Structure and material

The ORT-helical pile is the best possible solution for frost-resistant foundation of both light and heavyweight structures. The ORT-helical pile consists of a steel pole with a special patented tip and it is simply rotated to the ground. The tip has a cone shape body with a helical flange. The flange drives the pile to the soil whereas the cone compacts the soil as the pole penetrates into the ground. This maintains the compactness of the soil and leaves the ground undisturbed around the pile. The pile is made of steel pipe (S 355 J2H) and the helical pile foundation is completely hot dip galvanized.

Most common sizes are:


STEEL SCREW FOUNDATION PILING
Pipe: Helical flange:  
60,3 x 2,9 mm 150 mm 60,3 x 6,3 ja 76,1 x 6,3 mm
114,3 x 3,6 mm 250 mm 88,9 x 6,3 ja 114,3 x 6,3 mm
114,3 x 6,3 mm 400 mm 139,7 x 10,0 ja 323,9 x 8,0 mm
In heavyweight structures the helical pile foundation can be used with pipe sizes of 115/250 mm, 140/400 mm, 220/600 mm and larger.

The thickness of the steel pipe can flexibly vary according to the pipe and post standards and the load requirements.

The helical pile foundation method is especially good for renovation construction. The silent and non-vibrating method is suitable as foundation for 1 - 2 floor buildings and for large area buildings, e.g. schools.

The helical pile is also suitable for under-water building (e.g. bridges, wharves and piers) as an replacement for the wooden piles.