Hollow bar soil nails provide an in-situ reinforcement for the stabilisation of slopes. Typical applications include railway embankments and road widening projects. The DYWI ^® Drill Hollow Bar system offers high rates of production when installed with the simultaneous drill and grout method.

For permanent soil nailing applications, the addition of a galvanised top section to the DSI Soil Nail provides a practical means of extending the life of the nail in the critical area at the soil / air interface (Galvanizing to BS EN 1461).

Face details comprise a bearing plate with either a hemispherical or a wedge washer. For confinement of the face between the bearing plates, a shotcrete (often stone clad) or reinforced geogrid will provide the necessary restraint.