Snake Island is a free zone facility and port development strategically located in the coastal waterways of Lagos, with immediate access to the open seas. The eastern quay wall had fallen into disrepair and needed urgent remedial work to make it suitable for heavy loading vehicles and the increase in capacity that the port was experiencing.
Beckett Rankine produced design calculations, construction drawings and works specifications for the remedial work. The critical consideration was the structural design of the load relieving platform to support the existing sheet pile wall and accommodate the increased surcharge load due to the load out operations.
Challenges encountered were the poor ground conditions, difficulties supplying materials to the island and limited availability of construction plant. The new quay wall and jetty structure is to be used for the transfer of large modules, rigs and jackets weighing up to 10,000 tonnes onto barges for transport offshore.