GTU Civil Engineering (Semester 6)
Railway, Bridge & Tunnel Engineering
December 2014
Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary


1 (a) What are the advantages of railways?
3 M
1 (b) Compare roadway with railways.
4 M
1 (c) Explain various types or rails with sketch.
7 M

2 (a) Discuss factors affecting on the choice of gauge.
7 M
2 (b) Explain loading gauge and construction gauge with figure.
7 M
2 (c) Describe the common types of sudden rail failures.
7 M

3 (a) Why are marshalling yards necessary? Describe the layout of a typical marshalling yard.
7 M
3 (b) Write short note on sleeper density.
7 M
3 (c) Describe briefly the process of screening of ballast.
7 M
3 (d) Draw a sketch of Right hand turnout and loose head type switch.
7 M

4 (a) Write short note on suspension bridge.
7 M
4 (b) Explain the methods of strengthening of bridge superstructure.
7 M
4 (c) Explain with neat sketches various types of bearing used for steel bridge.
7 M
4 (d) Explain about ideal bridge site characteristics.
7 M

5 (a) Enlist out various method of tunnelling in hard rock. Explain drift method of tunnelling rock.
7 M
5 (b) Explain the process of mechanical ventilation in tunnel.
7 M
5 (c) State and explain the methods adopted for controlling dust inhalation.
7 M
Discuss about
5 (d) i) Tunnel lining
4 M
5 (d) ii) Lighting in tunnels.
3 M



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