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GEWI® Pile System
GEWI® Pile System

GEWI® Pile System

GEWI® and GEWI® Plus Piles are micropiles in accordance with DIN 4128 and EN 14199. Usually, they are not tensioned and act as a passive foundation system. A GEWI® Threadbar is inserted into a borehole with a maximum diameter of 300mm and centered using a spacer. Afterwards, the borehole is filled or pressure grouted with cement mortar from the bottom up.


The grout simultaneously serves for transferring forces to the soil by skin friction and as standard corrosion protection (SCP). Like in solid construction, the alkaline environment of the surrounding cement stone coverage is used for protecting the reinforcing steel. If the cement stone cover does not offer sufficient protection in case of aggressive foundation soil or ground water, the GEWI® Pile is also available with double corrosion protection (DCP).


As GEWI® and GEWI® Plus Piles are skin friction piles, they can transfer compression, tensile, and alternating loads.

For transferring extremely high loads, several individual piles (usually three) can be combined in a borehole, providing that the borehole diameter is chosen sufficiently wide.


Fields of Application

  • Foundation
  • Uplift control
  • Baseplates
  • Positional stability
  • Dam construction


1 - Pile Head
2 - Foundation Element
3 - GEWI® Steel
4 - Coupler
5 - Cement Stone Coverage
6 - Spacer

Key Features

  • Threadbars with proven coarse GEWI® Thread that is suitable for on-site use – threadability even in extreme conditions
  • Thread along the entire length
  • Lengths can be flexibly adjusted on site
  • Approved for absorbing tensile, compression, and alternating loads
  • Excellent force / borehole ratio
  • Space saving installation
  • Compact, light equipment
  • Various steel grades
    ■ Robust, weldable GEWI® Bar
    GEWI® Plus Bars for ultimate wear
  • For increasing skin friction, GEWI® and
    GEWI® Plus Piles can be equipped with
    a posterior grouting system
  • Optimum load transfer in concrete
    structures via the anchoring elements
  • Especially small pile distances can
    be realized using special splitting
  • Multibar assembly is possible when
    subject to extreme loads
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