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VTU Civil Engineering (Semester 5)
Transport Engineering 1
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) Explain the role of transportation in social and economic development of the country.
6 M
1 (b) Explain various characteristics of road transport.
6 M
1 (c) Write a note on the following:
i) Jayakar Committee Recommendations.
8 M

2 (a) Briefly explain about 'Planning Survey' for a highway project.
8 M
2 (b) There are three alternate proposals of road plans for a district in Karnataka states. Suggest the order of priority for planning road based on the maximum utility approach. Assume utility units of 0.5, 1.0, 2.0 for the three population ranges and utility units of 1.0 and 5.0 per 1000 tonnes of agricultural and industrial products served.
 Proposal Road length (km) Number of towns and villages served with population range Productivity served in 1000 tonnes <2000 2001 - 5000 5001 - 10000 Agriculture Industrial A 500 100 150 40 150 20 B 700 270 350 82 300 35 C 900 290 430 96 430 45
6 M
2 (c) write short notes on:
i) PMGSY scheme
ii) KSHIP and its projects.
6 M

3 (a) What are the main objectives of the preliminary survey and the steps followed in the preliminary survey by conventional method? (Name the steps).
6 M
3 (b) Write a note on carriageway with reference to IRC recommendations. Also draw a neat sketch of lateral clearances/placement of vehicles on a two lane pavement.
6 M
3 (c) The speeds of overtaking and overtaken are 70kmph and 40kmph respectively on a two way traffic road. The average acceleration during overtaking may be assumed as 0.99 m/sec2.
i) Calculate safe overtaking sight distance.
ii) Calculate minimum and desirable length of overtaking zone.
iii) Draw a neat sketch of overtaking zone and show the position of sign posts.
8 M

4 (a) With the help of a neat sketch, explain the attainment of super elevation in the field,
6 M
4 (b) Calculate the length of transition curve using the following data:
Design speed=65 kmph, radius of circular curve= 220m, pavement width including extra widening = 7.5m, allowable rate of introduction of super elevation (pavement rotated aout the centre line) is 1 in 150.
8 M
4 (c) Explain the following terms with respect to highway vertical alignment: i) Ruling gradient ii) length of parabolic summit curve when L>SSD, with equations.
6 M

5 (a) Briefly explain how the CBR value of the given soil of found in the laboratory.
6 M
5 (b) What are the desirable properties of road aggregate? Mention the IRC/MORTH requirements/specifications values for different tests conducted on road aggregate.
8 M
5 (c) Distinguish between bitumen and tar. Also mention the different tests conducted on butumen.
6 M

6 (a) Draw a typical flexible pavement layer indicating the different component layer. Also mention the functions of each component layer.
8 M
6 (b) Design the flexible pavement as per IRC 37-2001, using the following data:
Number of commercial vehicle as per last count=1000 commercial vehicles construction period = 3 years, annual growth rate= 8%, design CBR of soil = 10%, category of road = national highway, two lane single carriageway, design life = 10 years, VDF=2.5, LDF= 75 %. Calculate the overall thickness and the thickness of individual pavement layer using the following pavement design catalogue for a traffic range 10-150 Msa and CBR 10%.
Explain with the help of equations
iii) Equivalent radius of resisting section with to rigid pavement.
 Cummulative traffic (Msa) Total pavement thickness (mm) Pavement composition Bituminous surfacing Granular base and sub base (m) BC(mm) DBM(mm) 10 540 40 50 Base = 250 20 565 40 75 Sub base = 200 30 580 40 90 50 600 40 110 100 630 50 130 150 650 50 150
6 M
6 (c) Explain the zeolite process of hardness removal.
6 M

7 (a) Explain in detail the requirements, specifications of materials and the construction steps/method for a water mix macadam (WMM) layer.
8 M
7 (b) Explain in detail the requirements, specifications of materials and the construction steps/method for Bituminous Concrete (BC) layer.
8 M
7 (c) Mention the tests, gradation and requirements as per IRC for a coarse/fine aggregate used in Pavement Quality Concrete (PQC).
4 M

8 (a) Explain in detail 'Highway user benefits'.
6 M
8 (b) Briefly describe the different methods of economic analysis of a highway.
8 M
8 (c) Explain the following with respects to highway financing:
i) BOT
ii) BOOT
iii) Components of VOC.
6 M

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