Original GWT For the soil strata shown in figure, the water table is lowered by drainage by 2 m and if the top 2 m thick silty sand stratum remains saturated by capillary action even after lowering of water table, the increases in effective vertical S G. 4 Zone of capillary saturation 2 m after drainage GWT after drainage 10 m Silty sand Y sat = 22 kN/m³ pressure in kPa at mid-height of clay layer will be 7 m Clay = 19 kN/m³ Y sat

Q: The relationship between the specific gravity of sand (G) and the hydraulic gradient (i) to initiate…

A: Porosity n=30%=0.30   It is needed to find the relationship between specific gravity G &…

Q: Situation 1. A clay layer 12ft thick rests beneath a deposit of submerged sand 26ft thick. The top…

A:

Q: Problem 5 A layered soil is shown in Figure P4.26. Estimate the equivalent permeability (cm/sec) for…

A: 4 layers of soil having different permeability is given z1 = z2 = z3 = z4 = 3 ftK1cm/s k2 = 2 ×…

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: A soil sample with a layered soil is placed in a tube 3m long. water is allowed to flow in the one…

A: The detailed solution and explanation are attached below.Explanation:Step 1: Step 2:

Q: : For the soil profile shown in figure below, determine total and effective vertical stresses and…

A: Given data,  Gs of sand = 2.66 Gs of silt = 2.7 Gs of clay = 2.72  e sand = 0.72 e silt = 0.66 e…

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: effective stress (kPa) at the base of each soil layer listed below. Assume the water table rest 4 m…

A: The given data is shown in the diagram as below.To determine the total stress, pore water pressure…

Q: A soil profile consisting of three layers is shown in Table and Figure below i. Calculate the values…

A: Total stress=σ=γzPore water stress=u=γwzEffecrive stress=σ=σ-u

Q: Using the expression above, determine the distribution of the total and effective vertical stress…

A: From the given data we will calculate the total vertical stress and effective stress at each transit…

Calculation of Settlement

The vertical displacement of the structural foundation due to the loading from the superstructure is known as settlement. It is due to the reduction of air voids present in the soil. The amount of vertical displacement depends on the bearing capacity of the soil on which the foundation is laid. The effect of the settlement depends on the magnitude of settlement, uniformity, and the structural design of the structure. The maximum allowable settlement for residential and office buildings should be less than 18 mm, for industrial buildings, it is 38 mm and for commercial buildings, it is 25 mm.