Bridge Engineering
Skew of bridge is the angle between
- centreline of water course/road and centreline of track
- centreline of water course and centreline of pier
- centreline of water course/road and normal of centreline of track
- centreline of abutment to centreline of pier
According to Indian Railways, the bridges having total waterways less than 18 m or having any span of clear waterways less than 12 m is
- Minor bridges
- Major bridges
- Important bridges
- Culverts
The type of loading to be considered while designing temporary bridges is __________________
- IRC class AA
- IRC class A
- IRC class B
- IRC class 70 R
The tracked vehicle loading specified under IRC Class AA originated due to the loading pattern of ________________
- Trucks
- Heavy duty armed trucks
- Arms tanks
- Train of army duty truck loads
Which of the statement(s) is/are false for Bridge Bearings?
i. The expansion and contraction and the movement which occur under traffic or wind loads are not imposed on the supports of the bridge but on the bearings which allow such movements quite freely in relation to the supports
ii. The cost of bearing accounts for as much as 10-15% of the total cost of the bridge
- Only (i)
- Only (ii)
- Both (i) and (ii)
- Neither (i) nor (ii)
Bridge Engineering
The end supports of a bridge superstructure are known as
- wing walls
- piers
- abutment
- bed docks
IRC standard loading for bridge designs are
- Class A, Class B, Class AB and Class 70-R
- Class A, Class B, Class AB and Class 90-R
- Class A, Class B, Class BB and Class 70-R
- Class A, Class B, Class AA and Class 70-R
Which class of vehicle live loading shall be considered as per IRC, for design of bridges in select corridors where passage of trailer vehicles carrying stator units, turbines, heavy equipments and machinery may occur occasionally?
- Class A loading
- Class AA loading
- Class 70R loading
- Class SV loading
As per IRC, the class of loading considered the bridges of National Highways
- A
- B
- AA
- None of the above
A bridge constructed over an obstacle to convey water is known as
- Through bridge
- Grade separator
- Aqueduct
- Viaduct
Bridge Engineering
Long span bridge has length
- Between 60 m and 120 m
- Between 120 m and 160 m
- More than 120 m
- More than 600 m
As per IRC, the bridge approach should have a minimum straight length of _________________ on either side of bridge.
- 10 m
- 15 m
- 20 m
- 25 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
Which of the following is a type of Elastomeric bearing?
- Roller bearing
- Neoprene rubber bearing
- Tar paper bearing
- Rocker bearing
Wing walls are designed as retaining walls similar to those of abutments. However the main difference between their design is
- the absence of live load in case of wing wall
- the absence of dead load in case of the wing wall
- the absence of the hydrostatic load in case of wing wall
- the presence of impact load in case of the abutment
Bridge Engineering
Slab bridge is generally preferred structural system for maximum span of
- 2 m
- 6 m
- 9 m
- 15 m
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
The main forces in a suspension bridge of any type are _______________ in the cables and _______________ in the pillars.
- Tension, Compression
- Tension, Pull
- Compression, Tension
- Torsion, Compression
________________ are the end supports to superstructure of bridge which retain earths on their back side which serves as an approach to the bridge.
- Girders
- Deck
- Pier Cap
- Abutments
The arrangement made to prevent entry of water at the site of pier construction is known as
- Caisson
- Cofferdam
- Earthen dam
- None of the above
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