Fixed steel and concrete gravity base structures

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Many types of offshore structures are in service. Some are better suited to certain environmental and operational criteria; some are limited by availability of construction sites; and some are chosen simply by subjective preference of an owner/operator. Selecting a structure type is the first major structural design task after environmental and operational criteria have been defined and will sometimes require preliminary design of several concepts before a choice is made. Employing lessons learned * 2 Concrete gravity based offshore structures * 2.1 Design * 2.2 Foundation * 2.3 Construction and installation * 3 References * 4 Noteworthy papers in OnePetro * 5 External links * 6 See also The most common type of offshore structure in service today is the jacket (or template) structure, as illustrated inFigure 1. The template was derived from the function of the first offshore structures to serve as a guide for the piles. The piles, after being driven, are cut off above the templates, and the deck is placed on top of the piles.

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