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Combining piles and traditional underpinning makes
it possible to provide deep foundations where none existed
before.
Piles of suitable depth are installed on either side
of the structure (either driven, augered, or contiguous
flight bored) and then beams are cast between them,
providing a 'bridge' for the structure to sit on.
This technique is used when traditional underpinning
becomes uneconomic, i.e. where the suitable bearing
strata is deeper than 3m and the area to be underpinned
is more than 4m or 5m. |
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Property in Sunninghill that needed piled 'underpinning'
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