Mooring dolphin pile productivity

[MEMcGinnis]

I'm working on construction scheduling for mooring dolphins supported on 1000mm steel piles. They will be driven from barges to a depth of approximately 20m.
What's a typical productivity rate for the pile driving?

Thanks,
M

 

[MarineConstruction]

Driven to a depth of 20m into the overburden or does that include the water column? What does the overburden consist of? Are they to be drive with a vibratory hammer or a diesel hammer or other? What is the refusal criteria?

Regards.