110/23

86.

87.

88.

89.

90.

91.

92.

93.

The normal detention periods maintained in a horizontal flow grit chamber
(non-aerated) and detritus tank are respectively

A) 1 minute and 3.5 minutes B) 10 minutes and 3.5 minutes
C) 1 minute and 30 minutes D) 10 minutes and 30 minutes

What is coefficient of curvature if Dgg = 3mm, Dgg = 1.5mm, Dy) =0.75mm ?

^) 8 B) 1

C) 1.5 D) 4

The value of porosity of a soil sample in which the total volume of soil grains is equal
to twice the total volume of voids would be

A) 75% B) 66.66%

C) 50% D) 33.33%

Equation for a line in a plasticity chart is

A) |p = 0.007(w, — 10)

B) Ip = 0.23(w, — 20)

©) Ip = 0.73(w, - 20)

D) Ip = 0.73(w, — 10)

If the OMC of a soil sample is 12.5%, maximum dry density is 19.6 kN/m® and

G = 2.68, the degree of saturation of the sample is ‏م7‎
‎A) 2 B) 34 C) 66 ) 98

Indirect method of geotechnical investigation is also termed as
A) Geo chemical method

B) Geo physical method

C) Borehole method

D) Pumping out method

Maximum net pressure intensity causing shear failure of soil is known as
A) Safe bearing capacity

B) Net safe bearing capacity

C) Net ultimate bearing capacity

D) Ultimate bearing capacity

The minimum value of camber provided for bituminous surface hill roads is
A) 2.3% B) 2.5%
C) 3.0% D) 3.5%

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