scope:

Scope and application 

This standard is applicable to the following types of offshore structures:

- column-stabilised units

- self-elevating units

- tension leg platforms

- deep draught floaters.

For utilisation of other materials, the general design principles given in this standard may be used together with relevant standards, codes or specifications covering the requirements to materials design and fabrication. 

The standard is applicable to structural design of complete units including substructures, topside structures and vessel hulls. 

This standard gives requirements for the following:

- design principles

- structural categorisation

- material selection and inspection principles

- loads and load effect analyses

- design of steel structures and connections

- special considerations for different types of units.

Requirements for foundation design are given in DNV-OS-C101.