standard penetration test(SPT)|what is procedure of standard penetration Test?|why SPT is performed?

[@CET360]

Explained Very well.keep uploading more content.
Very useful video

[@civillogy]

Thank you

[@sajidkhan-oe6me]

0:38

[@civillogy]

Yes dear SPT N is explained in this video
Please watch complete video

[@CET360]

Explained Very well.keep uploading more content.
Very useful video

[@civillogy]

Thank you, I will