Ground screws.
Strength below the surface.
A steel foundation that screws into the ground, transferring the weight of your structure into the soil below. The right specification creates a practical alternative to pouring concrete.
Plan Your Installation
Technical information
What goes into the specification.
- Material & protection
- Steel with a hot-dip galvanised coating to BS EN ISO 1461. The coating protects the steel against corrosion; ground conditions influence service life.
- Shaft diameter
- 76 mm.
- Flange
- 140–200 mm.
- Connections
- U-heads, flat plates, post anchors and joist saddles connect the foundation to the structure. Adjustable heads and specialist brackets suit particular applications.
- Load assessment
- Compression, uplift and lateral forces all matter. Capacity must be assessed for the specific screw and site; dimensions alone do not establish a safe load.
- Installation & verification
- Specialist equipment rotates the screw into the ground. Site assessment, installation records and load testing where required inform the final specification.
Ground screw sizes
Find the right starting point.
These are the indicative sizes used in our calculator. They are starting points for discussion, not a final engineering recommendation or confirmation of stock.
| Length | Load capacity |
|---|---|
| 800 mm | 13.5 kN |
| 1,050 mm | 16.5 kN |
| 1,250 mm | 25 kN |
| 1,550 mm | 35 kN |
| 2,050 mm | 45 kN |
Shaft diameter 76 mm, flange 140–200 mm. Longer or larger screws may be needed. Buried services, obstructions, soil conditions and structural loads must be checked before installation. We confirm the final sizes, layout and connections for your project.