A two lane single carriage-way is to be designed for a design life period of 15

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Question
A two lane single carriage-way is to be designed for a design life period of 15 years. Total two-way traffic intensity in the year of completion of construction is expected to be 2000 commercial vehicles per day. Vehicle damage factor = 3.0, Lane distribution factor = 0.75. Assuming an annual rate of traffic growth as 7.5%, the design traffic expressed as cumulative number of standard axles, is
Options
A. 42.9 x 10⁶
B. 22.6 x 10⁶
C. 10.1 x 10⁶
D. 5.3 x 10⁶

Correct Answer

42.9 x 10⁶

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3. The focal length of the object glass of a tacheometer is 200 mm, the distance between the vertical axis of the tachometer and the optical centre of the object glass is 100 mm and the spacing between the upper and lower line of the diaphragm axis is 4 mm. With the line of collima-tion perfectly horizontal, the staff intercepts are 1 m (top), 2 m (middle), and 3 m (bottom). The horizontal distance (m) between the staff and the instrument station is
Options
A. 100.3
B. 103.0
C. 150.0
D. 153.0

4. Flocculation is a process
Options
A. that removes algae from stabilization pond effluent
B. that promotes the aggregation of small particles into larger particles to enhance their removal by gravity
C. both (a) and (b)
D. none of these.

6. A mild steel specimen is under uni-axial tensile stress. Young's modulus and yield stress for mild steel are 2 x 10⁵ MPa and 250 MPa respectively. The maximum amount of strain energy per unit volume that can be stored in this speciment without permanent set, is
Options
A. 156 Nmm/mm³
B. 15.6 Nmm/mm³
C. 1.56 Nmm/mm³
D. 0.156 Nmm/mm³

7. When a retaining wall moves away from the backfill, the pressure exerted on the wall is termed as
Options
A. passive earth pressure
B. swelling pressure
C. pore pressure
D. active earth pressure

9. The toughness index of clayey soils is given by
Options
A. Plasticity index/Flow index
B. Liquid limit/Plastic limit
C. Liquidity index/Plastic limit
D. Plastic limit/Liquidity index

10. On an immersed body in a flowing fluid the lift force is :
Options
A. due to buoyant force
B. always in the opposite direction to gravity
C. due to Wake phenomenon
D. the dynamic fluid-force component normal to approach velocity

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