Jack Pile Underpinning ~ this method can be used when the depth
of a suitable bearing capacity subsoil is too deep to make
traditional underpinning uneconomic. Jack pile underpinning is quiet,
vibration free and flexible since the pile depth can be adjusted to
suit subsoil conditions encountered. The existing foundations must
be in a good condition since they will have to span over the heads
of the pile caps which are cast onto the jack pile heads after the
hydraulic jacks have been removed.
Underpinning