Free Printable SOIL MECHNICS MODULE 3 AND MODULE 4

1.

The relationship between Cv, Mv, and R

a)

$Cv\ =\ \ \frac{k\ }{Mv\ \times\gamma w}$

b)

$Cv\ =\ \ \frac{\gamma w}{Mv\ \times k\ }$

c)

$Cv\ =\ \ \frac{Mv\ \times\gamma w\ }{k}$

d)

$Cv\ =\ \ \frac{k\ \times Mv\ }{\gamma w}$

2.

The relation between co - efficient of consolidation Cv, time factor Tv and drainage path d is

a)

$Cv\ =\ \frac{d^2\times T_v}{t}$

b)

$Cv\ =\ \frac{t\times T_v}{d^2}$

c)

$Cv\ =\ \frac{d^2\times T_v}{t}$

d)

$Cv\ =\ \frac{T_v}{d^2\times t}$

3.

The settlement $\Delta H$ of soil layer of thickness $H_o$ under overburden pressure of $p_0$ due to additonal load of $\Delta p$

a)

$\Delta H\ =\ \frac{C_{c_{\ }}H_0}{1+e_0}\ \log_{10}\left(\frac{p_0\ +\ \Delta p_0}{p_0}\right)$

b)

$\Delta H\ =\ \frac{C_{c_{\ }}}{1+e_0}\ \log_{10}\left(\frac{p_0\ +\ \Delta p_0}{p_0}\right)$

c)

$\Delta H\ =\ \frac{C_{c_{\ }}H_0}{1+e_0}\ \log_{10}\left(\frac{p_0}{p_0\ +\ \Delta p_0}\right)$

d)

$\Delta H\ =\ \frac{H_0}{1+e_0}\ \log_{10}\left(\frac{p_0\ +\ \Delta p_0}{p_0}\right)$

4.

Consolidation ia an instantaneous process whike compaction is not

a)

True

b)

False

5.

A laboratory consolidation teat on a normally consolidated clay showed the following results. Load 140 Kn/m2 and 212 Kn/m2. Void ratio is 0.92 and 0.86. Thickness of the clay is 2.8 m. Calculate primary settlement?

a)

87.5mm

b)

40.1 mm

c)

97.3 mm

d)

39.6 mm

6.

A soil sample 150 mm high and 100 mm in diameter is placed in falling head parameter that has connected to a vertical pipe of 2 mm dia. The level of water in this pipe measured above outlet level in parameter falls from 350mm to 200 mm in 60 seconds the permeability of soil sample is (m/sec)

a)

$2.39\times10^{-7}$

b)

$1.2660\times\ 10^{-6}$

c)

$5.50\times10^{-7}$

d)

$1.96\ \times10^{-6}$

7.

A soil deposit consists of 4 layers of equal thickness. The co-efficient of permeability of second, third, and fourth layers are respectively 1/4 , 1/2, and 3/4 the co-efficient of permeability of top layer. The average permeability perpendicular to direction of flow is.

a)

25k/3

b)

12k/25

c)

8k/13

d)

5k/8

SOIL MECHNICS MODULE 3 AND MODULE 4

Total questions: 7

Worksheet time: 6mins

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