EP2414611A2

EP2414611A2 - Profile section for fire-resistant joinery made of wood

Info

Publication number: EP2414611A2
Application number: EP10728284A
Authority: EP
Inventors: Vincent Damour
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-03-31
Filing date: 2010-03-31
Publication date: 2012-02-08
Also published as: WO2010113044A3; WO2010113044A2

Abstract

The invention relates to a profile section (1) for fire-resistant joinery made of wood, including at least one reinforcement part (6) that is more fire-resistant than said wood, with a view to reinforcing the fire-resistance of said profile section, at least one accessory attached by attaching means (10) to said profile section, in particular an accessory (9) for connecting a door to a frame. Said attaching means, such as screws (10), directly rigidly connect said accessory to said reinforcement (6), such that said accessory is retained rigidly connected to the profile section (1) in the event of a fire even if a large portion of the wood of the profile section (1) is consumed. The invention also relates to a corresponding manufacturing method. The profile sections according to the invention are mainly used in fire-resistant frontages for service shafts, in fire-resistant door units, and in fire-resistant access doors.

Description

[1] FIRE-RESISTANT WOOD JOINERY PROFILES

Field of the invention

The present invention relates to fireproof wood joinery profiles.

[3] The term "wood joinery" may describe a solid wood joinery, but also and indifferently a wood carpentry reconstituted from wood fibers or cellulose fibers, or a carpentry comprising such wood in significant proportion , and other materials added to enhance one or the other characteristic of this joinery.

[4] The term carpentry may describe indifferently an interior carpentry or an exterior carpentry

[5] This type of joinery is usually made with a frame and one or more doors or opening.

[6] A dormant frame, corresponds to the fixed part, fixed to the support (wall, partition, spandrel, floor, ceiling, ...) on which the joinery is installed.

[7] A door is a filling element placed on a carpentry frame. It can in turn be opening, semi fixed or fixed, full or recessed for example with a glazed part.

[8] The dormant frame is commonly called frame for interior joinery, or dormant frame - even door also - for the exterior joinery. A frame can also be the entourage of an opening. We can then talk about frame or opening frame. In the rest of the text will be designated by frame indifferently a frame, a frame or a sash frame, whether indoor or outdoor carpentry.

[9] In all cases, a frame includes two uprights - vertical - and a top rail, delineating the area to be filled by the door. In some cases it includes in addition a low crossbar, delimiting from below the area to be filled by the door.

[10] This frame can itself be compartmentalized by adding vertical partitions, often called mullions (or pilets for a sash frame), and / or by adding horizontal partitions often called intermediate sleepers. These partitions of the frame are generally accompanied by equivalent partitions of doors or openings. Some partitions of the frame can be filled by fixed panels, for example in the upper part of the frame, where the possibility of opening is not required. We then speaks of impost.

[11] In the following will be designated by amount indifferently an amount, a mullion or pilette, and crosses indifferently a cross high, low or intermediate. The frame word then designate the part of a frame corresponding to a door or an individual opening. That is, a frame, such as the word is used hereafter, will always consist of two uprights and one or two sleepers.

[12] A wood profile is an elongated piece of wood, and the word is used here to denote indifferently an amount or a cross such as these words are defined above.

[13] The term door is generally used for a movable panel that ensures the filling of a carpentry having its lower part at ground level or a lighter. The frame to be filled in this case has only three sides, two amounts and a single cross-high, without the presence of low cross. The term "opening" is used when the frame to be filled by the panel comprises a low crossbar, floor or lighter, or an intermediate cross corresponding to the bottom of the door.

[14] The opening mode of such a door or opening can be French, by a system of opening on the amounts or pivoting with respect to a cross, or sliding or guillotine, etc.

[15] The term transom is used for a closing panel for which the possibility of opening is not required, and which is therefore fixed, for example by brackets, to the frame.

[16] In the remainder of the text we will designate by door indifferently a door or an opening as defined above, and whether it is interior or exterior joinery, that there is presence of a cross of door bottom or not, and whatever the mode of opening / closing. On the other hand by using the word door one will not cover the transoms, which will be designated by their own name of transom. State of the art

[17] Fire-resistant wood joinery posts and crosspieces are made of wood profiles with a density and / or thickness significantly greater than those of non-fire-resistant wood joinery frames.

[18] Thus, the species used conventionally have densities greater than 550 or 600 kg / m3 in fire-resistant joinery, instead of 350 to 450 Kg / m3 in non-fire-resistant ordinary joinery and the thicknesses of profiles are typically of 45 mm or 58 mm or 68 mm when the frame must withstand fire (for example the standardized test EI1-30 or EI1-60 according to standard NF-EN 1634-1), whereas they are reduced in the range 35 to 45 mm when there is no resistance constraint at traffic light. This reinforcement by the density and the thickness of the profiles increases the construction of wood fire-resistant joinery, and increases their weight in a significantly detrimental way.

[19] FRl 180 635 discloses a frame with asbestos reinforcing parts, optionally fiber cement, the fibers being glass filaments or mineral wool.

[20] This document does not address the issue of fasteners, which is a major difficulty when trying to replace wood with more fire-resistant materials.

[21] The document DE 297 21 870 describes a frame with a central coir of fire-resistant material, low mechanical strength, with two peripheral layers of materials with low fire resistance but high mechanical strength, to meet the need for a frame to both fire resistant, and can withstand heavy doors. This document highlights the difficulty encountered. The more fire resistant materials have lower mechanical strength. To allow reliable fixing, this document proposes the sufficient presence of material with low fire resistance, and the fasteners are caught in said material, the function of which is to ensure the mechanical strength. The major disadvantage of this type of solution lies in the fact that during a fire, the fire-resistant material burns up fairly quickly, eliminating any mechanical resistance for the fasteners, which tend to break up, which causes the doors, and let fire.

[22] US 2006/0048466 discloses a wooden frame, with more fire-resistant wood parts, and a hinge attachment by long penetrating screws into the adjacent wall, to allow the hinges to hold even during a period of time. traffic light. However, this solution requires a particular adaptation of the fasteners to each adjacent wall configuration. Presentation of the invention

[23] The present invention seeks to solve the aforementioned drawbacks, and proposes a firewood wood joinery profile comprising at least one reinforcement piece more resistant to fire than said wood, to enhance the fire resistance of said profile, and at least one accessory fixed by fastening means to said profile, in particular an accessory for connecting a door to a frame.

[24] The device according to the invention is particular in that said fastening means, such as screws, fasten said accessory directly to said reinforcing piece, so that said accessory is secured to the profile in case of fire even if much of the wood of the profile has burned. [25] According to a preferred embodiment of the invention, said reinforcing piece is made of a material reinforced with fibers, preferably wood fibers or cellulose. The fiber reinforcement increases the grip and hold of screws, and thus improves the holding of accessories directly to the reinforcing piece. The choice of wood fibers or cellulose is a particularly advantageous choice in view of the holding, and gives the best mechanical results of attachment of a screw.

[26] According to another preferred embodiment of the invention, said reinforcing piece is made of a cementitious material.

[27] According to another preferred embodiment of the invention, said reinforcing member is made of a silicate-based material.

[28] According to another preferred embodiment of the invention, said reinforcing piece is made of a plaster based material.

[29] According to another preferred embodiment of the invention, said reinforcing member is made of a gypsum material.

[30] According to a particularly preferred embodiment of the invention, said reinforcement piece is constituted by a structure comprising a core made of a fire-resistant material, for example based on fiber-reinforced cement, and at least one facing preferably a facing on each side, for example wood fiber or any other material. In this embodiment, the reinforcement piece can be handled more easily during the manufacture of the profile, the soul, more fragile, being protected by the facings during the handling phases.

[31] The present invention also relates to a reinforcement piece specially adapted for the profile according to the invention. It is particular in that it consists of at least one core of fire-resistant material, such as cement, silicate, gypsum or fiber plaster, and preferably comprises on at least one of the two faces of the core a facing. , for example wood fiber board, and in that fastening means, such as screws, are hooked into the core of said piece.

[32] The present invention also relates to a method of manufacturing a fire-resistant joinery profile, characterized in that it comprises the following steps:

[33] - machining of at least one groove or rabbet in a profiled piece of wood,

[34] - insertion of a reinforcement piece more resistant to fire than said wood, in said groove or rabbet, and

[35] - screwing hinges on the profile, screws penetrating to hang the reinforcing piece, and ensuring a direct attachment of said elements to said reinforcement piece

[36] The present invention also relates to a method of manufacturing a fireproof wood joinery comprising at least one profile according to the invention, said method further comprising the following steps:

[37] - machining in said wooden profile a recess in the place provided for a mobile connection, for example a hinge, and

[38] - setting up said mobile link at the bottom of the recess,

[39] so that a door fixed to said movable connection is applied as a fully overlapping surface of the frame formed from said profile

[40] The present invention also relates to the use of a profile according to the invention to make a joinery comprising a door, a frame and a connecting system of said door on said frame. Said system is particular in that it comprises a movable connection means, for example of the hinge type for surface application, and a recess in the frame having a determined depth and opening on the side of the frame where the door is applied, said movable connecting means being fixed to the bottom of said recess, said depth being determined to allow installation of the door full-covering applied to the frame.

[41] According to a preferred embodiment of the invention, said door consists essentially of a panel consisting of at least one core sandwiched between two facings based on wood fibers, said core consisting of a fiber-reinforced cementitious or silicate-based material, wherein said frame-door connection is secured to the door by fastening means, such as screws, securing said movable link directly to said door web

[42] According to another embodiment of the invention, said door is, on part of its surface, consisting of a panel comprising a core sandwiched between two facings based on wood fibers.

[43] According to another embodiment of the invention, said door is, on at least part of its surface, consisting of an anti-fire glazing.

[44] Further advantages of the invention will appear on reading the description of the exemplary embodiments and the appended drawings, in which:

[45]

Brief description of the drawings

[46] Figure 1 shows a sectional view of a frame amount of carpentry of the state of the art with a rabbet door,

[47] Fig. 2 is a sectional view of a prior art woodwork frame post with a surface door illustrating the use of a septal groove and a false tongue for the liaison between two frames, [48] Figure 3 shows a sectional view of a carpentry frame amount according to the invention with a door rabbet, [49] Figure 4 shows a sectional view of a carpentry frame amount according to the The invention with an overlay door, [50] Figures 5 to 7 each show a sectional view of a carpentry frame amount according to the invention, declined according to another embodiment with applied door. [51] Figure 8 shows a sectional view of a link detail of a door on a frame. [52] Fig. 9 is a sectional view of a frame post with a surface-mounted door of a conventional fire-resistant interior wood joinery in the state of the art. [53] Fig. 10 shows a sectional view of a frame post with a surface door of a fire resistant interior woodwork according to the invention [54] Fig. 11 shows a left side view of the post of Fig. 10

detailed description

[55] With reference to these drawings, we see in Figure 1 the amount 1, receiving a door 2 rabbet. [56] The profile of the upright 1 comprises a rabbet 3 for receiving the door 2 and a covering wing 4 for the partition cover. [57] In Figure 3 there is a similar configuration, but with an amount 1 according to the invention, comprising a reinforcing piece 6, arranged at the bottom of a groove 5. [58] It is seen that neither the interface with the door, or the interface with the external environment

(wing cover 4) are not modified by the addition of the reinforcing piece 6. [59] In Figure 2 the amount 1, receives a door 2 applied.

[60] The profile of the upright 1 comprises a partition groove 7 receiving a false tongue 8 serving as a connection with an adjacent frame. These partition groove 7 and false tongue 8 are certainly not present in the case where the frame is leaning against a wall. [61] In Figure 4 there is a configuration similar to that of Figure 2, but with an amount 1 according to the invention, comprising a reinforcing piece 6, disposed at the bottom of a groove 5. [62] here again, neither the interface with the door nor the interface with the external environment is modified by the addition of the reinforcement piece 6. The false tongue 8 can be inserted as in a conventional partition groove , to ensure the connection between two adjacent frames, including if the false tongue is itself a piece of reinforcement.

[63] Another embodiment is to replace the false assembly tongue with a reinforcing piece. Thus said reinforcing piece is half disposed in a post, and half in another amount, and contributes to both the fire resistance and the strength of the assembly.

[64] Figure 5 shows another embodiment, wherein the reinforcing piece 6 sinks inward of the section 1 by its greater length. This is useful for optimizing the fire resistance of the amount between the inside and the outside of the joinery.

[65] Figure 6 shows an embodiment in which the section 1 consists of two half profiles, surrounding the reinforcing piece 6. This allows to have said reinforcing piece 6 in the very heart of the profile 1. Moreover the piece reinforcement 6 contributes to holding between the two half uprights by a function of false tongue (see reference 8 Figure 2).

[66] Moreover, it can be seen that the reinforcement piece 6 is either very close to or at the central longitudinal axis of the upright. In this way, whether the fire comes from inside or outside the joinery, the reinforcing piece 6 will be quickly active because it is not too far from the face attacked by the fire.

[67] Figure 7 shows an embodiment close to the previous one, but the amount 1 is in one piece, and the reinforcing piece 6 is projecting relative to the inner face of the joinery. This is another way of housing the reinforcing piece 6 at the very heart of the upright 1. The fact that it is salient can be used for the identification of the direction at the time of assembly, or for any other function, in particular for assembly with other carpenters.

[68] There is shown in Figure 8 a connecting accessory 9 (invisible hinge). This accessory makes it possible to ensure the movable connection of a door 2 to the upright 1. The fastening screws 10 penetrate into the upright 1 until they reach the reinforcement piece 6 and catch on it. This arrangement has the advantage that the connecting accessories 9 are attached directly to the reinforcing member 6. Thus in case of fire they are maintained even when a significant portion of the wood of the upright 1 has burned, and can maintain the 2 doors on the frame long enough during the fire. It is the same for a transom fixed with the help of squares.

[69] We see in Figure 9 an amount 1, a door 2 and an invisible hinge 9. These hinges are said to be invisible because they are invisible from outside the joinery. They are obviously visible from the inside, or when the doors are open. The hinge consists of a fixed part, attached to the upright 1 by screws 10, and a mold part, attached to the door 2. For mounting a door on the frame, the mold part is assembled at the fixed part. Its mechanism then makes it possible to open the door, or to close it so that the door 2 is applied to the upright 1. It thus hides the amount on the width R of the covering.

[70] It can be seen in FIG. 9 that the covering R does not cover the entire thickness E of the upright 1. The appliqué is partially overlapping, there remains an apparent width A = E - R not covered by the door 2. The presence of this uncoated part is often perceived as non-aesthetic, and it is interesting to have a solution to obtain a total recovery, that is to say a visible part null.

[71] In general, to make an assembly of facades with applied doors, it is necessary to have hinges 9 for surface application, specially designed for surface mounting. These hinges 9 can be found on the market. However, they offer a cover R generally limited to 23 mm, in exceptional cases to 28 mm or 30 mm for doors thicker than 20 mm.

[72] In the embodiment shown in FIGS. 10 and 11, a total overlap applique R was obtained by virtue of the invention. In an embodiment not shown, the cover is very slightly less than the width of the upright 1, to allow the rotation of the door 2 to the opening and closing without striking an adjacent wall, or another adjacent door. Standard hinges 9 were used, provided for a cover R of 23 mm, therefore normally insufficient to cover an amount 1 of thickness E of 40 mm.

[73] To obtain this result, a flare 11 has been machined, which for aesthetic reasons may be cylindrical or frustoconical, in the thickness of the upright 1, about 15 mm deep, and opening on the side of application of the door 2. For reasons specific to the embodiment, said flare 11 is also opening on the other side of the upright 1, but this is not essential to the embodiment of the invention.

[74] This machining produces a reduction in thickness to a remaining thickness e of wood in the amount at specific positions and a limited height.

[75] However, a reduction in fire resistance is unacceptable, even in very localized areas. Indeed, during a fire testing the fire resistance of the joinery, the heat seeks the place of weaker resistance to pass. It is therefore necessary to avoid any weak point in the whole of the joinery.

[76] It is for this reason that a reinforcement piece 6 made of hard and fire-resistant material has been added according to the invention, to the right of said recess 11, and to a height significantly overhanging said recess 11.

[77] It may advantageously be provided that such a reinforcing piece 6 is put in place over the entire length of the upright 1, thus improving the holding of said reinforcing piece 6 in the upright 1, and at the same time facilitating the process Manufacturing.

[78] The hinges 9 are then screwed into the bottom of said conical machining 11 by screws 10, which are engaged both in the wood of the upright 1 and in the reinforcing piece 6. A direct fastening of the hinges 9 to the workpiece reinforcement 6 is thus obtained by said screws 10.

[79] The same type of screwing can be applied to the door 2 when the latter consists of a sandwich panel the reinforcing piece 6 consisting of a core of a fire-resistant material and siding material based of wood fibers. The hinges 9 are then secured directly to both the upright 1 and the door 2 to a fire-resistant material, which makes reliable the entire assembly in fire resistance.

[80] All the embodiments described in Figures 2 and 4 to 8 are illustrated in the case of doors 2 applied. These embodiments can also be adapted to the case of doors 2 laid rabbet. For example, the partition groove 7 for the surface application is replaced by the covering flange 4 for the rebated installation, in which a reinforcement part 6 can be housed for half, while the other half is housed under corresponding overlapping wing 4 of an adjacent frame.

[81] The reinforcing part 6 of the frame has for example a thickness of 12 mm, and a width of 40 mm and it is preferably arranged over the entire length of the upright 1.

[82] The reinforcing part 6 of the frame may consist of a material based on cement, silicate, plaster or gypsum. Said material will preferably be reinforced with fibers, for example wood fibers or cellulose.

[83] The reinforcing piece 6 may also consist of a sandwich structure, comprising a core of a material as described in the previous paragraph, surrounded by two facings, or with a siding on one side. These facings may be wood fiber panels or any other material including protecting the soul in the handling phases of the room. It is important that said reinforcing piece 6 has a better fire resistance than the wood of the section 1 into which it is inserted. It is preferably a hard piece. [84] Such a reinforcing piece 6 can be inserted in any way in a wooden section 1. It can also replace a false tongue 8 in the assembly of two adjacent frames. It is extremely advantageous, however, to ensure that the connecting accessories, such as the hinges 9, are attached to the wooden section 1 in a manner that also directly fixes them to said reinforcing piece 6, in particular to its part made of material more fire resistant as the wood of the profile 1. In the case of hinges 9, it is the fixed part of the hinge which can be fixed to the frame with a direct attachment to the reinforcing piece 6. The movable part of the hinge 9 will be attached to the door 2, which may also include a reinforcing piece 6, such as a fiber cement core or other material. The movable portion of the hinge 9 is then also directly attached to the fire resistant material that the wood. Thus the reinforcing piece 6 not only has a proper role to oppose the passage of fire, but also to maintain the entire structure of the joinery during the duration of the fire, even after burning a large part of the wood from the frame 1.

[85] For a fire resistance EI 1-30 according to standard NF-EN 1634-1, the amount 1 can thus have for example a thickness of 25 mm, significantly reduced compared to 45 mm which are necessary in the absence reinforcement piece 6 according to the invention.

[86] The manufacturing process then comprises the following steps:

[87] - machining of at least one groove 5 or rebate 3 in a wooden section 1,

[88] - insertion of a reinforcement piece 6 more resistant to fire than said wood, in said groove 5 or rabbet 3.

[89] - Manufacturing a frame 1 from said wood profiles

[90] - screwing said accessories on the profile 1, screws 10 penetrating into the profile to hang the reinforcing piece 6, which ensures a fastening of said accessories 9 to said reinforcing piece.

[91] In another embodiment, the door 2 of the joinery is made of a sandwich panel comprising a core made of a material more resistant to fire than wood. Fixing the accessories on the door is by screws 10 s' driving into said soul. The manufacturing process then comprises in addition the following steps

[92] - manufacture of a door panel 2 by gluing of three layers, a core of fire-resistant material surrounded by two facings of material made from wood fibers

[93] - screwing the movable elements of the hinges 9 on the doors 2, the screws 10 penetrating preferably enough to hook the soul, which ensures a direct attachment of said elements to the soul

[94] - assembly of the doors 2 on the frame 1 by assembly of the movable hinge elements 9 on the fixed hinge elements 9.

[95] This ensures a holding of the accessories, and thus a retention in place of the doors 2, as the reinforcing piece 6 remains solid, even when a large part of the wood of the upright 1 has consumed. Moreover, the reinforcing piece 6 is thus maintained by screwing the accessories. Such a combination of means gives an excellent behavior of a carpentry subjected to a fire. Although much of the wood has been consumed, the structure remains intact, and continues to contain the fire.

[96] Depending on the grooves 7, rabbets 3, or cover flanges 4 or other machining that must be performed for other requirements, the position of said reinforcing member 6 will be chosen so as to provide wood thicknesses compatible with the requirements of mechanical strength and the need for fixing hinges 9, strikes, or other.

[97] The joinery according to the invention is mainly used in fire-resistant technical sheath facades, fire-resistant door blocks and fire-resistant inspection hatches.

[98] Although the invention has been described in connection with particular structures, it is by no means limited and many variations can be made.

[99] The combinations of the different embodiments shown in the drawings or described above do not depart from the scope of the invention.

[100] The following reference numbers are used in this application and in the accompanying drawings:

[101] 1. timber profile (eg upright or crossbeam)

2. door or opening

3. frame rebate

4. recovery wing

5. groove for reinforcement piece

6. reinforcement piece

7. partition groove

8. false tongue

9. hinge

10. fixing screws

11. tapered recess [102] E: thickness of the amount

[103] L: width of the amount

[104] R: recovery

[105] A: apparent width of the amount A = E - R

[105] e: remaining thickness after machining the recess 5

[107] The reference signs inserted after the technical features mentioned in the claims are only intended to facilitate the understanding of the latter and in no way limit its scope.

Claims

[1] Claims

1. Fire-resistant wood joinery profile (1), comprising at least one reinforcement piece (6) more resistant to fire than said wood, in order to reinforce the fire resistance of said profile, at least one accessory fixed by fastening means (10) to said profile, in particular a connecting accessory (9) for a door on a frame, characterized in that said fixing means, such as screws (10), fasten said accessory directly to said piece reinforcement (6), so that said accessory is secured to the profile (1) in case of fire even if a large part of the wood of the profile (1) has burned.

2. Profile (1) according to one of the preceding claims, wherein said reinforcing member (6) is made of a fiber reinforced material,

3. Profile (1) according to one of the preceding claims, wherein said fibers are wood or cellulose fibers.

4. Profile (1) according to one of the preceding claims, wherein said reinforcing member (6) is made of a material based on cement, silicate, plaster, or gypsum.

5. Profile (1) according to one of the preceding claims, wherein said reinforcing piece (6) consists of a structure comprising a core of a fire-resistant material, for example based on fiber-reinforced cement, and at least one facing, preferably a facing on each side, for example wood fiber or any other material.

6. Reinforcement piece (6) intended to improve the fire resistance of a wooden section (1), said part (6) being more resistant to fire than said wood, characterized in that it consists of at least a core of fire-resistant material, such as cement, silicate, gypsum or plaster fiber, and preferably comprising on at least one of the two faces of the core a facing, for example a wood fiber panel, and in that fixing means, such as screws (10), are hooked into the core of said piece.

7. A method of manufacturing a profile (1) of fire-resistant joinery, characterized in that it comprises the following steps:

machining at least one groove (5) or rabbet in a profiled piece of wood,

- insertion of a reinforcement piece (6) more resistant to fire than said wood, in said groove (5) or rabbet, and - screwing mold connections (9) on the profile (1), fastening means, such as screws (10) penetrating to hang the reinforcing piece (6), and ensuring a direct attachment of said mold connections to said reinforcement piece.

8. A method of manufacturing a fire resistant wood joinery comprising at least one profile manufactured according to the preceding claim, said method further comprising the following steps:

machining in said wooden section (1) a recess at the location provided for a movable connection (9), for example a hinge, and

- Establishment of said movable connection (9) at the bottom of the recess, so that a door (2) fixed to said movable connection is laid in full overlap applied to the frame formed from said profile (1).

9. Use of a profile according to one of claims 1 to 5 to make a wood firewood comprising a frame (1), a door (2) and a connecting system (9) for connecting said door (2) to said frame (1), characterized in that said system comprises a movable connection means (9), for example of hinge type for surface-mounted installation, and a recess in the frame (1) having a determined depth and being opening on the side of the frame where the door (2) is applied, said movable connecting means being fixed to the bottom of said recess, said depth being determined to allow installation of the door (2) applied to the total cover (R) of the frame (1).

10. Use of a profile according to one of claims 1 to 5 to make a wood firewood comprising a frame (1), a door (2) or a transom and a connection system (9) allowing connecting said door (2) to said frame (1), characterized in that said door (2) consists essentially of a panel consisting of at least one core sandwiched between two facings made of wood fibers, said core being made of a fiber-reinforced cementitious or silicate-based material, wherein said frame-door connection (9) is secured to the door (2) by fastening means, such as screws (10) fixing said connecting system (9) directly to said door core (2).

11. Use according to the preceding claim, wherein said door (2) is, on a portion of its surface, consisting of a panel comprising a core sandwiched between two facings based on wood fibers.

12. Use according to one of claims 9 to 11, wherein said door (2) is, on at least a portion of its surface, consisting of an anti-fire glazing.