 3 parts are solved.…

Q: 45 A constant-head permeability test was conducted on a soil specimen under a hydraulic gradient of…

A: Given data- A constant head permeability test- Hydraulic gradient- i=2.5, Specific gravity G=2.65,…

Q: 1. A 76.6% saturated soil has a moisture content of 38.4% and a specific gravity of 2.683. Find the…

A: Given data : The value of moisture content w=38.4100=0.384 The value of specific gravity G=2.683 The…

Q: The profile at a site consists of 5m of sand overlying 10m of compressible clay, which in turn…

A: The excess pore water pressure is developed in the clay layer by immediately placing the surcharge…

Q: What is the equivalent coefficient of permeability (k) for all soil layers? where equivalent k(2 and…

A: Given data K2=K3= 4.95K1 K4= 4.69K1 K2 & K3 are parallel to the flow line

Q: A silty sand fill 4.5 meters thick and an estimated density of 20 kN/m³ is to be placed over 4.0 m…

A: Cv = 0.79 m2/yr = 20 kN/m3

Q: Given Well graded sand Specific gravity of soil = 2.65 %3D Void ratio = 0.57 %3D Porosity = 36.5%…

A: Given Data:   Well graded sand  G=2.65 e=0.57 n=0.365

Q: A 3m deep sand layer has a specific gravity of 2.68 and a void ratio of 0.60. Under this layer is a…

A: step 1-

Q: 6.5 A site is underlain by about 14 m of hydraulic fill sand with the following properties. Grain…

A: Given data:- Saturated unit weight = 18.8 kN/m3 Average uncorrected SPT resistance, N = 6 blows/ft.…

Q: The first layer 2m thick very fine wet sand with silt having water content of 8% and S=45% lying in…

A:

Q: The surface of a saturated clay deposit is located permanently below the groundwater table. The clay…

A: Given: The clay has natural water content = 43 % Specific gravity = 2.70 The vertical intergranular…

Q: 25. Degree of saturation of a natural soil deposit having water content 15%, specific gravity 2.50…

A: given- water contentw=15%specific gravity G=2.50void ratio e=0.5

Q: e, the organic silt is preconsolidated by rapidly lowering the w e ground surface) and…

A:

Q: A normally consolidated clay sample is subjected to a tri-axial test where pore water measurements…

A: We have to find the value of pore water pressure u in kpa.

Q: 1. (30 pts) The soil profile shown below consists of 10 meters of sandy silt overlying gravel. The…

A: Step 1:Step 2: Step 3: Step 4:

Q: Instruction

A:

Q: Problem D The critical hydraulic gradient for a soil sample is equal to 1.18. If the specific…

A:

Q: In a place, before the construction, CPT test was applied, the sand CPT Data is presented in Table…

A:

Q: kN/m³ and 33%, respectively. Determine the specific gravity of the soil solids (Gs) a the field void…

A: This question is from Geo technical engineering

Q: Consider the soil profile shown in the figure below, and an initial groundwater depth of 5 feet…

A: The values and diagram given in the question are as follows: Initial groundwater depth=5 ft (below…

Q: The wet density of a sample of sand found at a site is 1.85 Mg/cubic meter with a water content of…

A:

Q: A 3 meter thick fill was placed over a 9 meter thick compressible clay. Underlying the clay layer is…

A: Thickness of fill = 3 mUnderlying the clay layer is a very hard impermeable clay.The diameter of the…

Q: The Natural ground water table at a site is located at a depth of 2 m below the ground level.…

A:

Q: a. Plot P0 and P1 readings with depth in one plot and show the groundwater table.b. Calculate the…

A: a. Plot P0 and P1 readings with depth in one plot and show the groundwater table.b. Calculate the…

Q: At a planned construction site, subsurface sampling indicates that the soil wet unit weight is 19.5…

A: Unit weight of  soil = 19.5KN/m3, Calculate effective vertical stress at a depth of 5m 1) The…

Q: The Natural ground water table at a site is located at a depth of 2 m below the ground level.…

A:

Q: A soil Profile is given below. The uniformly distributed load on the ground surface is A6. Determine…

A: Given; H1=4ftH2=6ftH3=4ftsand, e=0.58sand, Gs=2.67Clay, e=1.1clay, Gs=2.72L.L=45∆p=1500 lb/ft2

Q: an

A:

Q: A sample of coarse sand was found to have a void ratio of 0.87 and 0.52 in its loosest and densest…

A: In - situ density =  1.95gm/cm3 Water Content =  0.23      Assume G = 2.6

Q: A 3m deep sand layer has a specific gravity of 2.68 and a void ratio of 0.60. Under this layer is a…

A: For this problem we dont need to use the Coeff of consoldiation formula , as the final void ratio is…

Q: QUESTION: 5 Water is flowing in an upward direction through a stratum of sand, 4 m thick, under a…

A: Given data- thickness of sand=4 mtotal head difference=2 mSG=2.65void ratio e=0.065To Find-The FOS

Q: SITUATION. A silty sand layer has effective diameter of 5 x 10^-6 m and void ratio of 0.80.…

A:

Q: 2-13. The wet unit weight of a soil sample is 18.55 kN/m³. Its specific gravity of solids and water…

A: In the first part of question bulk density, specific gravity and water content is given and it has…