The cone penetration test (CPT) has four main advantage over the usual combination of boring, sampling and standard penetration testing. Which of the following is not an advantage?
1
It provides a continues or virtually continuous record of ground conditions.
2
It avoids the disturbance of the ground associated with boring and sampling, particularly that occur with Standard penetration Test (SPT).
3
It is as expensive as conventional boring.
4
It is faster by a factor about 10.