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Pile Design and Construction Practice, Fifth edition

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Piling equipment <strong>and</strong> methods 109<br />

Figure 3.27 ‘Flydrill 5500’ with bucket auger removing spoil from 4.75 m dia monopiles at the Barrow<br />

offshore wind farm site (courtesy Bauer Maschinen GmbH).<br />

rig provides 30 kNm torque through the top drive for boring <strong>and</strong> 339 kNm torque on the<br />

lower rotary table for simultaneous casing up to 1000 mm diameter. The Liebherr pile driving<br />

rigs (see Section 3.1.1) have the option of running double rotary top drive or kelly tools for<br />

bored <strong>and</strong> CFA piles. In-cab electronic instrumentation <strong>and</strong> read-out to control positioning<br />

<strong>and</strong> drilling parameters is st<strong>and</strong>ard on most rigs.

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