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Underpinning
McDonnell Piling & Foundations have a range of limited access rigs to gain access to
even the most restricted areas and can offer a full subsidence remedial package
comprising drain survey and replacement, foundation repairs and remedial works to
footpaths, driveways, structural cracks etc.
Remedial works can comprise a
combination of the following:
* Hand operated drilling through the foundation followed by
pressure grouting under the foundation to stabilise loose
material or to fill voids in the soil caused by water leakage.
* Mini-Piles installed directly through and bonded to the
foundation, thus transforming the structural load from
the foundation to bearing strata at depth.
* Compression Mini-Piles installed either side of the foundation
with connecting tie beams running under the foundation.
* Mini-Piles installed on one side of the foundation, one acting
in tension and one acting in compression, with a cantilever
tie beam running under the foundation.
* In some cases where subsidence is pronounced, it may be
necessary to jack up the structure on supporting Mini-Piles. |
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