 MORE IN Transportation Engineering - 2
MU Civil Engineering (Semester 6)
Transportation Engineering - 2
May 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) Describe the formula used for economic span of a Bridge starting assumptions made.
6 M
1 (b) Following are the costs involved in a uniform multiple span bridge construction. Calculate the Economic span.
 Span (m) 5 9 13 16 Cost of Girder (Rs) 1700 7000 16000 25000 Cost of single pier and its Foundation. (Rs) 15000 20000 22000 33000
7 M
1 (c) Derive expression for finding the extra widening required on a horizontal curve. Calculate the extra widening of pavement required on horizontal curve of radius 700 m. On two-lane highway. Assume Design Speed as 80 kmph, wheel base= 6m.
7 M

2 (a) Explain the procedure involved in design of flexible pavement including the graphs required for the following methods.
i) Group Index Method.
ii) C.B.R ( California Bearing Ratio) method.
10 M
2 (b) The speed of overtaking and overtaken vehicles are 60 kmph and 30kmph respectively, on a two- way traffic road.
If the acceleration of overtaking vehicle is 0.99 m/sec2, find
ii) Minimum Length of Overtaking Zone.
iii) Draw a neat sketch of Overtaking Zone.
10 M

3 (a) Explain importance of Highway maintenance.
6 M
3 (b) Discuss various types of failures in Flexible and Rigid Pavements with all the sketches.
7 M
3 (c) Explain about the application of Geotextiles and geogrid in Highway Pavements.
7 M

Explain the following.
4 (a) 30th Highest Hourly Volume.
5 M
4 (b) Methods of pavement Evaluation.
5 M
4 (c) PIEV theory.
5 M
4 (d) Differentiate between Bitumen and tar.
5 M

5 (a) A National Highway is passing through a rolling terrain, has a horizontal curve of radius of 500 m. Design length of transition curve assuming suitable data.
10 M
5 (b) Calculate the super-elevation to be provided for a Horizontal curve of radius 400 m. For a design speed of 100 kmph in a plain terrain. What will be the maximum design speed permissible if the super-elevation is restricted to 0.07. Assume co-efficient of lateral friction as 0.15.
10 M

Explain the following.
6 (a) Soil-stabilization methods.
5 M
6 (b) Afflux and its calculation.
5 M
6 (c) Benkalman Bearn Method.
5 M