# Dynamic cone penetrometer (DCP) results and correlation

I have been reading about DCP and watched a video of how it is done (the video is not in English). But there are something things that are still unclear and I would greatly appreciate some help and clarification. I have these questions:

1. Is there a standard number of times that the hammer must be dropped?
2. What is recorded after an $x$ number of hammer drops?
• Lat/long coordinates of where test occurred?
• How far the metal head penetrated the ground (in cm)?
3. What happens to that data? What does it correlate with to give us the strength of the ground? What is that strength measured in?
• Cone penetration testing is something most engineers learn about during their undergraduate studies, particularly those studying civil engineering. If you don't get a satisfactory answer here migrate the question to SE Engineering.
– Fred
Jun 9 '15 at 13:40