OPTIMISE COSTS

The ground was very bad and the seat of the quays at water depth -10 had to find good ground at water depth -18.

IDATCO set up a site to substitute poor material not compatible with the seating of the quays with sands taken from 5 to 6 nautical miles outside the port and created a new foundation which enabled the construction of 900 m of quay at water depth -10.

BATA AIRPORT

To create solid ground to meet safety standards for A380 aircraft.

IDATCO designed a project with hydraulically backfilled dikes and breakwaters using geostationary and and suction hopper dredgers without damaging the surroundings of Bata airport.

This site had originally been entrusted to another company who had started the site by using the land around the airport and which was not able to finish the works.

Somagec GE with the support of IDATCO was able to implement a rapid and efficient technique which did not disturb the surroundings in any way and was financially competitive.

IDATCO 's engineering contribution in this project is an example which illustrates its role well.
Somagec GE had to create an island port adjoining the island of Corisco in Equatorial Guinea.
IDATCO ’s idea was to design all the port’s protective dykes as well as the breakwaters using hydraulic backfilling,

as sand was naturally available in the region and around the island.

The technique proposed was to design geotubes, 2.7 m in diameter, to fill them with sand, juxtapose and superimpose them to create artificial dykes and then to discharge sand into the basins to construct the breakwaters.

This solution enabled naturally available material to be used in the surrounding environment.

The rockfill usually used for dykes did not exist on the island, nor in the surrounding areas.

The cost of procuring these was excessive and the deadline for carrying this out was not compatible with the project.