If loose sand is subjected to drained shearing, then which of the following is applicable?
- Avolume change = 0 cc
- Bexcess pore water pressure = 0 kPaCorrect
- Cexcess pore water pressure > 0 kPa
- Dexcess pore water pressure < 0 kPa
Solution
Concept
Drained test
Step-by-step solution
1. In a drained test pore pressures dissipate. 2. Excess pore pressure is zero; loose sand contracts.
Explanation
Drained means no excess pore pressure.
Why the other options are wrong
Volume change is not zero for loose sand.
Shortcut
Drained → u = 0.
Correct answer: B) excess pore water pressure = 0 kPa