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(08 Marks)(06 Marks)

(06 Marks)

Fifth Semester B.E. Degree Examination, Dec.2013 I Jan.2014Transportation Engineering - I

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Note: l. Answer any FIVEfull questions, selectingatleast Tll/O questions from each part.

2. Any missing data may be suitably assumed.

PART - Ala.

b.

2a.b.

c.

Explain,lhe various characteristics of road transport.Expraln1[€ varlous cnaraoterlsucs or roau Lransport. ,,"',, ,,,.. .\is_qExplainbriefly the contribution of the following in the road development in India.i) Indian Rgads Congress iD Central Road Research Institute.

c. Discuss the role of,transportation in the development of a country.

Write a note on road patterns.

3a.b.c.

a.

b.

c.

Explain briefly the objeetives and the functions of :,,i) PMGSY ii) K SHIP. (06 Marks)Four new road links A, B, C and D are to be constructed during a 5 year plan period.Suggest the order of priofity f,or phasing 1he . road construction programme based onmaximum utility approach. Assume utility units of 0.5, 1.0,2 and 4 for the four populationranges and 1 per 1000 tonnes,500 tonnesand 100 tonnes of agricultural, raw material and

(08 Marks)

Roadlink

Lengthkm

No. of villages servedwith population range

Productivity served, in tonnes

< 500 5Gl-,,t000

1001 -2000 2000

Agricultural Rawmaterial

Industrialproducts

A 70 30 ,' 18 8 a-) .,8CI00 4000 I 000

B 45 11 7 6 J 6000 1000 1600

C 65 23 7 5 5 4s00 2000 3200D 60, . 38 4 a

-l -) 4000 ,,,6000 s00

Write a note on engineering surveys to be conducted in a highway alignrnent. (05 Marks)Explain the various factors governing the geometric design of a highway. (06 Marks),Explain the objectives of providing : i) Camber ii) Shoulders iii) Overtaking zone.

"' . (OgMarks)

List the objects of providing : i) Super elevation ii) Extra widening of pavement onhorizontal curves. (06 Marks)Why vertical curves are provided? Explain different types of vertical curves. (05 Marks)A NH passing through a flat terrain has a horizontal curve of radius equal to the rulin$-minimum radius. If the design speed is 100 kmph, calculate the i) Design super elevationii) Extra widening and iiD Length of transition curve by making suitable assumptions.

(09 Marks)

PART. BWrite a note on HRB soil classification. (06 Marks)Differentiate between : i) Bitumen and Tar i0 Cut back and emulsion. (06 Marks)

5a.b.

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c. Following test data is collectedCBR value.

in a soil subgrade specimen.

a. Write a note on NPV method. I

b. Briefly explain the various highway,user bene{its.

c. Compare the annual costs of two'tibes of pavements given below :

cost of Rs 0.5 lakhs per km and

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Plot the data and determine the(08 Marks)

(06 Marks)(06 Marks)

6

Penetration(mm)

0 0.5 1.0 1.5 2.0 2.5 3.0 4.0 5.0 7.5 10.00 12.50

Load (ke) 0 5 16.2 28.t 40 49 5l 67 75.2 89.0 99.s 106.5

a. Draw the typical cross - section of highway flexible pavement and explain the function of:," €ach one of these. (06 Marks)

b. W&al is ESWL? Explain its significance in pavement design. (06 Marks)

c. Calculate the warping stresses at interior, edge and corner region in a 25cm thick concretepur.*eirt with transverse joints at 1 I m interval and longitudinal joints at 3.6minterval. Themodulus of subgrade reaction is 6.9kg/cm'. Assume temperature difference for dayconditions to be 0.60C per cm of slab thickness. Assume radirs of loaded area as 15cm.C,:1.03 and Q,,:= 0.55, E:3 * 105kg/cm2, p:0.15. " (08 Marks)

a. Write the specifications for materials and step by step construction procedure forBituminous concrete. (06 Marks)

b. What is WMM? Describe the rnethod of constructin$ wet mix Macadam roads. (06 Marks)c. Indicate any two methods of sub surface drainagb. Explain with sketches. (08 Marks)

D WBM with thin bituminous su/face at a total cost of Rs 3 lakhs per km, Life of 10 years,interest at 70%:o, salvage value of Rs 1 lakhafur 10 years, annual average maintenance

ii) Bituminous Macadam base and bituminous concrete surface with total cost of Rs 5 lakhsper km, life of ,1'5,years, interest at 8Yo, salvage value of Rs 2 lakhs at the end of 15

years, annuaf iiveiage maintenance cost of Rs 0.3 lakhs per km. (08 Marks)

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