1. Which of the following is NOT a type of bridge foundation?
a) Piles
b) Wells
c) Rafts
d) Arches
Answer: d) Arches
Explanation: Arches are not a type of bridge foundation. They are structural elements used in bridge design but are not foundational support structures like piles, wells, or rafts.
2. What is the primary function of coffer-dams in bridge construction?
a) To support the weight of the bridge
b) To divert water flow
c) To create a dry work environment below water level
d) To enhance aesthetic appeal
Answer: c) To create a dry work environment below water level
Explanation: Cofferdams are temporary structures built in water to create a dry area for construction activities, allowing workers to work below water level.
3. Which type of foundation involves driving vertical structural members into the ground?
a) Rafts
b) Piles
c) Arches
d) Cantilevers
Answer: b) Piles
Explanation: Pile foundations involve driving vertical structural elements (piles) into the ground to provide support for the bridge structure.
4. Sheet piles are commonly used in the construction of:
a) Bridge girders
b) Cofferdams
c) Road pavements
d) Bridge abutments
Answer: b) Cofferdams
Explanation: Sheet piles are often used in the construction of cofferdams to create temporary barriers for water exclusion during construction activities.
5. What is the purpose of equipment and plant in bridge construction?
a) To design the bridge structure
b) To strengthen existing bridges
c) To facilitate construction activities
d) To conduct bridge inspections
Answer: c) To facilitate construction activities
Explanation: Equipment and plant in bridge construction refer to machinery and tools used to carry out various construction tasks efficiently.
6. Which material is commonly used for underwater construction of bridges?
a) Steel
b) Concrete
c) Wood
d) Aluminum
Answer: b) Concrete
Explanation: Concrete is frequently used for underwater construction due to its ability to set and harden underwater, making it suitable for various underwater bridge construction applications.
7. Strengthening of bridges is primarily carried out to:
a) Increase aesthetic appeal
b) Reduce maintenance costs
c) Extend the bridge’s lifespan
d) Enhance traffic flow
Answer: c) Extend the bridge’s lifespan
Explanation: Strengthening of bridges aims to prolong the service life of the structure by reinforcing its components and addressing potential weaknesses.
8. Bridge failure can be caused by:
a) Insufficient maintenance
b) Overloading
c) Natural disasters
d) All of the above
Answer: d) All of the above
Explanation: Bridge failure can result from various factors, including insufficient maintenance, overloading, and natural disasters, among others.
9. Which construction method involves sinking vertical wells into the ground?
a) Cantilever construction
b) Well sinking
c) Arch construction
d) Slab construction
Answer: b) Well sinking
Explanation: Well sinking is a construction method that involves sinking vertical wells into the ground to serve as foundation supports for the bridge structure.
10. The choice of bridge materials is influenced by factors such as:
a) Cost
b) Environmental conditions
c) Design requirements
d) All of the above
Answer: d) All of the above
Explanation: The choice of bridge materials considers factors such as cost, environmental conditions, design requirements, and many others to ensure the suitability and longevity of the bridge structure.