Civil engineering Questions and solutions set - 10

Civil engineering Questions and solutions set - 10
Question:-
Option (A)
Option (B)
Option (C)
Option (D)
Correct Option:
C
Question Solution:
When all the stresses are assumed to be tensile, then strain in any particular direction is given as
εx =
Here σx = - σ1; σy = - σ2; σz = - σ2
therefore, (εy)c =
=
=> (εy)c = ...(i)
when σx = -σ1; σy = 0; σz = 0, then
y)a =
=> (εy)a = ...(ii)
But, (εy)c =
=> =
=> μσ1 + μσ2 - σ2 =
=> = σ2(1 - μ)
=> σ2 =
Question:-
Option (A)
Consolidated Undrained Test (CU)
Option (B)
Unconsolidated Undrained Test (UU)
Option (C)
Consolidated Drained Test (CD)
Option (D)
All are equally suitable
Correct Option:
B
Question:-
Option (A)
15.6°
Option (B)
10.6°
Option (C)
8.6°
Option (D)
13.6°
Correct Option:
C
Question Solution:
Given,
φ' = 30°; &γsat = 21 kN/m3;
F = 2; &β = ?; &γ' = &γsat - &γw
We know that,
Factor of safety
F =
=> 2 =
=> tan&β =
=> &β = 8.6°
Question:-
Option (A)
1 cm
Option (B)
2 cm
Option (C)
3 cm
Option (D)
4 cm
Correct Option:
A
Question Solution:
Settlement ∝
S1
S2 => S2 ∝ log 2 = S1
Question:-
Option (A)
112.5 kN/m
Option (B)
125.5 kN/m
Option (C)
95.85 kN/m
Option (D)
102.5 kN/m
Correct Option:
A
Question Solution:
Earth pressure at rest =
Total earth pressure =
= =
= 112.5 kN/m