Typically, most Seismic CPT (SCPT) is conducted using a cone with only one Geophone. However, Probedrill have SCPT cones with two geophones (separated 1m apart) which enables measurement of the shear wave velocity in the one-metre layer.
The advantage of using a two-geophone cone is that it is less sensitive to errors in the assessed arrival times of the shear wave.
Both the one geophone and two geophone SCPT cones are charged out at the same price.
If you are interested in taking advantage of the two geophone SCPT cone, please ensure you advise the office when making your rig booking.
All Probedrill CPT Rigs are able to provide Seismic testing.