DNV GL INDUSTRIAL SERVICES IV-6-3 PDF

In this Chapter the requirements for the different types of fixed offshore installations are defined.

Types of fixed installations The following types have to be distinguished:

- installations permanently fixed by piling (pile foundation)

- installations resting on the sea bed by action of gravity (gravity foundation)

- installations with excess of buoyancy, connected to a base by tensioned anchoring elements (tension leg foundation)

Materials used for construction of the main structure/hull

The following materials may be used for the main structure/hull:

- steel

- reinforced concrete

- any other suitable material

- combination of above materials