Introducing our new 2-part screw anchor (ONA-142-001-009). The two-part screw anchor is installed using a hydraulic drive unit mounted on an A-frame of Hiab style crane. A squared driving head is fitted as an adapter for driving the first part and then slotted over the second including padeye. The passive earth plate is driven into position and slots over the bottom padeye before being locked into place providing substantial lateral resistance. The passive earth plate can also be fitted with anodes as required to suit soil conditions.
The screw anchors offer significant vertical and horizontal lift capacity dependent on soil conditions and is ideal for environmentally friendly mooring systems. This particular unit is fitted with a primary screw and small secondary screw to assist in keeping the anchor upright during the early stages of driven entry in lieu of a template or similar. The primary in the prototype was large at 400mm diameter and is more suited to sandy soils.