ÖNORM EN ISO 19901-4

This document contains provisions for geotechnical engineering design that are applicable to a broad range of offshore structures, rather than to a particular structure type. This document outlines methods developed for the design of shallow foundations with an embedded length (L) to diameter (D) ratio L/D smaller than 0,5, intermediate foundations, which typically have 0,5 smaller than L/D smaller than 10 (Clause 7), and long and flexible pile foundations with L/D bigger than 10 (Clauses 8 and 9). This document also provides guidance on soil-structure interaction aspects for flowlines, risers and conductors (Clause 10) and anchors for floating facilities (Clause 11). This document contains brief guidance on site and soil characterization, and identification of hazards (Clause 6).