4. Which of the following nearly gives the transmissibility of the soil when the water table is at the ground  surface? a. 12.752 sqm/day  b. 14.034 sqm/day  c. 16.664 sqm/day  d. 14.034 sqm/day 5. If the void ratio is 0.60 and the hydraulic gradient is 0.0018, which of the following most nearly gives the  interstitial velocity of water moving through the soil?  a. 0.0217 cm/hr  b. 0.0104cm/hr  c. 0.0374 cm/hr  d. 0.0217 cm/hr

Q: From the figure shown, the thickness of a permeable soil layer is 1.1m making an angle of 15degrees…

A: Step 1:Step 2: Step 3: Step 4:

Q: For a sandy soil with G= 2.68, calculate the critical hydraulic gradient that will cause boiling or…

A: Given: Gs = 2.68, Sandy Soil Calculate: Critical hydraulic gradient=?

Q: 1. Given the structure and the flow net detailed in Figure 1. The coefficient of permeability (i.e.…

A:

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

A:

Q: 2m clay layer has values of e = 0.92 , Gs = 2.72 and liquid limit of 40%. Above the clay is a 3m…

A: The Compression Index (Cc) is equal to the slope of the pressure versus void ratio graph (log…

Q: A uniform soil deposit has a void ratio 0.6 and specific gravity of 2.65. The natural ground water…

A: Given data,  For depth upto 2.5 m saturation is 50% For below from 2.5 m there is saturation is…

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: . The specific gravity and insitu void ratio of a soil deposit are 2.71 and 0.85 respectively. The…

A: Specific gravity G=2.71 Void ratio e=0.85   It is needed to find the value of the critical hydraulic…

Q: What is the equivalent coefficient of permeability (k) for soil layers of k2 and k3? where k2= 1.75…

A:

Q: Steady state vertical seepage is occurring in the soil profile shown in the figure. EL 100 A water…

A:

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: There are three soils from left to right (1, 2, and 3). The soils have permeabilities ?1 = 0.09…

A:

Field applications of hydraulic conductivity

Hydraulic conductivity is one of the hydraulic properties of soil defined as a measurement of the ability of a porous medium to permit water movement or fluid flow through it. It is denoted by the letter K. It is influenced by the density and viscosity of the fluid. It is also called permeability. Hydraulic conductivity is defined as the ratio of velocity to the hydraulic gradient. The different methods used to determine the hydraulic conductivity are laboratory methods (constant head permeability tests and falling head tests), in-situ field methods (pumping in and pumping out tests), small scale field tests (infiltration tests and slug tests), and indirect methods such as estimation from grain size, consolidation test data, and horizontal capillary test. The pedotransfer function (PTF) method is a specific empirical estimating approach employed in the soil sciences is also used to determine the hydraulic conductivity of the soil.