Questions from Geotechnical Engineering

Q: Refer to Figure 7.5. For a constant-head

Refer to Figure 7.5. For a constant-head permeability test in a sand, the following are given: L = 300 mm A = 175 cm2 h = 500 mm Water collected in 3 min = 620 cm3 Void ratio of sand = 0.58 Deter...

Q: In a constant-head permeability test in the laboratory, the

In a constant-head permeability test in the laboratory, the following are given: L = 305 mm and A = 95 cm2. If the value of k = 0.015 cm/s and a flow rate of 7300 cm3/hr must be maintained through the...

Q: For a falling-head permeability test, the following are given

For a falling-head permeability test, the following are given: Length of the soil specimen = 500 mm Area of the soil specimen = 26 cm2 Area of the standpipe = 1.3 cm2 Head difference at time t = 0 is...

Q: For a falling-head permeability test, the following are given

For a falling-head permeability test, the following are given: length of specimen = 380 mm; area of specimen = 6.5 cm2; k = 0.175 cm/min. What should the area of the standpipe be for the head to drop...

Q: A hydrometer test has the following results: Gs = 2.

A hydrometer test has the following results: Gs = 2.6, temperature of water = 24°C, and R = 43 at 60 minutes after the start of sedimentation (see Figure 2.30). What is the diameter D of the smallest-...

Q: For a falling-head permeability test, the following are given

For a falling-head permeability test, the following are given: Length of the soil specimen = 700 mm Area of the soil specimen = 20 cm2 Area of the standpipe = 1.05 cm2 Head difference at time t = 0 is...

Q: A sand layer of the cross-sectional area shown in Figure

A sand layer of the cross-sectional area shown in Figure 7.29 has been determined to exist for an 800 m length of the levee. The hydraulic conductivity of the sand layer is 2.8 m/day. Determine the qu...

Q: A permeable layer is underlain by an impervious layer, as shown

A permeable layer is underlain by an impervious layer, as shown in Figure 7.30. With k = 5.2 ×10-4 cm/s for the permeable layer, calculate the rate of seepage through it in m3 /hr/m if H...

Q: Refer to Figure 7.31. Find the flow rate in

Refer to Figure 7.31. Find the flow rate in m3 /s/m (at right angles to the cross section shown) through the permeable soil layer. Given: H = 5 m, H1 = 2.8 m; h = 3.1 m, L = 60 m, ...

Q: Refer to Figure 8.28. Given: H1 =

Refer to Figure 8.28. Given: H1 = 6 m D = 3 m H2 = 1.5 m D1 = 6 m Draw a flow net. Calculate the seepage loss per meter length of the sheet pile (at a right angle to the cross section shown).