Averaging the coefficient of consolidation

[Ben93]

Hello,
I recently came across a formula giving an average value of the coefficient of consolidation from representative values for different layers. Unfortunately I cannot remember where I saw this. Does anyone know something about this formula?

 

[Ben93]

I have actually just found it! It is called Absi's formula. Check out the link if you are interested.

 

[BigH]

Thanks for the link . . . appreciate it.