Concrete, reinforced and prestressed concrete structures - Part 2: Concrete; Specification, properties, production and conformity; Application rules for DIN EN 206-1— 48 стр.
Subsoil and groundwater; classification and description of soil and rock; borehole logging of soil and rock not involving continuous core sample recovery— 20 стр.
Geotechnical investigation and testing - Identification and classification of rock - Part 1: Identification and description (ISO 14689-1:2003); German version EN ISO 14689-1:2003— 26 стр.