Ground Improvement using Pre-loading with Prefabricated Vertical Drains

A container yard was constructed for handling of loaded containers at Chittagong Sea Port in Bangladesh covering an area of 60700 m2 over a sub-soil that included a layer of soft stratum of clayey silt/silty clay at the depths of 0 to 3.5 m below grade. Thicknesses of the soft stratum varied from 3 m to 7 m. Ground improvement using pre-loading with prefabricated vertical drains was undertaken to pre-consolidate the compressible sub-soils, which...