Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 4th Sem New 2144003 Basics Of Transportation Engineering Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? IV (New) EXAMINATION ? WINTER 2019
Subject Code: 2144003 Date: 14/12/2019
Subject Name: Basics of Transportation Engineering
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Support your answers with necessary sketches.
MARKS
Q.1 (a) Explain camber. What are the objectives of camber? Discuss the factors on which
amount of camber depends.
03
(b) Briefly explain: Tyre pressure, contact pressure, rigidity factor, ESWL 04
(c) Discuss the MORTH requirements of WMM, DBM, BC, SDBC mixes for
pavement.
07
Q.2 (a) What is road safety audit? Show its process with flow chart. 03
(b) Why extra widening shall be provided on the horizontal curve of highway? Derive
its necessary expression.
04
(c) Design following geometric elements on horizontal curve for the ruling design
speed of 80 kmph.
Ruling minimum radius, Super elevation, Extra widening, Length of transition
curve, SSD, ISD, and set-back distance.
07
OR
(c) An ascending gradient of 1:50 meets a descending gradient of 1:80. Determine the
length of summit curve to provide ISD and OSD, for a design speed of 90 kmph.
Assume all other data.
07
Q.3 (a) Explain special points to be considered while road construction in black cotton
soil.
03
(b) The speed-density relationship of traffic on a section of a freeway lane was
estimated to be vx = 17.5 ln (225/k) as per Greenberg?s model. (a) Find flow, speed
and density at Maximum flow, (b) Find jam density.
04
(c) The loaded wt. on the rear dual wheels of a truck is 5500 kg. The c/c spacing and
clear space in the dual wheels are 30 cm and 10 cm respectively. Calculate the
ESWL for pavement thickness of
(i) 20 cm (ii ) 35 cm (iii) 50 cm
07
OR
Q.3 (a) What are the parameters required as the input for pavements analysis? 03
(b) Explain with sketches Speed-Flow-Density relationships. Derive Greenshield?s
equations for maximum flow condition.
04
(c) Calculate the stresses at interior, edge and corner region of cement concrete
pavement using Westergaard?s stress equations.
Take wheel load = 4100 kg, Ec = 3 x 105 kg/cm2 , Pavement thickness = 20 cm,
? = 0.15, Modulus of subgrade reaction k = 5 kg/cm3, Radius of contact area = 15
cm.
07
Q.4 (a) Describe with sketches failures in rigid pavements. Write the remedial measures
for them.
03
(b) Give detailed comparison between Highway and Runway pavements. 04
(c) A subgrade soil sample has following properties: 07
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Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? IV (New) EXAMINATION ? WINTER 2019
Subject Code: 2144003 Date: 14/12/2019
Subject Name: Basics of Transportation Engineering
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Support your answers with necessary sketches.
MARKS
Q.1 (a) Explain camber. What are the objectives of camber? Discuss the factors on which
amount of camber depends.
03
(b) Briefly explain: Tyre pressure, contact pressure, rigidity factor, ESWL 04
(c) Discuss the MORTH requirements of WMM, DBM, BC, SDBC mixes for
pavement.
07
Q.2 (a) What is road safety audit? Show its process with flow chart. 03
(b) Why extra widening shall be provided on the horizontal curve of highway? Derive
its necessary expression.
04
(c) Design following geometric elements on horizontal curve for the ruling design
speed of 80 kmph.
Ruling minimum radius, Super elevation, Extra widening, Length of transition
curve, SSD, ISD, and set-back distance.
07
OR
(c) An ascending gradient of 1:50 meets a descending gradient of 1:80. Determine the
length of summit curve to provide ISD and OSD, for a design speed of 90 kmph.
Assume all other data.
07
Q.3 (a) Explain special points to be considered while road construction in black cotton
soil.
03
(b) The speed-density relationship of traffic on a section of a freeway lane was
estimated to be vx = 17.5 ln (225/k) as per Greenberg?s model. (a) Find flow, speed
and density at Maximum flow, (b) Find jam density.
04
(c) The loaded wt. on the rear dual wheels of a truck is 5500 kg. The c/c spacing and
clear space in the dual wheels are 30 cm and 10 cm respectively. Calculate the
ESWL for pavement thickness of
(i) 20 cm (ii ) 35 cm (iii) 50 cm
07
OR
Q.3 (a) What are the parameters required as the input for pavements analysis? 03
(b) Explain with sketches Speed-Flow-Density relationships. Derive Greenshield?s
equations for maximum flow condition.
04
(c) Calculate the stresses at interior, edge and corner region of cement concrete
pavement using Westergaard?s stress equations.
Take wheel load = 4100 kg, Ec = 3 x 105 kg/cm2 , Pavement thickness = 20 cm,
? = 0.15, Modulus of subgrade reaction k = 5 kg/cm3, Radius of contact area = 15
cm.
07
Q.4 (a) Describe with sketches failures in rigid pavements. Write the remedial measures
for them.
03
(b) Give detailed comparison between Highway and Runway pavements. 04
(c) A subgrade soil sample has following properties: 07
2
Soil passing 200 no. sieve (0.074 mm) is 50 %, Liquid limit = 45 %, Plastic limit
= 35 %. Design the pavement section by G.I. method for heavy traffic and compare
the value of G.I. using the standard curves.
OR
Q.4 (a) Describe with sketches failures in flexible pavements. Write the remedial measures
for them.
03
(b) Give detailed comparison between Flexible and Rigid pavements 04
(c) Design a suitable bituminous pavement section for a two-lane road with a Single
carriageway. The traffic expected is 600 commercial vehicles per day in both
directions with average vehicle damage factor of 1.8. Design subgrade CBR is 7
% and the assumed design life of the pavement is 12 years. Use Guidelines of IRC
37-2001.
07
Q.5 (a) How the speed and delay studies are carried out? What are its applications? 03
(b) Define: Spot speed, Running speed, SMS, TMS. 04
(c) From the following data of spot-speed study, draw graphs for frequency (%) ?vs-
Speed range and Cumulative frequency (%) - vs- Speed. Also, calculate: Modal
speed, Median speed, TMS, SMS, speed to be used in geometric design, speed for
traffic regulation, standard deviation, coefficient of variation.
Speed
range
(kmph)
0-10 11-
20
21-
30
31-
40
41-
50
51-
60
61-
70
71-
80
81-
90
No. of
vehicles
5 9 15 22 28 21 14 6 3
07
OR
Q.5 (a) Describe with sketches special considerations for Hill Roads construction. 03
(b) Explain Origin and Destination study. What are the uses of it? 04
(c) On the right angled crossing of four arm signalized intersection, design 4 phase
signal cycle for the given data using Webster?s method and IRC recommendations.
Assume, amber = 3 sec/phase, lost time = 2 sec/phase, saturation flow rate=600W
[W= Width of approach (m)], pcu value for the left and right turning vehicles are
25% and 75% more respectively. All left (L), straight (S) and right (R) turning
vehicles on an approach are allowed to depart simultaneously during a green
interval. Road AB crosses road CD at right angle.
Approach A B C D
Width(m) 10 10 9 9
Turning L S R L S R L S R L S R
Volume
(pcu/hr)
400 900 300 300 800 150 100 480 60 120 450 60
07
**********
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1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? IV (New) EXAMINATION ? WINTER 2019
Subject Code: 2144003 Date: 14/12/2019
Subject Name: Basics of Transportation Engineering
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Support your answers with necessary sketches.
MARKS
Q.1 (a) Explain camber. What are the objectives of camber? Discuss the factors on which
amount of camber depends.
03
(b) Briefly explain: Tyre pressure, contact pressure, rigidity factor, ESWL 04
(c) Discuss the MORTH requirements of WMM, DBM, BC, SDBC mixes for
pavement.
07
Q.2 (a) What is road safety audit? Show its process with flow chart. 03
(b) Why extra widening shall be provided on the horizontal curve of highway? Derive
its necessary expression.
04
(c) Design following geometric elements on horizontal curve for the ruling design
speed of 80 kmph.
Ruling minimum radius, Super elevation, Extra widening, Length of transition
curve, SSD, ISD, and set-back distance.
07
OR
(c) An ascending gradient of 1:50 meets a descending gradient of 1:80. Determine the
length of summit curve to provide ISD and OSD, for a design speed of 90 kmph.
Assume all other data.
07
Q.3 (a) Explain special points to be considered while road construction in black cotton
soil.
03
(b) The speed-density relationship of traffic on a section of a freeway lane was
estimated to be vx = 17.5 ln (225/k) as per Greenberg?s model. (a) Find flow, speed
and density at Maximum flow, (b) Find jam density.
04
(c) The loaded wt. on the rear dual wheels of a truck is 5500 kg. The c/c spacing and
clear space in the dual wheels are 30 cm and 10 cm respectively. Calculate the
ESWL for pavement thickness of
(i) 20 cm (ii ) 35 cm (iii) 50 cm
07
OR
Q.3 (a) What are the parameters required as the input for pavements analysis? 03
(b) Explain with sketches Speed-Flow-Density relationships. Derive Greenshield?s
equations for maximum flow condition.
04
(c) Calculate the stresses at interior, edge and corner region of cement concrete
pavement using Westergaard?s stress equations.
Take wheel load = 4100 kg, Ec = 3 x 105 kg/cm2 , Pavement thickness = 20 cm,
? = 0.15, Modulus of subgrade reaction k = 5 kg/cm3, Radius of contact area = 15
cm.
07
Q.4 (a) Describe with sketches failures in rigid pavements. Write the remedial measures
for them.
03
(b) Give detailed comparison between Highway and Runway pavements. 04
(c) A subgrade soil sample has following properties: 07
2
Soil passing 200 no. sieve (0.074 mm) is 50 %, Liquid limit = 45 %, Plastic limit
= 35 %. Design the pavement section by G.I. method for heavy traffic and compare
the value of G.I. using the standard curves.
OR
Q.4 (a) Describe with sketches failures in flexible pavements. Write the remedial measures
for them.
03
(b) Give detailed comparison between Flexible and Rigid pavements 04
(c) Design a suitable bituminous pavement section for a two-lane road with a Single
carriageway. The traffic expected is 600 commercial vehicles per day in both
directions with average vehicle damage factor of 1.8. Design subgrade CBR is 7
% and the assumed design life of the pavement is 12 years. Use Guidelines of IRC
37-2001.
07
Q.5 (a) How the speed and delay studies are carried out? What are its applications? 03
(b) Define: Spot speed, Running speed, SMS, TMS. 04
(c) From the following data of spot-speed study, draw graphs for frequency (%) ?vs-
Speed range and Cumulative frequency (%) - vs- Speed. Also, calculate: Modal
speed, Median speed, TMS, SMS, speed to be used in geometric design, speed for
traffic regulation, standard deviation, coefficient of variation.
Speed
range
(kmph)
0-10 11-
20
21-
30
31-
40
41-
50
51-
60
61-
70
71-
80
81-
90
No. of
vehicles
5 9 15 22 28 21 14 6 3
07
OR
Q.5 (a) Describe with sketches special considerations for Hill Roads construction. 03
(b) Explain Origin and Destination study. What are the uses of it? 04
(c) On the right angled crossing of four arm signalized intersection, design 4 phase
signal cycle for the given data using Webster?s method and IRC recommendations.
Assume, amber = 3 sec/phase, lost time = 2 sec/phase, saturation flow rate=600W
[W= Width of approach (m)], pcu value for the left and right turning vehicles are
25% and 75% more respectively. All left (L), straight (S) and right (R) turning
vehicles on an approach are allowed to depart simultaneously during a green
interval. Road AB crosses road CD at right angle.
Approach A B C D
Width(m) 10 10 9 9
Turning L S R L S R L S R L S R
Volume
(pcu/hr)
400 900 300 300 800 150 100 480 60 120 450 60
07
**********
3
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This post was last modified on 20 February 2020