| E | SK | FIXED CONSTRUCTIONS |
| E04 | KL | BUILDING (layered materials, layered products in general B32B) |
| E04C | UKL | 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) |
| E04C 1/00 | HGR | Building elements of block or other shape for the construction of parts of buildings (of relatively thin form E04C 2/00; structural elongated elements designed for load-supporting E04C 3/00 , e.g. columns or pillars E04C 3/30; manufacture or material of building bricks, stones, or the like B28 , C03 , C04; paving elements E01C; general building constructions E04B , e.g. walls E04B 2/00 , floors E04B 5/00 , roofs E04B 7/00 , ceilings E04B 9/00; structural elements specially designed for built-in conduit shafts E04F; special elements for building ovens or furnaces F24B , F27D) [5] |
| E04C 1/39 | UGR1 | | . | characterised by special adaptations, e.g. serving for locating conduits, for forming soffits, cornices, or shelves, for fixing wall-plates or door-frames, for claustra |
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| E04C 1/40 | UGR1 | | . | built-up from parts of different materials, e.g. composed of layers of different materials or stones with filling material or with insulating inserts |
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| E04C 1/41 | UGR2 | | . . | composed of insulating material and load-bearing concrete, stone or stone-like material [6] |
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| E04C 1/42 | UGR1 | | . | of glass or other transparent material |
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| E04C 2/00 | HGR | 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 places, e.g. B27N , B29 , D21J; made in situ E04B; specially designed for insulation or other protection E04B 1/62; load-carrying floor structures E04B 5/02 , E04B 5/16; roofs consisting of self-supporting slabs E04B 7/20; roof- or like covering elements E04D 3/00; for lining or finishing E04F 13/00) |
| E04C 2/02 | UGR1 | | . | characterised by specified materials (translucent E04C 2/54) |
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| E04C 2/04 | UGR2 | | . . | of concrete or other stone-like material; of asbestos cement (E04C 2/26 takes precedence; material or manufacture B28 , C04) |
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| E04C 2/06 | UGR3 | |
| E04C 2/08 | UGR2 | | . . | of metal, e.g. sheet metal (E04C 2/26 takes precedence) |
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| E04C 2/10 | UGR2 | | . . | of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products (E04C 2/26 takes precedence) |
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| E04C 2/12 | UGR3 | |
| E04C 2/14 | UGR4 | |
| E04C 2/16 | UGR3 | | . . . | of fibres, chips, vegetable stems, or the like |
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| E04C 2/18 | UGR4 | | . . . . | with binding wires, reinforcing bars, or the like |
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| E04C 2/20 | UGR3 | |
| E04C 2/22 | UGR4 | |
| E04C 2/24 | UGR3 | |
| E04C 2/26 | UGR2 | | . . | composed of materials covered by two or more of groups E04C 2/04 , E04C 2/08 , E04C 2/10 , or of materials covered by one of these groups with a material not specified in one of these groups |
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| E04C 2/28 | UGR3 | |
| E04C 2/284 | UGR3 | | . . . | at least one of the materials being insulating [6] |
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| E04C 2/288 | UGR4 | | . . . . | composed of insulating material and concrete, stone or stone-like material [6] |
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| E04C 2/292 | UGR4 | | . . . . | composed of insulating material and sheet metal [6] |
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| E04C 2/296 | UGR4 | | . . . . | composed of insulating material and non-metallic or unspecified sheet-material (E04C 2/288 takes precedence) [6] |
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| E04C 2/30 | UGR1 | | . | characterised by the shape or structure (translucent E04C 2/54) |
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| E04C 2/32 | UGR2 | | . . | formed of corrugated or otherwise indented sheet-like material; composed of such layers with or without layers of flat sheet-like material |
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| E04C 2/34 | UGR2 | | . . | composed of two or more spaced sheet-like parts (E04C 2/32 takes precedence; spacers for cavity walls E04B 2/44) |
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| E04C 2/36 | UGR3 | | . . . | spaced apart by transversely-placed strip material, e.g. honeycomb panels (honeycomb or other core members for layered products B32B) |
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| E04C 2/38 | UGR2 | | . . | with attached ribs, flanges, or the like, e.g. framed panels (concerned with attaching to other panels or elements to form a structure, see the places for the relevant structure, e.g. E04B 2/00) |
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| E04C 2/40 | UGR2 | | . . | composed of a number of smaller components rigidly or movably connected together, e.g. interlocking, hingedly connected |
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| E04C 2/42 | UGR2 | |
| E04C 2/52 | UGR2 | | . . | with special adaptations for auxiliary purposes, e.g. serving for locating conduits (E04C 2/54 takes precedence; block-shaped elements therefor E04C 1/39; floor structures incorporating ducts E04B 5/48) |
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| E04C 2/54 | UGR1 | |
| E04C 3/00 | HGR | Structural elongated elements designed for load-supporting (as building aids E04G) |
| E04C 3/02 | UGR1 | | . | Joists; Girders, trusses, or truss-like structures, e.g. prefabricated; Lintels; Transoms (E04C 3/38 takes precedence; for structures characterised by movable, separable, or collapsible parts E04B 1/343) |
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| E04C 3/04 | UGR2 | |
| E04C 3/06 | UGR3 | | . . . | with substantially solid, i.e. unapertured, web (E04C 3/10 , E04C 3/11 take precedence) |
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| E04C 3/07 | UGR4 | | . . . . | at least partly of bent or otherwise deformed strip- or sheet-like material |
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| E04C 3/08 | UGR3 | | . . . | with apertured web, e.g. with a web consisting of bar-like components; Honeycomb girders (E04C 3/10 , E04C 3/11 take precedence) |
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| E04C 3/09 | UGR4 | | . . . . | at least partly of bent or otherwise deformed strip- or sheet-like material |
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| E04C 3/10 | UGR3 | |
| E04C 3/11 | UGR3 | | . . . | with non-parallel upper and lower edges, e.g. roof trusses (arched girders, portal frames E04C 3/38) |
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| E04C 3/12 | UGR2 | | . . | of wood, e.g. with reinforcements, with tensioning members (E04C 3/292 takes precedence) |
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| E04C 3/14 | UGR3 | | . . . | with substantially solid, i.e. unapertured, web (E04C 3/17 , E04C 3/18 take precedence) |
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| E04C 3/16 | UGR3 | |
| E04C 3/17 | UGR3 | | . . . | with non-parallel upper and lower edges, e.g. roof trusses |
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| E04C 3/18 | UGR3 | | . . . | with metal reinforcements or tensioning members |
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| E04C 3/20 | UGR2 | | . . | of concrete or other stone-like material, e.g. with reinforcements or tensioning members (reinforcing elements E04C 5/00) |
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| E04C 3/22 | UGR3 | | . . . | built-up by elements joined in line |
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| E04C 3/26 | UGR3 | |
| E04C 3/28 | UGR2 | |
| E04C 3/29 | UGR2 | | . . | built-up from parts of different materials |
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| E04C 3/292 | UGR3 | | . . . | the materials being wood and metal |
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| E04C 3/293 | UGR3 | | . . . | the materials being steel and concrete (concrete with internal reinforcements or tensioning members E04C 3/20) |
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| E04C 3/294 | UGR4 | | . . . . | of concrete combined with a girder-like structure extending laterally outside the element (light-weight girders used as reinforcement E04C 5/065; as part of a floor structure E04B 5/23) |
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| E04C 3/30 | UGR1 | | . | Columns; Pillars; Struts (not designed for end loading E04C 3/02; posts, masts, as independent structures E04H 12/00) |
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| E04C 3/32 | UGR2 | |
| E04C 3/34 | UGR2 | | . . | of concrete or other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings (E04C 3/36 takes precedence) |
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| E04C 3/36 | UGR2 | |
| E04C 3/38 | UGR1 | | . | Arched girders or portal frames (straight girders able to be bent E04C 3/02; inflatable tents or canopies, in general E04H 15/20) |
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| E04C 3/40 | UGR2 | |
| E04C 3/42 | UGR2 | | . . | of wood, e.g. units for rafter roofs (E04C 3/46 takes precedence) |
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| E04C 3/44 | UGR2 | | . . | of concrete or other stone-like material, e.g. with reinforcements or tensioning members (E04C 3/46 takes precedence) |
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| E04C 3/46 | UGR2 | |
| E04C 5/00 | HGR | Reinforcing elements, e.g. for concrete; Auxiliary elements therefor (material composition C21 , C22; arrangements of reinforcing elements, see the relevant classes) |
| E04C 5/01 | UGR1 | | . | Reinforcing elements of metal, e.g. with non-structural coatings [5] |
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| E04C 5/02 | UGR2 | | . . | of low bending resistance, i.e. of essentially one-or two-dimensional extent |
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| E04C 5/03 | UGR3 | | . . . | with indentations, projections, ribs, or the like, for augmenting the adherence to the concrete |
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| E04C 5/04 | UGR3 | |
| E04C 5/06 | UGR2 | | . . | of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders |
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| E04C 5/065 | UGR3 | | . . . | Light-weight girders, e.g. with precast parts (light-weight girders in general E04C 3/08 , E04C 3/294) |
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| E04C 5/07 | UGR1 | | . | Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal (metal elements with non-structural coatings E04C 5/01) [5] |
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| E04C 5/08 | UGR1 | | . | Members specially adapted to be used in prestressed constructions |
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| E04C 5/10 | UGR2 | |
| E04C 5/12 | UGR1 | | . | Anchoring devices (tools or methods for tensioning E04G 21/12) [5] |
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| E04C 5/16 | UGR1 | | . | Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups (tools for connecting reinforcing elements E04G 21/12) |
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| E04C 5/18 | UGR2 | | . . | of metal or substantially of metal |
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| E04C 5/20 | UGR2 | | . . | of other material than metal or with only additional metal parts, e.g. concrete or plastics spacers with metal binding wires |
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