CASE STUDY:
Piled Underpinning Slab
PILES:
350mm Diameter Mini-Piles
SLAB THICKNESS:
250-400mm thick RC Slab
SLAB AREA:
230m2
PROJECT SCOPE
We were appointed to design and install a new lower ground floor RC slab to support the existing semi-detached 4-storey residential property above.
FORCE SOLUTION
With access only available via a standard doorway and the operating headroom limited to 2.8m, we installed 350mm diameter open bored piles with a mini-piling rig and spliced segmental pile cages.
Following installation of the piles, the internal structural walls were supported on sacrificial temporary stools installed in discrete pockets.
The 250mm thick RC slab was designed with integral 400mm deep downstand beams to transfer the significant loads of the structural walls above.
