Questions from Geotechnical Engineering

Q: A cut slope is to be made in a saturated clay.

A cut slope is to be made in a saturated clay. Given: cu = 30 kN/m2 (f = 0 condition) and  = 17 kN/m3 . The slope makes an angle b of 60° with the horizontal. Determine the maximum depth up to which...

Q: For the cut slope described in Problem 16.11, if

For the cut slope described in Problem 16.11, if we need a factor of safety of 2.0 against sliding, how deep should the cut be made?

Q: Using the graph given in Figure 16.13, determine the

Using the graph given in Figure 16.13, determine the height of a slope (1 vertical to 1 horizontal) in saturated clay with an undrained shear strength of 24 kN/m2 . The desired factor of safety agains...

Q: The moisture content of a soil sample is 18.4%,

The moisture content of a soil sample is 18.4%, and its dry unit weight is 100 lb/ft3 . Assuming that the specific gravity of solids is 2.65, Calculate the degree of saturation. What is the maximum...

Q: Refer to Problem 16.13. What should the critical height

Refer to Problem 16.13. What should the critical height of the slope be? What is the nature of the critical circle?

Q: A cut slope was excavated in a saturated clay. The slope

A cut slope was excavated in a saturated clay. The slope angle, b, is equal to 40° with the horizontal. Slope failure occurred when the cut reached a depth of 8.5 m. Previous soil explorations showed...

Q: A clay slope is built over a layer of rock. Determine

A clay slope is built over a layer of rock. Determine the factor of safety with kh = 0.4 for the slope with the following values. Height, H = 16 m Slope angle,  = 30° Saturated unit weight of soil...

Q: Refer to Figure 16.51. Use Figure 16.28

Refer to Figure 16.51. Use Figure 16.28 (’ > 0) to solve the following. If n’ = 2, ’ = 20°,...

Q: Refer to Figure 16.51. Using Figure 16.24

Refer to Figure 16.51. Using Figure 16.24, find the factor of safety, Fs with respect to sliding for a slope with the following. Slope: 2H:1V  = 110 lb/ft3 ’ = 10° H = 50 ft c’ = 700 lb/ft2...

Q: Refer to Figure 16.51. Using Figure 16.24

Refer to Figure 16.51. Using Figure 16.24, find the factor of safety, Fs with respect to sliding for a slope with the following. Slope: 1H:1V  = 115 lb/ft3 ’ = 20° H = 30 ft c’ = 400 lb/ft2...