Bridge Engineering
As per I.R.C. recommendations, the approaches should have at least a minimum straight length of _______________ on either side of a bridge
- 6 m
- 10 m
- 15 m
- 30 m
Bridge is classified as ‘Major Bridge’ if the span length is
- in between 8 – 30 m
- in between 30 – 120 m
- in between 120 – 240 m
- above 240 m
The most common counter measure used to prevent scour at bridge abutments is
- Sand bags
- Cut water
- Riprap
- Turf
In the design of piers, the water pressure is considered
(i) as Static pressure
(ii) as Dynamic pressure
(iii) due to Impact of cross current
- Only (i)
- (i) and (ii)
- (ii) and (iii)
- (i), (ii) and (iii)
Suspension bridges are
- movable bridges
- suitable for long spans
- suitable for short spans
- used for navigable channels
Bridge Engineering
In erection of bridges the Incremental launching method is used when the bridge decks are greater than
- 250 m in length
- 100 m in length
- 50 m in length
- 300 m in length
Expansion bearing in bridge super structure permits
- Only rotation
- Only translation
- No movement
- Rotation and translation
The correct order of components of a typical bridge starting from the top level
(1) Abutment,
(2) Girder,
(3) Foundation, and
(4) Flooring, is:
- 3-2-1-4
- 3-1-4-2
- 3-4-2-1
- 4-2-1-3
Pontoon is an example of a
- Temporary bridge
- RCC Bridge
- Iron and Steel Bridge
- Cantilever Bridge
Which of the following are the examples of river training works?
i. Cut-off
ii. Embankments
iii. Spurs
- (i) and (ii)
- (ii) and (iii)
- (i) and (iii)
- (i), (ii) and (iii)
Bridge Engineering
Which of the following is / are the Ideal Bridge Site Characteristic(s)?
i. The flow of water in the stream at the bridge site should be in steady regime condition
ii. The stream should be well defined and as narrow as possible
iii. There should be confluence of large tributaries in the vicinity of bridge site
- Only (i)
- (i) and (ii)
- (ii) and (iii)
- (i), (ii) and (iii)
The proposed masonry arch bridge having the total height of its abutments or piers from top to bottom as H can be proposed to have economical spans each equal to _______________
- 1.2H
- 2/3H
- 2H
- 1.5H
Truss bridges are normally provided in the span range of __________________
- 10 – 20 m
- 20 – 30 m
- 50 – 100 m
- More than 500 m
In bridges, fixed bearings
- allow rotation but restrict translation
- do not allow rotation but allow translation
- allow rotation and translation
- do not allow rotation as well as translation
Free board in a bridge is the vertical distance between the
- the designed High Flood Level and the level of the crown of the bridge at its lowest point
- the designed High Flood Level and the level of the crown of the bridge at its highest point
- the designed Low Flood Level and the level of the crown of the bridge at its lowest point
- the designed Low Flood Level and the level of the crown of the bridge at its highest point
Bridge Engineering
What should be the minimum width of footpath while designing a bridge for rural areas?
- 1.0 m
- 1.5 m
- 2.0 m
- 3.0 m
Which of the following are the examples of Abutments without Wing Walls?
i. Box Abutment
ii. Tee Abutment
iii. Arch Abutment
- Only (i)
- (i) and (ii)
- (ii) and (iii)
- (i), (ii) and (iii)
For a large span & earthquake resistant bridges, the most suitable type of bearings that can be used are
- Tar paper bearing
- Rocker & Roller bearing
- Elastomeric bearing
- Pot-PTFE bearing
As per the IRC recommendations, Approaches in a bridge should have a minimum straight length of ____________________ on either side of a bridge
- 10 m
- 15 m
- 30 m
- 45 m
In a bridge, Curtain Wall is used
- as a protection against the scouring action of a stream
- as a protection against the solar radiation
- for diverting the flood water
- for connecting the intermediate supports
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