DIFF Subgroup
E04B 1/1903 Full Title
Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs (scaffolds, shutterings E04G; structures specially adapted for buildings for special purposes, general layout of buildings, e.g. modular co-ordination, E04H) > Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons (E04B1/32 - E04B1/36 take precedence; elongated load-supporting parts as elements, trusses, truss-like structures E04C3/00) > Three-dimensional [3D] framework structures
Of 5 combined children, 0 exist in both systems.
5 codes are CPC-only extensions.
Note: 2 CPC extensions are marked as secondary classification only.