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OWENSBORO RIVERFRONT DRILLING

DDS ENGINEERING, PLLC completed drilling and laboratory testing services for a riverfront project in Owensboro, Kentucky.  DDS, and Qore Property Sciences, loaded a mobile drill rig on a barge owned and operated by M. Bowling, Inc. to drill test borings along the south bank of the Ohio River in Owensboro, Kentucky.


The purpose of the exploration was to obtain and classify soil conditions at locations predetermined by the City of Owensboro for the riverfront project design team.  The scope was to provide nine soil test borings to a maximum depth of forty feet while providing standard penetration values.  Samples were obtained during drilling operations to perform laboratory testing including moisture content, plasticity index, #200 wash, and hydrometer analysis.


Positioning the drill rig on the barge and stabilizing the barge during drilling operations was a challenging task to overcome.  A platform off the front end of the barge utilizing two – 4’ wide, 21’ long, and 14” thick wooden mats was built to position the rig, allowing boring operations off the edge of the barge and to create a working surface for the drill operators.  To further stabilize the barge from the rivers current, a second barge was placed parallel to the river bank.  Once the stabilizing barge was in place, spuds were dropped to the bottom of the river bed preventing horizontal movement.  The drilling barge was positioned at the boring location and tied perpendicular to the stabilizing barge.  


The drilling method used was a mud rotary technique in which a tri-cone bit connected to the bottom of drill stems is rotated to advance the boring.  A mixture of bentonite and water (mud) is circulated in the borehole by pumping the mud down through the drill stems while picking up cuttings and carrying them to the surface.  Split spoon samples were taken while performing the standard penetration test at depths determined in the field.  


DDS thrives on challenging projects such as this one.  The completion of this project was the result of teamwork between the City of Owensboro, M. Bowling, Inc., Ted Lolly, and DDS.

Project Location

Owensboro, Kentucky

Client

City of Owensboro, Kentucky

Dates

2008

Project Type

Geotechnical Exploration

Departments Involved

Geotechnical Engineering

Rural/Urban

Urban

Project Manager(s)

Matt Rogers, PE

Principal-in-Charge

Dennis D. Smith, PE, PLS

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