Geotechnical Engineering:
Key Test Drilling Equipment
Coleman Engineering Company's Geotechnical Services Department’s
specialized equipment includes; drilling equipment necessary to work in rough
terrain, drilling holes to depths of 150 feet or more, and obtaining adequate
recovery of samples of all types of rock and soil.
The following is a list and brief description of the various test drilling
equipment of Coleman Engineering Company's Geotechnical Services
Department.
Drilling Equipment
 Diedrich
D-50 mounted on a GMC Topkick single axle truck.
The rig is equipped with equipment and supplies necessary to perform soil
drilling and sampling to approximately 200 feet and rock coring to approximately
350 feet.
Diedrich "D-50" mounted on a Bombardier Muskeg carrier.
The rig is equipped with all equipment and supplies necessary to perform soil
drilling and sampling to approximately 200 feet and rock coring to approximately
350 feet. This vehicle, fully loaded, imparts approximately 3.2 PSI upon the
area being traveled. The carrier was specifically designed to be used in swampy
and snow covered areas, and is used exclusively by our drilling crews during the
winter and for off-road work.
Diedrich “D-120” mounted on a hard tire articulating ATV carrier.
This is one of the most powerful drilling rigs currently available. This unit
has over 12,000 ft.-lbs. of torque in low gear and is capable of advancing
hollow stem augers with an O.D. as large as 18 inches (12-1/4 inch I.D.) and as
deep as 150 feet. Standard soil sampling can be carried to 500 feet and rock
coring to 3,000 feet. The carrier is capable of accessing the most difficult
terrain in all weather conditions when tire chains are added. This rig is used
for our most demanding drilling projects.
CME "55" 4-cylinder mounted on a skid frame. This rig is very good for
tough access locations, inside buildings, on top of dams, etc. This rig is
lightweight and can be winched into very difficult access locations.
 Diedrich
“D-120” mounted on a hard tire articulating ATV carrier.
This is one of the most powerful drilling rigs currently available. This unit
has over 12,000 ft.-lbs. of torque in low gear and is capable of advancing
hollow stem augers with an O.D. as large as 18 inches (12-1/4 inch I.D.) and as
deep as 150 feet. Standard soil sampling can be carried to 500 feet and rock
coring to 3,000 feet. The carrier is capable of accessing the most difficult
terrain in all weather conditions when tire chains are added. This rig is used
for our most demanding drilling projects.
CME "55" 4-cylinder mounted on a skid frame. This rig is very good for
tough access locations, inside buildings, on top of dams, etc. This rig is
lightweight and can be winched into very difficult access locations.
Conventional Barge
Coleman Engineering Company’s barge is sectional, and is 17’x40’ in
area when fully assembled. Broken down, it has five (5) sections which are
hauled by semi tractor/trailer rigs to the various job sites. This barge is foam
filled and draws 2.5 feet of water. This barge has been used for many sheltered
water projects and has drain holes and chlorinators to kill zebra mussels. We
have three (3) sets of spuds. Two (2) lightweight sets for soft bottom and
shallow conditions and one (1) heavy weight set for hard bottom situations. The
lightweight spuds are 17 feet and 35 feet long, and the heavy weight spuds are
45 feet long with spikes to hold in hard bottom areas such as exposed bedrock.
Work Boats
 Our
biggest work boat is a 21-foot Monarch tri-hull with two (2) 90 hp motors. This
is a very heavy duty and seaworthy unit, which is fully equipped with a marine
radio, cellular phone, D.G.P.S. positioning system, full canvas, fire
extinguishers, first aid kit, and distress signal kit. It is set up to provide
Ponar Dredge Sampling and Gravity Core Sampling and is equipped with water
temperature and depth finding capabilities as well as an electric winch/boom for
lifting samplers. This boat is set up with rigging so it can be lifted by a
crane to and from the water. When we have a barge project, we put a rubber
bumper on the front and cable it to our barge as a push boat.
This boat is very powerful and more than adequate to negotiate rough seas and
heavy current conditions. The depth of sampling using Ponar or gravity core
samplers is only limited by the amount of cable on the 2,000 lb. winch/crane
system. It has been used in as little as 18 inches and as much as 200 feet of
water. The boat is equipped with up to four (4) electrically operated Navy
anchors, which have formidable holding power in wind and flowing water
conditions.
Hurricane Direct Push, Dual Sampling System rig mounted on a Ford F-350 or
Bombardier Muskeg carrier. This gives us the advantage of having both direct
push technology and augering capabilities in one rig. Coleman Engineering
Company can offer you cuttings-free site investigations as well as
installation of up to 4” diameter monitoring wells with this technology. In
particular situations, this technology combination can not only save you time,
but the expense associated with additional mobilizations. The rig can also be
easily moved between carriers, even in the field. This enables us to arrive on
site with both on road and off road capabilities in the same mobilization
Sampling Services
- Various Soil Samplers – Different dimensions are used to collect
continuous or discrete soil samples
- Soil Gas Sampling – Samples collected through poly tubing for immediate
analysis
- Water Sampling – Stainless steel and/or PVC screens
- Monitoring well placement – ½” to 1 ½” diameter prepacked screens; ½” to
4” diameter conventionally installed monitoring wells
- Augering Capabilities - From 6” CFA to 8 ¼” HSA depending on subsurface
conditions
- Concrete Drilling – Small diameter holes, minimizing surface and
subsurface disturbance
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