This document provides general considerations to support the guidance to geotechnical and civil engineers for design using geosynthetics provided in the subsequent parts of the ISO/TR 18228 series.Cross References:ISO 10318-1ISO 10776EN 13252EN 13738EN 13492ISO 14688-2ISO/TR 18228-5ISO/TR 20432ISO 25619-2ISO 10319ISO 10321ISO 22476 (all parts)EN 13257ISO 22282 (all parts)EN 12447EN 13254EN 13249ISO 13431EN 13362ISO 12957-2ISO 13427EN 13255EN 13256EN 13253ISO 17892 (all parts)EN 13258EN 13361EN 16416EN 1997-1EN 13251AASHTO R50-09EN 13491EN 12226AASHTO 1993EN 13250EN 13493ISO 10318-2EN 12224EN 14150ISO 12957-1ISO 11058ISO 13438EN 14574EN 15381ISO 12956ISO 10318-1ISO/TS 13434:2008ISO 25619-1ISO 13426-1ISO 14688-1ISO 18325ISO 10320ISO 10772ISO 13426-2All current amendments available at time of purchase are included with the purchase of this document.