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Reg No.: Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
SIXTH SEMESTER B.TECH DEGREE EXAMINATION(R&S), MAY 2019

Course Code: CE308
Course Name: TRANSPORTATION ENGINEERING - I

Max. Marks: 100 Duration: 3 Hours
PARTA
Answer any two full questions, each carries 15 marks. Marks
1 a) Explain briefly the classification of highways by Nagpur Road Plan. How is this (8)
system of classification modified as per the Third Twenty Year Road Development
Plan?

b) What are the requirements of an ideal alignment? What are the precautions to ‏عط‎ (7)
observed while aligning hill roads?

2 8) What are the factors influencing the geometric design of highways? Explain how (8)
these factors influence the geometric design standards of a highway.

0) Find safe over taking sight distance for a highway having a design speed of 80 (7)
kmph. Maximum acceleration of overtaking vehicle is 1.5 kmph per sec.

3 >) Enumerate the steps for practical design of super elevation of a highway under (4)
mixed traffic conditions.

0) A National Highway passing through plain terrain (Design speed 100 kmph) ina (6)
heavily rainfall area has a horizontal curve of radius 500 m. Design the length of
transition curve. Allowable rate of introduction of super elevation is 1 in 150.

c) A vertical summit curve is formed when an ascending gradient of 1 in 40 meetsa (5)
descending gradient of | in 80. Find the length of summit curve to provide the
required stopping sight distance for a design speed of 80 kmph.

PART B
Answer any two full questions, each carries 15 marks.
4 a) Explain the desirable properties of aggregates as a highway material. (9)

b) State the major differences between flexible and rigid pavements. (6)

5 2) What are the factors to be considered in design of flexible pavements and indicate (8)

their significance.

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