Page 46 - Trenchless Technology Piping Installation and Inspection
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Typical Applications Pressure pipelines for river, shore approaches, and highway crossings Pressure pipelines for river and highway crossings Telecom and power cables, ducts and gas lines
Machine Weight (ton) More than equal to 30 Less than equal to 18 Less than equal to 9
Thrust/Pullback (lb) More than 100,000 20,000–100,000 Less than equal to 20,000
Torque (ft-lb) More than 100,000 900–7000 Less than equal to 950
Drive Length (ft) Less than equal to 10,000 Less than equal to 900 Less than equal to 600 Comparison of Main Features for Typical HDD Methods
Depth (ft) Less than equal to 200 25–75 Less than equal to 15
Diameter (in.) 24–60 12–24 2–12
Type Large (Maxi) Medium (Midi) Small (Mini) TABLE 1.3
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