STRUCTURAL ELEMENTS; BUILDING MATERIALS (for bridges E01D; specially designed for insulation or other protection E04B; elements used as building aids E04G; for mining E21; for tunnels E21D; structural elements with broader range of application than for building engineering F16, particularly F16S)

Introduced: September 1968

Description

E04C covers structural elements and building materials used in construction, including beams, columns, panels, frames, and other load-bearing or non-load-bearing components. This subclass encompasses both traditional materials (wood, stone, concrete, steel) and modern composite or prefabricated elements, as well as their manufacturing processes and assembly methods. Inventions relating to structural improvements, material compositions, reinforcement techniques, and connections between building components are classified here. Related specific construction technologies (such as roofing, insulation, or finishing) may fall under other E04 subclasses, while E04C focuses primarily on the primary structural framework and constituent materials.

Title

Titles differ between systems:

IPC: STRUCTURAL ELEMENTS; BUILDING MATERIALS

CPC: STRUCTURAL ELEMENTS; BUILDING MATERIALS (for bridges E01D; specially designed for insulation or other protection E04B; elements used as building aids E04G; for mining E21; for tunnels E21D; structural elements with broader range of application than for building engineering F16, particularly F16S)

Full Title

Full titles differ between systems:

IPC:

STRUCTURAL ELEMENTS; BUILDING MATERIALS

CPC:

STRUCTURAL ELEMENTS; BUILDING MATERIALS (for bridges E01D; specially designed for insulation or other protection E04B; elements used as building aids E04G; for mining E21; for tunnels E21D; structural elements with broader range of application than for building engineering F16, particularly F16S)

IPC and CPC are identically structured here. All 4 subcodes exist in both systems.

4 shared codes have differing titles between IPC and CPC.

Child Classifications

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E04C 1/00 Building elements of block or other shape for the construction of parts of buildings (of relatively thin form E04C2/00; structural elongated elements designed for load-supporting E04C3/00, e.g. columns or pillars E04C3/30; manufacture or material of building bricks, stones, or the like B28, C03, C04; paving elements E01C; general building constructions E04B, e.g. walls E04B2/00, floors E04B5/00, roofs E04B7/00, ceilings E04B9/00; structural elements specially designed for built-in conduit shafts E04F17/00; ; special elements for building ovens or furnaces F24B, F27D) +1 CPC IPC+CPC Available in IPC and CPC
E04C 2/00 Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels (materials or manufacture, see the relevant subclasses, e.g. B27N, D21J; made in situ E04B; specially designed for insulation or other protection E04B1/62; load-carrying floor structures E04B5/02, E04B5/16; roofs consisting of self-supporting slabs E04B7/20; roof or like covering elements E04D3/00; for lining or finishing E04F13/00) +3 CPC IPC+CPC Available in IPC and CPC
E04C 3/00 Structural elongated elements designed for load-supporting (as building aids E04G) +1 CPC IPC+CPC Available in IPC and CPC
E04C 5/00 Reinforcing elements, e.g. for concrete; Auxiliary elements therefor ( material composition C21, C22) IPC+CPC Available in IPC and CPC