1.1 Scope of EN 1997 1(1) This document provides general rules for the design and verification of geotechnical structures.(2) This document is applicable for the design and verification of geotechnical structures outside the scope of EN 1997 3.NOTE In this case, additional or amended provisions can be necessary.1.2 Assumptions(1) In addition to the assumptions given in EN 1990, the provisions of EN 1997 (all parts) assume that:— ground investigations are planned by individuals or organisations with knowledge of potential ground and groundwater conditions;— ground investigations are executed by individuals with appropriate skills and experience;— the evaluation of test results and derivation of ground properties from the ground investigation are carried out by individuals with appropriate geotechnical experience and qualifications;— the data required for design are collected, recorded, and interpreted by appropriately qualified and experienced individuals;— geotechni