SPT x DCPT Correlation
SPT x DCPT Correlation
(OP)
I have seen the following in another thread.
Typical correlation between DCP and SPT values:
DCP value in mm/blow SPT value blow/300mm
5 50
6 44
7 38
8 33
9 28
10 24
12 22
14 18
16 16
18 15
20 14
How are these values derived? Seem a bit aggressive as they say DCPT=1.5 SPT upto 4 m and DCPT=1.75 SPT from 4m to 9 m.
Is there a recent correlation factor? Thanks.
Typical correlation between DCP and SPT values:
DCP value in mm/blow SPT value blow/300mm
5 50
6 44
7 38
8 33
9 28
10 24
12 22
14 18
16 16
18 15
20 14
How are these values derived? Seem a bit aggressive as they say DCPT=1.5 SPT upto 4 m and DCPT=1.75 SPT from 4m to 9 m.
Is there a recent correlation factor? Thanks.





RE: SPT x DCPT Correlation
RE: SPT x DCPT Correlation
I do not have CFM first version but will look for it. The numbers above are based on another Eng-Tip posting and indicate DCPT = 1.1 to 1.2 SPT.
RE: SPT x DCPT Correlation
RE: SPT x DCPT Correlation
RE: SPT x DCPT Correlation