1.1 Scope of prEN 1995-1-1 (1) prEN 1995-1-1 gives general design rules for timber structures. (2) prEN 1995-1-1 also gives specific design rules for buildings and timber civil engineering works. 1.2 Assumptions (1) The assumptions of EN 1990 apply to this document. (2) prEN 1995-1-1 is intended to be used in conjunction with EN 1990, EN 1991 (all parts), EN 1998 (all parts) when timber structures are built in seismic regions.