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Soil-mechanics Questions Set 53:

Quiz Mode

How many phases are present in a completely dry soil sample?

3 - solid, water, void

2 - solid, water

2 - solid, void

2 - water, void

Solution:

If the natural water content of a soil is equal to its liquid limit, then the consistency index or relative index of the soil is:

< 1

0 to 1

Solution:

A soil specimen has a water content of 10% and a bulk unit weight of 20 KN/m³. Determine the dry unit weight.

56.78 KN/m^3

11.6 KN/m^3

25.9 KN/m^3

18.18 KN/m^3

Solution:

What is the effective permeability for an anisotropic soil, with permeabilities in x and y directions as k_x and k_y respectively?

k_x/k_y

k_x + k_y

√(k_x × k_y)

k_x × k_y

Solution:

What is the property of an equipotential line?

It is the same as a stress line

It has constant dynamic pressure

It has no velocity component tangent to it

It has no velocity component normal to it

Solution:

A 2 m layer of soil is subjected to an upward seepage head of 1 m. The soil has a specific gravity of 2.6 and a void ratio of 0.7. What is the factor of safety against quick condition?

1.23

1.56

1.88

2.23

Solution:

In the case of a submerged soil mass, when the seepage pressure becomes equal to the downward pressure due to the submerged weight of the soil at a certain level, what is this condition called?

Seepage

None of the above

Boiling condition

Hydraulic gradient

Solution:

A soil stratum consists of three layers of equal thickness. The permeabilities of the top and bottom layers are 2 × 10^-3 cm/sec, and the middle layer is 1 × 10^-3 cm/sec. Find the value of the horizontal coefficient of permeability for the entire soil layer.

1.67 × 10^-3

2.67 × 10^-3

3.67 × 10^-3

4.67 × 10^-3

Solution:

In a falling head permeability test on soil, the time taken for the head to fall from h₀ to h₁ is t. The test is repeated with the same initial head h₀, and the final head h' is noted in time t/2. Which equation gives the relationship between h', h₀, and h₁?

h' = h₀/h₁

h' = (h₀/h₁)^0.5

h' = h₀*h₁

h' = √(h₀*h₁)

Solution:

A constant head permeability test was conducted on a soil specimen under a hydraulic gradient of 2.5. The soil specimen has specific gravity of 2.65 and saturated water content of 20%. If the coefficient of permeability of the soil is 0.1 cm/s, the seepage velocity (in cm/s, round off to two decimal places) through the soil specimen is ________.

Soil-mechanics Questions Set 53:

How many phases are present in a completely dry soil sample?

Solution:

If the natural water content of a soil is equal to its liquid limit, then the consistency index or relative index of the soil is:

Solution:

A soil specimen has a water content of 10% and a bulk unit weight of 20 KN/m³. Determine the dry unit weight.

Solution:

What is the effective permeability for an anisotropic soil, with permeabilities in x and y directions as k_x and k_y respectively?

Solution:

What is the property of an equipotential line?

Solution:

A 2 m layer of soil is subjected to an upward seepage head of 1 m. The soil has a specific gravity of 2.6 and a void ratio of 0.7. What is the factor of safety against quick condition?

Solution:

In the case of a submerged soil mass, when the seepage pressure becomes equal to the downward pressure due to the submerged weight of the soil at a certain level, what is this condition called?

Solution:

A soil stratum consists of three layers of equal thickness. The permeabilities of the top and bottom layers are 2 × 10^-3 cm/sec, and the middle layer is 1 × 10^-3 cm/sec. Find the value of the horizontal coefficient of permeability for the entire soil layer.

Solution:

In a falling head permeability test on soil, the time taken for the head to fall from h₀ to h₁ is t. The test is repeated with the same initial head h₀, and the final head h' is noted in time t/2. Which equation gives the relationship between h', h₀, and h₁?

Solution:

Solution:

Related Question Sets:

Related Topics:

Soil-mechanics Questions Set 53:

How many phases are present in a completely dry soil sample?

Solution:

If the natural water content of a soil is equal to its liquid limit, then the consistency index or relative index of the soil is:

Solution:

A soil specimen has a water content of 10% and a bulk unit weight of 20 KN/m3. Determine the dry unit weight.

Solution:

What is the effective permeability for an anisotropic soil, with permeabilities in x and y directions as kx and ky respectively?

Solution:

What is the property of an equipotential line?

Solution:

A 2 m layer of soil is subjected to an upward seepage head of 1 m. The soil has a specific gravity of 2.6 and a void ratio of 0.7. What is the factor of safety against quick condition?

Solution:

In the case of a submerged soil mass, when the seepage pressure becomes equal to the downward pressure due to the submerged weight of the soil at a certain level, what is this condition called?

Solution:

A soil stratum consists of three layers of equal thickness. The permeabilities of the top and bottom layers are 2 × 10-3 cm/sec, and the middle layer is 1 × 10-3 cm/sec. Find the value of the horizontal coefficient of permeability for the entire soil layer.

Solution:

In a falling head permeability test on soil, the time taken for the head to fall from h0 to h1 is t. The test is repeated with the same initial head h0, and the final head h' is noted in time t/2. Which equation gives the relationship between h', h0, and h1?

Solution:

Solution:

Related Question Sets:

Related Topics:

A soil specimen has a water content of 10% and a bulk unit weight of 20 KN/m³. Determine the dry unit weight.

What is the effective permeability for an anisotropic soil, with permeabilities in x and y directions as k_x and k_y respectively?

A soil stratum consists of three layers of equal thickness. The permeabilities of the top and bottom layers are 2 × 10^-3 cm/sec, and the middle layer is 1 × 10^-3 cm/sec. Find the value of the horizontal coefficient of permeability for the entire soil layer.

In a falling head permeability test on soil, the time taken for the head to fall from h₀ to h₁ is t. The test is repeated with the same initial head h₀, and the final head h' is noted in time t/2. Which equation gives the relationship between h', h₀, and h₁?