A 25 m thick layer of clay with a saturated unit weight of 21 kN/m³ is underlain by a layer of sand, as shown in the Figure. The sand is under an artesian pressure. 1. Determine (by calculations) whether the bottom of the excavation will heave or not when no water inside the excavation (h=0). 2. The height of water in the excavation (h) for ó = 0 at the base of clay layer. 6 m 25 m 13 m 12 m W.T. Clay

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: B=10m > q= 400 kN/m² 2 m- sand 10 m- clay Fig. 1

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: An 8m-Thik layer of stiff saturated clay is underlain by a layer of sand (Refer to the figure…

A:

Q: 1. For the soil system presented below, calculate and draw diagrams of distributions of the total…

A: Answer  We know that effective stress(σ') is given by the difference between the Total stress(σ) and…

Q: A site associated with an excavation project is underlain by a 6m thick sand layer with unit weights…

A: Time factor T is calculated as  ; T = Cv td2  where ; Cv = Coefficient of consolidation = 0.018 m2…

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: A 1.5 m thick strata of sand has a dry unitweight of 15 kN/m3. A contractor passes a vibratory…

A: To determine: The new thickness.

Q: As part of a construction project, a 11 m thick layer of clay is to be loaded with a temporary 5 m…

A:

Q: The hydraulic conductivity depends mostl on: O 1. Unit weight of a soil. O 2. Interconnected void…

A: From the given questions, it is required to define porosity and to find the uplift pressure for a…

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

A: Solution given next step

Q: An exploratory drill hole was made in a stiff saturated clay having a moisture content of 29% and G=…

A:

Consolidation parameters

Consolidation is the process of expulsion of pore water present in the voids of soil solids under the pressure of the applied load. This is a quick process in the case of coarse-grained soils since the permeability is high due to the presence of more voids, while it is a slow and gradual process in the case of clayey soil as the permeability of clay is less. An example of consolidation is the settlement of soil under a building due to the load coming from the building.