Highway Engineering I -5th Semester Question Papers(Diploma in Civil Engineering)

Program: Diploma in Civil Engineering  Full Marks: 80
Year/Part: ΠΙ/Ι (2013)           Pass Marks: 32
Subject:Highway Engineering I   Time: 3 hrs.

Candidates are required to give their answers in their own words as far as practicable. The figures in the margin indicate full marks.

Attempt any FIVE questions.

1.a.) Define transportation system. Explain the importance of road transportation system.[2+6]

   b.) What are the road classification as per NRS? Write the difference between Tresaguet and Telford road construction technique.[3+5]

2. a.) Define highway alignment. What are the special consideration while aligning roads in hilly areas?[2+6]

   b.) Define camber in highway. Show cross sectional elements of highway in a heat sketch and describe in short.[1+7]   WWW.BIBEK.COM

3.a). What are gradient and grade compensation? What are the factors governing the selection of gradient? Mention different types of gradient provided in highway. [2+4+2]

b.) Define super elevation. In a region of heavy rainfall, a major district road of WBM pavement is to be constructed. If the width of the road is 3.75m, find the height of the crown with respect to the edges. What would be the height of crown with respect to the edges if 7.5m width bituminous concrete pavement is to be constructed? [2+6]

4.a.) Two cars are approaching from opposite directions at 90 Kmph and 60 Kmph; calculate the minimum sight distance needed to prevent a head on collision of two cars. Assume a reaction time 2.5 seconds, coefficient of friction 0.7 and break efficiency of 50% for each car.[8]

  b.) While measuring angle by theodolite at a certain deviation point by setting zero along preceding deviation point, the reading was equal to 230°40'45". The radius of circular curve to be provided was 200m.Calculate the elements of curve.[8]

5.a.) How highway drainage system is classified? Describe different component part of slab culvert with neat sketches. [3+5]

 b.)Describe procedure for Los Angeles Abrasion Test on road aggregate What is penetration value of bitumen and describe its procedure in brief?[4+4]

6.  Write short notes on: (any FOUR)  [4x4]
a.) Properties of good road aggregates
b.)Methods of providing extra widening 
c.) Subsurface drainage system
d.) Obligatory points for controlling alignment of road
e.)  Ductility test of bitumen 

                                               Good Luck!

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