1. A soil sample is having a specific gravity of 2.60 and a void ratio of 0.78. The water content in percentage required to fully saturate the soil at that void ratio would be 30%.
2. A loose uniform sand with rounded grains has effective grain size of 0.05 cm. Co-efficient of permeability of the sand is 0.25 cm/sec
3. If flow net of a coffer dam foundation had 6 numbers of flow channels and 16 numbers of equipotential drops, with the head of water lost during seepage being 6 m through foundation having k= 4*10^(-5) m/min, then seepage loss (in m^3/day) per meter length of the dam will be 12.96 * 10^(-2)
4. Properties of flow net are: Flow lines are perpendicular to equipotential lines, No two flow lines or equipotential lines start from the same point and no two flow lines cross each other.
5. Flownet drawn for a weir; total head loss is 6 m, number of potential drops is 10 and length of the flow path for the last square is 1 m. The exit gradient is 0.6.
6. In a saturated soil deposit having a density of 22 kN/m^3, the effective normal stress on a horizontal plane at 5 m depth will be 60 kN/m^2
7. Average pore water pressure in a fully saturated clay specimen, which was subjected to a pressure of 20 N/cm^2 initially, was measured to be 7 N/cm^2 after a period of time. Degree of consolidation reached at that time is 65%.
8. Water is flowing at the rate of 0.1 cc/sec in an upward direction through a sand sample with k = 2*10^(-3) cm/sec. Thickness of sand sample is 10 m and sectional area is 50 cm^2. The effective stress at middle of sample if Ysat = 2 t/m^3 is
9. In a drained tri-axial compression test, a saturated specimen of a cohesion-less sand fails under a deviating stress of 3 kgf/cm^2 when cell pressure is 1 kgf/cm^2. The effective angle of shearing resistance of sand is about 45 degrees + friction angle.
10. A un-drained tri-axial compression test is carried out on a saturated clay sample under a cell pressure of 100 kN/m^2. If sample failed at a deviator stress of 200 kN/m^2, then cohesion of the given sample of clay is 100 kN/m^2.
Reference : GK publishers
2. A loose uniform sand with rounded grains has effective grain size of 0.05 cm. Co-efficient of permeability of the sand is 0.25 cm/sec
3. If flow net of a coffer dam foundation had 6 numbers of flow channels and 16 numbers of equipotential drops, with the head of water lost during seepage being 6 m through foundation having k= 4*10^(-5) m/min, then seepage loss (in m^3/day) per meter length of the dam will be 12.96 * 10^(-2)
4. Properties of flow net are: Flow lines are perpendicular to equipotential lines, No two flow lines or equipotential lines start from the same point and no two flow lines cross each other.
5. Flownet drawn for a weir; total head loss is 6 m, number of potential drops is 10 and length of the flow path for the last square is 1 m. The exit gradient is 0.6.
6. In a saturated soil deposit having a density of 22 kN/m^3, the effective normal stress on a horizontal plane at 5 m depth will be 60 kN/m^2
7. Average pore water pressure in a fully saturated clay specimen, which was subjected to a pressure of 20 N/cm^2 initially, was measured to be 7 N/cm^2 after a period of time. Degree of consolidation reached at that time is 65%.
8. Water is flowing at the rate of 0.1 cc/sec in an upward direction through a sand sample with k = 2*10^(-3) cm/sec. Thickness of sand sample is 10 m and sectional area is 50 cm^2. The effective stress at middle of sample if Ysat = 2 t/m^3 is
9. In a drained tri-axial compression test, a saturated specimen of a cohesion-less sand fails under a deviating stress of 3 kgf/cm^2 when cell pressure is 1 kgf/cm^2. The effective angle of shearing resistance of sand is about 45 degrees + friction angle.
10. A un-drained tri-axial compression test is carried out on a saturated clay sample under a cell pressure of 100 kN/m^2. If sample failed at a deviator stress of 200 kN/m^2, then cohesion of the given sample of clay is 100 kN/m^2.
Reference : GK publishers
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