Root Pile or Angle Piling ~ this is a much simpler alternative to
traditional underpinning techniques, applying modern concrete
drilling equipment to achieve cost benefits through time saving. The
process is also considerably less disruptive, as large volumes of
excavation are avoided. Where sound bearing strata can be located
within a few metres of the surface, wall stability is achieved
through lined reinforced concrete piles installed in pairs, at
opposing angles. The existing floor, wall and foundation are pre-
drilled with air flushed percussion auger, giving access for a steel
lining to be driven through the low grade/clay subsoil until it
impacts with firm strata. The lining is cut to terminate at the
underside of the foundation and the void steel reinforced prior to
concreting.In many situations it is impractical to apply angle piling to both
sides of a wall. Subject to subsoil conditions being adequate, it
may be acceptable to apply remedial treatment from one side only.
The piles will need to be relatively close spaced.Underpinning