Patent Application
20240200338
This application claims priority to EP Patent Application No. 22383222.1, filed Dec. 15, 2022, the disclosure of which is incorporated herein by reference in its entirety.
The present invention belongs to the technical field of building and construction; in particular, to the field of facade coverings. More particularly, the invention relates to, according to a first aspect thereof, a prefab panel for an off-site modular facade, as well as, according to additional aspects, a modular facade including the above-mentioned prefab panel, and a method for making the modular facade.
The construction system known as curtain walling is a building envelope intended to support only its own weight and withstand the effects of environmental forces such as wind. It is not intended to assist the structural integrity of the building. There are two main types of curtain walling construction: “stick” and “unitized”. In stick construction, the curtain wall frame is constructed mainly on site with mullions and transoms supporting glass, spandrel panels, metal panels and brise-soleils, connected piece by piece. Each mullion is usually supported by floor or perimeter beams. In unitized construction, on the other hand, the curtain wall is composed of large units that are assembled in the factory, shipped to the site and erected on the building. Metal profiles, such as aluminium profiles, steel profiles or profiles made from other suitable metals, may be used to form the frame, which is normally one-story high. Opening vents, glazing and infill panels are built into units before being transported to site. As with stick construction, each unit is usually supported by the floor or perimeter beams.
The present invention relates to a unitized-wall simplified construction, involving a lesser weight and simplified assembling works.
In particular, the present invention discloses, according to a first aspect thereof, a prefab panel for a modular facade of a building, the prefab panel comprising: a frame structure; an outer cladding layer, made of plasterboard, attached to the frame structure; and attaching means for supporting the outer cladding to the frame structure.
In the present application, the term “prefab” is to be understood as a “stand-alone solution” ready to be used, which represents a key added value in terms of easiness efficiency and cost reduction.
The frame structure comprises first and second horizontal profile(s), as well as first and second vertical profile(s). The frame structure may further comprise third vertical profile(s) and/or third horizontal profile(s).
In the prefab panel of the invention, the first and the second vertical profile have a matching shiplap design, as well as the first and second horizontal profile have a matching shiplap design. This allows any prefab panel to be joined to adjacent upper and lower prefab panels and to adjacent further right and further left prefab panels. Furthermore, brackets are mountable to the first and second vertical profiles, for supporting the prefab panels, as explained below. Preferably one bracket is used per first and second vertical profile, but the invention may alternatively involve a different number of brackets.
The brackets may either be attached to the to the first and second vertical profiles, all together making up the above-explained prefab panel, or alternatively the invention may be provided as a kit comprising: the frame structure; the plasterboard outer cladding attached to the frame structure through the attaching means; the horizontal profiles and the vertical profiles featuring shiplap design; and the brackets, as explained above, wherein the brackets are not mounted to the first and second vertical profiles, allowing installers to attach the brackets to said first horizontal and vertical profiles themselves for building the prefab panel.
A thermal insulator may be housed within the frame structure, opposite to the outer cladding.
According to additional aspects, the invention also relates to a modular facade comprising a plurality of the above-referred prefab panels assembled together, as well as a method of building the modular facade by assembling together the prefab panels.
The present invention aims to streamline facade installation, reducing the timing and auxiliary resources used in a normal facade method. Based on this point, the main concept is the installation of the facade elements from each slab of the building with the safety measures required in each case. The present invention combines the idea of a unitized curtain wall installation with a light weight facade made of plasterboard solution concept in order to improve both systems after this combination.
The main advantages of this solution are therefore:
The advantages mentioned above, as well as other advantages and features of the present invention, shall be better understood with reference to the following detailed description of a preferred embodiment of the invention, with due regard to the attached set of figures, which are to be construed in an illustrative, non-limitative manner, and wherein:
Next a detailed description of a preferred embodiment of the present invention shall be provided, with reference to
The invention relates to a unitized-wall modular facade (2) of a building (1), which is comprised by a number of prefab panels (10) assembled together, which will explained below.
Each prefab panel (10) comprises a frame structure (11), such as a studding, made of metal, such as galvanized steel. The frame structure (11) comprises a first horizontal profile (12) and a second horizontal profile (13), as well as a first vertical profile (15) and a second vertical profile (16) and, optionally, further at least one third vertical profile (17), between the first (15) and the second (16) vertical profile(s). Further optionally, there is at least one third horizontal profile (not shown) between the first (12) and the second (13) horizontal profile(s). If both third vertical profile(s) (17) and third horizontal profile(s) are present, throughgoing third vertical profile(s) (17) are preferred for statics. In a front part (18) of the frame structure (11), there is an outer cladding (19) made of a gypsum panel, also referred to as “plasterboard panel”, (such as Glasroc® X) attached to the profiles (12, 13, 15, 16, 17), by attaching means (20), such as screws, for instance, Placotherm® Integra screws. The outer cladding (19) is a facade exterior-closing element. Joint sealing elements (22), preferably self-adhesive, may be outwardly attached to at least one of the horizontal profiles (12, 13) and/or at least one of the vertical profiles (15, 16) for guaranteeing correct function of each prefab panel (10) in combination with the rest of the facade (2). In this case, the joint sealing element(s) (22) are located in the whole perimeter of the prefab panel (10) after retiring a protective peel-off sheet (not shown), for providing airtightness and watertightness to the solution. Also, it serves to attach each prefab panel (10) to adjacent prefab panels (10) in the vertical and horizontal sides during installation. The joint sealing elements (22) may preferably be made of a foam, such as Norseal®.
In the case that the outer profiles, i.e., the first (12) and second (13) horizontal profile, and the first (15) and second (16) vertical profile, overlap the cladding (19), there is one and only one first (12) and second (13) horizontal profile, and also there is one and only one first (15) and second (16) vertical profile.
A thermal insulator (not shown) made of mineral wool, for instance, is housed in the frame structure (11), behind the outer cladding (19).
The first (12) and second (13) vertical profiles, as well as the first (15) and second (16) horizontal profiles, have a matching shiplap (21) design. Preferably, the shiplap (21) design of the horizontal profiles (12, 13) is designed for clamping fit of the outer cladding (19).
The third horizontal and/or vertical (17) profile(s) may be C standard facade profiles centrally located for increasing the plasterboard resistance and improve stability of the prefab panel (10). Preferably, their profile width is selected among: 50 mm, 75 mm and 100 mm.
Brackets (31) are attachable to the vertical profiles (15, 16, 17), for connecting the prefab panel (10) to a floor slab (5) of the building (1) by means of a connecting plate (34) made of metal which is interspersed between the brackets (31) and the floor slab (5), for supporting the prefab panels (10), in particular, the frame structure (11) thereof, and the facade loads. In the figures, the brackets (31) are shown attached to the vertical profiles (15, 16, 17). In general, each prefab panel (10) includes at least one bracket (31) mounted to the first vertical profile (15), and at least one bracket (31) mounted to the second vertical profile (16). Preferably, there are two brackets (31), which are attached one to each of the first (15) and second (16) vertical profiles of each prefab panel prefab (10). The brackets (31), as seen in
a longer first portion (38), attached to a side of the first (15) or the second (16) vertical profiles, preferably by means of screws (not shown) insertable in two holes (39) of the first portion (38); and a shorter second portion (40), with a vertical slot (41), for allocating a curved upper part of the connecting plate (34), as well as fixing means (42, 43), such as a threaded bushing (42) and a fixing screw (43), for fixing the connecting plate (34) to the slot (41), and also levelling means (44, 45), such as a levelling screw (44), located at an upper flange (45) of the second portion (40), for levelling the connecting plate (34) in height.
The horizontal profiles (12, 13) are located perimetrically, at the top and at the bottom, of the frame structure (11), for closing the prefab panel (10) and protect the board from weather damage, and also for guaranteeing the stability of the prefab panel (10) connected to the vertical profiles (15, 16, 17).
The dimensions of the horizontal profiles (12, 13) and the thickness thereof, are determined based on the loads, which, in turn, depend on several factors, such as: location of the building (1); total height of the building (1); height of each floor (4) (distance between two anchor points); and location of the prefab panel (10), i.e., on a corner or at a central area, of the facade (2).
The horizontal profiles (12, 13) are fixed to the vertical profiles (15, 16, 17) at profile fixing points (36) at the ends of the vertical profiles (15, 16, 17) which, for the first (15) and second (16) vertical profiles, are preferably located on all four corners of the prefab panel (10). At the profile fixing points (36) various means for fixing the horizontal profiles (12, 13) to the vertical profiles (15, 16, 17) may be used, such as mechanical means (screws or similar) or gluing. Using screws or similar is preferable, so that the outer cladding (19) is protected by metal elements and fixed to the frame structure (11) directly in the four corners and also in the perimeter of the said outer cladding (19). In a central area of the prefab panel (10), a reinforcing profile (not shown), such as a “C” reinforcing profile, is located to increase load capability of the prefab panel (10) and to guarantee stability of the prefab panel (10). The outer cladding (19) is fixed directly to this “C” reinforcing profile.
The prefab panel (10) preferably features a width dimension equal to a typical width dimension of a gypsum cladding, such as 1200 mm, as well as a height dimension equal to the intended story height of the building (1).
The prefab panel (10) is previously assembled in a factory, and later transported to the construction site, ready to be coupled. Coupling of the prefab panels (10) is made from within the building (1), by suspending the panels (10) from the above-referred floor slab (5) of an upper story (3), and then fixing the prefab panels (10), both to each other as well as to a building structure, such as the floor slab (5), as explained below.
In particular, the pair of brackets (31) mounted to each first (15) and second (16) vertical profiles, serve to attach the prefab panel (10) to the floor slab (5). To that end, the connecting plate (34), comprising first slotted holes (37) is to be fixed to the brackets (31). The first slotted holes (37) are corresponding to second slotted holes (not shown) in the floor slab (5), preferably in corbels (not shown) attached to the floor slab (5), for absorbing assembling tolerances.
According to another aspect, the invention also relates to a method for mounting a modular facade (2) by coupling a plurality of the above-referred prefab panels (10).
The steps of the installation process are as follows:
| Number | Date | Country | Kind |
|---|---|---|---|
| 22383222.1 | Dec 2022 | EP | regional |
