n exploratory drill hole was made in a stiff saturated clay having a moisture content of 29% and G, = 2.68 (Figure 9.27). The sand layer underlying the clay was observed to be under artesian pressure. Water in the drill hole rose to a height of 6 m above the top of the sand layer.  a. If an open excavation is to be made in the clay, determine the safe depth of excavation before the bottom heaves.  b. How much is the pressure at the interface of the clay and sand? c. If a factor of safety of 2.0 is to be ensured, how deep should be the excavation from the ground surface?

Q: A hole was made in a stiff saturated soil having a Gs = 2.71 and moisture content of 0.30. The sand…

A: Given Gs = 2.71 w = 0.3 Water level in the hole is 6.3 m

Q: Root time method is used to determine A. C,, coefficient of consolidation C. a, coefficient of…

A:

Q: : The lower sand layer sand layer in the soil profile of Figure 3a is in an artesian condition.…

A: Given;1 mg/m3 = 9.81 kn/m3

Q: : The lower sand layer sand layer in the soil profile of Figure 3a is in an artesian condition.…

A:

Q: A saturated silty clay encountered in a deep excavation is found to have a water content of 27.4%.…

A:

Q: The lower sand layer in the soil profile shown below is in an artesian condition. Calculate: 2 a)…

A: Given data : It is a multipart problem from Soil Engineering/Mechanics or Geotechnical Engineering.…

Q: (c) A clay layer of 10 m thick with an average bulk unit weight y = 18.5 kN/m³ overlies a sand…

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Q: underlying the clay was under artesian An exploratory drill hole was made in a 32%. It was observed…

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Q: Exploratory drill hole 12m 8m 4.5 m An exploratory drill hole was made in a stiff saturated clay…

A: Given data: w=22%Gs=2.16 water table is 8m above the sand layer.

Q: 2.22 A consolidated-undrained normally consolidated test results: triaxial test was conducted on a…

A: Consolidated saturated clay test results σ3 = 90 kN/m²σ1 = 220 kN/m²  u = 38 kN/m²

Q: If grouting tubes of 100 mm diameter are used to grout a stratum of dense sand (n=30%, k = 5*10…

A: Introduction The abandonment grout, also known as pipelines grouting as well as pipe grouting in…

Q: Problem 2: For a laboratory consolidation test on a 20-mm-thick clay specimen, drained on one side…

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Q: A saturated silty clay encountered in a deep excavation is found to have a water content of 21.7%.…

A:

Q: The result of the liquid limit tests where N is the no of blows and w is the water content in % are…

A:

Q: Results of a laboratory consolidation test on a 10 meter thick clay indicates t 50 = 12.5 minutes…

A: given data:- thickness of lab sample=3.18 cm time taken by sample to get 50% consolidation=12.5…

Q: An exploratory drill hole was made in a stiff saturated clay having a moisture content of 38.9% and…

A: Given, w=38.9%Gs=2.34H=20fth=13.8 m

Q: b) A water supply well has been drilled to a depth of 10m in the soil profile given in Question 1…

A: Depth of well (H) = 10 mCo- efficient of permeability (k) = 0.1 mm/s = 0.1 x 10-3 m/sRadial…

Q: 7.1 The results of two consolidated drained triaxial tests are as follows: Test 3 (kN/m²) Ao,…

A:

Q: (b). The results of a consolidation test on an undisturbed soil sampled at a depth of 10m below the…

A: Given Data- Depth at which soil is sampled = 10 m Saturated unit weight, γsat  = 16 kN/m3 γw=10…

Q: Three consolidated-undrained tri-axial tests were performed on samples retrieved from a 4 meter…

A: GIVEN DATA :- TEST  CHAMBER PRESSUER DEVIATOR STRESS PORE PRESSURE 75 75 166 -12 150 150 295…

Q: Q6: A saturated clay sample was consolidated in the triaxial cell under a cell pressure of 150…

A:

Q: an open excavation is to be made in the clay, how deep can the excavation Water in the drill hole…

A: ASKED: To determine the depth of excavation before heaving occurs.   Given, Thickness of the clay…

Q: exploratory drill hole was made in a stiff saturated clay (Gs = 2.72, and w = 35%). The sand layer…

A:

Q: An exploratory drill hole was made in a stiff saturated clay (see Figure 9.9). The sand layer…

A: Solution given next step

Q: d formation pressures of 12, ottom temperature is 17 °C.

A: Solution to keep a diminished tension in part of circuit

Q: g. how do you remove the sediment from the borehole?

A: This question has been taken from geo technical engineering

Q: Draw the shear and moment diagram for a simply supported beam

A: Draw the shear and moment diagram for a simply supported beam

Q: For the conditions show below, calculate the safety factor of the clay against bottom blow-up after…

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Q: 9.4 An exploratory drill hole was made in a stiff saturated clay (see Figure 9.9). The sand layer…

A: Objective: To determine the depth of excavation before heaving occurs.   Given, Artesian pressure…

Q: 2. For the sample below of a 5 ft radius: a) calculate hydraulic gradients for all three soil…

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Q: Design a tubewell to deliver 33,000 gallons per hour at o depression head of 5 m. The average water…

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Q: solve question 7 please sir

A:

Q: A clay specimen drained on both sides was tested. The data were obtained P1=50 kPa e1=0.92 P2=120…

A: Coefficient of compressibility Coefficient of compressibility= ∆e∆σCoefficient of compressibility=…

Q: The results of two consolidated drained triaxial tests are as follows: Test o,(kN/m²) Ao,(kN/m²) 66…

A: GIVEN  FOR TEST 1   σ3=66 KN/M2∆σ1=134.77KN/M2 FOR TEST 2 σ3=91KN/M2∆σ1=169.1KN/M2

Q: Q1) B) using the Bingham plastic model determine the pressure losses in the annulus for the…

A: Givenflow rate   Q=300 gpmDrill pipe  ID     d=4.276 inplastic velocity   Pv=25 cpyield point…