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Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
PDDC SEMESTER-III EXAMINATION WINTER 2018
Subject Code:X30602 Date: 22/11/2018
Subject Name: Railway, Bridges And Tunnels
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1

Differentiate between railway transport and road transport
07

State advantages and disadvantages of railways.
07
Q.2

What are the components of permanent way? Draw the neat sketch of it and explain function of each.
07

Give a comparison of flat footed and bull headed rails.
07
OR

Explain the rails failures with neat sketch.
07
Q.3

What is coning Explain the theory of coning with sketch.
07

Define station yard. Explain types of yards.
07
OR
Q.3

Discuss various factors which should be considered while selecting a site for a bridge.
07

Define economic span. Derive the formula for economic span of a bridge.
07
Q.4

Give a detailed classification of bridges.
07

Define Clear span, Afflux, Skew bridge, Abutment, Causeway, Culvert, Apron
07
OR
Q.4

Write a short note on low cost bridges.
07

Define Piers, Free board, Linear waterway, Length of bridge, Headroom, Deck bridge, Viaduct.
07
Q.5

Enlist different methods of tunneling in soft ground. Also explain any one method in detail.
07

What are the objects of tunnel lining
07
OR
Q.5

Explain with neat sketch how the centre line of ground is transferred in tunnel.
07

Enlist the different shapes of tunnels and draw them.
07