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GATE 2019 Transportation Engineering Day 5 Quiz

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Question 1

The variation of rigidity factor for a tyre pressure is stated as:

Question 2

The equivalent radius resisting section of 20 cm slab, if the ratio of radius of wheel load distribution to thickness of slab is 0.73 is

Question 3

For a 25cm thick cement concrete pavement, analysis of stresses gives the following values
Description: D:\GradeStack Courses\GATE Tests (Sent by Ravi)\Civil Engg\Civil Engineeing-01-Apr\Civil-Engineering-2005-01-Apr_files\image145.png
The most critical stress value for this pavement is

Question 4

The width of the expansion joint is 20mm in a cement concrete pavement. The laying temperature is 20 °C and the maximum slab temperature in summer is 60 °C. The coefficient of thermal expansion of concrete is 10 x 10–6 mm/mm / °C and the joint filler compresses upto 50% of the thickness. The spacing between expansion joints should be

Question 5

The state of two dimensional stresses acting on a concrete lamina consists of a direct tensile stress, σx = 1.5 N/mm2, and shear stress t =1.20 N/mm2, which cause cracking of concrete. Then the tensile strength of the concrete in N/mm2 is

Question 6

Consider the following statements regarding pavements:
1) Rigid pavements are more suitable than flexible pavements for stage construction.
2) Rigid pavements are more affected by temperature variations than flexible pavements.
3) In a flexible pavement, any deformation in the top layers is transferred to underlaid layers; but, in rigid pavements, there is slab or beam action due to which any deformation is only in the top layer of the concrete slab.
Which of the above statements are correct?
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Sep 29ESE & GATE CE