1996 – Engineering Tropical Soils

Power Station, St Lucia, Windward Islands


Non-engineered back-filling of a tropical valley was investigated between 1988-91 for the new Cul-de-Sac power station and substations.

Following detailed seismic risk and reciprocating vibrations assessment, compaction by vibro-replacement was chosen, supervised and a stiff foundation raft constructed. Recent hillside instability was analysed and the critical area of the main landslip was stabilised with cut-off and herringbone drains and counterforts.