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basic civil engineering interview question part2

1. What is rigging?
In sailing, the ropes used to move the sails around so the boat will move in the right direction when
the wind blows.
2. What is absolute pressure?
Absolute pressure is simply the addition of the observed gage pressure plus the value of the local
atmospheric pressure.
3. What is Gravity flow?
Gravity flow is fluid flowing due to the forces of gravity alone and not to an applied pressure head. In
the Bernoulli equation, the pressure term is omitted, and the height and velocity terms are the only
ones included.
4. What is the difference between engineering stress and true stress?
In biology, Stress is something that disrupts homeostasis of an organism. In engineering, Stress is an
external force that pushes, pulls, twists, or otherwise puts force on something.
Engineering stress assumes that the area a force is acting upon remains constant, true stress takes into
account the reduction in area caused by the force.
5. What is a kip?
ANS: 1 kip = 1000 lbs
6. What are some structures that may be subjected to fatigue?
Bridges, hydraulic presses, burners trains
7. Will going from a 3-tap to 6-tap increase water pressure?
No, the pressure will be the same, you will get more volume only if your pumps can handle the GPM,
to increase pressure you may need a booster pump or a single pump that is rated for your needs.
8. Why does the pressure increase under soil?
Soil pressure increases with depth due to the overburden or self-weight of the soil and due to loads
imposed upon the soil.
For example, the pressure variation below the depth of soil is linear and the relation is given by
pressure = unit wt * depth. As depth increases, there will be a linear increase in the soil pressure.
9. What is the distance between railway tracks?
4 feet, 8 1/2 inches
10. How high should the water tank be to provide a 60 PSI at base of this water tower?
138.60ft
2.31ft of water= 1 PSI
11. What are the reasons for geotechnical site investigations in Uganda?
To know the soil properties, in so doing be in position to determine whether the PArticular site is
suitable for the purpose intended
To know the history of the site
To know what remedies need to be put in place before construction can start
Based on the soil properties, that can be determined on site and in the lab, design the appropriate
foundation for the structure.
12. What do you mean by honeycomb in concrete?
Some people call it an air pocket in the concrete or a void.
13. What is the purpose of the gap in the road on this bridge?
Purpose of the gap in the road is to allow the road to exPAnd and contract with temperature changes
without causing damage or deformation to the road

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