Q

Can ductile cast iron piles (DYWIDAG brand) be dynamically tested with the PDA?

A

Yes. However, it is recommended that a drop weight be used for the test, instead of the driving system normally used to install this type of pile (a hydraulic excavator using a rapid-stroke hydraulic hammer). The drop weight used in the test should correspond to 1.5% to 2% of the specified ultimate load of the pile.