Projectile-resistant wall assembly

Abstract

The present invention relates to a wall assembly that is resistant to ballistic projectiles. The assembly is useful for partitions and exterior walls. The wall assembly comprises a sub-structure made of framing members with building boards attached to two opposite sides of the sub-substructure to form a first side of the wall and a second side of the wall, the first side of the wall comprising at least one layer S1LF of at least one gypsum fiberboard, the at least one layer S1LF having a total thickness of at least 25 mm, the first side of the wall further comprising at least one layer S1LG of at least one gypsum board, any one of the gypsum boards of the layer S1LG comprising 1% to 5% by weight of polyvinyl acetate based on its solids content relative to the weight of the gypsum, the second side of the wall comprising at least one layer S2LF of at least one gypsum fiberboard, the at least one layer S2LF having a thickness of at least 25 mm, a cavity being present between the first side and the second side, the cavity having a thickness of at least 40 mm and filled with air or a thermal insulating material.

Description

Technical Field

[0001] The present invention relates to a wall assembly having resistance to projectile bodies. In particular, the wall assembly is designed to withstand perforation by ammunitions FB4 - FB7 classified according to EN 1522:1998. This assembly is useful for partitions and outer walls.

Background Art

[0002] Projectile - resistant structures are made of many materials. For example, a 24 - cm - thick brick wall is projectile - resistant. However, brick walls have many drawbacks compared to dry - wall structures. As used herein, the term dry - lining or dry - wall structure or dry - lining or dry - wall construction refers to any structure or building construction having a sub - structure of a lower frame and building panels or boards assembled thereto. Dry - lining walls have the advantages of being built faster and being lighter than brick walls. In particular, non - load - bearing walls can be built as dry - lining structures. Load - bearing walls typically require special framing members. A typical dry - lining structure includes wood or metal framing with building boards such as plasterboard, gypsum fiberboard, oriented strand board, etc. attached to two opposing sides of the framing members.

[0003] Handgun projectile - resistant dry - lining (dry - wall) structures are known in the state of the art. Conventional handgun projectile - resistant wall structures include a sub - structure of dry - lining studs (metal studs). The upright studs are fixed to metal rails horizontally assembled to the floor and ceiling. The upright studs include parallel - extending flange portions having an outer surface to which boards (building panels) can be attached. Both parallel - extending flanges are connected via a web portion. The parallel - extending flanges and the base portion can be configured, for example, in a C - shape or a U - shape.

[0004] To achieve resistance to handgun or rifle bullet projectiles in partition walls, European Patent No. 1807583 and European Patent No. 3283714 disclose the construction of gypsum fiberboard inside the substructure, i.e., in the spaces between adjacent studs. This means that the gypsum fiberboard is positioned so that its edges contact the web area of ​​the metal studs, which typically corresponds to the broad face of a non-angle stud. It is not common to fasten gypsum fiberboard to the flange portion of metal studs because it is heavier than ordinary gypsum board, also known as plasterboard. In earlier structures, gypsum fiberboard was attached to the stud flanges by adhesive or screws. Screw fastening was only possible if the gypsum fiberboard was pre-drilled. Constructing gypsum fiberboard inside the substructure is an cumbersome and time-consuming process because it is extremely difficult to precisely position the heavy board between the studs.

[0005] In addition, known dry-lining structures that are resistant to rifle bullets typically rely on metal sheets configured between gypsum-based building boards on both sides of the substructure. Metal sheets are not only more expensive than gypsum board or gypsum fiberboard, but are also more difficult to handle and integrate into the dry-lining assembly.

[0006] The ballistic protection of a structure is evaluated according to EN 1522. Known structures provide projectile resistance performance of classes FB4 and FB5 according to DIN EN 1522:1998. FB4 is the highest class of protection against pistols, and FB5 is the lowest class of protection against large-caliber rifles. FB4 (BR4) can withstand three shots from a pistol with a .44 Magnum FJ (Full Metal Jacket) / FN (Flat Nose) / SC (Soft Core), weighing 15.6 ± 0.1 g, at a range of 5.00 ± 0.5 m, a velocity of 440 ± 10 m / s, and an impact energy of 1510 J. FB5 is the first class for resistance against rifle bullets. The FB5 construction can withstand three shots from a rifle with a caliber of 5.56×45mm, weighing 4.0±0.1g, at a range of 10.00±0.5m, and a velocity of 950±10m / s.

[0007] To date, no dry-lining structure has been able to achieve FB6 or FB7. The FB6 structure can withstand three shots from a rifle with a caliber of 5.56×45mm NATO FJ (Full Metal Jacket - Copper Alloy Jacket) / PB (Pointed Bullet) / SCP (Soft Core (Lead) and Steel Penetrator), weighing 4.0±0.1g, at a range of 10.00±0.5m, and a velocity of 950±10m / s. It can also withstand three shots from a rifle with a caliber of 7.62×51mm NATO FJ (Full Metal Jacket - Full Steel Jacket, Plated) / PB (Pointed Bullet) / SCP (Soft Core (Lead)), weighing 9.5±0.1g, at a range of 10.00±0.5m, and a velocity of 830±10m / s. The FB7 construction is designed for 7.62×51mm caliber NATO FJ (Full Metal Jacket - Copper Alloy Jacket) / PB (Pointed Bullet) / Steel Hardcore (mass 3.7±0.1g, hardness 63HRC or higher), weighing 9.8±0.1g, and can withstand three shots from a rifle at a range of 10.00±0.5m and a velocity of 820±10m / s.

[0008] To make bulletproof dry-lining structures more economical, it is necessary to simplify the structure. Furthermore, there is a strong demand for dry-lining structures with improved bulletproofing compared to current technology. Rifles of various calibers play a significant role in serial killings and terrorist attacks. Therefore, improved projectile resistance for load-bearing and non-load-bearing interior and exterior walls is desirable, especially for public buildings (schools, police stations, courthouses, prisons, embassies, shops, etc.) as well as private residences, which often have high security requirements to protect individuals and / or property. [Overview of the Initiative] [Problems that the invention aims to solve]

[0009] Therefore, an object of the present invention is to provide a wall assembly that can withstand handgun and / or rifle bullets and is more economical compared to the structures mentioned in the prior art. A further object of the present invention is to provide a wall assembly that is easier to assemble than the wall assemblies mentioned in the prior art. In addition, less expensive materials are desirable. A further object of the present invention is to provide a projectile-resistant wall assembly that provides itself for decorative coatings such as plaster, primer, or wallpaper layers. Most importantly, an object of the present invention is to provide a wall assembly that has ballistic protection against rifle bullets (of a higher class and caliber than those disclosed in the prior art) and has all the advantages of a dry-lined structure. [Means for solving the problem]

[0010] This problem is solved by a wall structure having the features of claim 1. These features provide projectile resistance that can satisfy the requirements of EN 1522:1998. Preferred embodiments form the subject matter of the dependent claims.

[0011] Specifically, the problem concerns a wall assembly comprising a substructure made of framing members, to which building boards are attached to two opposing sides of the substructure to form a first side and a second side of the wall, - The first side of the wall comprises at least one layer S1LF of at least one gypsum fiberboard, and at least one layer S1LF has a total thickness of at least 25 mm. - The first side of the wall further comprises at least one layer S1LG of at least one gypsum board, and each of the gypsum boards of layer S1LG contains 1% to 5% by weight of polyvinyl acetate based on its solid content relative to the weight of the gypsum. - The second side of the wall comprises at least one layer S2LF of at least one gypsum fiberboard, and at least one layer S2LF has a total thickness of at least 25 mm. - A cavity exists between the first side and the second side, and this cavity is resolved by a wall assembly having a thickness of at least 40 mm and filled with air or insulating material.

[0012] In the context of this invention, "at least one" may mean one, two, three, four, or more than four.

[0013] Optionally, the second side may further comprise at least one layer S2LG of at least one gypsum board.

[0014] A wall typically has two main surfaces or two main sides. The wall assembly of the present invention also comprises two sides, a first side and a second side. The first side and the second side may be essentially parallel to each other.

[0015] The substructure or support frame is made of framing members. These framing members can be made of metal or wood. Vertical framing members are typically called studs, and horizontal framing members are typically called rails, tracks, or beams. Metal framing members typically have two parallel flanges connected by a web, with an angle of approximately 90° between each flange and the web. Building boards are attached to the flanges of the framing members. U-shaped studs can be used as vertical framing members, but C-shaped studs are preferred as they provide more stability. Vertical (metal) framing members are typically placed within horizontal framing members such as U-shaped tracks or rails.

[0016] Wooden framing members typically have four faces, all at right angles to each other. Building boards are attached to two opposing faces of the framing member. Typically, two adjacent faces of the framing member have different widths. Building boards are generally attached to the narrower face.

[0017] Vertical framing members (metal or wood) are often placed 450mm, 600mm, or 625mm apart. However, other distances between vertical framing members are also possible.

[0018] Gypsum fiberboard is a type of building board with a gypsum core and typically contains >70% by weight, preferably 75% to 98% by weight, of calcium sulfate dihydrate based on the weight of the board. In contrast to gypsum board, gypsum fiberboard has a higher fiber content, mainly cellulose fiber. Generally, gypsum fiberboard contains 6% to 25% by weight, preferably 8% to 16% by weight, of fiber based on the gypsum in the board. Standard production lines for gypsum board cannot handle this high fiber content, which is one reason why gypsum fiberboard is manufactured by a different process. The cellulose fiber in gypsum fiberboard is usually derived from recycled paper, which is mixed with water and added to the gypsum slurry as paper pulp. In addition to calcium sulfate dihydrate and cellulose fiber, other additives such as glass fiber, setting additives, or rheological modifiers may be included. Additives are generally added to plaster (calcium sulfate hemihydrate) and given as a weight percentage based on the weight of the plaster. In the finished board, the relative amount of additive(s) is based on the weight of gypsum (calcium sulfate dihydrate). Since calcium dihydrate contains more crystal water, its molecular weight differs by approximately 1.2 times. As a result, the relative amount of additive shifts slightly, i.e., slightly decreases, compared to the original relative amount based on the plaster. Gypsum fiberboard does not require a liner. They are generally manufactured without a liner. Typical dimensions for gypsum fiberboard are 600mm x 1200mm or 600mm x 600mm for boards with a thickness of 25mm to 30mm. Thinner gypsum fiberboard (e.g., 10mm to 15mm thick) can be sized at 1200mm x 2400mm.

[0019] Gypsum board (often also called plasterboard) is another type of building board. Gypsum board contains a gypsum core and typically contains >70% by weight, preferably 75% to 98% by weight, of calcium sulfate dihydrate, based on the weight of the board. In addition to calcium sulfate dihydrate, other additives such as glass fiber or cellulose fiber, setting additives or rheological modifiers may be included. Where fibers are present, they typically exist in up to 3% by weight, preferably up to 1.5% by weight, based on the weight of gypsum in the gypsum board. Preferably, more glass fiber than cellulose fiber is incorporated. The gypsum board of the present invention contains at least polyvinyl acetate as an additive. Similar to gypsum fiberboard, additives for gypsum board are generally added in conjunction with plaster. Their relative amounts need to be adjusted as described above, based on the gypsum present in the finished board. Like most gypsum boards, gypsum board containing polyvinyl acetate also contains liners on both the main surface or the main surface. These liners increase the overall strength of the board. These can be paper liners or woven or nonwoven mats. Most preferably, gypsum boards containing polyvinyl acetate have paper liners. The liners can have a basis weight of 160 g / m² to 250 g / m², and often one side of the liner has a higher basis weight than the other. Paper liners are advantageous because they are easy to handle, less expensive, and easier to recycle. On the other hand, if hydrophobicity or mold resistance is important, for example, woven or nonwoven mats can be selected.

[0020] As an exterior wall, the wall assembly of the present invention can accept additional cladding (with or without thermal insulation) as a facade. Alternatively, the wall assembly of the present invention can be constructed inside an existing exterior wall or facade. In addition, the wall assembly of the present invention may be used, for example, as a ceiling or floor element for a projectile-resistant box or projectile-resistant shelter.

[0021] Although not a main part of the present invention, cement board and / or cement fiber board containing polyvinyl acetate can be used instead of, or in addition to, gypsum board and / or gypsum fiber board, respectively.

[0022] In a wall assembly, various building boards are configured in layers, for example, one, two, or more layers of gypsum board and / or one, two, or more layers of gypsum fiber board. Typically, the first layer of the building board is directly attached to the substructure, and subsequent layers of the building board are attached to the layer of the building board below. However, it is also conceivable that all layers are attached to the substructure.

[0023] At least two layers S1LF and S1LG of building board are attached to one side of the substructure to form the first side of the wall, and at least one layer S2LF of building board is attached to the opposite side of the substructure to form the second side of the wall. In its minimum form, one layer can consist of only one building board. In many cases, the opposite sides (of the wall assembly), that is, the first side and the second side, are essentially parallel to each other.

[0024] According to the present invention, the layer S1LF and / or S2LF can consist of one, two, or more sub-layers of the same material. For the purpose of considering them as part of the same layer, the sub-layers, that is, the gypsum fiber boards, are in direct contact with each other without being separated by another material. For example, S1LF can consist of one sub-layer of gypsum fiber board with a thickness of 28 mm. As a further example, it can also consist of two sub-layers of gypsum fiber board with a thickness of 12.5 mm stacked on top of each other so as to have a total thickness of at least 25 mm.

[0025] The total thickness of S1LF and / or S2LF can vary in other embodiments. A maximum thickness of 80 mm for S1LF and / or S2LF is preferred for most applications. More preferably, S1LF and / or S2LF have a thickness of 25 mm to 70 mm.

[0026] Similarly, layer S1LG and / or, if present, S2LG can consist of one, two, or more sub-layers of boards of the same material. To be considered part of the same layer, the sub-layers (in this case, gypsum boards) are in direct contact with each other without being separated by different materials. The liner is considered part of the gypsum board and is thus not considered a different material. For example, S1LG and / or S2LG can each consist of two sub-layers. If each sub-layer is 9 mm thick, the total thickness of this layer is 18 mm. Other typical thicknesses of the sub-layers are 12.5 mm or 15 mm. Preferably, layer S1LG and / or, if present, S2LG has a total thickness of at least 12 mm. A maximum thickness of 60 mm for S1LG and / or S2LG is preferred for most applications. If necessary, the above layers can be up to 60 mm thick. More preferably, S1LG and / or S2LG is 12 mm to 50 mm thick.

[0027] Thus, the total thickness means the thickness of one, two, or more sub-layers of building boards of the same material in direct contact with each other, and the direct contact according to the present invention means that these layers are attached to each other by attachment means and are not separated by another material along the contact surface. The only material present along the contact surface can be attachment means or a thin layer of air that can be related to the structure. Preferably, the thin layer of air is <2 mm thick, more preferably <1 mm thick. If present, the thin layer of air is generally unintentional. Generally, the total thickness is obtained by summing the thicknesses of the sub-layers.

[0028] The cavity is located between the layer of first-side building boards and the layer of second-side building boards of the wall assembly. More specifically, it is located between the innermost layer of first-side building boards and the innermost layer of second-side building boards, with the term “innermost” referring to the building board closest to the substructure or framing member. Preferably, the cavity corresponds to the space of the adjacent framing member. Since the thickness of the cavity corresponds to the distance between the layer of first-side building boards and the layer of second-side building boards, the thickness of the cavity preferably corresponds to the width of the web of the framing member when metal framing members are used. When wooden framing members are used, it is preferable that the cavity corresponds to the width of the framing member. It is essential that the cavity is either left unfilled or filled with a low-density material. Low density means that the cavity is filled with a material with a density of up to 150 kg / m³, preferably up to 50 kg / m³, and most preferably 0.8 kg / m³ to 50 kg / m³. Aerographene has a density of 0.2 kg / m³, air has a density of 1.2 kg / m³, and insulating materials such as glass wool have a density of 30 kg / m³. Other suitable insulating materials may be, for example, glass wool, rock wool, wood wool, or polystyrene. The cavity thickness may be up to 200 mm. Preferably, the cavity thickness is 60 mm to 150 mm.

[0029] The disclosed assembly offers the following advantages: -Easy to assemble. - It is economical in that it reduces assembly time. For example, it does not require adhesive, does not require heavy fiberboard layers between studs, and does not require steel plates. - When gypsum board is used as the outermost layer, it provides a better base for a layer of plaster or decorative coating such as wallpaper compared to conventional techniques.

[0030] It should be noted that any aspect and / or feature of the present invention disclosed individually in this specification and / or claims may be implemented in common with one, two, more, or all other aspects and / or features of each embodiment of the present invention, unless there are technical reasons for such combination.

[0031] In a preferred embodiment of the present invention, the second side further comprises at least one layer S2LG of at least one gypsum board, all of the gypsum boards in layer S2LG contain 1% to 5% by weight of polyvinyl acetate based on its solid content relative to the weight of gypsum in the board. Layer S2LG has the advantage that both sides of the wall assembly can achieve the same protection against projectiles. S2LG also provides a better base for a decorative coat such as a layer of plaster or wallpaper.

[0032] Advantageously, any, some, or all of the gypsum boards of layers S1LG and / or S2LG further contain glass fiber, preferably 0.5% to 2% by weight of glass fiber, more preferably 0.6% to 1% by weight of glass fiber, based on the weight of gypsum in the board. The glass fiber gives the board greater overall strength.

[0033] Any, some, or all of the gypsum boards of layer S1LG and / or S2LG may further contain 0.1% to 3% by weight of starch, preferably 0.1% to 1% by weight, based on the weight of gypsum present in the board. The starch may be, for example, natural starch, modified starch, pregelatinized starch, cold water-soluble starch, migratory starch, or non-migratory starch. Often, the starch improves the bonding of the liner to the gypsum core and / or improves the overall strength of the board.

[0034] Preferably, any, some, or all of the gypsum boards of layer S1LG and / or S2LG contain 2 to 4% by weight of polyvinyl acetate based on its solid content relative to the gypsum present in the board. The disclosed amount of polyvinyl acetate provides toughness and / or higher strength.

[0035] A gypsum board containing the disclosed amounts of polyvinyl acetate, glass fiber, and starch combination appears to be particularly advantageous.

[0036] Advantageously, some or all of the gypsum fiberboards of S1LF and / or S2LF each have two tongue-and-groove edges and two groove-and-groove edges so that adjacent gypsum fiberboards can be joined by tongue and groove joints, preferably all of the gypsum fiberboards of S1LF and / or S2LF have two adjacent tongue-and-groove edges and two adjacent groove-and-groove edges. The tongue-and-groove edges of one gypsum fiberboard can be joined to the groove-and-groove edges of another gypsum fiberboard to form a tongue and groove joint. In embodiments in which layer S1LF or layer S2LF includes at least two fiberboards, these tongue and groove joints provide greater stability to the wall assembly than standard joints or joints requiring adhesive, particularly horizontal joints in wall assemblies. The tongue and groove joints provide more flexibility in the placement of vertical framing members because building boards with tongue and groove joints do not need to be attached to the substructure along the edges of the boards. In practice, preferably, the mounting means does not attach the gypsum fiberboard to the tongue-and-groove edge near the edge, where "near" means a distance of less than 40 mm from the edge. In particular, with tongue-and-groove joints, adhesive is not required to join one layer of gypsum fiberboard to an adjacent layer.

[0037] Preferably, layer S1LF comprises at least two gypsum fiberboards, some, some, or all of the gypsum fiberboards in layer S1LF are bonded to adjacent gypsum fiberboards in the same layer without adhesive, and / or layer S2LF comprises at least two gypsum fiberboards, all of the gypsum fiberboards in layer S2LF are bonded to adjacent gypsum fiberboards in the same layer without adhesive. By omitting adhesive at the joints, the assembly steps are reduced, and therefore labor costs are reduced.

[0038] Framing members can be made of, for example, steel or wood, preferably steel, more preferably steel of at least 0.8 mm gauge, and most preferably steel of at least 1.0 mm gauge. Reinforcement framing members, in particular reinforcement studs, are made of steel of at least 0.8 mm gauge. They are typically used in load-bearing walls or unusually high non-load-bearing walls. Reinforcement framing members are required when nailing gypsum fiberboard or gypsum board to the substructure.

[0039] Preferably, each layer S1LF and / or layer S2LF has a total thickness of at least 50 mm. A total thickness of at least 50 mm improves ballistic protection to at least FB6 according to EN 1522:1998. For example, a total thickness of at least 50 mm can be achieved by using two sub-layers with a thickness of 28 mm. A non-mirrored wall assembly is most effective when the first side, i.e., the side with the thicker layer, faces impact, strike, projectile, or assault.

[0040] Preferably, each layer S1LG and / or S2LG has a total thickness of at least 24 mm. For example, a total thickness of at least 24 mm can be achieved using two sub-layers with a thickness of 12.5 mm. A total thickness of at least 24 mm improves ballistic protection to at least FB5 according to EN 1522:1998. Non-mirrored wall assemblies are most effective when the first side, i.e., the side with the thicker layer, faces impact, strike, projectile, or assault.

[0041] In advantageous embodiments, one, two or more, or all of the following preferred aspects of the present invention may be realized. Such embodiments may also realize one or more features disclosed elsewhere in this application.

[0042] Preferably, each layer S1LF and / or layer S2LF has a total thickness of at least 50 mm, and layer S1LG has a total thickness of at least 24 mm. A total thickness of at least 24 mm of gypsum board can improve ballistic protection beyond FB6 according to EN 1522:1998.

[0043] Preferably, layers S1LF and S1LG are in direct contact with each other. This means that mounting means or other materials other than air do not separate layers S1LF and S1LG.

[0044] Preferably, the first side of the wall and the second side of the wall are mirror symmetric. For example, if layer S1LF is directly attached to the substructure, then layer S2LF is directly attached to the substructure. If layer S1LF contains two sublayers, then layer S2LF contains two sublayers. Also, in order to achieve the specified symmetry, there must be at least one layer S2LG of at least one gypsum board, wherein all of the gypsum boards in layer S2LG contain 1% to 5% by weight of polyvinyl acetate based on its solid content relative to the weight of the gypsum. If S1LG is the outermost layer, then layer S2LG is the outermost layer. In relation to the present invention, “outermost” refers to the layer of building board, either gypsum board or gypsum fiberboard, that is furthest from the substructure and / or faces the interior of the room. Generally, this is the layer of building board on either the gypsum board or gypsum fiberboard side that was last installed. Also, S1LF and S2LF have the same thickness and / or composition. The same applies to S1LG and S2LG. If the second layer of gypsum fiberboard S1LF2 is on the first side, then the second layer of gypsum fiberboard S2LF2 is on the second side. If the second layer of gypsum board S1LG2 is on the first side, then the second layer of gypsum board S2LG2 is on the second side. A mirror-symmetric wall assembly has the advantage of having the same projectile resistance on both sides of the wall assembly.

[0045] Preferably, some, some, or all of the gypsum fiberboards, and all of the gypsum boards, are attached to the substructure or the underlying building board (gypsum fiberboard or gypsum board) by mounting means. The mounting means may be, for example, screws, staples, nails, or adhesive. On the other hand, gypsum boards are typically screwed to the substructure or the underlying building board, while gypsum fiberboards typically need to be pre-drilled for screwing. In the past, adhesives have been used to attach gypsum fiberboards to either the substructure or the underlying building board. This has the advantage of not requiring jointing material to cover the screw heads, for example. In the present invention, the preferred mounting means is nails, and more preferably, the mounting means is ballistic nails / nailing nails. Mounting via nails is quicker and equally reliable compared to screws. Ballistic nails are nails released from a nailing pistol (e.g., a pneumatic or powder-operated tool). In particular, (magazine-fed) ballistic nails are a very efficient mounting means. Most preferably, the ballistic nails are made of galvanized carbon steel and / or grooved and / or have a diamond-coated tip or ballistic tip. The ballistic tip is somewhat rounded like a bullet. Headed or headless (ballistic) nails are equally effective for attaching layers of fiberboard such as S1LF or S2LF and / or for attaching layers of gypsum board such as S2LG or S2LG. Particularly preferably, headed (ballistic) nails can be used to attach layers of fiberboard such as S1LF or S2LF, and / or headless (ballistic) nails can be used to attach layers of gypsum board such as S2LG or S2LG. The length of the nail shaft can vary from 20mm to 60mm. Typically, shorter lengths such as 25mm are used for gypsum board. Longer lengths such as 35mm to 55mm are generally used for gypsum fiberboard, thereby requiring longer nails for attachment to substructures than to other boards. The diameter of the nail shaft can vary from 1.5 mm to 3.0 mm. Typically, shorter diameters, such as 1.8 mm, are used for drywall.Larger diameters, such as 2.2mm to 2.8mm, are commonly used for gypsum fiberboard. Using headless nails reduces the amount of joint material needed to cover the nails. This is particularly advantageous for the outermost layer. Also, by not attaching all layers to the substructure, the load can be distributed and / or the joints between building boards of adjacent layers can be staggered, i.e., not overlapping. Non-overlapping means that the vertical joints of one layer do not overlap with the vertical joints of adjacent layers. However, depending on the configuration, vertical joints between building boards of one layer that intersect with horizontal joints between building boards of adjacent layers are not considered overlapping.

[0046] Preferably, the mounting means for the wall assembly does not include adhesive. In another preferred embodiment, some or all of the gypsum fiberboards of S1LF and / or S2LF are not pre-drilled.

[0047] Preferably, there are joints between one layer of building boards, and the joints do not overlap with joints in adjacent layers (e.g., below or above). One layer of building boards may be layer S1LF, layer S2LF, layer S1LG, layer S2LG, or further layers. Joints are formed between adjacent building boards of the same layer. Joints are generally considered weak points. By staggering the joints of adjacent layers, the overall strength of the wall assembly can be increased.

[0048] Preferably, the wall assemblies of the present invention in all embodiments do not include metal sheets. Omitting metal sheets saves costs and simplifies the assembly of the wall.

[0049] Preferably, both layer S1LF and layer S2LF are in direct contact with the substructure, preferably with the studs. Direct contact with the substructure means that both layer S1LF and layer S2LF are attached to the substructure by mounting means. More preferably, they are not separated by another material along the contact surface, so that the only material present along the contact surface is the mounting means or a thin layer of air, which may relate to the structure. Direct attachment of S1LF and S2LF to the substructure results in a more stable wall assembly.

[0050] Preferably, layer S1LG and / or layer S2LG are the outermost layers. The gypsum board of layer S1LG or layer S2LG not only provides technical characteristics for improved ballistic protection, but also offers a better base for a plaster layer or decorative coating such as wallpaper, compared to, for example, gypsum fiberboard. When gypsum board is used as the outermost layer, it contributes to this additional advantage.

[0051] Preferably, some, some, or all of the gypsum fiberboards in both layer S1LF and layer S2LF have a thickness of 10mm to 40mm, preferably 15mm to 35mm, most preferably 24mm to 30mm, and / or a density of more than 1200kg / m³ but less than 2000kg / m³, preferably more than 1400kg / m³ but less than 1800kg / m³, and more preferably more than 1500kg / m³ but less than 1700kg / m³. Gypsum fiberboards with dimensions of 1200mm × 600mm are particularly useful. Typically, the fibers of the gypsum fiberboard are cellulose-based and / or derived from paper pulp.

[0052] Preferably, some or all of the gypsum fiberboards contain fibers having at least one principal orientation, more preferably at least two principal orientations perpendicular to each other, and most preferably the principal orientations further include an orientation parallel to the principal surface of the gypsum fiberboard. The principal orientation is a characteristic feature of a particular manufacturing process and results in a gypsum fiberboard with higher flexural strength compared to gypsum fiberboards containing fibers without principal orientation from different manufacturing processes. During this particular type of manufacturing, the fibers of the gypsum fiberboard are aligned in the machine direction. This alignment or principal orientation affects the flexural strength and breaking load of the board. To further strengthen the boards, for example to further increase their flexural strength, the gypsum fiberboards may include at least two layers joined laterally (by pressure) such that the fibers of one layer are essentially perpendicular to the fibers of an adjacent fiberboard layer. These gypsum fiberboards are also more elastic compared to gypsum fiberboards containing fibers with a random arrangement or without a particular orientation. The fibers can have an average length of 1 mm to 5 mm, preferably 1 mm to 4 mm, and more preferably 1 mm to 3 mm. Preferably, the fibers have an average diameter of 15 μm to 50 μm. The building panel may have a fiber content of 5% to 25% by weight relative to the weight of the gypsum.

[0053] Preferably, the assembly satisfies the classification of at least FB4, preferably at least FB5, more preferably at least FB6, and most preferably at least FB7 according to EN1522:1998.

[0054] Preferably, the vertical framing members of the wall assembly of the present invention are spaced 400 to 650 mm apart. These measurements refer to on-center measurements, where the midline of the stud (i.e., the flange of a metal stud) or side (wooden stud) is, for example, 450 mm, 500 mm, 600 mm, or 625 mm away from the midline of the adjacent stud. More preferably, the framing members are spaced 445 mm to 630 mm apart.

[0055] A preferred framing member is a reinforcing framing member. The reinforcing framing member preferably has a steel gauge of 1.0 mm to 1.5 mm. Its web can have a width of 45 mm, 70 mm, 95 mm, 120 mm, 145 mm, or 160 mm. A width of 60 mm to 80 mm is particularly preferred. Its two flanges can have different widths, for example, 42 mm on one side and 46 mm on the other.

[0056] In all embodiments, the wall assembly of the present invention may be a partition.

[0057] Another aspect of the present invention is a method for constructing a wall assembly comprising a substructure made of framing members, wherein building boards are attached to two opposing sides of the substructure to form a first side of the wall and a second side of the wall, - The step of arranging at least two framing members, - The step of attaching at least one layer S1LF of gypsum fiberboard having a total thickness of -25 mm to the first side, - A step of attaching at least one layer S1LG of gypsum board to the first side, wherein the gypsum board contains 1% to 5% by weight of polyvinyl acetate based on its solid content relative to the weight of the gypsum, - The step of attaching at least one layer S2LF of gypsum fiberboard having a total thickness of at least 25 mm to the second side, The present invention relates to a method comprising the step of providing a cavity between two opposing sides, wherein the cavity has a thickness of at least 40 mm and is filled with air or an insulating material.

[0058] Preferably, the wall assembly of the present invention is constructed in this manner.

[0059] This method can also be applied to any of the embodiments described for wall assemblies.

[0060] A further aspect of the present invention relates to the use of gypsum board in a wall assembly, wherein the gypsum board contains 1% to 5% by weight of polyvinyl acetate based on its solid content relative to the weight of gypsum in the board, in order to achieve ballistic protection of the wall assembly, and preferably the ballistic protection satisfies at least the FB6 classification according to EN1522:1998.

[0061] Preferably, the use of gypsum board results in a wall assembly of the present invention, or a wall assembly constructed by the method of the present invention.

[0062] Preferably, this use further encompasses any of the advantageous embodiments disclosed for wall assemblies.

[0063] The present invention is further illustrated by the following list of preferred embodiments (FE).

[0064] Embodiment FE1: A wall assembly comprising a substructure made of framing members, wherein building boards are attached to two opposing sides of the substructure to form a first side and a second side of the wall, - The first side of the wall comprises at least one layer S1LF of at least one gypsum fiberboard, and layer S1LF has a total thickness of at least 25 mm. - The first side of the wall further comprises at least one layer S1LG of at least one gypsum board, and all of the gypsum boards of layer S1LG contain 1 to 5% by weight of polyvinyl acetate based on its solid content relative to the weight of the gypsum. - The second side of the wall comprises at least one layer S2LF of at least one gypsum fiberboard, and at least one layer S2LF has a total thickness of at least 25 mm. - A wall assembly in which a cavity exists between a first side and a second side, the cavity having a thickness of at least 40 mm and being filled with air or insulating material.

[0065] Embodiment FE2: The wall assembly according to Embodiment FE1, wherein the second side further comprises at least one layer S2LG of at least one gypsum board, and any, some, or all of the gypsum boards of layer S2LG contain 1% to 5% by weight of polyvinyl acetate based on its solid content relative to the weight of the gypsum.

[0066] Embodiment FE3: The wall assembly according to Embodiment FE1 or FE2, wherein any, some, or all of the gypsum boards of layer S1LG and / or all of the gypsum boards of layer S2LG further contain glass fiber, preferably 0.5% to 2% by weight of glass fiber, more preferably 0.6% to 1% by weight of glass fiber relative to the weight of gypsum in the board.

[0067] Embodiment FE4: A wall assembly according to any one of Embodiments FE1, FE2, or FE3, wherein any, some, or all of the gypsum boards of layer S1LG and / or all of the gypsum boards of layer S2LG further contain 0.1% to 3% by weight of starch, preferably 0.1% to 1% by weight of starch, based on the weight of gypsum present in the boards.

[0068] Embodiment FE5: A wall assembly according to any one of Embodiments FE1, FE2, FE3, or FE4, wherein some, some, or all of the gypsum boards of layer S1LG and / or all of the gypsum boards of layer S2LG contain 2% to 4% by weight of polyvinyl acetate relative to the gypsum, based on its solid content.

[0069] Embodiment FE6: A wall assembly according to any one embodiment FE1, FE2, FE3, FE4, or FE5, wherein some, some, or all of the gypsum fiberboards in both layer S1LF and layer S2LF have two tongue-and-groove edges and two groove-and-groove edges so that adjacent gypsum fiberboards can be joined by tongue and groove joints, preferably all of the gypsum fiberboards in layer S1LF and layer S2LF have two adjacent tongue-and-groove edges and two adjacent groove-and-groove edges.

[0070] Embodiment FE7: Layer S1LF comprises at least two gypsum fiberboards, and all of the gypsum fiberboards in layer S1LF are bonded to adjacent gypsum fiberboards in the same layer without adhesive. and / or the wall assembly according to any one of embodiments FE1, FE2, FE3, FE4, FE5, or FE6, wherein layer S2LF comprises at least two gypsum fiberboards, and any of the gypsum fiberboards in layer S2LF are bonded to an adjacent gypsum fiberboard in the same layer without adhesive.

[0071] Embodiment FE8: A wall assembly according to any one of Embodiments FE1, FE2, FE3, FE4, FE5, FE6, or FE7, wherein the framing members are made of steel or wood, preferably steel, more preferably steel of at least 0.8 mm gauge, and most preferably steel of at least 1.0 mm gauge.

[0072] Embodiment FE9: A wall assembly according to any one of Embodiments FE1, FE2, FE3, FE4, FE5, FE6, FE7, or FE8, wherein layer S1LF and / or layer S2LF have a total thickness of at least 50 mm.

[0073] Embodiment FE10: A wall assembly according to any one of Embodiments FE1, FE2, FE3, FE4, FE5, FE6, FE7, FE8, or FE9, wherein layer S1LG and / or layer S2LG have a total thickness of at least 24 mm.

[0074] Embodiment FE11: A wall assembly according to either Embodiment FE9 or FE10, wherein both layer S1LF and layer S2LF have a total thickness of at least 50 mm, and layer S1LG has a total thickness of at least 24 mm.

[0075] Embodiment FE12: A wall assembly according to any one of Embodiments FE1, FE2, FE3, FE4, FE5, FE6, FE7, FE8, FE9, FE10, or FE11, wherein layer S1LF and layer S1LG are in direct contact with each other.

[0076] Embodiment FE13: A wall assembly according to any one of Embodiments FE1, FE2, FE3, FE4, FE5, FE6, FE7, FE8, FE9, FE10, FE11, or FE12, wherein the first and second sides of the wall structure are mirror symmetric.

[0077] Embodiment FE14: A wall assembly according to any one of Embodiments FE1, FE2, FE3, FE4, FE5, FE6, FE7, FE8, FE9, FE10, FE11, FE12, or FE13, wherein some, some, or all of the gypsum fiberboards and all of the gypsum boards are attached by mounting means to a substructure or a building board below, preferably the mounting means being nails, more preferably ballistic nails, most preferably the ballistic nails being made of galvanized carbon steel and / or grooved and / or having a ballistic tip.

[0078] Embodiment FE15: The wall assembly according to Embodiment FE14, wherein the mounting means does not include adhesive.

[0079] Embodiment FE16: A wall assembly according to any of Embodiments FE1, FE2, FE3, FE4, FE5, FE6, FE7, FE8, FE9, FE10, FE11, FE12, FE13, FE14, or FE15, wherein all of the gypsum fiberboards of S1LF and / or S2LF are not pre-drilled.

[0080] Embodiment FE17: A wall assembly according to any one of Embodiments FE1, FE2, FE3, FE4, FE5, FE6, FE7, FE8, FE9, FE10, FE11, FE12, FE13, FE14, FE15, or FE16, wherein there are joints between one layer of building boards, and the joints do not overlap with joints in adjacent layers.

[0081] Embodiment FE18: A wall assembly according to any one of Embodiments FE1, FE2, FE3, FE4, FE5, FE6, FE7, FE8, FE9, FE10, FE11, FE12, FE13, FE14, FE15, FE16, or FE17, wherein the wall assembly does not include a metal sheet.

[0082] Embodiment FE19: A wall assembly according to any of Embodiments FE1, FE2, FE3, FE4, FE5, FE6, FE7, FE8, FE9, FE10, FE11, FE12, FE13, FE14, FE15, FE16, FE17, or FE18, wherein both layer S1LF and layer S2LF are in direct contact with the substructure and preferably with the studs.

[0083] Embodiment FE20: A wall assembly according to any of Embodiments FE1, FE2, FE3, FE4, FE5, FE6, FE7, FE8, FE9, FE10, FE11, FE12, FE13, FE14, FE15, FE16, FE17, FE18, or FE19, wherein layer S1LG and / or layer S2LG are the outermost layers.

[0084] Embodiment FE21: A wall assembly according to any of Embodiments FE1, FE2, FE3, FE4, FE5, FE6, FE7, FE8, FE9, FE10, FE11, FE12, FE13, FE14, FE15, FE16, FE17, FE18, FE19, or FE20, wherein both gypsum fiberboard layers S1LF and S2LF have a thickness of 10mm to 40mm, preferably 15mm to 35mm, most preferably 24 to 30mm, and / or a density of more than 120kg / m3 and less than 2000kg / m3, preferably more than 1400kg / m3 and less than 1800kg / m3, and more preferably more than 1500kg / m3 and less than 1700kg / m3.

[0085] Embodiment FE22: A wall assembly according to any one of Embodiments FE1, FE2, FE3, FE4, FE5, FE6, FE7, FE8, FE9, FE10, FE11, FE12, FE13, FE14, FE15, FE16, FE17, FE18, FE19, FE20, or FE21, wherein all of the gypsum fiberboards in both layer S1LF and layer S2LF contain fibers having at least one principal orientation, preferably at least two principal orientations perpendicular to each other, and more preferably the principal orientations further include orientations parallel to the principal surface of the gypsum fiberboard.

[0086] Embodiment FE23: A wall assembly according to any one of Embodiments FE1, FE2, FE3, FE4, FE5, FE6, FE7, FE8, FE9, FE10, FE11, FE12, FE13, FE14, FE15, FE16, FE17, FE18, FE19, FE20, FE21, or FE22, wherein the assembly satisfies the classification of at least FB4, preferably at least FB5, more preferably at least FB6, and most preferably at least FB7 according to EN1522:1998.

[0087] Embodiment FE24: A method for constructing a wall assembly comprising a substructure made of framing members, wherein building boards are attached to two opposing sides of the substructure to form a first side and a second side of the wall, particularly the wall assembly described in any of Embodiments FE1, FE2, FE3, FE4, FE5, FE6, FE7, FE8, FE9, FE10, FE11, FE12, FE13, FE14, FE15, FE16, FE17, FE18, FE19, FE20, FE21, FE22, or FE23, - The step of arranging at least two framing members, - The step of attaching at least one layer S1LF of gypsum fiberboard having a total thickness of at least 25 mm to the first side, - A step of attaching at least one layer S1LG of gypsum board to the first side, wherein the gypsum board contains 1-5% by weight of polyvinyl acetate, - The step of attaching at least one layer S2LF of gypsum fiberboard having a total thickness of at least 25 mm to the second side, A method comprising the steps of: providing a cavity between two opposing sides, wherein the cavity has a thickness of at least 40 mm and is filled with air or an insulating material.

[0088] Embodiment FE25: Use of gypsum board in a wall assembly, particularly in a wall assembly described in any one of Embodiments FE1, FE2, FE3, FE4, FE5, FE6, FE7, FE8, FE9, FE10, FE11, FE12, FE13, FE14, FE15, FE16, FE17, FE18, FE19, FE20, FE21, FE22, or FE23, or in a wall assembly constructed according to Embodiment FE24, wherein the gypsum board contains 1 to 5% by weight of polyvinyl acetate based on its solid content relative to the weight of gypsum in the board, in order to achieve ballistic protection of the wall assembly, preferably the ballistic protection satisfies the classification of FB6 according to EN1522:1998.

[0089] The present invention is further illustrated in the figures. However, it is not intended to limit the scope of the invention or the general teachings by the selected embodiments shown in the figures. [Brief explanation of the drawing]

[0090] [Figure 1] A schematic diagram of a vertical cross-section of a wall assembly according to the present invention, having S1LF, S1LG, and S2LF. [Figure 2] A schematic diagram of an alternative embodiment of the wall assembly according to the present invention, having S1LF, S1LG, S2LF, and S2LG. [Figure 3] A schematic diagram of an alternative embodiment of the wall assembly according to the present invention, having S1LF, S1LG, and S2LF. [Figure 4] A schematic diagram of an alternative embodiment of the wall assembly according to the present invention, having S1LF, S1LG, S2LF, and S2LG. [Figure 5] A schematic diagram of an alternative embodiment of the wall assembly according to the present invention, having S1LF, S1LG, S2LF, and S2LG. [Figure 6] A schematic diagram of an alternative embodiment of the wall assembly according to the present invention, having S1LF, S1LG, S2LF, and S2LG. [Figure 7] A schematic diagram of an alternative embodiment of the wall assembly according to the present invention, having S1LF, S1LG, S1LF2, S1LG2, S2LF, S2LG, S2LF2, and S2LG2. [Modes for carrying out the invention]

[0091] Figure 1 shows an embodiment having both S1LF and S2LF as the innermost layers, S1LF and S2LF being directly attached to vertical framing members, for example, metal or wood studs, preferably C-shaped or U-shaped metal studs. Here, a single layer of gypsum fiberboard with a thickness of 28 mm constitutes S1LF. Similarly, a single layer of gypsum fiberboard with a thickness of 28 mm constitutes S2LF. Alternatively, two sub-layers of gypsum fiberboard with a thickness of 12.5 mm in direct contact with each other can result in a total thickness of 50 mm, replacing the layer of gypsum fiberboard with a thickness of 28 mm. When layer S1LF consists of two sub-layers of gypsum fiberboard, the innermost sub-layer is preferably directly attached to the vertical framing member by mounting means. Subsequent sub-layers or layers are preferably attached to the layer or sub-layer below by mounting means. S1LG may be, for example, a single layer of gypsum board having a thickness of 12.5 mm or 15 mm. In this embodiment, S1LG is the outermost layer, and S2LF is both the outermost and innermost layer. The mounting means is shown as nails. In the figure, headless nails are used to attach the drywall. However, this embodiment is not limited to headed or headless nails. Nails can be substituted as mounting means, for example, with screws, staples, or adhesives.

[0092] Figure 2 shows a mirror-symmetric embodiment having S1LF and S2LF as the innermost layers and S1LG and S2LG as the outermost layers. Here, a single layer of 28 mm thick gypsum fiberboard constitutes S1LF. Similarly, a single layer of 28 mm thick gypsum fiberboard constitutes S2LF. S1LF and S2LF can be directly attached to a vertical framing member by mounting means. Similar to the embodiment in Figure 1, two sub-layers of 12.5 mm thick gypsum fiberboard can constitute S1LF and / or S2LF. S1LG and S2LG are attached to the lower layers S1LF and S2LF, respectively. The vertical framing member may be, for example, a metal or wood stud, preferably a C-shaped or U-shaped metal stud. The mounting means is shown as nails. In the figure, headless nails are used to attach the gypsum board. However, this embodiment is not limited to headed or headless nails. Nails can be substituted with, for example, screws, staples, or adhesives as mounting means.

[0093] Figure 3 illustrates an embodiment similar to that shown in Figure 1. Here, S1LF consists of two sublayers of gypsum fiberboard, each of which has a thickness of 25 mm or 28 mm. The innermost sublayer or layer is preferably attached by mounting means to a vertical framing member, such as a metal or wood stud, preferably a C-shaped or U-shaped metal stud. Subsequent sublayers or layers are preferably attached by mounting means to the layer below. The mounting means are shown as nails. In the figure, headless nails are used to attach the gypsum board. However, this embodiment is not limited to headed or headless nails. Nails can be substituted as mounting means, for example, screws, staples, or adhesives.

[0094] Figure 4 shows an asymmetrical wall assembly having S1LF and S1LG on the first side and S2LF and S2LG on the second side. S1LF consists of two sublayers of gypsum fiberboard, while S2LF consists of only one layer of gypsum fiberboard. The gypsum fiberboard in these layers or sublayers can have a thickness of, for example, 25 mm or 28 mm. The innermost sublayer or layer is preferably attached by mounting means directly to vertical framing members, such as metal or wood studs, preferably C-shaped or U-shaped metal studs. Subsequent sublayers or layers are preferably attached by mounting means to the layer below. The mounting means are shown as nails. In the figure, headless nails are used to attach the gypsum board. However, this embodiment is not limited to headed or headless nails. Nails can be substituted as mounting means, for example, screws, staples, or adhesives.

[0095] Figure 5 shows a mirror-symmetric wall assembly having S1LF and S1LG on the first side and S2LF and S2LG on the second side. S1LF and S2LF have the same thickness. Similarly, S1LG and S2LG have the same thickness. Both S1LF and S2LF consist of two sublayers of gypsum fiberboard. The gypsum fiberboard in these sublayers can have a thickness of, for example, 25 mm or 28 mm. The innermost sublayer or layer is preferably attached by mounting means directly to vertical framing members, such as metal or wood studs, preferably C-shaped or U-shaped metal studs. Subsequent sublayers or layers are preferably attached by mounting means to the layer below. The mounting means are shown as nails. In the figure, headless nails are used to attach the gypsum board. However, this embodiment is not limited to headed or headless nails. Nails can be substituted as mounting means, for example, screws, staples, or adhesives.

[0096] Figure 6 shows an embodiment similar to the embodiment in Figure 1. Here, both S1LF and S2LF consist of two sublayers of gypsum fiberboard. The gypsum fiberboard in these sublayers can have a thickness of, for example, 25 mm or 28 mm. S1LG and S2LG also consist of two sublayers. The sublayers of S1LG and S2LG can have a thickness of, for example, 12.5 mm or 15 mm. The innermost sublayer or layer is preferably attached by mounting means directly to a vertical framing member, for example, a metal or wood stud, preferably a C-shaped or U-shaped metal stud. Subsequent sublayers or layers are preferably attached by mounting means to the layer below. The mounting means are shown as nails. In the figure, headless nails are used to attach the gypsum board. However, this embodiment is not limited to headed or headless nails. Nails can be substituted as mounting means, for example, screws, staples, or adhesives.

[0097] Figure 7 shows an embodiment having S1LF, S1LG, S1LF2, S1LG2, S2LF, S2LG, S2LF2, and S2LG2. S1LF, S1LF2, S2LF, and S2LF2 may have a thickness of, for example, 25 mm or 28 mm. S1LG, S1LG2, S2LG, and S2LG2 may have a thickness of, for example, 12.5 mm or 15 mm. The innermost sub-layer or layer is preferably attached by mounting means directly to a vertical framing member, for example, a metal or wood stud, preferably a C-shaped or U-shaped metal stud. Subsequent sub-layers or layers are preferably attached by mounting means to the layer below. The mounting means are shown as nails. In the figure, headless nails are used to attach the plasterboard. However, this embodiment is not limited to headed or headless nails. Nails can be substituted as mounting means, for example, screws, staples, or adhesives. [Examples]

[0098] Again, this is not intended to unnecessarily limit the present invention. Where the effect of a particular feature is demonstrated, the parameters (such as dimensions or components) actually selected for the sample are not intended to limit the present invention to each embodiment, nor are they necessary.

[0099] The gypsum fiberboard used in all examples was a gypsum fiberboard known in the art, having a gypsum content of 90% to 95% by weight, in this particular case about 93% by weight, based on the weight of the board, and a cellulose fiber content of 8% to 11% by weight, in this particular case about 10% by weight, based on the gypsum in the board. The gypsum fiberboard had a density of 1500 ± 50 kg / m3. The gypsum board in all examples was a gypsum board known in the art, having a gypsum content of 90% to 97% by weight, in this particular case about 95% by weight, based on the weight of the board, and a density of 960 ± 20 kg / m3. As is common in the art, the gypsum board had a paper liner of 200 g / m² to 180 g / m² and contained 0.4 wt% to 1.0 wt% glass fiber and 0.1 wt% to 0.4 wt% starch, in this particular case about 0.6 wt% glass fiber and about 0.2 wt% starch, all based on the gypsum in the board. In addition, the gypsum board contained 2.0 wt% to 3.5 wt% polyvinyl acetate, in this particular case 2.9 wt% polyvinyl acetate, based on its solid content relative to the weight of gypsum in the board. The reinforcing studs used were C-shaped, with a steel gauge of 1.00 mm, a web of 70 mm, one flange of 42 mm, the other flange of 46 mm, and a cavity thickness of about 70 mm. The reinforcing rail was U-shaped and had a 1.00 mm steel gauge and a 45 mm flange, but any flange between 40 mm and 65 mm, such as 52 mm or 57 mm, is preferable. In the tests, the studs were placed on the wooden frame 500 mm apart from each other. Bullets according to EN 1522:1998 were used. The boards were arranged in an alternating pattern so that the joints between boards in one layer never overlapped with the joints between boards in the next layer. All tests were conducted according to EN 1523:1998.

[0100] Example 1 The following wall assembly passed ballistic protection class FB4 testing according to EN 1522:1998. 28mm gypsum fiberboard was attached to both flanges of reinforcing studs (1mm gauge steel) via ballistic nails (galvanized carbon steel, 50mm shaft, 2.5mm-2.8mm diameter). 12.5mm gypsum board containing polyvinyl acetate was attached to the gypsum fiberboard via ballistic nails (galvanized carbon steel, 25mm shaft, 1.8mm diameter, headless). All nails were spaced 10cm apart vertically. Three 1.0m long studs were placed on reinforcing rails (1mm gauge steel) at 50cm intervals. Each rail had a length of 1.0m. Gypsum fiberboard was cut to 410mm x 1000mm and 590mm x 1000mm and joined by tongue and groove joints to form an area of ​​1.0m2. This was done on both sides of the wall assembly. The gypsum boards containing polyvinyl acetate had sizes of 590mm x 300mm, 590mm x 700mm, 410mm x 300mm, and 410mm x 700mm on one side, and 410mm x 100mm, 410mm x 900mm, 590mm x 100mm, and 590mm x 900mm on the other side. The boards were joined together to form a total area of ​​1.0m2 on each side. The dimensions of the building boards and the distances between studs and / or nails were selected to meet the test requirements. They do not reflect typical building board dimensions. The joints intersected each other but did not completely overlap.

[0101] Example 2 The following wall assembly, which includes different configurations on both sides of the wall, passed ballistic protection class FB5 tests according to EN 1522:1998 for fire fired in both directions. On one side, 28 mm gypsum fiberboard was attached to both flanges of reinforcing studs (galvanized steel, 1.0 mm gauge) via ballistic nails (galvanized carbon steel, 50 mm shaft, 2.5 mm to 2.8 mm diameter). 28 mm thick gypsum fiberboard was attached to the underlying gypsum fiberboard via ballistic nails (galvanized carbon steel, 40 mm shaft, 2.8 mm diameter). 12.5 mm thick gypsum board containing polyvinyl acetate was attached to the outermost gypsum fiberboard via ballistic nails (galvanized carbon steel, 25 mm shaft, 1.8 mm diameter, headless). On the opposite side, 28mm gypsum fiberboard was attached to the flange of reinforcing studs (steel gauge 1.0mm) via ballistic nails (galvanized carbon steel, 50mm shaft, 2.5mm-2.8mm diameter). 12.5mm gypsum board containing polyvinyl acetate was attached to the gypsum fiberboard via ballistic nails (galvanized carbon steel, 25mm shaft, 1.8mm diameter, headless). A second layer of 12.5mm gypsum board containing polyvinyl acetate was attached to the underlying layer of gypsum fiberboard containing polyvinyl acetate via ballistic nails (galvanized carbon steel, 25mm shaft, 1.8mm diameter, headless). The nails were spaced 10cm apart vertically. Three studs, each 1.0m long, were placed on the reinforcing rails (steel gauge 1mm) at 50cm intervals. Each rail had a length of 1.0m. The gypsum fiberboard was cut to the following sizes: 540mm x 1000mm, 460mm x 1000mm (first sub-layer on the first side), two boards of 500mm x 1000mm (second sub-layer on the first side), and 590mm x 1000mm and 410mm x 1000mm (second side). One sub-layer (first side) or layer (second side) board was joined by tongue and groove joints to form an area of ​​1.0m2. The joints between the fiberboards ran horizontally. Regardless of whether the boards were placed on the first side or the second side, the joints were configured so that none of them overlapped.The polyvinyl acetate gypsum boards had sizes of 300mm x 1000mm, 700mm x 1000mm, 200mm x 1000mm, and 800mm x 1000mm in each layer or sub-layer. They were joined together to form a total area of ​​1.0m². They were attached to a second sub-layer of underlying gypsum fiberboard. The joints between the gypsum boards ran vertically. The boards were configured so that no joints overlapped, regardless of whether they were positioned on the first or second side. Three shots were fired towards the first side, which had two sub-layers of 28mm thick gypsum fiberboard and one layer of 12.5mm thick gypsum board. The dimensions of the building boards and the distances between studs and / or nails were selected to meet the test requirements. They do not reflect typical building board dimensions.

[0102] Example 3 The following wall assembly passed ballistic protection class FB6 testing according to EN 1522:1998. 28mm gypsum fiberboard was attached to both flanges of reinforcing studs (1mm gauge steel) via ballistic nails (galvanized carbon steel, 50mm shaft, 2.5mm-2.8mm diameter). 28mm gypsum fiberboard was attached to the underlying gypsum fiberboard via ballistic nails (galvanized carbon steel, 40mm shaft, 2.5mm-2.8mm diameter). 12.5mm gypsum board containing polyvinyl acetate was attached to the outermost gypsum fiberboard via ballistic nails (galvanized carbon steel, 25mm shaft, 1.8mm diameter, headless). The nails were spaced 10cm apart vertically. Three 1.0m long studs were placed on reinforcing rails (1mm gauge steel) at 50cm intervals. Each rail had a length of 1.0m. The gypsum fiberboard was cut into 460mm x 1000mm and 540mm x 1000mm boards for the first sub-layer on the first side, and two 500mm x 1000mm boards for the second sub-layer on the first side. On the second side, a 410mm x 1000mm board was joined to a 590mm x 1000mm board to form the first sub-layer, and boards of the same size were joined for the second sub-layer. All fiberboards in this embodiment had horizontal tongue-and-groove joints, and none of the joints overlapped. Each sub-layer had a surface area of ​​1.0m2. The gypsum board containing polyvinyl acetate had sizes of 300mm x 1000mm and 700mm x 1000mm in one layer on either side. The boards were joined to form a total area of ​​1.0m2. All gypsum boards in this embodiment were joined vertically so that none of the joints overlapped. The joints between the fiberboards intersected but did not overlap with the joints between the gypsum boards. The dimensions of the building boards and the distances between the studs and / or nails were selected to meet the test requirements. They do not reflect typical building board dimensions.

[0103] In all three embodiments, the bullet was flattened after penetrating the first side of the wall assembly. [Explanation of Symbols]

[0104] 1 Wall Assembly 2. Vertical framing member 3. Mounting means 4 Cavities 5 S1LF (Layer of gypsum fiberboard on the first side) 6 S1LG (Layer of gypsum board on the first side) 7 S2LF (Second side gypsum fiberboard layer) 8 S2LG (Second side gypsum board layer) 9 S1LF2 (Second layer of gypsum fiberboard on the first side) 10 S1LG2 (Second layer of gypsum board on the first side) 11 S2LF2 (Second layer of gypsum fiberboard on the second side) 12 S2LG2 (Second layer of gypsum board on the second side)

Claims

1. A wall assembly (1) comprising a substructure made of framing members (2), wherein building boards are attached to two opposing sides of the substructure to form a first side and a second side of the wall, - The first side of the wall comprises at least one layer S1LF(5) of at least one gypsum fiberboard, the layer S1LF having a total thickness of at least 25 mm, - The first side of the wall further comprises at least one layer S1LG(6) of at least one gypsum board, and all of the gypsum board of layer S1LG contains 1% to 5% by weight of polyvinyl acetate based on its solid content relative to the weight of gypsum in the gypsum board. - The second side of the wall comprises at least one layer S2LF(7) of at least one gypsum fiberboard, and the at least one layer S2LF has a total thickness of at least 25 mm. - A cavity (4) exists between the first side and the second side, and the cavity has a thickness of at least 40 mm and is filled with air or an insulating material. Wall assembly (1).

2. The wall assembly (1) according to claim 1, wherein the second side further comprises at least one layer S2LG(8) of at least one gypsum board, and any, some, or all of the gypsum boards of layer S2LG(8) contain 1% to 5% by weight of polyvinyl acetate based on its solid content relative to the weight of gypsum in the gypsum board.

3. The wall assembly (1) according to claim 1, wherein any, some, or all of the gypsum boards of layer S1LG (6) further contain glass fiber in an amount of 0.5% to 2% by weight relative to the weight of gypsum in the gypsum board.

4. The wall assembly (1) according to claim 2, wherein any, some, or all of the gypsum boards of layer S1LG (6) and / or all of the gypsum boards of layer S2LG (8) further contain 0.5% to 2% by weight of glass fiber relative to the weight of gypsum in the gypsum boards.

5. The wall assembly (1) according to claim 1, wherein any, some, or all of the gypsum boards of layer S1LG (6) further contain 0.1% to 3% by weight of starch, based on the weight of gypsum present in the gypsum boards.

6. The wall assembly (1) according to claim 2, wherein any, some, or all of the gypsum boards of layer S1LG (6) and / or all of the gypsum boards of layer S2LG (8) further contain 0.1% to 3% by weight of starch, based on the weight of gypsum present in the gypsum boards.

7. The wall assembly (1) according to claim 1, wherein any, some, or all of the gypsum boards of layer S1LG (6) contain 2% to 4% by weight of polyvinyl acetate relative to the gypsum, based on its solid content.

8. The wall assembly (1) according to claim 2, wherein any, some, or all of the gypsum boards of layer S1LG (6) and / or all of the gypsum boards of layer S2LG (8) contain 2% to 4% by weight of polyvinyl acetate relative to the gypsum, based on its solid content.

9. A wall assembly (1) according to any one of claims 1 to 8, wherein any, some, or all of the gypsum fiberboards in both layers S1LF(5) and S2LF(7) have two tongue-and-groove edges and two groove-and-groove edges so that adjacent gypsum fiberboards can be joined by tongue and groove joints, and all of the gypsum fiberboards in layers S1LF(5) and S2LF(7) have two adjacent tongue-and-groove edges and two adjacent groove-and-groove edges.

10. The wall assembly (1) according to any one of claims 1 to 9, wherein the framing member (2) is made of steel or wood.

11. The wall assembly (1) according to any one of claims 1 to 10, wherein the layer S1LF(5) and / or the layer S2LF(7) has a total thickness of at least 50 mm.

12. The wall assembly (1) according to claim 1, wherein the layer S1LG (6) has a total thickness of at least 24 mm.

13. The wall assembly (1) according to claim 2, wherein the layer S1LG (6) and / or the layer S2LG (8) has a total thickness of at least 24 mm.

14. The wall assembly (1) according to claim 11, wherein both layer S1LF (5) and layer S2LF (7) have a total thickness of at least 50 mm, and layer S1LG (6) has a total thickness of at least 24 mm.

15. The wall assembly (1) according to any one of claims 1 to 14, wherein the first side and the second side of the wall are mirror symmetric.

16. The wall assembly (1) according to any one of claims 1 to 15, wherein some, some, or all of the gypsum fiberboards and all of the gypsum boards are attached to the substructure or the building board below by mounting means (3).

17. The wall assembly (1) according to claim 1, wherein the layer S1LG (6) is the outermost layer.

18. The wall assembly (1) according to claim 2, wherein the layer S1LG (6) and / or the layer S2LG (8) is the outermost layer.

19. A method for constructing a wall assembly (1), particularly the wall assembly (1) according to any one of claims 1 to 18, comprising a substructure made of framing members (2), wherein building boards are attached to two opposing sides of the substructure to form a first side of a wall and a second side of a wall, - The steps of arranging at least two framing members (2), - The step of attaching at least one layer S1LF(5) of gypsum fiberboard having a total thickness of at least 25 mm to the first side, - A step of attaching at least one layer S1LG(6) of gypsum board to the first side, wherein the gypsum board contains 1% to 5% by weight of polyvinyl acetate, - The step of attaching at least one layer S2LF(7) of gypsum fiberboard having a total thickness of at least 25 mm to the second side, - A step of providing a cavity (4) between the two opposing sides, wherein the cavity has a thickness of at least 40 mm and is filled with air or an insulating material, Methods that include...

20. Use of gypsum board in at least one layer S1LG(6) of a wall assembly (1), particularly a wall assembly (1) according to any one of claims 1 to 18, or a wall assembly (1) constructed according to claim 19, wherein any, some, or all of the gypsum boards contain 1% to 5% by weight of polyvinyl acetate based on its solid content relative to the weight of gypsum in the gypsum board, in order to achieve ballistic protection of the wall assembly.

21. The use according to claim 20, wherein the ballistic protection satisfies at least the FB6 classification according to EN1522:1998.

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