GTU previous question papers -BE- Sem-Vth – Highway Engineering-June- 2011

GTU previous question papers

GUJARAT TECHNOLOGICAL UNIVERSITY

B. E. Sem. – V – Examination – June- 2011

Subject code: 150601

Subject Name: Highway Engineering

Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

Q.1 (a) Discuss about various road authorities working in highway planning and development in India.

(b) Discuss about maintenance of highway along with failures of flexible and rigid pavements.

Q.2 (a) Discuss about various engineering surveys to be carried out before a

highway alignment is finalized in highway project.

(b) Enlist various components of highway. Sketch cross section of divided highway in urban area.

OR

(b) The speed of overtaking and overtaken vehicles is 80 kmph and 50 kmph

respectively on a two way traffic road. The acceleration of overtaking

vehicle is 0.99 m/sec2 .Calculate Safe overtaking sight distance and

minimum length of overtaking zone. Also draw sketch of overtaking zone

and show the positions of sign posts.

Q.3 (a) Enlist the types of horizontal and vertical curves.

Calculate the extra widening required for a two lane pavement on a

The longest wheel base of vehicle expected on the road is 7.0m.

Design speed is 60 kmph.

(b) (i)Write physical and engineering properties of road aggregates.

(ii) Find out CBR value for soil subgrade for 1200 ADT of commercial

vehicle .Annual growth rate of traffic is 8%.Construction period is 3 years.

Loads at 2.5 mm and 5.0 mm penetration are 55 and 78 kg respectively. Also find out number of vehicles per day for design.

OR

Q.3 (a) Evaluate wheel load stresses for a 18 cm thick cement concrete pavement.

Poisson’s ratio of concrete is 0.15.

Radius of contact area is 15 cm.

Modulus of elasticity of cement concrete is 3.00 x 105 kg/cm2 .

Modulus of subgrade reaction is 6.0 kg/cm3 .

(b) ( i ) Write about empirical method-Group Index for pavement design.

( ii ) Calculate superelevation required for a horizontal circular curve of

radius 97 m. The design speed is 60 kmph and design coefficient of lateral friction is 0.15.

Q.4 (a) ( i )Write about design of filter material in highway drainage.

( ii ) Role of arboriculture in aesthetics value of highway.

(b) ( i ) Explain the terms: Skid and Slip.

( ii ) Write in brief about low cost and high cost roads.

OR

Q.4 (a) ( i ) What is PPP models?

( ii ) State elementary principles of alignment in hilly areas.

(b) ( i ) What are the methods of highway financing?

( ii )Write recommended values of Camber and Right of way.

Q.5 (a) ( i ) What is roaduser characteristics?

( ii )Write causes of accident.

(b) Discuss about various traffic control devices.

OR

Q.5 (a) Sketch various types of intersection. Which types of movements are

observed at an intersection? Write design criteria for intersection.

(b) ( i ) Draw relationship between flow, speed and density.

( ii ) what is off street parking?