Engineering Questions with Answers - Multiple Choice Questions
Bearing Capacity – Permissible Total and Differential Settlements
1 - Question
The analytical methods used for finding bearing capacity of footing is based on ___________
a) Shear failure
b) Effective pressure
c) Overburden pressure
d) Size of the footing
View Answer
Answer: a
Explanation: The analytical methods for the determination of bearing capacity of footings are based essentially on shear failure.
2 - Question
The effect of settlement on structure depends upon its ________
a) Magnitude and Uniformity
b) Size
c) None of the mentioned
d) All of the mentioned
View Answer
Answer: a
Explanation: The effect of settlement upon the structure depends on its magnitude, the length of the time over which it takes place, its magnitude and the nature of the structure itself.
3 - Question
The vertical downward movement of the base of the structure is called __________
a) Penetration resistance
b) Settlement
c) Effective pressure
d) Shear failure
View Answer
Answer: b
Explanation: The vertical downward movement of the base of the structure is called settlement and its effect depends upon its magnitude and uniformity etc.
4 - Question
The allowable pressure, that should be selected for a maximum settlement is ____________
a) 40 mm
b) 25 mm
c) 30 mm
d) 10 mm
View Answer
Answer: b
Explanation: It is suggested that allowable pressure should be selected such that maximum settlement of any individual foundation is 25 mm.
5 - Question
The maximum allowable settlement for warehouses are _________
a) 25
b) 38
c) 50
d) Less than 0.5
View Answer
Answer: c
Explanation: The allowable maximum settlement for warehouse type of structure is 50 mm.
6 - Question
According to National building code of India, the differential settlement can be kept within limits by __________
a) Suitably designing the foundation
b) Decreasing the total settlements
c) Increasing the allowable pressure.
d) None of the mentioned
View Answer
Answer: a
Explanation: According to National Building Code of India (SP: 7-1970) the differential settlement shall be kept within limits to which the super-structure can accommodate itself without the distortion, by suitably designing the foundation.
7 - Question
For simple spread footing on clayey soil, the differential settlement should not exceed __________
a) 1/ 400
b) 1/300
c) 1/100
d) 1/3
View Answer
Answer: b
Explanation: For simple spread footing on clayey soils, the allowable pressure should be such that the differential settlement does not exceed 1/300.
8 - Question
According to Polish and Tokar brick masonry will crack, when the unit elongation amounts to ___________
a) 0.5
b) 0.005
c) 1.0
d) 0.05
View Answer
Answer: b
Explanation: According to Polishin and Tokar (1957), brick masonry will crack due to differential settlement when the unit elongation amount to 0.005.
9 - Question
The recommendation of American code, for a differential settlement depends upon __________
a) Type of structure and Pattern of loading
b) Settlement depth
c) None of the mentioned
d) All of the mentioned
View Answer
Answer: a
Explanation: The recommendation of American code are based upon that if the maximum total settlement is kept within a reasonable limit, the differential settlement will only be a fraction depending upon the type of structure and pattern of loading.
10 - Question
The rate of differential settlement is defined by which of the following equation?
a) H/L
b) L/H
c) H/H c
d) None of the mentioned
View Answer
Answer: b
Explanation: The rate of settlement is defined as the slope or the relative settlement between two points divided by the horizontal distance.
Rate of differential settlement = L/H.