This is the first edition of CAN/CSA-ISO 19901-4, Petroleum and natural gas industries -Specific requirements for offshore structures -Part 4: Geotechnical and foundation design considerations, which is an adoption without modification of the identically titled ISO (International Organization for Standardization) Standard 19901-4 (first edition, 2003-08-01). At the time of publication, ISO 19901-4:2003 is available from ISO in English only. CSA will publish the French version when it becomes available from ISO.
This part of ISO 19901 contains requirements and recommendations for those aspects of geoscience and foundation engineering that are applicable to a broad range of offshore structures, rather than to a particular structure type.
Such aspects are
- site characterization,
- soil and rock characterization,
- design and installation of foundations supported by the seabed (shallow foundations), and
- identification of hazards.
Aspects of soil mechanics and foundation engineering that apply equally to offshore and onshore structures are not addressed. The user of this part of ISO 19901 is expected to be familiar with such aspects.
NOTE 1 Particular requirements for the design of piled foundations, which have a traditional association with fixed steel structures, are given in ISO 19902.
NOTE 2 Particular requirements for the design of shallow gravity foundations, which have a traditional association with fixed concrete structures, are detailed in ISO 19903.
NOTE 3 Particular requirements for the anchor points of mooring systems of floating structures are detailed in ISO 19901-7 .
NOTE 4 Particular requirements for the design of spud can foundations, which have a traditional association with jack up mobile offshore units (MOUs), are detailed in ISO 19905 (all parts).