Case study: Dynamic Compaction, Chichester

CLIENT:

Ikon Construction

Scope of works:

Across two visits during 2015 & 2017, GeMech completed dynamic compaction to building foundations and ground bearing slabs for lightly load commercial units, built over a backfilled Gravel Pit which had more recently been used as a concrete production site.

The ground conditions comprised up to 8.5 of Made Ground (Sandy Gravelly Silt), over residual Gravel and London Clay.
During the second phase of the project, dynamic compaction work was required within 4.0m of the phase 1 boundary. Vibration monitoring was undertaken, and continuous surveillance was put in place to ensure there was no detrimental impact on the occupied neighbouring buildings.

The compaction points on the second phase of this project were filled during construction using site won crushed concrete, alongside a small quantity of imported recycled aggregates, resulting in a low cost, low emboded carbon solution.

Technique:

Dynamic Compaction

Contract Value:

£320,000.00