high strain dynamic test

[geo321]

Dear all,

I have a high strain dynamic test to be done. I am checking the ASTM related to this test but I am not finding all the informations I am looking for.
I am searching for some help regarding :
1 - Drop height of the hummer.
2 - Number of times the hummer must hit the pile.

Many thanks

 

[oldestguy]

If you simply are looking for determining the support capacity of the piles, there are many accepted formulas, the first being the Engineering News Formula. I'd do a search for "Pile driving formula". If your specifications do not define which formula, the chances are the contractor likes to use a certain one and may have documentation to show precise it is.

There are attachments to the pile that give a great deal of dynamic information, but that is seldom done on routine jobs.

 

[Okiryu]

Here you will find lots of technical papers from the developers of the dynamic testing (PDI and GRL):

http://pile.com/reference/