I have collected old Borehole log records.I am trying to do soil classification based on SPT N Value. Some of the Borehole logs have NValues as >200psi, > 80psi, and so on. I am confused at the moment coz as I understood SPT Nvalues give the relative density of soil as 5-10 as loose, 11-30 as a medium, 31-50 as dense and >50 as very dense. So will you please suggest to me what should I do with this PSi information at a different depth?

Regards

Sujan