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Screwed tube pile
The screwed tube pile is a full-displacement pile with permanent steel casing and screw tip. The pile is formed vibration-free, by screwing steel tubes into the soil that are welded together during the execution so as to achieve the desired installation depth. The lower tubular segment is sealed at the bottom with a soil-displacing screw tip, provided with a one revolution helical blade and preventing any penetration of water and/or soil during screwing-in.
Construction sequence
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Fields of application
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Environmental impact
• Vibration-free execution
• No removal of soil
• Low noise pollution
• A stable, dry and flat work platform is required
Technical specifications
• Full displacement of the soil
• Pile shaft diameters ranging from 219 up to 609 mm
• External diameter (or screw tip diameter) up to 720 mm
• Allowable bearing capacity up to 2.275 kN
• Inclined piles with a maximum inclination up to 1:1
• Possibility to stop concreting the pile below the working level
• Possibility to execute the screwed tube pile with grout injection
• The pile is also known as a cased screw pile
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