Q3.A 12 mm thick plate is connected to two 8 mm thick plates, on either side through
a 16 mm diameter power driven field rivet as shown in the figure below. Assuming
permissible shear stress as 90 MPa and permissible bearing stress as 270 MPa in
the rivet, the rivet value of the joint is
Answer : Option BExplaination / Solution: No Explaination.
Q5.A precast concrete pile is driven with a 50 kN hammer railing through a height of
1.0 m with an efficiency of 0.6. The set value observed is 4 mm per below and the
combined temporary compression of the pile, cushion and the ground is 6 mm. As
per Modified Hiley Formula, the ultimate resistance of the pile is
Answer : Option BExplaination / Solution: No Explaination.
Q6.A plate load test is carried out on a 300 mm × 300 mm plate placed at 2 m below
the ground level to determine the bearing capacity of a 2 m × 2 m footing placed
at same depth of 2 m on a homogeneous sand deposit extending 10 m below
ground. The ground water table is 3 m below the ground level. Which of the
following factors does not require a correction to the bearing capacity determined
based on the load test ?
Answer : Option CExplaination / Solution: No Explaination.
Q9.For limit state of collapse, the partial safety factors recommended by IS 456
: 2000 for estimating the design strength of concrete and reinforcing steel are
respectively
Answer : Option CExplaination / Solution: No Explaination.
Q10.A rectangular concrete beam of width 120 mm and depth 200 mm is prestressed
by pre tensioning to a force of 150 kN at an eccentricity of 20 mm. The crosssectional
area of the prestressing steel is 87.5 mm2. Take modulus of elasticity of
steel and concrete as 2.1 × 105 MPa 3.0 × 104 MPa respectively. The percentage
loss of stress in the prestressing steel due to elastic deformation of concrete is
Answer : Option BExplaination / Solution: No Explaination.
Total Question/Mark :
Scored Mark :
Mark for Correct Answer : 1
Mark for Wrong Answer : -0.5
Mark for Left Answer : 0