Download AKTU (Dr. A.P.J. Abdul Kalam Technical University (AKTU), formerly Uttar Pradesh Technical University (UPTU) B-Tech 5th Semester (Fifth Semester) 2017-2018 NCE 502 Transportation Engineering I Question Paper
Paperld Enl- Roll No- Cm
B. TECH.
(SEM V) THEORY EXAMINATION 2017-18
TRANSPORTATION ENGINEERING-I
T ime: 3 Hours T otal Marks: 100
Note: Attempt all Sections. If any missing data required, then choose suitably.
SECTION A
1. Attempt all questions in brief. 2 x 10 = 20
:1. Draw typical cross section of Macadam?s construction.
b. Write short note on IRC.
0. De?ne Kerbs and sholders.
d. What do you understand by setback distance.
e. Explain passenger car unit (PCU).
f. Write any two advantage and disadvantage of traf?c signals.
g. What is kerb marking and object marking?
h. Explain Flash and ?re point in bitumen.
i. Discuss Expansion and Contraction joint.
j. De?ne Equivalent single wheel load (ESWL).
SECTION B
2. Attempt any three of the following: 10 x 3 = 30
a. Calculate the length oftransition curve and the shift using the following data;
Design speed = 65 kmph
Radius of circular curve = 220 m
Allowable rate of introduction of superelevation (pavement rotated about the
centre line) = l in 150
Pavement width including extra widening = 7.5 m
b. What are the various surveys to be carried out before planning a highway
system for a given area? Explain brie?y.
0. Calculate the stresses at interior, edge and corner of a cement concrete
pavement by Westergaard's stress equations :
Modulus of elasticity of concrete = 3.0 x105 kg/crn2 Poison ratio for concrete =
0.15 Thickness of concrete pavement = 18 cm Modulus of subgrade reaction =
8.5 kg/cm2 Wheel load = 5100 kg Radius of loaded area = 15 cm modulus of
subgrade reaction: 6.0 kg/cm3 radius of contact area: 15 cm.
d. Brie?y outline the main features of various road patterns commonly in use.
e. An ascending gradient of l in 50 meets a descending gradient of l in 80.
Determine length of summit curve to provide (a) ISD (b) OSD, for design
speed of 80 kmph. Assume all other data.
SECTION C
3. Attempt any one part of the following: 10 x l = 10
(3) Brie?y discuss the historical development of road construction. What are
salient features of early roman roads? How do these differ from the present day
road construction?
(b) Write a short notes on:
(i) Central road fund
(ii) Nagpur road plan
(iii) Star and Grid pattern
(iv) Jayakar Committee
4. Attempt any one part of the following: 10 x l = 10
(a) Explain the factors based on which the length of valley curve is designed.
Calculate the length of transition curve for a design speed of 80 kmph at
horizontal curve of radius 300 m in rural area. Assume suitable data.
(b) Derive an expression for calculating the overtaking sight distance on a highway
Calculate the stopping sight distance for design speed of 100 kmph. Take the
total reaction time 2.5 seconds and coef?cient of friction = 0.35.
5. Attempt any one part of the following: 10 x l = 10
(a) Explain the following terms :
(i) TrafficVolume
(ii) Traffic Density
(iii) Space Mean Speed
(iv) Passenger Car Units
(b) With neat sketches show various types of traf?c signs and signals, classifying
them in proper groups.
6. Attempt any one part of the following: 10 x l = 10
(:1) Explain the CBR method of pavement design. How is this method useful to
determine thickness of component layers.
(b) List different types of cutbacks. When are these used ? Discuss in brief the tests
carried out on cutback bitumen ?
7. Attempt any one part of the following: 10 x l = 10
(21) Write short notes on :
(i) Seal coat
(ii) Sheet asphalt
(iii) Mastic asphalt
(b) Discuss the speci?cation of course aggregate and binding materials required in
WBM construction. Further explain how the following steps in WBM
Construction are carried out:
(i) Spreading of course aggregates
(ii) Application of binding material
This post was last modified on 29 January 2020