Transportation Engineering Rr320106

Set No. 1

Code No: RR320106

III B.Tech II Semester Regular Examinations, Apr/May 2007 TRANSPORTATION ENGINEERING (Civil Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. (a) What are obligatory points? How do they affect road alignment? Explain by giving suitable sketches wherever needed. (b) Explain briefly the modified classification of road system in India as per the Third twenty year road development plan, 1981-2001. [8+8] 2. (a) Define road gradient and mention its various types. Explain briefly. (b) Calculate the super elevation is a road curve of 120 m radius with vehicle traveling at 96 kmph. The width of the road in 15 m and coefficient of friction is 0.12. [8+8] 3. (a) Explain how the speed and delay studies are carried out. What are the various uses of speed and delay studies. (b) What are the applications of location file, spot maps, collision diagrams and condition diagrams? [8+8] 4. (a) Under what circumstances rotary is justified ? Give a neat sketch of rotary intersection and indicate various components. (b) Give the classification of traffic signs, explain their standards and specifications. [8+8] 5. What are the various factors to be considered in the pavement design? Discuss the significance of each. [16] 6. (a) Briefly explain about the use of fish plates, chairs and keys in a railway track as some of the most important fastenings. (b) What is the role played by sleepers in a railway track? Explain. Also discuss the merits and demerits of different types of sleepers. [8+8] 7. (a) Give the classification of signals according to their locations in station yards with the help of suitable sketches. (b) A curve of 60 is situated on a BG track. If the maximum permissible speed on curve is 65 kmph, determine the equilibrium cant. What is the maximum speed that can be permitted allowing maximum cant deficiency? [8+8] 8. (a) What are the geometric elements associated with a runway? Give their design standards. (b) What are the characteristics of jet aircraft? Explain. [8+8] ⋆⋆⋆⋆⋆ 1 of 1

Set No. 2

Code No: RR320106

III B.Tech II Semester Regular Examinations, Apr/May 2007 TRANSPORTATION ENGINEERING (Civil Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. (a) Describe the classification of rural highways adopted in India. (b) What are the requirements of a good highway alignment ? What factors influence the alignment of highways? Explain. [8+8] 2. (a) Define road gradient and mention its various types. Explain briefly. (b) Calculate the super elevation is a road curve of 120 m radius with vehicle traveling at 96 kmph. The width of the road in 15 m and coefficient of friction is 0.12. [8+8] 3. (a) What are the various types of traffic accidents ? Discuss the method of analyzing the speed of vehicles involved in the accident (b) Explain how the traffic volume data is presented and the results used in traffic engineering. [8+8] 4. (a) Explain briefly the various design factors that are to be considered in rotary intersection design. (b) What are traffic islands? Mention different types of islands.

[8+8]

5. (a) What are the assumptions made by Westergaard in the analysis of rigid pavements? With the help of neat sketches explain the critical loading positions suggested by Westergaard. (b) Explain how the maintenance of the Cement concrete roads is carried out. [8+8] 6. (a) Give a neat sketch of permanent way and indicate the components. Also explain the role of sleepers in railway track. (b) Explain different materials used for ballast and their relative merits.

[8+8]

7. (a) Write short notes on: i. Curves ii. Compensation for curves on grades. (b) Describe briefly one method of interlocking used on Indian Railways.

[8+8]

8. What is meant by the basic runway length? Discuss the three cases to be considered. [16] ⋆⋆⋆⋆⋆ 1 of 1

Set No. 3

Code No: RR320106

III B.Tech II Semester Regular Examinations, Apr/May 2007 TRANSPORTATION ENGINEERING (Civil Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. (a) What are the common types of road patterns? With sketches indicate the important features of each. (b) What considerations play a vital role in a new highway route location? Explain. [8+8] 2. (a) What are the general controls to be kept in view in determining the horizontal alignment of road. (b) A highway of width 7.5 m radius 150 m with a speed of 120 kmph and the length of the wheel base 7.0 m. Find the extra widening required. [8+8] 3. (a) Explain how the speed and delay studies are carried out. What are the various uses of speed and delay studies. (b) What are the applications of location file, spot maps, collision diagrams and condition diagrams? [8+8] 4. (a) What are road junction or intersection? What are the factors to be considered in their design and operation. (b) With neat sketches show various types of traffic signs, classifying them in proper groups. [8+8] 5. What are the various factors to be considered in the pavement design? Discuss the significance of each. [16] 6. (a) Categorise types of rail wear and enumerate the methods by which wear in rails can be measured. (b) What are the functions of ballast in a railway track? Explain. [8+8] 7. (a) Define Interlocking and explain the principle of interlocking. Describe the various mechanical devices used for Interlocking. (b) What do you understand by 'Negative superelevation' ? When from layout of a B.G. yard, a 80 curve branches off from a 40 main curve in an opposite direction. If speed is restricted to 28.95 kmph and permissible value of cant deficiency is 7.61 cm, determine the speed restriction on the main line. [8+8] 8. (a) What do you understand by the term basic runway length? Explain the procedure of determining the actual runway length required at a particular site. (b) Explain the classification of airport obstruction. [8+8] ⋆⋆⋆⋆⋆ 1 of 1

Set No. 4

Code No: RR320106

III B.Tech II Semester Regular Examinations, Apr/May 2007 TRANSPORTATION ENGINEERING (Civil Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ⋆⋆⋆⋆⋆ 1. (a) Give the comparison of first 20-year road plan and second 20-year road plan with respect of their salient features. (b) Explain the engineering surveys needed for highway project.

[8+8]

2. (a) Discuss the methods of providing super elevation. (b) A road is on the down grade of 5%. Calculate the stopping sight distance for the road when design speed is 60 kmph, coefficient of friction between the road and vehicle tyre is 0.42 and the reaction time of driver is 3 seconds. [8+8] 3. (a) Discuss the various traffic studies and their importance. (b) Explain various measures that may be taken to prevent accidents.

[8+8]

4. (a) Enumerate various types of intersections and basic principles involved in the design of intersection. (b) What is an accident? In detail discuss the causes and preventative measures of accidents. [8+8] 5. What are the various factors to be considered in the pavement design? Discuss the significance of each. [16] 6. Give the functions of rails. Name the types of rails. Sketch a rail section currently in use. How is the weight of rail section usually determined. [16] 7. (a) When negative superelevation is required in the geometric design of a railway track? Explain. (b) Explain the necessity of grade compensation at curves. The ruling gradient has been fixed as 1 in 200 on a section of B.G. track. What should be the compensated gradient when a 40 horizontal curve is also to be introduced on this ruling gradient? [8+8] 8. What is meant by the basic runway length? Discuss the three cases to be considered. [16] ⋆⋆⋆⋆⋆

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