BARC CE 2018 "Soil Mechanics & Foundation Engg." Nuclear Quiz 2

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Question 1

The plasticity characteristics of clays are due to

• Aadsorbed water
• Bfree water
• Ccapillary water
• Dnone of these

Question 2

A fine grained soil is found to be plastic in the water content range of 26-48%. As per Indian Standard Classification System, the soil is classified as

• ACL
• BCH
• CCL-ML
• DCI

Question 3

The relationship between porosity, specific yield (S_y) and specific retention (S_r) of an unconfined aquifer is

• AS_{y +} S_{r =}
• BS_{y -} S_{r =}
• CS_{y +} S_{r = -}
• DS_{y -} S_{r = -}

Question 4

A fully saturated capillary zone of thickness 1.5 m exists above water table in fine silty sand deposit, then the pore water pressure (in kN/m²) at 1 m above the water table is

• A9.81
• B– 9.81
• C14.72
• D– 14.72

Question 5

Uplift pressures at paints E and D (Figure A) of a straight horizontal floor of negligible thickness with a sheet pile at downstream end are 28% and 20%, respectively. If the sheet pile is at the upstream end of the floor (Figure B), the uplift pressures at points D₁ and C₁ are

• A68% and 60% respectively
• B80% and 72% respectively
• C88% and 70% respectively
• D100% and zero respectively

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