CPC Subgroup
E04C 3/34 of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings (E04C3/36 takes precedence)
Full Title
Structural elongated elements designed for load-supporting (as building aids E04G) > Columns; Pillars; Struts (not designed for end loading E04C3/02; posts, masts, as independent structures E04H12/00) > of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings (E04C3/36 takes precedence)