Reclamation on Soft Subsoil by Spraying Thin Layers of Sand: The "IJburg" Project near Amsterdam
Reclamation on Soft Subsoil by Spraying Thin Layers of Sand: The “IJburg” Project near Amsterdam

The question is: How do you create a stable platform when reclaiming sand on a very soft subsoil? Removing the subsoil or placing large amounts of geo-textiles are costly. The answer is: A new method using a custom-built spray pontoon which has proven efficient and economically viable.

Assessment of Offshore Sand and Gravel for Dredging
Assessment of Offshore Sand and Gravel for Dredging

Offshore sand and gravel at depths of -60 metres form an important economic resource. Accurate assessment of these offshore deposits are important to prevent environmental problems, conflicts and delays.

Calculation of Sand Losses During Hopper Loading Process in Trailers
Calculation of Sand Losses During Hopper Loading Process in Trailers

The process that takes place in the sedimentation tanks of water treatment plants is similar to the hopper loading process and can provide a theoretical model for trailing suction hopper dredgers.

Sydney Airport's Parallel Runway: The Beneficial Use of Sand Dredged in Botany Bay
Sydney Airport’s Parallel Runway: The Beneficial Use of Sand Dredged in Botany Bay

Alternative sources of bulk filling for the runway were considered, but dredging sand in Botany Bay was the most cost-efficient and environmentally sound.