JNTU Kakinada B-Tech 3-1 RT31015 I TRANSPORTATION ENGINEERING – I R13 April 2018 Question Paper

|”|”|||”|”’|||’|

Code No: RT31015
III B. Tech I Semester Supplementary Examinations, May-2018
TRANSPORTATION ENGINEERING ? I (Civil Engineering)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B) 2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
PART ?A
1 a) What is the necessity of highway planning? [3M]
b) Write about highway cross sectional elements? [4M]
c) Write about PCU factors. [4M]
d) What are highway materials? Explain. [3M]
e) Write about various types of pavements. [4M]
f) What is Overlay? Discuss about various types of Overlays. [4M]
PART -B
2 a) Write about various road patterns? [4M]
b) Compare Nagpur & Bombay Road development plans? [8M]
c) What are the differences between good and improper alignment?
[4M]
3 a) Discuss the design factors of horizontal alignment. [3M]
b) Calculate the safe stopping distance for design speed of 50kmph for two-way
traffic on a two lane road. Assume coefficient of friction as 0.35 and reaction
time of driver as 2.5seconds.
[8M]
c) The design speed of highway is 90kmph and radius R=200m. Check for safety.
[5M]
4 a) Discuss the relation between parameters of Traffic-Volume, Speed and
Density.
[8M]
b) Discuss the guidelines of IRC method of Signals.
[8M]
5 a) Write about Aggregate Impact Test. [8M]
b) Write about Marshall Mix Design.
[8M]
6 a) Compare various aspects of flexible and rigid pavement. [8M]
b) Calculate the stresses at the corner and edge regions of a cement concrete
pavement using westerguard equations with the following data.
? Radius of relative stiffness (l)=20cm
? Wheel load (P)=4500 kg
? Modulus of elasticity of cement concrete (E) =3×10^5 kg/cm2
? Pavement thickness (h) =18cm
? Modulus of sub grade reaction (k)=6.0 kg/cm3
? Radius of contact area (a)=15cm
[8M]
7 a) Write the construction process of bitumen pavement. [8M]
b) Discuss about various failures of rigid pavements
[8M]
*****
R13
SET – 1