This page will enable you to develop the capacity/resistance table vs. blow count for two widely used dynamic formulae:
Use of these formulae is discussed in detail in the Vulcan Hammer Guide to Pile Driving Equipment. All energies used are the rated striking energy of the hammer. By clicking on the hammer size that you need you will be taken to a table.
Important note: all results are in kips. EN formula results are traditionally reported in U.S. Tons; comparison needs to be made on this basis.