Piles – Deep in the ground

They form the foundation without which countless buildings would be impossible to construct: our bored piles. These are cylindrical bodies made of concrete with or without reinforcement. They discharge high structural loads into load-bearing soil strata and are constructed in a line or with overlapping secant design to form a supporting wall for an excavation pit or to seal off groundwater. The length, diameter, material, formation and placement of the piles can vary according to your individual requirements. 

Kelly pile

For this method, the drilling tool is attached to a telescopic Kelly bar, which is continually turned into the subsoil while the soil is gradually removed from the casing. This method can be used to install uncased, partially cased, fully cased or slurry stabilized piles. 

Continuous Flight Auger pile (CFA)

With this method, an auger is used as drilling tool. Once the tool reaches the final depth, the hollow stem auger concretes from the bottom up. The reinforcement is installed afterwards, assisted by vibration if necessary. This rotary drilling technique enables high drilling performance. 

Double-head drilling system (Twin Rotary Head)

The double-head system combines the CFA method with the cased Kelly drilling method. The result is a cased borehole created with a continuous flight auger. This is particularly advantageous in areas with high groundwater and soil which are in danger of being lifted and require drilling underwater load. 

 

Front-of-Wall method (FoW)

With the particular structural design of the two rotary drilling heads, this method makes it possible to drill directly in front of buildings. The machine and equipment are free of interfering edges which exceed the dimensions of the pipe diameter. The FoW technique is an especially vibrationless and low-noise drilling method. 

Full Displacement Pile (FDP)

Almost no drill spoil is brought above ground with this method – a decisive advantage. The drill string consists of a starter auger, the displacement pile body and an extension pipe. During extraction and pulling the existing soil is displaced, concreting and reinforcement are carried out in the same way as CFA piles. 

 

Businesspark, Hannover, Germany
Construction of secant pile wall with a diameter of 880 mm and depth of 16 m using the double-head drilling method.

Dive Drill

The Dive Drill CU 44 is applicable for pin pile and mooring pile installation in any rock or soil condition as well as for relief drilling for piles (Drive-Drill-Drive). Water depths up to 100m and rock strength of +200 MPa are a welcome challenge. If required, we can operate up to four dive drills simultaneously.

BAUER Seabed Drill

Developed for applications in competent rock and high energy currents, our underwater cased or uncased drilling rig. The BAUER Seabed Drill allows for quick and easy pile installations. Capable of working in currents of up to 12 knots, the BSD 3000 underwater drilling rig and subsea template is lowered to the seabed from a floating vessel and operated by remote control via umbilicals.

Bauer Offshore Technologies

Bauer Offshore Technologies

Have a look at the website of our offshore experts of the BAUER Group. They provide complete and proven services for Drilled and Grouted Pile Installation in any geotechnical conditions.

BAUER Offshore Technologies GmbH

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Do you have any questions?

Then get in touch with us. 

BAUER Spezialtiefbau GmbH
Head office
bst@bauer.de
+49 8252 97-0

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