Q21
What is the main limitation of wash boring?
A.
High cost
B.
Not suitable for soft soils
C.
Difficulty in advancing in hard strata
AnswerD.
Produces disturbed samples
Answer: Option C
Solution
Answer: Option C
Solution:
Wash boring is not effective in hard or boulder-rich formations because the water jet cannot penetrate rock easily.It is mostly used in soft to medium soils.