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To connect one pair of fish plates, the number of bolts used are
To connect one pair of fish plates at a rail joint, four bolts are required, with two bolts typically used for each rail end. The fish plates are structural steel bars bolted to the sides of the rails to maintain alignment and facilitate expansion and contraction.
To connect one pair of fish plates at a rail joint, four bolts are required, with two bolts typically used for each rail end. The fish plates are structural steel bars bolted to the sides of the rails to maintain alignment and facilitate expansion and contraction.
NbтАЛ=4 тАФ Number of bolts per joint pair
In standard Indian Railways practice, the fish plate is designed as a four-hole bar. The bolt holes in the rail web are larger than the diameter of the bolts to allow for longitudinal thermal expansion and contraction of the rail length, ensuring the joint remains flexible rather than rigid.
Fish plates are used to connect two adjacent rails in a track.
Standard design uses 4 bolts per pair to ensure stability and load distribution.
The bolts are placed with a clearance in the hole to accommodate thermal expansion.
Excessive tightening of bolts can lead to joint failure or buckling due to restricted expansion.
Maintains alignment of the track gauge.
Provides structural continuity across rail joints.
Requires regular maintenance and lubrication.
Acts as a weak point in the track due to stress concentration.
Standard broad gauge and meter gauge tracks.
Temporary rail connections during track maintenance.
The bolts used are typically of high-strength steel with a diameter of 25mm for broad gauge.
The fish plates are usually of the 'Angle' type or 'Bar' type design.
A is correct тАФ A standard pair of fish plates requires 4 bolts for a secure joint connection.
Always remember that in Civil Engineering 'Permanent Way' questions, track flexibility is prioritized over absolute rigidity to handle temperature-induced thermal stresses.