| E | SK | FIXED CONSTRUCTIONS |
| E04 | KL | BUILDING (layered materials, layered products in general B32B) |
| E04B | UKL | GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS (border constructions of openings in walls, floors, or ceilings E06B 1/00) |
| E04B 1/00 | HGR | 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; the particular parts of buildings, see the relevant groups for those parts) |
| E04B 1/02 | UGR1 | | . | Structures consisting primarily of load-supporting, block-shaped or slab-shaped elements (E04B 1/32 to E04B 1/36 take precedence) |
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| E04B 1/04 | UGR2 | | . . | the elements consisting of concrete, e.g. reinforced concrete, or other stone-like material |
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| E04B 1/06 | UGR3 | | . . . | the elements being prestressed |
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| E04B 1/08 | UGR2 | | . . | the elements consisting of metal |
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| E04B 1/10 | UGR2 | | . . | the elements consisting of wood |
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| E04B 1/12 | UGR2 | | . . | the elements consisting of other material |
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| E04B 1/14 | UGR2 | | . . | the elements being composed of two or more materials (of reinforced concrete E04B 1/04) |
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| E04B 1/16 | UGR1 | | . | Structures made from masses, e.g. concrete, cast or similarly formed in situ with or without making use of additional elements, such as permanent forms, sub-structures to be coated with load-bearing material (E04B 1/32 to E04B 1/36 take precedence) |
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| E04B 1/18 | UGR1 | | . | Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons (E04B 1/32 to E04B 1/36 take precedence; elongated load-supporting parts as elements, trusses, truss-like structures E04C 3/00) |
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| E04B 1/19 | UGR2 | | . . | Three-dimensional framework structures [2] |
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| E04B 1/20 | UGR2 | | . . | the supporting parts consisting of concrete, e.g. reinforced concrete, or other stone-like material |
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| E04B 1/21 | UGR3 | | . . . | Connections specially adapted therefor [2] |
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| E04B 1/22 | UGR3 | | . . . | with parts being prestressed |
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| E04B 1/24 | UGR2 | | . . | the supporting parts consisting of metal |
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| E04B 1/26 | UGR2 | | . . | the supporting parts consisting of wood |
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| E04B 1/28 | UGR2 | | . . | the supporting parts consisting of other material |
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| E04B 1/30 | UGR2 | | . . | the supporting parts being composed of two or more materials; Composite steel and concrete constructions (of reinforced concrete E04B 1/20) |
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| E04B 1/32 | UGR1 | | . | Arched structures; Vaulted structures; Folded structures (vaulted roofs E04B 7/08) |
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| E04B 1/34 | UGR1 | | . | Extraordinary structures, e.g. with suspended or cantilever parts supported by masts or tower-like structures enclosing elevators or stairs; Features relating to the elastic stability (E04B 1/342 , E04B 1/343 , E04B 1/348 take precedence; for floors E04B 5/43; buildings for special purposes, e.g. withstanding earthquake, E04H) |
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| E04B 1/342 | UGR1 | | . | Structures covering a large free area, whether open-sided or not, e.g. hangars, halls (roof trusses E04C 3/00; non-structural features for specified purposes, see the relevant groups of E04H) |
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| E04B 1/343 | UGR1 | | . | Structures characterised by movable, separable, or collapsible parts, e.g. for transport (movable roof parts E04B 7/16; floatable buildings B63B; small prefabricated buildings, transportable as a whole, E04H 1/12; small garages E04H 6/02; tents or canopies, in general E04H 15/00) |
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| E04B 1/344 | UGR2 | |
| E04B 1/346 | UGR2 | | . . | Rotary buildings; Buildings with rotary units, e.g. rooms |
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| E04B 1/348 | UGR1 | | . | Structures composed of units comprising at least considerable parts of two sides of a room, e.g. box-like or cell-like units closed or in skeleton form (wall units locating conduits or the like E04C 2/52) |
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| E04B 1/35 | UGR1 | | . | Extraordinary methods of construction, e.g. lift-slab, jack-block (E04B 1/34 takes precedence; falsework, shuttering for shaping walls, floors, ceilings or roofs for structures of particular shape in situ E04G 11/04; conveying or assembling of building materials E04G 21/00; working measures on existing buildings E04G 23/00) |
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| E04B 1/36 | UGR1 | | . | Bearings or like supports allowing movement (for bridges E01D 19/04; buildings withstanding earthquake E04H 9/02) |
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| E04B 1/38 | UGR1 | | . | Connections for building structures in general |
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| E04B 1/41 | UGR2 | | . . | Connecting devices specially adapted for embedding in concrete or masonry (spacers for cavity walls E04B 2/30 , E04B 2/44; connectors for reinforcing elements E04C 5/16; fastening frames to the border of openings E06B 1/56) |
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| E04B 1/48 | UGR2 | | . . | Dowels, i.e. members adapted to penetrate the surfaces of two parts and to take the shear stresses |
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| E04B 1/49 | UGR3 | | . . . | with self-penetrating parts, e.g. claw dowels |
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| E04B 1/58 | UGR2 | | . . | of bar-shaped building elements |
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| E04B 1/61 | UGR2 | | . . | of slab-shaped building elements with each other [5] |
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| E04B 1/62 | UGR1 | | . | Insulation or other protection; Elements or use of specified material therefor (chemical compositions C01 to C11; implements for applying insulation or sealings E04F 21/00; buildings to withstand, or to provide protection against, external undesired influences E04H 9/00; sealing pipes in walls or partitions F16L 5/02; shielding against dangerous radiation G21F; constructions of particular parts of buildings, see the relevant groups for those parts) |
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| E04B 1/64 | UGR2 | | . . | for making damp-proof; Protection against corrosion (sealings E04B 1/66) |
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| E04B 1/66 | UGR2 | | . . | Sealings (additions of anti-leak properties to plaster C04B; bituminous sealing masses C08L 95/00; sealings for hydraulic engineering work in general E02B 3/16; against ground humidity or ground water E02D 31/02; coverings against rain or other precipitations of the atmosphere E04D; composition of material or manufacture of sealing foils, see the relevant classes for these foils) |
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| E04B 1/68 | UGR3 | | . . . | of joints, e.g. expansion joints (packing for joints in roads or airfields E01C 11/02; expansion joints for bridges E01D 19/06; sealing joints between foundation piles E02D 5/14; joints in foundation structures E02D 29/16; devices for sealing the spaces or joints between roof-covering elements E04D 1/36; sealing joints between roof-covering elements E04D 3/38; construction of joints for flooring or floor layers made of masses in situ E04F 15/14) |
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| E04B 1/682 | UGR4 | | . . . . | formed in situ [5] |
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| E04B 1/684 | UGR4 | | . . . . | using preformed elastomeric elements [5] |
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| E04B 1/686 | UGR5 | | . . . . . | comprising a plurality of hollow, deformable internal cells [5] |
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| E04B 1/70 | UGR2 | | . . | Drying or keeping dry, e.g. by air vents (by sealings E04B 1/66; during erection E04G 21/28) |
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| E04B 1/72 | UGR2 | | . . | Pest control (by keeping dry E04B 1/70; impregnation of wood or like materials B27K) |
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| E04B 1/74 | UGR2 | | . . | Heat, sound or noise insulation, absorption, or reflection (forms of, or arrangements in, rooms for influencing or directing sound E04B 1/99); Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls (fire protection E04B 1/94; elements chiefly adapted for structural purposes E04C 1/00 to E04C 3/00; chiefly adapted for surface coverings E04F 13/00; as underlayers for floor coverings E04F 15/18; closures for wall or like openings E06B) |
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| E04B 1/76 | UGR3 | | . . . | specifically with respect to heat only (heat insulation in general F16L 59/00) |
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| E04B 1/78 | UGR4 | | . . . . | Heat insulating elements |
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| E04B 1/80 | UGR5 | |
| E04B 1/82 | UGR3 | | . . . | specifically with respect to sound only (noise damping in ducts or channels E04F 17/00; noise damping in general G10K 11/16) |
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| E04B 1/84 | UGR4 | | . . . . | Sound-absorbing elements |
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| E04B 1/86 | UGR5 | |
| E04B 1/88 | UGR3 | | . . . | Insulating elements for both heat and sound |
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| E04B 1/90 | UGR4 | |
| E04B 1/92 | UGR2 | | . . | Protection against other undesired influences or dangers (buildings providing protection against external dangers E04H 9/00; shielding against dangerous radiation G21F) |
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| E04B 1/94 | UGR3 | | . . . | against fire (fire-fighting A62C; impregnation of wood or similar materials B27K; fireproof doors E06B 5/16) |
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| E04B 1/98 | UGR3 | | . . . | against vibrations or shocks (on foundations E02D 31/08); against mechanical destruction, e.g. by air-raids (against incendiary damage only E04B 1/94; finishing work therefor E04F; buildings withstanding earthquake or the like, shelters, arrangements of splinter-catching walls E04H 9/00) |
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| E04B 1/99 | UGR1 | | . | Room acoustics, i.e. forms of, or arrangements in, rooms for influencing or directing sound (E04B 1/82 takes precedence; acoustics in general G10K 11/00; electric signal processing for producing a reverberation or echo sound G10K 15/08) |
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| E04B 2/00 | HGR | Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls (connections for building structures in general E04B 1/38; insulation for building in general E04B 1/62; building elements of relatively thin form for parts of buildings E04C 2/00) |
| E04B 2/02 | UGR1 | | . | built-up from layers of building elements |
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| E04B 2/04 | UGR2 | | . . | Walls having neither cavities between, nor in, the solid elements |
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| E04B 2/06 | UGR3 | | . . . | using elements having specially-designed means for stabilising the position |
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| E04B 2/08 | UGR4 | | . . . . | by interlocking of projections or inserts with indentations, e.g. of tongues, grooves, dovetails |
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| E04B 2/10 | UGR4 | | . . . . | by filling material with or without reinforcements in small channels in, or in grooves between, the elements |
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| E04B 2/12 | UGR3 | | . . . | using elements having a general shape differing from that of a parallelepiped |
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| E04B 2/14 | UGR2 | | . . | Walls having cavities in, but not between, the elements, i.e. each cavity being enclosed by at least four sides forming part of one single element |
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| E04B 2/16 | UGR3 | | . . . | using elements having specially designed means for stabilising the position |
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| E04B 2/18 | UGR4 | | . . . . | by interlocking of projections or inserts with indentations, e.g. of tongues, grooves, dovetails |
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| E04B 2/20 | UGR4 | | . . . . | by filling material with or without reinforcements in small channels in, or in grooves between, the elements |
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| E04B 2/22 | UGR3 | | . . . | using elements having a general shape differing from that of a parallelepiped |
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| E04B 2/24 | UGR3 | | . . . | the walls being characterised by fillings in some of the cavities forming load-bearing pillars or beams |
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| E04B 2/26 | UGR3 | | . . . | the walls being characterised by fillings in all cavities in order to form a wall construction |
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| E04B 2/28 | UGR2 | | . . | Walls having cavities between, but not in, the elements; Walls of elements each consisting of two or more parts kept in distance by means of spacers, all parts being solid |
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| E04B 2/30 | UGR3 | | . . . | using elements having specially designed means for stabilising the position; Spacers for cavity walls |
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| E04B 2/32 | UGR4 | | . . . . | by interlocking of projections or inserts with indentations, e.g. of tongues, grooves, dovetails |
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| E04B 2/34 | UGR4 | | . . . . | by filling material with or without reinforcements in small channels in, or in grooves between, the elements |
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| E04B 2/36 | UGR3 | | . . . | using elements having a general shape differing from that of a parallelepiped |
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| E04B 2/38 | UGR3 | | . . . | the walls being characterised by fillings in some of the cavities forming load-bearing pillars or beams |
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| E04B 2/40 | UGR3 | | . . . | the walls being characterised by fillings in all cavities in order to form a wall construction |
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| E04B 2/42 | UGR2 | | . . | Walls having cavities between, as well as in, the elements; Walls of elements each consisting of two or more parts, kept in distance by means of spacers, at least one of the parts having cavities |
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| E04B 2/44 | UGR3 | | . . . | using elements having specially designed means for stabilising the position; Spacers for cavity walls |
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| E04B 2/46 | UGR4 | | . . . . | by interlocking of projections or inserts with indentations, e.g. of tongues, grooves, dovetails |
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| E04B 2/48 | UGR4 | | . . . . | by filling material with or without reinforcements in small channels in, or in grooves between, the elements |
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| E04B 2/50 | UGR3 | | . . . | using elements having a general shape differing from that of a parallelepiped |
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| E04B 2/52 | UGR3 | | . . . | the walls being characterised by fillings in some of the cavities forming load-bearing pillars or beams |
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| E04B 2/54 | UGR3 | | . . . | the walls being characterised by fillings in all cavities in order to form a wall construction |
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| E04B 2/56 | UGR1 | | . | Walls of framework or pillarwork; Walls incorporating load-bearing elongated members (E04B 2/74 , E04B 2/88 take precedence; pillars E04C 3/30) |
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| E04B 2/58 | UGR2 | | . . | with elongated members of metal |
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| E04B 2/60 | UGR3 | | . . . | characterised by special cross-section of the elongated members |
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| E04B 2/62 | UGR4 | | . . . . | the members being formed of two or more elements in side-by-side relationship |
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| E04B 2/64 | UGR2 | | . . | with elongated members of concrete |
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| E04B 2/66 | UGR3 | | . . . | characterised by special cross-section of the elongated members |
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| E04B 2/68 | UGR3 | |
| E04B 2/70 | UGR2 | | . . | with elongated members of wood |
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| E04B 2/72 | UGR1 | |
| E04B 2/74 | UGR1 | | . | Removable non-load-bearing partitions; Partitions with a free upper edge (framed panels E04C 2/38) |
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| E04B 2/76 | UGR2 | | . . | with framework or posts of metal |
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| E04B 2/78 | UGR3 | | . . . | characterised by special cross-section of the frame members |
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| E04B 2/80 | UGR2 | | . . | with framework or posts of wood |
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| E04B 2/82 | UGR2 | | . . | characterised by the manner in which edges are connected to the building; Means therefor; Special details of easily-removable partitions |
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| E04B 2/84 | UGR1 | | . | Walls made by casting, pouring, or tamping in situ (E04B 2/02 , E04B 2/56 take precedence; forms therefor E04G 11/06; working of concrete or similar masses able to be cast or poured in situ E04G 21/02) |
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| E04B 2/86 | UGR2 | | . . | made in permanent forms |
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| E04B 2/88 | UGR1 | |
| E04B 2/90 | UGR2 | | . . | comprising panels directly attached to the structure [4] |
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| E04B 2/92 | UGR3 | | . . . | Sandwich-type panels [4] |
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| E04B 2/94 | UGR3 | | . . . | Concrete panels (E04B 2/92 takes precedence) [4] |
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| E04B 2/96 | UGR2 | | . . | comprising panels attached to the structure through mullions or transoms [4] |
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| E04B 5/00 | HGR | Floors; Floor construction with regard to insulation; Connections specially adapted therefor (elements for floors, e.g. bricks, stones, filling bodies, girders, E04C; flooring as finishing work, insulation of flooring, sectional false floors, e.g. for computers, E04F 15/00) [5] |
| E04B 5/02 | UGR1 | | . | Load-carrying floor structures formed substantially of prefabricated units (E04B 5/43 to E04B 5/48 take precedence) |
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| E04B 5/04 | UGR2 | | . . | with beams of concrete or other stone-like material, e.g. asbestos cement (E04B 5/08 , E04B 5/14 take precedence) |
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| E04B 5/06 | UGR3 | | . . . | placed against one another |
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| E04B 5/08 | UGR2 | | . . | assembled of block-shaped elements, e.g. hollow stones (E04B 5/14 takes precedence; floors composed of reinforced brickwork E04B 5/44) |
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| E04B 5/10 | UGR2 | | . . | with metal beams or girders, e.g. with steel lattice girders (E04B 5/14 takes precedence) |
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| E04B 5/12 | UGR2 | | . . | with wooden beams (E04B 5/14 takes precedence) |
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| E04B 5/14 | UGR2 | | . . | with beams or girders laid in two directions |
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| E04B 5/16 | UGR1 | | . | Load-carrying floor structures wholly or partly cast or similarly formed in situ (E04B 5/43 to E04B 5/48 take precedence; floors merely characterised by the prefabricated elements E04C) |
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| E04B 5/17 | UGR2 | | . . | Floor structures partly formed in situ |
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| E04B 5/18 | UGR3 | | . . . | with stiffening ribs or other beam-like formations wholly cast between filling members |
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| E04B 5/19 | UGR4 | | . . . . | the filling members acting as self-supporting permanent forms (E04B 5/21 takes precedence) |
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| E04B 5/21 | UGR4 | | . . . . | Cross-ribbed floors |
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| E04B 5/23 | UGR3 | | . . . | with stiffening ribs or other beam-like formations wholly or partly prefabricated (with all load-carrying parts substantially consisting of prefabricated units E04B 5/02) |
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| E04B 5/26 | UGR4 | | . . . . | with filling members between the beams (E04B 5/28 takes precedence) |
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| E04B 5/28 | UGR4 | | . . . . | Cross-ribbed floors |
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| E04B 5/29 | UGR4 | | . . . . | the prefabricated parts of the beams consisting wholly of metal (E04B 5/28 takes precedence) |
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| E04B 5/32 | UGR2 | | . . | Floor structures wholly cast in situ with or without form units or reinforcements |
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| E04B 5/36 | UGR3 | | . . . | with form units as part of the floor |
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| E04B 5/38 | UGR4 | | . . . . | with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element |
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| E04B 5/40 | UGR5 | | . . . . . | with metal form slabs |
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| E04B 5/43 | UGR1 | | . | Floor structures of extraordinary design; Features relating to the elastic stability; Floor structures specially designed for resting on columns only, e.g. mushroom floors (extraordinary constructions in general E04B 1/34) |
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| E04B 5/44 | UGR1 | | . | Floors composed of stones, mortar, and reinforcing elements (with inserts of glass E04B 5/46) |
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| E04B 5/46 | UGR1 | | . | Special adaptation of floors for transmission of light, e.g. by inserts of glass (of ceilings E04B 9/32; block- shaped elements E04C 1/42; slab- or sheet-shaped elements E04C 2/54; for roof covering E04D 3/06) [5] |
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| E04B 5/48 | UGR1 | | . | Special adaptations of floors for incorporating ducts, e.g. for heating or ventilating (in block-shaped elements E04C 1/39; in slab- or sheet-shaped elements E04C 2/52) |
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| E04B 7/00 | HGR | Roofs; Roof construction with regard to insulation (structures for roofs as well as for floors E04B 5/00; ceilings E04B 9/00; greenhouses A01G 9/14; large containers having floating covers B65D 88/34; roof trusses, truss-like structures, joists E04C 3/02; roof coverings E04D) [5] |
| E04B 7/02 | UGR1 | | . | with plane sloping surfaces, e.g. saddle roofs (E04B 7/12 takes precedence) |
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| E04B 7/04 | UGR2 | | . . | supported by horizontal beams or the equivalent resting on the walls (E04B 7/06 takes precedence) |
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| E04B 7/06 | UGR2 | | . . | Constructions of roof intersections or hopped ends |
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| E04B 7/08 | UGR1 | |
| E04B 7/10 | UGR2 | | . . | Shell structures, e.g. of hyperbolic-parabolic shape; Grid-like formations acting as shell structures; Folded structures |
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| E04B 7/12 | UGR1 | | . | formed in bays, e.g. sawtooth roofs (E04B 7/10 takes precedence) |
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| E04B 7/14 | UGR1 | | . | Suspended roofs (suspended tents or canopies, in general E04H 15/04) |
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| E04B 7/16 | UGR1 | | . | Roof structures with movable roof parts (buildings for special purposes E04H) |
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| E04B 7/18 | UGR1 | | . | Special structures in or on roofs, e.g. dormer windows (in connection with roof coverings E04D 13/00 , especially domes E04D 13/03) |
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| E04B 7/20 | UGR1 | | . | Roofs consisting of self-supporting slabs, e.g. able to be loaded [5] |
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| E04B 7/22 | UGR2 | | . . | the slabs having insulating properties, e.g. being laminated with layers of insulating material (E04B 7/24 takes precedence) [6] |
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| E04B 7/24 | UGR2 | | . . | the slabs being collapsible, e.g. for transport [6] |
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| E04B 9/00 | HGR | Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation (ceilings used as forms for making floors E04B 5/00; coverings or linings for ceilings E04F 13/00) [5] |
| E04B 9/02 | UGR1 | | . | having means for ventilation or vapour discharge [5] |
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| E04B 9/04 | UGR1 | |
| E04B 9/06 | UGR1 | | . | characterised by constructional features of the supporting construction [5] |
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| E04B 9/08 | UGR2 | | . . | having the capability of expansion [5] |
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| E04B 9/10 | UGR2 | | . . | Connections between parallel members of the supporting construction (E04B 9/08 takes precedence) [5] |
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| E04B 9/12 | UGR2 | | . . | Connections between non-parallel members of the supporting construction (E04B 9/08 takes precedence) [5] |
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| E04B 9/14 | UGR3 | | . . . | all the members being discontinuous and lying at least partly in the same plane [5] |
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| E04B 9/16 | UGR3 | | . . . | the members lying in different planes [5] |
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| E04B 9/18 | UGR1 | | . | Means for suspending the supporting construction [5] |
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| E04B 9/20 | UGR2 | |
| E04B 9/22 | UGR1 | | . | Connection of slabs, sheets or the like to the supporting construction [5] |
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| E04B 9/24 | UGR2 | | . . | with the slabs, sheets or the like positioned on, or held against, horizontal flanges of the supporting construction [5] |
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| E04B 9/26 | UGR3 | | . . . | by means of snap action of elastically deformable elements [5] |
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| E04B 9/28 | UGR2 | | . . | with the slabs, sheets or the like having grooves engaging with horizontal flanges of the supporting construction or accessory means connected thereto [5] |
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| E04B 9/30 | UGR1 | | . | characterised by edge details of the ceiling, e.g. securing to an adjacent wall [5] |
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| E04B 9/32 | UGR1 | | . | Translucent ceilings, i.e. permitting both the transmission and diffusion of light (E04B 9/34 takes precedence; lighting F21) [5] |
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| E04B 9/34 | UGR1 | | . | Open-work ceilings, e.g. lattice type (E04B 9/30 takes precedence) [5] |
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| E04B 9/36 | UGR2 | | . . | consisting of parallel slats [5] |
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| E04B 101/00 | HGR | Fire protection [5] |
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| E04B 103/00 | HGR | Material constitution of slabs, sheets or the like [5] |
| E04B 103/02 | UGR1 | | . | of ceramics, concrete or other stone-like material [5] |
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| E04B 103/04 | UGR1 | | . | of plastics, fibrous material or wood [5] |
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| E04B 103/06 | UGR1 | |