PrintThe port of Tema in Ghana is too shallow
As larger and larger ships are calling at the Port of Tema it is becoming
necessary to increase the water depth by 3 metres at the existing quayside.
Ghana Ports Authority has given this task to NIRAS, who are required to
draw up a detailed project for a new design of the existing quay in order
to achieve the increase in water depth. The geotechnical conditions in the
area vary sharply and range from solid rock to clay. These circumstances
heighten the demands on the new construction, since it is also necessary to
take into consideration that most of the existing quay needs to remain in
use during the construction period.
NIRAS’ design proposal consists of drilling steel piles 6-8 metres into the
rock. These steel piles need to be installed as close as possible to the
existing construction. When the construction is in place the harbour basin
in front of the quay will be deepened. This will be done mainly by blasting
the rocky bottom away. NIRAS will also be responsible for the supervision
during the extent of the project.