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

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…

A:

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

A:

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

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

A: Solution given next step

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

A:

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