GATE CE 2022: Transportation Engineering & Surveying Quiz #4
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Statement-I: Load Stresses are inversely proportional to wheel load.
Statement-II: Modulus of subgrade reaction is useful for load stress calculation.
Which of the following options are correct?
Bradbury coefficients Cx and Cy are 0.7 & 0.8 respectively. The radius of contact between the road and tyre = 0.15 m, the temperature gradient during night = 15 oC.
Find the warping stress (in MPa) at the edge of the rigid pavement.
Wheel load stress due to corner loading = 25 kg/cm2
Wheel load stress due to edge loading = 27 kg/cm2
Warping stress at corner region during winter = 7 kg/cm2
Warping stress at edge region during winter = 5 kg/cm2
Warping stress at corner region during summer = 10 kg/cm2
Warping stress at edge region during summer = 8 kg/cm2
Frictional stress at edge region during summer= 5 kg/cm2
Frictional stress during winter = 4 kg/cm2
The most critical stress value for this pavement is ________ kg/cm2.
i. The pavement warps down at mid day
ii. The pavement warps up at mid day
iii. The pavement warps down at mid night
iv. The pavement warps up at mid night
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