List of top Civil Engineering Questions

A 4 x 4 group pile, with each pile 20 m long and 500 mm in diameter, is installed in a square pattern in a clayey soil, as shown in the figure. The average unconfined compressive strength of the soil is 100 kN/m\(^2\), and the adhesion factor is 0.8. Neglect the bearing at the tip of the piles. For a group efficiency factor of 1.0, the centre to centre spacing(s) of the piles (in m) would be ......... (round off to two decimal places).
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The shaft of a 6 m wide gate in the figure will fail at a moment of 3924 kN.m about the hinge P. The maximum value of water depth \( h \) (in m) that the gate can hold is ......... (round off to the nearest integer).
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From a flow-net diagram drawn under a concrete dam, the following information is obtained:
(i) The head difference between upstream and downstream side of the dam is 9 m.
(ii) The total number of equipotential drops between upstream and downstream side of the dam is 10.
(iii) The length of the field nearest to the toe of the dam on the downstream side is 1 m.
If the soil below the dam is having a saturated unit weight of 21 kN/m\(^3\) and the unit weight of water is 9.81 kN/m\(^3\), then the factor of safety against the quick condition will be __________ (round off to two decimal places).

Consider steady flow of water in the series pipe system shown below, with specified discharge. The diameters of Pipes A and B are 2 m and 1 m, respectively. The lengths of pipes A and B are 100 m and 200 m, respectively. Assume the Darcy-Weisbach friction coefficient, \( f \), as 0.01 for both the pipes.
The ratio of head loss in Pipe-B to the head loss in Pipe-A is __________ (round off to the nearest integer).
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The flow rate of a liquid through a pipe is 0.5 m³/s. What is the velocity of the fluid if the pipe has a diameter of 0.1 m?

The ultimate tensile strength of a material is 400 MPa. If the diameter of the wire is 10 mm, what is the maximum force that can be applied to the wire before it breaks?

Determine the moment of inertia of a rectangular beam section with a width of 300 mm and height of 500 mm about its neutral axis.

The ratio of weight of water to weight of dry soil is called .......

The effective length of a column of length \(L\), held in position and restrained in direction at one end, and the other end effectively restrained in direction but not held in position, is equal to

In the design of a steel tension member, which mode is NOT typically considered?

Which of the following agent does not enhance the workability of concrete?

The minimum cover in any pretensioned - prestressed concrete member located in an aggressive environment is ........

A structure has two degrees of indeterminacy. The number of plastic hinges that would be formed at complete collapse is .......

In the slope deflection equations, the deformations generated are due to:
i. axial force
ii. shear force
iii. bending moment

Which of the following parameters most significantly influences the development length in a reinforced concrete beam?