Extendable Ground Screws

Extendable ground screws are suitable for all soil types. When a groundscrew with a fixed length does not provide sufficient security, or when the load-bearing strata is at too great of a depth, an extendable ground screw from FIRST BASE can be used. Due to the large number of differentdiameters and lengths of screws and extension parts, the maximum load capacity can be achieved in every situation.

Extendable screw foundations are easy to transport and store. The diameters 89 mm and 114 mm screw foundations have a larger wall thickness (5.6 mm) which guarantees a longer lifespan. A ground screw in diameter 76 mm can beinstalled with our electrical machines. We recommend our hydraulic machines for larger diameters.