Skip to main content
Lee Shaw, Geoprobe® Sales

Lee Shaw, Geoprobe® Sales

I’ve been operating the 3230DT since its release and the capabilities continue to impress me. 

In April, we successfully used the 3230DT geotechnical combo rig to deploy CPT at a chemical plant construction site in Texas. 

To be able to mobilize one track machine and then push CPT effectively with a lightweight platform in difficult subsurface conditions was essential to the customer.  The 3230DT successfully met each requirement and more. 

The advantage to using the 3230DT is that you have multiple drilling methods at your fingertips and can easily transition from rotary applications to CPT – all using the same powerful combo head.  

Features such as the sideshifting head and rod clamp are an added bonus, allowing operators to sideshift the head without moving the machine, raise the rod with the rod clamp to remove friction, sideshift back and then continue deploying CPT.

My overall experience running CPT with the 3230DT is that it’s actually very relaxing and quiet.  With the engine at idle and using the head feed rate control, I could precisely adjust the cone advancement to 2 cm/second and maintain that speed. 

At some locations we pushed with just the static weight of the 3230DT, which gave us approximately 5 tons of downforce.  For the deeper CPT locations we installed anchors to tie down the 3230DT drill mast before pushing the CPT cone.  The anchors held and allowed us to perform the maximum 20 tons of downforce push.  Impressive.

We have several customers who perform CPT and seismic CPT with the 3230DT because it has the ability to efficiently sample the subsurface using both direct push and rotary drilling techniques and then quickly transition to pushing the CPT cone.

Contact Us

1835 Wall Street
Salina, Kansas 67401
Phone: (785) 825-1842

3230DT drill rig combines rotary and direct push functions

3230DT Drill Rig

Combine geotechnical augering and high-speed rotary with advanced direct push capability to offer additional services to your customers, quickly going from coring rock to pushing CPT - all in one drill rig.

Related Articles


Primarily focused on completing site investigations and writing soil reports to help clients eliminate risk as they build...

ID: 5341 | Date: 2020-12-04

One cold day in late December rush-hour motorists noticed green ooze gushing onto the pavement through a crack in the retaining wall of I-696, north of Detroit...

ID: 5177 | Date: 2020-05-29

GFA found the perfect combination of precision and power with the Geoprobe® 3230DT along with the added benefit of increasing their productivity through the 3230DT’s direct push capabilities...

ID: 5147 | Date: 2020-05-29

Known for providing precision head feed control and versatility to easily switch between drilling techniques, the NEW Tier 4 3230DT adds horsepower and fuel-saving hydraulic features...

ID: 5235 | Date: 2020-05-29

The ability to anchor the 3230DT, achieving greater CPT depths, has led to the development of a new procedure integrating the CPT data into the bridge piling design for Nebraska Department of Transportation...

ID: 5256 | Date: 2020-05-29