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GATE CE: Transportation Engineering Champion Quiz 1

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Question 1

IS: 1343 - 1980 limits the minimum characteristic strength of pre-stressed concrete for post tensioned works and pretension work as

Question 2

During a CBR test, the load sustained by a remoulded soil specimen at 5.0 mm penetration is 50 kg. The CBR value of the soil will be

Question 3

For a 25cm thick cement concrete pavement, analysis of stresses gives the following values
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The most critical stress value for this pavement is

Question 4

Temperature stresses in concrete pavements may cause the slab to crack. If a slab cools uniformly then the crack will develop at the following locations of the slab

Question 5

Consider the following statements in the context of cement concrete pavements.
I: Warping stresses in cement concrete pavements are caused by the seasonal variation in temperature
II: Tie bars are generally provided across transverse joints of cement concrete pavements
The correct option evaluating the above statement is

Question 6

Which of the following stress combinations are appropriate in identifying the critical condition for the design of concrete pavements?
Type of Stress
P. Load
Q. Temperature
Location
1) Corner
2) Edge
3) Interior

Question 7

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 8

A 16 mm thick plate measuring 650 mm × 420 mm is used as a base plate for an ISHB 300 column subjected to a factored axial compressive load of 2000 kN. As per IS 456–2000, the minimum grade of concrete that should be used below the base plate for safely carrying the load is

Question 9

The state of two dimensional stresses acting on a concrete lamina consists of a direct tensile stress, σ_x = 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 10

Using IRC: 37 - 1984 “Guidelines for the Design of Flexible Pavements” and the following data, choose the total thickness of the pavement.
No. of commercial vehicles when construction is completed= 2723 veh/day
Annual growth rate of the traffic = 5.0%
Design life of the pavement = 10 years
Vehicle damage factor = 2.4
CBE value of the subgrade soil = 5%
Data for 5% CBR value
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