Download AKTU (Dr. A.P.J. Abdul Kalam Technical University (AKTU), formerly Uttar Pradesh Technical University (UPTU) B-Tech 6th Semester (Sixth Semester) 2018-2019 RCE603 Transportation Engineering Question Paper
Paperld- ROHNO-I I I I I I I I I I I
B.TECH
(SEM VI) THEORY EXAMINATION 2018-19
TRANSPORTATION ENGINEERING
T ime: 3 Hours T and Marks: 70
Note: 1. Attempt all Sections.
2. Any data if missing may be suitably assumed.
SECTION A
1. Attempt all questions in brief. 2 x 7 = 14
Define bump integrator.
Differentiate between skid and slip in highway engineering.
Enlist various road patterns.
List the conditions under which summit curve is used.
Define possible capacity and Basic capacity.
What do you understand by wrapping stresses & temperature stresses?
Differentiate between tack coat and prime coat.
mwagecw
SECTION B
2. Attempt any three of the following: 7 x 3 = 21
a. Write salient features of first twenty year road development plant.
b. A vehicle moving at 40 km/h speed was stopped by applying brake and the length
of the skid mark was 12.2 m. If the average skid resistance of the pavement is 0.70,
the brake efficiency of the test vehicle will be nearly?
0. What is the extra widening required (as nearest magnitude) for a pavement 0f 7 m
width on a horizontal curve of radius 200 m, if the longest wheel of vehicle
expected on the road is 6.5 m and the design speed is 65 km/h?
(1. Consider the following data with respect to the design of ?exible pavement:
Design wheel load = 4200 kg
Tyre pressure = 6.0 kg/cm2
Elastic modulus = 150 kg/cm2
Permissible de?ection = 0.25 cm
(take n1/2 = 1.77, n'1/2 = 0.564,
1m: 0.318, and n2 = 9.87)
The total thickness of ?exible pavement for a single layer elastic theory will be
nearly?
e. Write short notes on i) sheet asphalt ii) mastic asphalt. iii)Bituminous carpeting
SECTION C
3. Attempt any one part of the following: 7 x 1 = 7
(a) Discuss the cross sectional elements of the roads considered for design. Draw a
neat sketch of cross section of 2 lane road with dual carriageway and median in rural
area.
(b) Determine the length of transition & circular curves for the following data:
2 lane pavement of width 7 m on NH on a rolling terrain having radius 65 m. Design
Printed Pagesz2 Sub Code: RCE603
speed is 45km/hr.
4. Attempt any one part of the following: 7 x 1 = 7
(a) What are the objectives of highway research board? Brie?y explain the role of
MORTH and IRC in highway development.
(b) Write brief notes on:
i) Central road fund
ii) Indian road congress
iii)Centra1 road research institute
5. Attempt any one part of the following: 7 x 1 = 7
(a) What is mean by minimum gradient in highway? Why it is provided?
A valley curve is formed due to two gradients +35% and -2.75%.if the design speed
of this highway is 80kmph, determine the stopping sight distance and design the
valley curve to fulfill both comfort and head light distance conditions.
(b) State the limitations of CBR method of pavement design & also enlist the
different tests on road aggregates.
6. Attempt any one part of the following: 7 x 1 = 7
(a)Calcu1ate the stresses at interior & edge of a cc pavement by westergaard?s
equation:
n of concrete
=0. 15 h =18 cm
k=6.0 kg/cm
radius of contact area =15 cm
Wheel load P = 5500 kg
Modulus of elasticity of concrete = 3 X105
kg/cmz. Where dowels bars are used?
(b) Write short notes on: Bituminous Macadam (BM), Semi dense bituminous
concrete (SDBC) and Bituminous concrete, Dry lean concrete (DLC) Cement
Concrete (CC) road construction, Roller Compacted Concrete Roads.
7. Attempt any one part of the following: 7 x 1 = 7
(a) Explain i) 3Oth highest hourly traffic volume with neat graph.
The width of a carriage way approaching an intersection is given as 15 m. The entry
and exit width at the rotary is 10 m. The traffic approaching the intersection from the
four sides is shown in the figure below. Find the capacity of the rotary using the
given data:
N
1433
??? 375 408 600
650
w 1405 505 50930 E
510 350 250
4 370
1 140
S
Fiulu'n- Traf?c upprnm'hing 11w rumn?
(b) A national highway passing through a rolling terrain has two horizontal curves
of radius 450 m and 150 m. Design the required super?elevation for the curves as
per IRC guidelines.
Printed Pagesz2
Sub Code: RCE603
FirstRanker.com | 23-May-2019 13:29:48 | 45.115.62.2
This post was last modified on 29 January 2020