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Soil Mechanics and Foundation Engineering - Engineering

Q1:

Pick up the incorrect statement from the following:

A The smaller the size of the pores, the higher the water can rise above the water table.

B Below the water table, the pore water may be static.

C The hydrostatic pressure depends on the depth below the water level.

D The attractive forces between the particles, caused due to negative pressure of water held above the water table is called soil suction.

E None of these.

ANS:E - None of these.

  1. The smaller the size of the pores, the higher the water can rise above the water table. - This statement is correct. Smaller pores allow for greater capillary action, which can draw water higher above the water table.
  2. Below the water table, the pore water may be static. - This statement is correct. Below the water table, pore water may be static or under hydrostatic pressure, depending on the conditions and the soil characteristics.
  3. The hydrostatic pressure depends on the depth below the water level. - This statement is correct. Hydrostatic pressure in a fluid (including pore water in soil) increases with depth due to the weight of the fluid above.
  4. The attractive forces between the particles, caused due to negative pressure of water held above the water table is called soil suction. - This statement is correct. Soil suction is indeed caused by negative pressure of water held above the water table, which leads to attractive forces between soil particles.