CN215442346U - Bay window component - Google Patents

Abstract

The utility model relates to a bay window component comprising a steel skeleton (1) consisting of U-shaped steel (14) having an internal curl on one or both legs, the steel skeleton having an upper storey (11) for forming a bay window floor of an upper storey building, a lower storey (12) for forming a bay window roof of a lower storey building, and a vertical storey (13) connecting the two, the vertical storey for forming a wall. The upper layer and the lower layer of the steel skeleton respectively comprise at least one U-shaped steel which is open upwards, and the vertical layer of the steel skeleton comprises at least one U-shaped steel which is open outwards. The concrete is poured into the inner cavity of the U-shaped steel through the opening of the U-shaped steel, concrete pouring layers are respectively formed above the upper layer and the lower layer of the steel skeleton and on the outer side of the vertical layer of the steel skeleton, and the steel skeleton and the concrete form a steel-concrete common stress body. The bay window component can be manufactured with low cost, has a firm and stable structure and is easy to install.

Description

Bay window component

Technical Field

The present invention relates to the field of construction, and more particularly to a bay window component which can be installed as a prefabricated component in a building.

Background

In conventional building construction, the bay window element is cast in place, which means a lower efficiency of construction. Prefabricated parts can be adopted in building construction to improve the construction efficiency.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to provide a bay window component which can be manufactured cost-effectively, has good structural robustness and is easy to install in a building.

The object may be met by a bay window element comprising a steel skeleton constructed of U-section steel having an internal curl on one or both legs, the steel skeleton having an upper level for forming a bay window floor of an upper building, a lower level for forming a bay window ceiling of a lower building, and a vertical level connecting the upper level and the lower level for forming a wall; the upper layer and the lower floor of steel skeleton include at least one U shaped steel open-ended upwards respectively, the perpendicular layer of steel skeleton includes at least one U shaped steel open-ended outwards, wherein, through concreting, the concrete pours the inside cavity of U shaped steel through the opening of U shaped steel in, and form the concrete placement layer respectively in the outside on the upper strata and the lower floor of steel skeleton and the perpendicular layer of steel skeleton, the steel skeleton forms the common atress body of steel concrete with the concrete.

Because the inner curled edge of the U-shaped steel is embedded into the concrete, the steel skeleton and the concrete form a firm steel-concrete common stress body. The bay window component can be produced cost-effectively on the one hand and has good structural robustness on the other hand.

It will be appreciated that the steel skeleton may be formed entirely of U-section steel; or may be composed primarily of U-section steel and may additionally include other section steel such as i-section steel.

Herein, the terms "outside" and "inside" may be with reference to a building. The "outer side" may refer to a side facing the outside of the building, and the "inner side" may refer to a side facing the inside of the building.

In some embodiments, the upper layer, the lower layer and the vertical layer of the steel skeleton may respectively include a plurality of U-shaped steels, especially U-shaped steels having the same opening direction, and preferably, the upper layer, the lower layer and the vertical layer of the steel skeleton may respectively include a plurality of (e.g., 3 to 6) U-shaped steels having the same cross section, having the same opening direction and being parallel to each other.

In some embodiments, the steel skeleton may be made by welding of respective U-shaped steels. The steel skeleton may be made mainly or entirely by welding. In addition to or instead of the at least one welded connection, a screw connection can be used.

In some embodiments, the upper layer of the steel skeleton may include an outer, laterally extending, outwardly opening, first U-shaped steel and a plurality (e.g., 3-6) of parallel, upwardly opening second U-shaped steel extending perpendicularly inwardly from the first U-shaped steel.

In some embodiments, the lower layer of the steel skeleton may include an outer, laterally extending, outwardly opening, first U-shaped steel and a plurality (e.g., 3-6) of parallel, upwardly opening second U-shaped steel extending perpendicularly inwardly from the first U-shaped steel.

In some embodiments, each second U-shaped steel of the upper layer of the steel skeleton and one second U-shaped steel of the lower layer of the steel skeleton and one U-shaped steel of the vertical layer of the steel skeleton may be in a common plane.

In some embodiments, the first and second U-shaped steels may be aligned at their lower sides.

In some embodiments, the first U-shaped steel may have a smaller width than the second U-shaped steel.

In some embodiments, at the transition between the upper and vertical layers, there may be a plurality of U-shaped steel sections extending in a straight line, each U-shaped steel section connecting two adjacent second U-shaped steels of the upper layer and/or two adjacent U-shaped steels of the vertical layer.

In some embodiments, at the transition between the vertical layer and the lower layer, a plurality of U-shaped steel sections extending in a straight line may be provided, each U-shaped steel section connecting two adjacent second U-shaped steels of the lower layer and/or connecting two adjacent U-shaped steels of the vertical layer.

In some embodiments, each U-shaped steel of the steel skeleton may have two inner beads, which may be in one plane, and preferably, inner edges of the two inner beads may be parallel to each other and define an opening of the U-shaped steel.

In some embodiments, the width of each of the inside hems may be between 1/10 and 2/5, such as between 1/6 and 1/3, such as about 1/4, of the width of the U-shaped steel.

In some embodiments, the inner bead may extend continuously over an extended length of the U-shaped steel; or the internal bead may comprise a plurality of sections following one another over the extended length of the U-shaped steel. The individual segments can be of identical or different design.

In some embodiments, the internal bead may be planar or curved.

In some embodiments, the concrete cast layer above the upper layer of the steel skeleton may have a drainage slope.

In some embodiments, the concrete cast layer above the lower layer of the steel skeleton may have a drainage slope.

In some embodiments, the bay window floor of the bay window component projects inwardly relative to the wall of the bay window component, preferably by 1/10 to 1/3, preferably 1/6 to 1/4, of the depth dimension of the bay window floor.

In some embodiments, the bay window component may have at least one of the following insulation measures:

-fixing a thermal break bridge, for example a corrosion-resistant wood thermal break bridge, on the underside of the upper layer of the steel skeleton;

-fixing a thermal break bridge, for example a corrosion-resistant wood thermal break bridge, on the lower side of the lower layer of the steel skeleton;

-fixing a thermal break bridge, for example a corrosion-resistant wood thermal break bridge, inside the vertical layer of the steel skeleton;

-filling insulation boards in gaps between adjacent U-shaped steels on the upper layer of the steel skeleton;

-filling insulation boards in gaps between adjacent U-shaped steels of the lower layer of the steel skeleton;

-filling a thermal insulation board in the gap between adjacent U-shaped steels of the vertical layer of the steel skeleton.

In some embodiments, the corrosion resistant wood thermal break bridge may be comprised of cross-glued wood.

In some embodiments, the insulation board may be a thermoset polystyrene board, a rock wool board, an aerogel fiberglass composite insulation, or the like.

In some embodiments, the insulation board may act as a form when pouring concrete.

In some embodiments, the bay window floor of the bay window component may be closed in the lower outdoor area with a fibre cement panel.

In some embodiments, the bay window roof of the bay window component may be closed in the lower outdoor area with a fibre cement board.

In some embodiments, the bay window top panel of the bay window component may be closed over substantially the entire underside with a fibre cement panel.

In some embodiments, the fiber cement panel may have a drip trough. Rainwater cannot substantially flow from the outside of the fiber cement board to the inside of the fiber cement board through the drip grooves.

In some embodiments, the bay window component may be configured to be secured to a transversely extending structural beam by a plurality of bolts (e.g., 2-10, preferably 3-9, e.g., 4-6), wherein the bay window component has a plurality of pre-embedded threaded sleeves for receiving the bolts.

In some embodiments, the threaded sleeve may be welded to the steel skeleton U-section, for example to the flat underside of the U-section, or to the legs of the U-section.

In some embodiments, the vertical layer of the steel skeleton may have an upper row of threaded sleeves and the lower layer of the steel skeleton may have a lower row of threaded sleeves. In an alternative embodiment, the vertical layer of the steel skeleton may also have two rows of upper and lower threaded sleeves. The number of the threaded sleeves may be designed to be more than the predetermined number of bolts so that more bolts than the predetermined design case can be installed as necessary or the installation position of the bolts can be flexibly selected.

In some embodiments, the structural beam may have a plurality of upper L-shaped attachments and a plurality of lower L-shaped attachments, each for mounting a bolt which is screwed into a corresponding threaded sleeve. The L-shaped attachment may be welded to the structural beam.

In some embodiments, the bolt heads of the bolts mounted above the structural beams may be cast in the floor slab after being screwed into the respective threaded sleeves together with the respective L-shaped attachments.

In some embodiments, the bay window component may be configured to be mounted between and welded to two vertically extending structural posts.

In some embodiments, a major portion of the bay window component or the entire bay window component may be a prefabricated component.

It is to be noted that the above-mentioned features, the features to be mentioned below and the features shown in the drawings individually can be combined with one another as desired, provided that the combined features are not mutually inconsistent. All possible combinations of features are expressly recited herein.

Drawings

The utility model is explained in more detail below with reference to the figures by means of exemplary embodiments.

Wherein:

FIG. 1 is a side view of a bay window assembly in an installed condition according to one embodiment of the utility model.

Fig. 2 is a simplified side view of the fly window member of fig. 1.

Fig. 3 is a plan view of the vertical layer of the steel skeleton of the bay window component of fig. 1.

FIG. 4 is an enlarged partial view of the steel skeleton of the fly window component of FIG. 1 in the outer edge region.

Detailed Description

Fig. 1 is a side view of a bay window assembly in an installed state according to an embodiment of the present invention, and fig. 2 is a simplified side view of the bay window assembly of fig. 1, in which concrete of the bay window assembly is omitted to more clearly describe the structure of the bay window assembly. The floor panels 3, which may constitute the floor of an upper building and the ceiling of a lower building, are only partially shown. The structural beam 2 extends transversely and in close proximity to the floor slab 3.

The bay window component comprises a steel framework 1 which is formed by U-shaped steel 14, in particular welded. As shown in FIG. 4, the U-shaped steel 14 may have an inside curl 16 on both legs. The two internal beads 16 may lie in a plane, and the inner edges of the two internal beads 16 may be parallel to each other and define the opening of the U-shaped steel 14. The plane may be parallel to the flat bottom surface of the U-shaped steel. The width of each of the inside hems 16 may be between 1/10 and 2/5, such as between 1/6 and 1/3, such as about 1/4, of the width of the U-shaped steel 14. The inner bead 16 may extend continuously over the entire extension length of the U-shaped steel 14. Alternatively, the inner bead 16 may comprise a plurality of sections separated from one another, successive to one another over the entire extension of the U-shaped steel 14. Alternatively, the inner bead 16 may also be curved instead of planar.

The steel skeleton 14 may have an upper layer 11, a lower layer 12, and a vertical layer 13 connecting the upper layer 11 and the lower layer 12. The upper storey 11 is used to form the bay window floor of the upper storey building, the lower storey 12 is used to form the bay window roof of the lower storey building and the vertical storey 13 is used to form the wall.

The upper layer 11 of the steel skeleton 1 may include at least one laterally extending U-section steel and at least one longitudinally extending U-section steel, i.e., in the depth direction of the building. At least one of the U-shaped steels may be upwardly open for forming a strong steel-concrete common stress body, wherein the inner turn of the U-shaped steel is embedded in the concrete. Advantageously, the upper layer 11 of the steel skeleton 1 may comprise an outer, laterally extending, outwardly open first U-profile 14a and a plurality (e.g. 3-6) of parallel, upwardly open second U-profiles 14b extending perpendicularly inwardly from the first U-profile 14 a. Alternatively, the first U-shaped steel 14a may also be open upwards and preferably have a reduced height in order to form a drainage slope 10a in the region of the first U-shaped steel. The drainage slope 10a may extend from the window unit 4a to the outer edge. Advantageously, the second U-shaped steels 14b of the upper layer 11 may have the same cross section. A partially enlarged view of the laterally extending outwardly opening first U-shaped steel 14a and the longitudinally extending upwardly opening second U-shaped steel 14b is depicted in fig. 4. As can be seen from fig. 4, the first U-shaped steel 14a and the second U-shaped steel 14b may be aligned at their lower sides. The first U-shaped steel may have a reduced width and/or height compared to the second U-shaped steel.

The lower layer 12 of the steel skeleton 1 may include at least one laterally extending U-shaped steel and at least one longitudinally extending U-shaped steel, i.e., in the inside-outside direction of the building. At least one of the U-shaped steels may be upwardly open for forming a strong steel-concrete common stress body, wherein the inner turn of the U-shaped steel is embedded in the concrete. Advantageously, the lower layer 12 of the steel skeleton 1 may comprise an outer, laterally extending, outwardly open first U-profile 14a and a plurality (e.g. 3-6) of parallel, upwardly open second U-profiles 14b extending perpendicularly inwardly from the first U-profile 14 a. Alternatively, the first U-shaped steel 14a may also be open upwards and preferably have a reduced height in order to form a drainage slope 10b in the region of the first U-shaped steel. The drainage slope 10b may be configured the same as or similar to the drainage slope 10 a. Advantageously, each of the second U-shaped steels 14b of the lower layer 12 may have the same cross section. It is particularly advantageous that the second U-shaped steel of the upper layer 11 and the second U-shaped steel of the lower layer 12 may have the same cross section.

The vertical layer 13 of the steel skeleton 1 may include a plurality of (e.g., 3 to 6) vertically extending U-shaped steels open to the outside. The number of vertically extending U-section steels of the vertical layer 13 may be the same as or different from the number of second U-section steels of the upper layer 11 and the number of second U-section steels of the lower layer 12. Advantageously, the U-shaped steels 14 of the vertical layers 13 are open towards the outside and parallel to each other. Advantageously, the cross section of the vertically extending U-section steel of the vertical layer 13 may be identical to the cross section of the second U-section steel of the upper layer 11 and the cross section of the second U-section steel of the lower layer 12. It is particularly advantageous if each second U-profile of the upper layer 11 of the steel skeleton 1 lies in a common plane with one second U-profile of the lower layer 12 of the steel skeleton 1 and one U-profile of the vertical layer 13 of the steel skeleton 1.

At the transition between the upper layer 11 and the vertical layer 13, a plurality of U-shaped steel sections extending in a straight line may be provided, each U-shaped steel section connecting two adjacent second U-shaped steels of the upper layer 11 and/or connecting two adjacent U-shaped steels of the vertical layer. Similarly, at the transition between the vertical layer 13 and the lower layer 12, there may be a plurality of U-shaped steel sections extending in a straight line, each U-shaped steel section connecting two adjacent second U-shaped steels of the lower layer 12 and/or connecting two adjacent U-shaped steels of the vertical layer 13.

The upper storey 11 of the steel skeleton 1 of the bay window component may extend inwardly beyond the vertical storey 13 of the steel skeleton 1 and, as a result, the bay window floor of the upper storey building may extend beyond the wall substantially defined by the steel skeleton 1 and the bakelite thermal break bridge 7.

In the manufacture of the bay window component, the steel skeleton 1 may be first welded from the U-section steel 14. Then, in each layer of the steel skeleton 1, the thermal cutoff bridges 8a and 8b of the anticorrosive wood are fixed on the lower sides of the U-shaped steels of the upper and lower layers 11 and 12 and the thermal cutoff bridges 7 of the anticorrosive wood are fixed on the inner sides (i.e., the sides facing the interior of the building) of the U-shaped steels of the vertical layer 13. And then the heat insulation plates are filled in gaps between adjacent U-shaped steels of each layer of the steel framework 1. These insulation boards can be used as non-dismantling forms for casting concrete. Concrete is then cast simultaneously or successively in the individual layers of the steel skeleton 1. The amount of concrete poured can be chosen such that the concrete fills the cavity of the U-section steel through the opening of the U-section steel and creates one concrete-poured layer 21, 22, 23 on each layer of the steel skeleton 1, in particular above the upper and lower layers 11, 12 of the steel skeleton 1 and outside the vertical layer 13 of the steel skeleton 1, respectively, as shown in fig. 1. Due to the fact that the inner turned edge 16 of the U-shaped steel 14 is embedded into the concrete, the steel skeleton 1 and the concrete can form a firm steel-concrete common stress body.

The corrosion protection wood thermal break bridges can indirectly or directly reduce heat conduction between the exterior and the interior of the building. As an equivalent measure to the thermal break of the corrosion-resistant wood, in principle any suitable material, in particular a strip-type material, having a lower thermal conductivity than the U-section steel can be used. The corrosion-resistant wood thermal bridge cut for each layer of the steel skeleton 1 can be prefabricated as a wood frame which can then be fixed to the U-section steel, for example by means of self-tapping screws.

Below the rot-proof wood thermal break bridges 8a, 9a, at least in the areas exposed to the outside, fibre cement boards 9a, 9b can be applied. As shown in fig. 1, the fiber cement sheet 9b may extend substantially the entire depth dimension of the bay window ceiling. It is however possible that the fibre cement board 9b only extends in the area of the underside of the bay window ceiling outside the window unit 4b, whereas no fibre cement board is provided in the area of the underside of the bay window ceiling inside the window unit 4 b. The fibre cement boards 9a, 9b may each be provided with a drip groove, which may be adjacent to the outer edge of the fibre cement board, so that rain water cannot substantially flow over the drip grooves towards the inside of the fibre cement board. The fibre cement boards 9a, 9b may be applied to the bay window component at a convenient time, preferably already at the time of prefabrication of the bay window component. Alternatively, at least the fibre cement sheet 9a may be applied to the bay window component after it has been lifted.

The bay window component may be configured to be secured to the transversely extending structural beam 2 by a plurality of bolts 5, for example by 2-4 bolts 5 above the structural beam 2 and 2-4 bolts 5 below the structural beam 2. To this end, the bay window component may have a plurality of pre-embedded threaded sleeves 15 for receiving bolts 5. The threaded sleeve 15 may be welded to the steel skeleton U-section.

Fig. 3 is a plan view of the vertical layer 13 of the steel skeleton 1 of the bay window component of fig. 1. As shown in fig. 3, the vertical layer 13 of the steel skeleton 1 has an upper row of five welded threaded sleeves 15, wherein each vertically extending U-shaped steel 14 of the vertical layer 13 has one welded threaded sleeve 15. The laterally extending U-section steel 14 below the vertical layer 13 has a row of five welded threaded sleeves 15. The lower, laterally extending U-section steel can also be considered as a constituent of the lower layer 12 of the steel skeleton 1. In an embodiment not shown, the lower laterally extending U-section steel as shown in fig. 4 may be replaced by a plurality of U-section steel sections extending in a straight line, each U-section steel section connecting two adjacent second U-section steels of the lower tier 12 and/or connecting two adjacent U-section steels of the vertical tier 13. It is possible that the vertical layer 13 of the steel skeleton 1 may have two rows of upper and lower threaded sleeves 15 on the vertically extending U-section steel 14, wherein each vertically extending U-section steel 14 of the vertical layer 13 may have two welded upper and lower threaded sleeves 15. In the embodiment shown, there are ten threaded sleeves 15. It will be appreciated, however, that it is not necessary that each threaded sleeve be screwed into a bolt 5. The number of bolts 5 can be selected according to the actual need, for example, only two upper bolts 5 and two lower bolts 5 can be installed.

In order to secure the bay window component to the structural beam 2 when lifting the bay window component, the structural beam 2 may have a plurality of upper L-shaped attachments 6 and a plurality of lower L-shaped attachments 6, each of which may be used to mount a bolt 5, the bolts 5 being screwed into corresponding threaded sleeves 15. As an additional measure, in the floor slab 3, in the region of the L-shaped attachments 6, a gap is reserved and, after the installation of the bolts 5, concrete is additionally poured at the reserved gap, so that the bolt heads of the bolts 5 above the structural beam 2 are poured in the floor slab together with the respective L-shaped attachments 6. Additionally, the bay window component may be configured to fit between and be welded to two vertically extending structural posts, not shown.

The floor slab 3 may be a laminated floor slab and likewise comprises a skeleton of U-section steel which forms a steel-concrete co-bearing body with the set concrete by casting the concrete. The structural beam 2 may comprise square steel tubes in which concrete is cast to form a steel tube concrete beam.

It is noted that the terminology used herein is for the purpose of describing particular aspects only and is not intended to be limiting of the disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be understood that the terms "comprises" and "comprising," and other similar terms, when used in this specification, specify the presence of stated operations, elements, and/or components, but do not preclude the presence or addition of one or more other operations, elements, components, and/or groups thereof. The term "and/or" as used herein includes all arbitrary combinations of one or more of the associated listed items. In the description of the drawings, like reference numerals refer to like elements throughout.

The thickness of elements in the figures may be exaggerated for clarity. It will be further understood that if an element is referred to as being "on," "coupled to" or "connected to" another element, it can be directly on, coupled or connected to the other element or intervening elements may be present. Conversely, if the expressions "directly on … …", "directly coupled with … …", and "directly connected with … …" are used herein, then there are no intervening elements present. Other words used to describe the relationship between elements, such as "between … …" and "directly between … …", "attached" and "directly attached", "adjacent" and "directly adjacent", etc., should be similarly interpreted.

Terms such as "top," "bottom," "above," "below," "over," "under," and the like, may be used herein to describe one element, layer or region's relationship to another element, layer or region as illustrated in the figures. It will be understood that these terms are intended to encompass other orientations of the device in addition to the orientation depicted in the figures.

It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. Thus, a first element could be termed a second element without departing from the teachings of the present inventive concept.

It is also contemplated that all of the exemplary embodiments disclosed herein may be combined with each other as desired.

Finally, it is pointed out that the above-described embodiments are only intended to be understood as an example of the utility model and do not limit the scope of protection of the utility model. It will be apparent to those skilled in the art that modifications may be made in the foregoing embodiments without departing from the scope of the utility model.

Claims (23)

1. A bay window element, characterised in that it comprises a steel skeleton (1) made of U-section steel (14) having an internal curl (16) on one or both legs, the steel skeleton having an upper level (11) for forming a bay window floor of an upper building, a lower level (12) for forming a bay window ceiling of a lower building and a vertical level (13) connecting the upper and lower levels for forming a wall;

the upper layer and the lower layer of the steel skeleton respectively comprise at least one U-shaped steel with an upward opening, the vertical layer of the steel skeleton comprises at least one U-shaped steel with an outward opening, concrete is poured into an inner cavity of the U-shaped steel through the opening of the U-shaped steel by pouring concrete, concrete pouring layers (21, 22 and 23) are respectively formed above the upper layer and the lower layer of the steel skeleton and on the outer side of the vertical layer of the steel skeleton, and the steel skeleton and the concrete form a steel-concrete common stress body.

2. A bay window structure as claimed in claim 1, in which the upper, lower and vertical layers of the steel skeleton each comprise a plurality of U-shaped steel sections having the same opening direction.

3. A bay window structure as claimed in claim 1, in which the upper, lower and vertical layers of the steel skeleton each comprise a plurality of U-shaped steel of the same cross-section and having the same opening direction, parallel to each other.

4. A bay window component as claimed in claim 1, in which the steel skeleton is made by welding of U-shaped steel sections.

5. A bay window element as claimed in claim 1, wherein at least one of the upper and lower layers of the steel skeleton comprises an outer, laterally extending, outwardly open first U-section steel (14a) and a plurality of parallel, upwardly open second U-section steel (14b) extending perpendicularly inwardly from the first U-section steel.

6. A bay window component as claimed in claim 5, wherein each second U-shaped steel of the upper tier of steel skeleton lies in a common plane with one second U-shaped steel of the lower tier of steel skeleton and one U-shaped steel of the vertical tier of steel skeleton.

7. A bay window component as claimed in claim 5, wherein the first and second U-section steels are aligned on their undersides.

8. A bay window component as claimed in claim 1, in which at the transition between the upper and vertical layers of the steel skeleton there are a plurality of U-section steel sections extending in a straight line, each U-section steel section connecting two adjacent second U-section steels of the upper layer of the steel skeleton and/or connecting two adjacent U-section steels of the vertical layer of the steel skeleton.

9. A bay window component as claimed in claim 1, wherein at the transition between the lower and vertical layers of the steel skeleton there are a plurality of U-section steel sections extending in a straight line, each U-section steel section connecting two adjacent second U-section steels of the lower layer of the steel skeleton and/or connecting two adjacent U-section steels of the vertical layer of the steel skeleton.

10. A bay window element as claimed in any of claims 1 to 9, in which the bay window floor of the bay window element projects inwardly with respect to the wall.

11. A bay window component as claimed in any one of claims 1 to 9, wherein the steel skeleton U-section steel has two internal beads lying in one plane, the internal edges of the two internal beads being parallel to one another and defining the opening of the U-section steel.

12. A bay window component as claimed in claim 11, in which the width of each internal bead is between 1/10 and 2/5 of the width of the U-section steel.

13. A bay window element as claimed in any one of claims 1 to 9, wherein at least one of the concrete cast above the upper level of the steel skeleton and the concrete cast above the lower level of the steel skeleton has a drainage slope (10a, 10 b).

14. A bay window component as claimed in any one of claims 1 to 9, wherein the bay window component has at least one of the following thermal insulation measures:

-fixing a thermal break bridge on the underside of the upper layer of the steel skeleton;

-fixing a thermal break bridge on the lower side of the lower layer of the steel skeleton;

-fixing a thermal break bridge inside the vertical layer of steel skeleton;

-filling insulation boards in gaps between adjacent U-shaped steels on the upper layer of the steel skeleton;

-filling insulation boards in gaps between adjacent U-shaped steels of the lower layer of the steel skeleton;

-filling a thermal insulation board in the gap between adjacent U-shaped steels of the vertical layer of the steel skeleton.

15. A bay window arrangement as claimed in any of claims 1 to 9, wherein at least one of the bay window floor and bay window ceiling of the bay window arrangement is closed in the lower outdoor region by a fibre cement panel.

16. A bay window assembly as claimed in claim 15, wherein the fibre cement board has drip channels.

17. A bay window component as claimed in any one of claims 1 to 9, wherein the bay window component is configured to be secured to a transversely extending structural beam (2) by a plurality of bolts (5), wherein the bay window component has a plurality of pre-embedded threaded sleeves for receiving the bolts.

18. A bay window component as claimed in claim 17, in which the threaded sleeve is welded to the steel skeleton U-section.

19. A fluttering window member according to claim 18,

the vertical layer of the steel skeleton is provided with a row of threaded sleeves at the upper part, and the lower layer of the steel skeleton is provided with a row of threaded sleeves at the lower part; or

The vertical layer of the steel skeleton is provided with an upper row of threaded sleeves and a lower row of threaded sleeves.

20. A bay window component as claimed in claim 17, characterised in that the structural beam has a plurality of upper L-shaped appendages (6) and a plurality of lower L-shaped appendages (6), each for mounting a bolt (5) which is screwed into a respective threaded sleeve.

21. A bay window component as claimed in claim 17, wherein the heads of the bolts above the structural beams are poured into the floor slab after being screwed into the respective threaded sleeves.

22. A bay window component as claimed in any of claims 1 to 9, wherein the bay window component is configured to be mounted between and welded to two vertically extending structural posts.

23. A bay window component as claimed in any of claims 1 to 9, in which a major portion of the bay window component or the entire bay window component is a prefabricated component.

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