Key information

Title
A ribbed concrete slab for use as a wall element, and a method of assembling a building structure comprising same
Application number
20250793
Case type
National
Status
20.07.2026 Patent meddelt (B1)
Filed
11.07.2025
Effective date
11.07.2025
Publicly available
20.07.2026
Next annual fee due
31.07.2027
Applicant
Teklas Invest AS (NO)
Owner
Teklas Invest AS (NO)
Inventor
Roar Pedersen (NO)
Agent
HÅMSØ PATENTBYRÅ AS (NO)
Granted
20.07.2026
Patent number
349991
Expiry date
11.07.2045

Abstract and drawing

Disclaimer: This text has been machine-scanned and may contain errors – please refer to "Publications" for legally binding content.
A ribbed concrete slab (1, 1’) and a method of manufacturing same, comprising: - a rectangular slab portion (3) having a first face (5) and a second face (7) opposite the first face (5), and perimeter faces (6, 6’) defining a length and a width of the slab portion (3); and at least two elongated ribs (10) protruding from the second face (7) of the rectangular slab portion (3), wherein a longitudinal axis of each rib (10) is in parallel with said second face (7), each rib (10) having an end face (12) facing away from the second face (7) of the rectangular slab portion (3), and side faces (14, 14’) extending between the second face (7) and the end face (12). The rib (10) forms part of a common perimeter plane (146) that is provided with at least one recess (20, 20’).

Publications

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Documents

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Date
 Date Doc. No. Process Case number In/Out Journal description To/from
 22.07.2026 07-01 Saksbehandling 20250793(349991) UT PT Registreringsbrev nasjonal patent (15) (PT20250793)
04.06.2026 06-01 Saksbehandling 20250793 INN Korrespondanse (Hovedbrev inn) HÅMSØ PATENTBYRÅ AS
 11.05.2026 05-01 Saksbehandling 20250793 UT Intention to grant HÅMSØ PATENTBYRÅ AS
 07.05.2026 04-05 Saksbehandling 20250793 INN P31003NO0_Norwegian translation_of claim HÅMSØ PATENTBYRÅ AS
 07.05.2026 04-04 Saksbehandling 20250793 INN P31003NO00_Response_Office_Action_May_7_2026 HÅMSØ PATENTBYRÅ AS
 07.05.2026 04-03 Saksbehandling 20250793 INN P31003NO00_MARKUP Amended Description and claims for NIPO HÅMSØ PATENTBYRÅ AS
 07.05.2026 04-02 Saksbehandling 20250793 INN P31003NO00_Amended Description and claims for NIPO HÅMSØ PATENTBYRÅ AS
 07.05.2026 04-01 Saksbehandling 20250793 INN Korrespondanse (Hovedbrev inn) HÅMSØ PATENTBYRÅ AS
 18.12.2025 03-02 Saksbehandling 20250793 UT PT report 07:42:58
18.12.2025 03-01 Saksbehandling 20250793 UT Substantive Examination HÅMSØ PATENTBYRÅ AS
 14.07.2025 02-01 Saksbehandling 20250793 UT Informasjon til oppfinner Roar Pedersen
 11.07.2025 01-04 Saksbehandling 20250793 INN P31003NO00_Description and claims for filing NIPO HÅMSØ PATENTBYRÅ AS
 11.07.2025 01-03 Saksbehandling 20250793 INN P31003NO00_ Prio Figures sheets 1-18 110725 for NIPO HÅMSØ PATENTBYRÅ AS
 11.07.2025 01-02 Saksbehandling 20250793 INN P31003NO00 Signed GPoA HÅMSØ PATENTBYRÅ AS
 11.07.2025 01-01 Saksbehandling 20250793 INN Søknadsskjema Patent HÅMSØ PATENTBYRÅ AS

Description, claims and drawings

Disclaimer: This text has been machine-scanned and may contain errors – please refer to "Publications" for legally binding content. Description
3499911A RIBBED CONCRETE SLAB USED AS A WALL ELEMENT, AND A METHOD OF ASSEMBLING ABUILDING STRUCTURE COMPRISING SAMEThe present invention is related to a construction element for use in a building structure. More specifically, the invention is related to a ribbed concrete slab used as a wall element 5 in a building structure and a method of assembling a building structure.Concrete has been used in various forms for providing a floor structure. Examples of common floor structures are in-situ made floor structures and prefabricated floor structures. Typical prefabricated floor structures are hollow core slabs, and ribbed concrete slabs. 10 A hollow core slab is made from a prestressed concrete and comprises one or more longitudinal cavities.A ribbed concrete slab is a type of reinforced concrete floor system that includes a series of parallel ribs or beams running in one or two directions, with a thinner slab (or topping) cast over them. It is designed to reduce the amount of concrete and weight while main- 15 taining structural strength.Both a hollow core slab and a ribbed concrete slab have at least two great advantages with respect to a solid slab designed for a certain load carrying capacity. A first advantage is that they represents more efficient use of materials, and thereby a reduced weight. A second advantage is that they are suitable for long spans without intermediate supports. 20 However, a well-known disadvantage of a ribbed concrete slab is related inter alia to complex formwork prior to casting, and cleaning of a casting table after producing a 3499912ribbed concrete slab to prepare for a subsequent production of a concrete slab. Thus, a ribbed concrete slab are therefore time consuming and labour intensive to manufacture. Another disadvantage of prior art ribbed concrete slabs is related to a capability of resisting shear forces between adjacent ribbed concrete slabs. 5 Similar disadvantages also applies for a hollow core slab.Publication BE898617A discloses a load-bearing, reinforced concrete floor element. At an underside, the floor element is provided with a layer of insulating material. The underside is provided with reinforcing ribs with a cross-section, e.g. dovetail-shaped, to function as anchoring key for the insulating material. 10 Publication GB2471064A discloses a floor system member provided with concrete elongate structural ribs interconnected at an upper surface thereof by an integral horizontal panel. An integral rigid insulation layer substantially fills the area under the upper surface between the ribs.Publication US3918222A discloses a prefabricated modular flooring system for a building 15 structure. The flooring system including a first set of parallel spaced elongated precast concrete beams disposed perpendicular to a second set of parallel spaced elongated precast concrete beams and cooperating to form a frame defining a bay.Publication US2215975A discloses a reinforced concrete floor slab provided with ribs. Each slab being formed with notches which form grout-receiving grooves when the slabs 20 are arranged side by side.Publication KR20100100157A discloses a floor slab comprising a panel portion, a support rib, and a shear key projected from the side of the support rib.Publications GB636486A, US4197687A and US4942707A discloses other types of floor slabs. 25 The invention has for its object to remedy or to reduce at least one of the drawbacks of the prior art, or at least provide a useful alternative to prior art. 3499913The object is achieved through features, which are specified in the description below and in the claims that follow.The invention is defined by the independent patent claims. The dependent claims define advantageous embodiments of the invention. 5 In a first aspect the invention there is provided a ribbed concrete slab configured for being used as a wall element, comprising:- a rectangular slab portion having a first face and a second face opposite the first face, and perimeter faces defining a length and a width of the slab portion;- at least two elongated ribs protruding from the second face of the rectangular slab por- 10 tion, wherein a longitudinal axis of each rib is in parallel with said second face, each rib having an end face facing away from the second face of the rectangular slab portion, and side faces extending between the second face and the end face. At least one perimeter face of the rectangular slab portion and one side face of at least one rib forms a common perimeter plane. The rib forming part of the common perimeter plane is provided with at 15 least one recess extending along the common perimeter plane and spaced apart from the first face of the rectangular slab portion. The ribbed concrete slab comprises one transverse footing rib protruding from the second face of the slab portion and arranged perpendicular to the at least two elongated ribs.The at least one recess is configured for receiving a hardenable filler to be filled into op- 20 posite recesses formed by neighbouring ribbed concrete slabs having the common perimeter plane facing each other. Calculations show that a shear capacity is considerable increases as compared to ribbed concrete slabs having plane or smooth perimeter planes. An increased shear capacity is advantageous both for a ribbed concrete slab for use as a floor comprising two or more ribbed concrete slabs, and for use as a wall comprising two 25 or more ribbed concrete slabs. The increased shear capacity has the effect that both the floor and the wall will function as a stiff sheet or plate substantially preventing individual movement between the at least two ribbed concrete slabs.In one embodiment, the at least one recess extends from a portion of at least the perimeter plane. 3499914Preferably, a space between the side portions of the elongated ribs comprises a heat insulating material. The heat insulation material may form an integrated part of the ribbed concrete slab. By the term “integrated” is meant herein that it forms part of the ribbed concrete slab in a manufacturing process. The heat insulating material is preferably suffi- 5 ciently stiff to function as a formwork for internal side faces along a length of each rib, and the second face of the rectangular slab portion. The internal side faces are the faces facing another rib. Thus, only the perimeter faces of the rectangular slab portion and any end portion(s) of the ribbed concrete slab must be defined by a temporary formwork. Preferably, the heat insulating material is made from EPS (expanded polystyrene), XPS 10 (extruded polystyrene), or PUR/PIR (polyurethane/ polyisocyanurate). XPS is preferred over EPS since XPS has a lower thermal conductivity and better moisture resistance. Further, PUR is preferred over XPS due to even lower thermal conductivity and better moisture resistance. Still further, PIR is preferred over PUR since PIR has an even lower thermal conductivity, a higher moisture resistance, and better fire resistance. Due to its 15 moisture resistance, a heat insulating material made from PIR may also provide some vapour resistance. Thus, a risk of condensing within the insulation material is considerably reduced. By providing the PIR with foil facings, the PIR will function as a vapour barrier. When the heat insulating material is used as a formwork as discussed above, there will be a tight fit between the concrete and the heat insulating material. As risk of “leakage 20 channels” between the heat insulating material and the ribs of the ribbed concrete slab is therefore negligible as compared with an insulation material arranged between the ribs after manufacturing of the ribbed concrete slab.In a preferred embodiment, a batten is arranged along each end face of the elongated ribs. The battens may be provided with fixing means extending through the battens, past 25 the end face of each rib and a body of into rib. Providing the battens with fixing means has the effect that the battens forms an integrated part of the ribbed concrete slab. The battens are preferable made from wood.As will be discussed in further detail below, the battens, like the insulation material may form part of a permanent formwork during manufacturing of the ribbed concrete slab. 3499915In one embodiment, a heat insulating material is secured between the battens and the end face of the elongated ribs. A secure connection between the battens, the insulating material, and the elongated ribs may be provided by means of solid fixing means extending through the battens and the insulating material, and past the end face of each rib and 5 into a body of into rib. The solid fixing means may typically be made from metal or any other material suitable for resisting tensile and compression forces.A heat insulating material between the battens and the end face of the ribs of the ribbed concrete slab will represent a thermal bridge breaker that reduces a heat transmission from the concrete ribs to the battens. A heat insulting material between the battens and 10 the end face of the ribs are of particular advantage when there may be a relatively great temperature difference through the ribbed concrete slab, i.e. the first face of the rectangular slab portion and a room on the opposite side thereof. Such great temperature difference may typically be present for ribbed concrete slabs forming a wall element of a building wherein the first face is exposed to ambient air or soil. 15 As disclosed above, the ribbed concrete slab according to the invention is configured for being used as a wall element.Disclosed herein is also a ribbed concrete slab configured for being a floor slab for use in building structure comprising wall elements according to the invention.Such a floor slab comprises: 20 - a rectangular slab portion having a first face and a second face opposite the first face, and perimeter faces defining a length and a width of the slab portion;- at least two elongated ribs protruding from the second face of the rectangular slab portion, wherein a longitudinal axis of each rib is in parallel with said second face, each rib having an end face facing away from the second face of the rectangular slab portion, and 25 side faces extending between the second face and the end face. At least one perimeter face of the rectangular slab portion and one side face of at least one rib forms a common perimeter plane. The rib forming part of the common perimeter plane is provided with at least one recess. At least a portion of the at least one recess may extend from the first face of the slab portion and towards the end face of the rib. Thus, after assembling two or 3499916more floor slabs, the recess, or recesses, may be filled with a hardenable filler material from the first face. After being hardened, the filler material functions as a shear node having an interlocking effect between the floor slabs and thus considerable increases a shear capacity of the assembled floor slabs. The assembled floor slabs will function as a stiff 5 sheet or plate substantially preventing individual movement between the at least two ribbed concrete slabs.The at least one recess may extend into the rib between the side faces of the rib, and from an indentation formed in a portion of the first face and the perimeter face of the rectangular slab portion. Such a recess is configured for receiving a reinforcing element 10 straddling a first ribbed concrete slab and a second ribbed concrete slab abutting against the first ribbed concrete slab. The reinforcing element is preferably a U-formed stirrup having two legs, and an intermediate portion connecting the two legs. In a position of use, one of the legs is inserted into the recess of the rib in the first ribbed concrete slabs, while the other one of the two legs is inserted into the recess of the rib in the second 15 ribbed concrete slabs abutting the first ribbed concrete slab. The indentation formed in the portion of the first face and the perimeter face of the rectangular slab portion, is configured so that the intermediate portion of the U-formed stirrup is at an elevation being lover than the first face of the rectangular slab portion. Such a U-formed stirrup will, when submerged in or by a hardenable filler material, for example concrete, further in- 20 crease the shear capacity of the assembled floor slabs.The ribbed concrete slab may further comprise at least one transverse rib protruding from the second face of the slab portion and arranged perpendicular to the at least two elongated ribs. At least one of the at least one transverse rib may have a side face forming a common perimeter plane with a perimeter face defining the width of the slab por- 25 tion. In such an embodiment, the ribbed concrete slab may have more than one common perimeter planes, such as two, three, or four common perimeter planes formed by perimeter faces of the rectangular slab portion and side faces of the ribs.According to an aspect of the invention, the ribbed concrete slab is configured for being a wall element, wherein the at least one recess extends along the common perimeter plane 3499917and spaced apart from the first face of the rectangular slab portion. The at least one recess may typically be in parallel to the longitudinal axis of the ribs. Thus, after assembling two or more wall elements, the recess, or recesses, may be filled with a hardenable filler material from a top portion of the wall element. In this context, the top portion is the 5 portion of the wall element facing upwards in a position of use. After being hardened, the filler material functions as a shear node having an interlocking effect between the wall elements and thus considerable increases a shear capacity of the assembled wall elements. The interlocking effect between adjacent wall elements will substantially prevent individual movement between the at least two ribbed concrete slabs. By preventing indi- 10 vidual movement between adjacent wall element, a risk of cracks between the hardened filler material and the wall elements is considerably reduced. Thereby, a risk of leakage through a wall made from assembled wall elements according to the invention, is considerably reduced.As discussed above, the ribbed concrete slab configured for being utilized as a wall ele- 15 ment, comprises one transverse footing rib protruding from the second face of the slab portion and arranged perpendicular to the at least two elongated ribs. Such a transverse footing rib may have a side face forming a common perimeter plane with a perimeter portion of the slab and forms a footing for abutting against a base. In an alternative embodiment, a perimeter portion of the slab may form a lip protruding beyond a lowermost 20 surface of the transverse footing rib. Such an alternative embodiment is relevant for example when the ribbed concrete slab is configured for use as a wall element as a second floor of a building. A purpose of such a lip will be discussed below in relation to figures 3e and 4b.A transverse footing rib as disclosed above has several advantages. A first advantage is 25 that vertical forces caused by the mass of the wall element itself and additional external vertical forces (such as forces from the floor slab) are transferred from both the rectangular slab portion and the elongated ribs to a base or ground via the footing rib. A contact area of the footing rib against the ground is therefore considerably increased as compared with other known wall elements made from ribbed concrete slabs and traditional 30 walls cast in situ. An increased contact area between the footing rib and the ground re 3499918duces the ground pressure. A second advantage is that a load from the floor slab may be transferred to the footing rib substantially via the ribs, and not the rectangular slab portion. Since the footing rib forms part of the wall element, a third advantage is that work required for preparing the ground for receiving the wall elements, are considerably re- 5 duced. For a wall that may be subject to horizontal forces from a backfill against the wall, a contact area between a side portion of the footing rib and a required in-situ made side support is considerably increased as compared with a wall element without the footing rib. This represents a fourth advantage.Advantageously, the wall element according to the invention may further comprise a 10 shoulder rib protruding from the second face of the slab portion, the shoulder rib being integrated with an end portion of the at least two elongated ribs and the slab portion, wherein a perimeter portion of the slab being perpendicular to the longitudinal axis of the at least two elongated ribs, protrudes beyond a shoulder face of the shoulder rib. Such a configuration is advantageous with respect to, in a position of use of the wall element, 15 supporting the floor slab as the ribs of the floor slab may be supported independently of the ribs of the wall element. further, by adapting the portion of the rectangular slab portion protruding beyond the shoulder face so that the perimeter portion of the rectangular slab and a first surface of the floor slab is at the same elevation when the floor slab is supported by the wall element, thereby representing an advantages with respect to a 20 design for inter alia universal accessibility.Preferably, the shoulder rib discussed above is provided with at least two support members protruding beyond the shoulder face. The at least two support members are mutually spaced along a length of the shoulder rib. In an embodiment wherein the floor slab is provided with a transverse rib as recited above, a distance between the at least two sup- 25 port members may be arranged independently of the longitudinal ribs of the floor slab.However, it is preferred that at least some of the at least two support members are aligned with the longitudinal ribs of the wall element to reduce shear forces between the transverse rib and the longitudinal ribs of the wall element. Reduced shear forces may allow a more slender (reduced thickness) of the transverse rib of the wall element, there- 30 by reducing the amount of concrete and/or any reinforcement. 3499919The support members may be in the form of brackets. Preferably, the brackets are made from steel. In one embodiment, such steel brackets has a T-formed cross-section to increase a shear capacity. A top portion of the brackets may be provided with an angular element having first leg being perpendicular to a longitudinal axis for the ribs of the wall 5 element, and a second leg being in parallel to the first surface of the wall element. Preferably, a surface of the second leg facing the second face of the portion of the rectangular slab portion protruding beyond the shoulder face of the shoulder rib, is spaced apart from the second leg. An insulation material may be provided in said space. The insulation material may extend along all of the second face of the rectangular slab portion protruding 10 beyond the shoulder rib. Similarly, an insulating material may also be provided between and along the shoulder face of the shoulder rib and the first leg of the angular element. The effect of said insulation materials is that, in a position of use wherein the wall element supports a floor slab, a thermal bridge between the wall element and the floor slab is at least reduced. 15 The concrete of the reinforced concrete slab according to the invention may comprise an additive selected from the group consisting of reinforcing fibres, lightweight aggregates, or a combination thereof. The reinforcing fibres may be one or more of steel fibres, glass fibres, polypropylene fibres, nylon fibres, carbon fibres, and natural fibres.The lightweight aggregates may be selected from one or more of expanded clay, shale, or 20 slate, pumice, perlite or vermiculite, foamed glass, and polystyrene beads or plastic aggregates.The advantage of the reinforcing fibres is that the mechanical properties of the concrete is improved, especially tensile strength, crack resistance and durability. Increasing the mechanical properties of the concrete may reduce an amount of reinforcement bars 25 and/or a size of the ribs of the ribbed concrete slab. Adding lightweight aggregates to a concrete mix will reduce a density of the ribbed concrete slab and has therefore a similar effect as the reinforcing fibres. In one embodiment, the ribbed concrete slab is made from a concrete comprising both reinforcing fibres and lightweight aggregates.Disclosed herein is a method of manufacturing the ribbed concrete slap for use as a wall 34999110element according to the first aspect of the invention, or for use as a floor slab, the method comprising:a) arranging a formwork against a casting table, the formwork comprising:- battens for defining an end face for the at least two ribs; 5 - a heat insulating material arranged at least between the battens to form the side faces of the ribs and the second face of the rectangular slab portion;b) securing an external formwork for defining the perimeter faces of the ribbed concrete slab to the casting table;c) pouring concrete into the formwork defined by the battens, the heat insulating materi- 10 al, and the external formwork; andd) removing the external formwork when the concrete is sufficiently hardened.An effect of such a method is that the ribbed concrete slab is manufactured with the first face of the rectangular slab portion facing away from a surface of the casting table, and wherein the battens and the heat insulation material abutting against the casting table. 15 Thus, when pouring the concrete, no concrete will be in contact with the casting table.Therefore no cleansing of the casting table is required prior to preparing for casting a subsequent ribbed concrete slab. This saves for operators and reduces wear of the casting table.The method may comprise providing reinforcement between step b) and c). Type and 20 amount of reinforcement depends from the design load of the ribbed concrete slab, and type of any additive reinforcement fibers added to the concrete mix.Step a) of the second aspect of the invention may further comprise securing a heat insulating material in alignment with the battens so that the heat insulating material defines the end face for the at least two ribs. 25 In a second aspect of the invention, there is provided a method for assembling a building structure, the method comprises:- providing a plurality of wall elements in the form of ribbed concrete slabs according to the first aspect of the invention;- arranging the wall elements in at least two mutually distant, parallel rows; 34999111- providing a plurality of ribbed concrete slabs configured for being floor slabs, each floor slab comprising:- a rectangular slab portion having a first face and a second face opposite the first face, and perimeter faces defining a length and a width of the floor slab; 5 - at least two elongated ribs protruding from the second face of the floor slab, wherein a longitudinal axis of each rib is in parallel with said second face, each rib having an end face facing away from the second face of the floor slab, and side faces extending between the second face and the end face, wherein at least one perimeter face of the floor slab and one side face of at least one rib forms a common perimeter plane, wherein 10 the rib forming part of the common perimeter plane is provided with at least one recess, wherein at least a portion of the at least one recess extends from the first face of the floor slab and towards the end face of the rib;- arranging the floor slabs onto a top portion of the wall elements; and- filling the recesses with a hardenable filler material. 15 Advantageous features of the method are disclosed in the appurtenant dependent claims.In the following is described examples of preferred embodiments illustrated in the accompanying drawings, wherein:Fig.1a shows a prior art building structure provided, wherein a sidewall is provided with supporting elements for resisting a horizontal forces from a back- 20 fill;Fig.1b illustrates in larger scale a cross-sectional vertical side view of a portion of the building in fig.1a;Fig.2a-2b illustrate a perspective view of an embodiment of a ribbed concrete slab forming part of an aspect according to the invention, wherein the ribbed 25 concrete slab is configured for use as a floor slab;Fig.2c illustrates the ribbed concrete slab in fig.2a seen in perspective from below; 34999112Fig.2d illustrates a plurality of assembled ribbed concrete slabs according to another embodiment of the invention;Fig.2e illustrates a cross-sectional view through A-A in fig.2b;Fig.2f illustrates a cross-sectional view through B-B in fig.2b; 5 Fig.3a illustrates a perspective view of an embodiment of a ribbed concrete slab according to the invention, wherein the ribbed concrete slab is configured for use as a wall element seen from an inside;Fig.3b illustrates a cross-section view through C-C in fig.3a;Fig.3c illustrates in smaller scale a perspective view of a plurality of wall elements 10 in fig.3a assembled in series;Fig.3d illustrates the wall elements in fig.3c seen from an outside;Fig.3e illustrates a cross-section view through D-D in fig.3a;Fig.3f illustrates in larger scale a cross-sectional view a detail of a top portion of the wall element; 15 Fig.3g illustrates in larger scale a cross-sectional view a detail of a bottom portion of the wall element, when being in a position of use;Fig.4a illustrates a cross-sectional view of a portion of a floor slab supported by a wall element;Fig.4b illustrates an additional first floor wall element and an additional floor slab 20 supported by the wall element shown in fig.4a;Fig.4c illustrates in larger scale a cross-sectional view a detail of top portion of a wall element supporting a floor element, wherein the wall element has been prepared for receiving the additional first floor wall element shown in fig.4b; 34999113Fig.5a illustrates a plan view seen from above of an embodiment of the floor slab;andFig.5b illustrates a cross-sectional view through E-E in fig.5a, wherein two floor slabs have been interconnected.5Any positional indications refer to the position shown in the figures.In the figures, same or corresponding elements are indicated by same reference numerals. For clarity reasons, some elements may in some of the figures be with-out reference numerals. 10 A person skilled in the art will understand that the figures are just principal drawings. The relative proportions of individual elements may also be distorted.Fig.1a illustrates a typical example of a prior art building structure B made from walls W cast in situ. The walls W carries a plurality of floor slabs F supported by the walls W. The floor slabs F may be hollow core slabs, ribbed concrete slabs, or support beams made 15 from for example wood (as illustrated). An end portion of the floor slabs F form a top portion of the walls W. In the embodiment shown, one of the sidewalls W is provided with side supports S (four shown) protruding from a supporting base SB. The side supports S are arranged mutually spaced.The floor slabs F are designed for vertical loads only, and do not resist any shear forces 20 along their side portion being in parallel to the longitudinal axis thereof. To reduce an effect of a thermal bridge through the concrete walls W, common practice is to arrange a heat insulating IM material both externally and internally of the wall W, as illustrated in fig. 1b. The internal insulation is arranged between battens (not shown) configured for providing supports for an internal cladding of the building B. Such battens are secured to 25 the wall after the concrete has hardened. A prior art wall W of this kind is time-consuming to build. The floor slabs F of the building B as illustrated in fig.1b is provided with an insulating material FI. Floor plates are arranged on top of the floor slabs F. Battens are se 34999114cured to an underside of the floor slabs F for securing a ceiling thereto. If the floor slab F is made from ribbed concrete slabs, the same applies apart from the floor plates as illustrated in fig.1b.Turning now to figures 2a et seq illustrating embodiments of the present invention. 5 Figures 2a-2f illustrate embodiments of a ribbed concrete slab configured for use as a floor slab 1 of a building, while figures 3a-3g illustrate a ribbed concrete slab configured for use as a wall element of a building.Both the ribbed concrete slab configured for use as a floor slab 1, and for use as a wall element 1’, comprises a rectangular slab portion 3 having a first face 5 and a second face 10 7 opposite the first face 5, and perimeter faces 6, 6’ defining a length and a width of the slab portion 3.The ribbed concrete slab 1, 1’ further comprises at least two elongated ribs 10 protruding from the second face 7 of the rectangular slab portion 3 wherein a longitudinal axis of each rib 10 is in parallel with said second face 7. Each rib 10 has an end face 12 facing 15 away from the second face 7 of the rectangular slab portion 3, and side faces 14, 14’ extending between the second face 7 and the end face 12. In the embodiment illustrated in figures 2e, 2f, and figure 3b, the ribbed concrete slab 1, 1’ comprises five ribs 10.In the embodiment illustrated in figures 2a and 2b, two of the four perimeter faces 6 of the rectangular slab portion 3 are aligned with side faces 14’ of two outermost, elongated 20 ribs 10, while one transvers rib 10’ having a side face 15 being perpendicular to the elongated ribs 10 and is integrated with a perimeter face 6’ of the transverse rib 10’. Thus, each of the ribs 10, 10’ being integrated with the respective perimeter face 6, 6’ of the slab portion 3 forms a common perimeter plane 146, 156’.In fig.2c, the ribbed concrete slab 1 is seen in perspective from below. 25 Fig.2d illustrates an assembly of several ribbed concrete slabs 1 configured for forming a floor of a building. It should be noted that such an assembly is commenced after wall elements 1’ are arranged to support the floor slabs 1, as illustrated in fig.4a-4c. In fig.2d all four side portions of each ribbed concrete slabs 1 comprises common perimeter planes 34999115146, wherein each perimeter plane is provided with recesses 20. The recesses 20 in the common perimeter planes 146 facing recesses 20 of an adjacent ribbed concrete slabs 1, and also grooves 21 are configured for receiving a hardenable filler material, such as concrete or another suitable material, for example an epoxy-based material, when the floor 5 slabs 1 have been assembled. A hardenable filler material in the form of concrete is preferred due to cost. The grooves 21 are a result of an inclination of the outermost ribs 10 as best seen in figures 2e and 2f. A maximum with of the grooves 21 is controlled by an angle V of inclination as illustrated to the left in fig.2e.In the embodiments illustrated in figures 3a and 3g, the ribbed concrete slab 1’ config- 10 ured for being used as a wall element, comprises three common perimeter planes 146 (footing rib 11 and side portions 14’ of the ribs 10, and the perimeter face 6 of the slab 3. As best seen in the enlarged detail illustrated in fig.3a, the perimeter planes 146 of the side portions of the ribbed concrete slab 1’ is provided with a recess 20. After assembling two or more ribbed concrete slabs 1’ as illustrated in figures 3c and 3d, the recesses 20 of 15 abutting side portions are filled with a hardenable filler material for providing a shear node having an interlocking effect between the ribbed concrete slabs 1’. Thus a shear capacity of a wall assembled from ribbed concrete slabs 1’, is considerably increased as compared to known wall elements not having such recesses.Independent of the ribbed concrete slab being configured for use as a floor slab 1, or a 20 wall element 1’, a batten 34 is arranged along each end face 12 of the elongated ribs 10.In figures 2e and 2f, the battens 34 abuts against the end faces 12 of the ribs 10. In the embodiment illustrated in fig.3b illustrating a wall element 1’, a heat insulating material 32 is arranged between the batten 34 and the end face 12 of each elongated rib 10. It should be noted that the ribbed concrete slab being 10 configured for use as a floor slab 25 1, may also be provided with such a heat insulating material.The battens 34 are secured to the ribs 10 by a rod-like, solid fixing means 35 (see fig.3b) extending through the battens 34 and the insulating material 32, and past the end face 12 of each rib 10 and into a body of into rib 10. The solid fixing means 35 has been arranged through the battens 34 and the insulating material 32 prior to pouring concrete into the 34999116formwork provided by the insulating material 30 that in one embodiment defines the ribs 10, and an external formwork as discussed above.Fig.3e illustrates a cut through a portion of the ribbed concrete slab configured for use a wall element 1’. The cut is taken through D-D in fig.3a, i.e. at a position between the ribs 5 10.At a lowermost part, the wall element 1’ is provided with a footing rib 11 protruding from the second face 7 of the slab portion 3 and is integrated with an end portion of the elongated ribs 10 (not shown in fig.3e) and the slab portion 3. The footing rib 11 is arranged perpendicular to the elongated ribs 10 of the wall element 1’. Further, an optional lip 11’ 10 is illustrated with broken lines. Such a lip 11’ is advantageous when the ribbed concrete slab 1’ is configured for use as an additional first floor wall element 1’ as illustrated in fig.4b. The lip 11’ is an extension of the slab portion 3.In a top portion of the wall element 1’, a shoulder rib 10’’ is provided. The shoulder rib 10’’ protrudes from the second face 7 of the slab portion 3 and is integrated with an end 15 portion of the at least two elongated ribs 10 and the slab portion 3. A perimeter face 6’ of the slab 3 is perpendicular to the longitudinal axis of the elongated ribs 10 and protrudes beyond a shoulder face 14’’ of the shoulder rib 10’’. The end-face 12’’ and the shoulder face 14’’ of the shoulder rib 10’’, and the second face 7 of the slab portion 3 protruding beyond the shoulder face 14’’, are provided with an insulating material 32. A batten 34 20 extends along the end face 12’’ and is secured thereto in the same manner as discussed above.The wall element 1’ illustrated in fig.3e, is configured for use as a first floor wall element as illustrated in fig.4b. A detail of a wall element 1’ for being supported by foundation F is illustrated in figures 3g and 4a. 25 Fig.3f illustrates in larger scale a cut through top portion of the ribbed concrete slab configured for use a wall element 1’. The cut is taken through one of the elongated ribs 10 and the shoulder rib 10’’. At least two mutually distant support members 40 (one shown) protrudes upwards from the shoulder rib 10’’. Further, an elongated angular element 42 34999117is secured a top portion of the support member 40. The angular element 42 is configured for inter alia providing a support for a floor slab 1 as illustrated in figures 4a-4c, while at the same time providing a fixed, predetermined mutual distance between the support members 40 when casting the wall element 1’. The support members 40 and the angular 5 element 42 is typically made from a metal. An insulating material 32 abuts against the shoulder face 14’’ and the second face 7. A thickness of the insulation material 32 is defined by a gap between the angular element 42, and the shoulder face 14’’ and the second face 7.In the embodiment shown, a horizontal leg of the angular element 42 is provided with at 10 least two apertures 43 arranged mutually spaced along a longitudinal axis of the horizontal leg. The apertures 43 have first maximal length and a second maximal length being different from the first maximal length. The purpose of the apertures 43 is to provide connection points for a hoisting device (not shown) provided with connectors mating with the apertures. By turning the connectors for example 90° after having passed the aper- 15 tures 43, a secure connection is provided. The apertures 43 are arranged at a position of the angular element 42 so that when being hoisted, the wall element 1’ is hanging substantially vertical. By means of the apertures 43, no connection points are required in the concrete of the wall element 1’. Therefore, no patching of the concrete is required after installation. Further, since the apertures 43 are arranged distant from the second face 7 20 of the slab 3, a risk of contact between for example a chain forming part of the hoisting device and the slab 3 is considerably reduced. Thereby, a risk of damaging the slab 3 during installation is also considerably reduced.The support members 40, the angular element 42 and the insulating material 32 are arranged in the formwork of the wall element 1’ prior to pouring the concrete. During pour- 25 ing of the concrete, a reusable formwork (not shown) provides a support against a free end of the insulating material 32 and the angular element 42.Turning now to fig.3g illustration in larger scale a bottom portion of the wall element 1’ in a position of use against a foundation F on a ground. The foundation F is provided with L-formed reinforcing bars 110 (one shown). A leg of the reinforcing bar 110 protrudes into 34999118a side support 112 abutting against an end face of the footing rib 11. A transverse reinforcing bar 110’ interconnects the legs of the reinforcing bars 110. Typically, but not necessarily, the side support 112 is provided by a filler material being similar to the filler material poured into the recesses 20 of the ribbed concrete slab 1, 1’. Thus, the side support 5 112 may be provided substantially in the same operation as the filler material is poured into the recesses.In fig.3g, an insulated floor IF is arranged against the ground and an inside of the wall element 1’.The wall elements 1’ according to the present invention is configured for receiving floor 10 slabs 1. However, it should be clear that the wall elements 1’ may also provide a support for other floor slabs, such as for example prior art hollow core slabs. Hollow core slabs with not achieve a stiff plate as is achieved with the floor slabs 1 according to the invention.Fig.4a illustrates a cross-sectional view of a portion of a floor slab 1 supported by a wall 15 element 1’. An outermost rib 10 of the floor slab 1 is supported by a leg of the angular element 42. A gap G is provided between the common perimeter plane 146 of the floor slab 1, the insulation 32 and a free portion of the angular element 42. The gap G is configured for receiving a hardenable filler material.Fig.4a further illustrates additional battens 34’ arranged in a transverse direction with 20 respect to the battens 34 at the ribs 10 as illustrated for example in fig.3b. An additional heat insulating material 30’ is arranged between the additional battens 34. The additional battens 34’ and the additional heat insulating material 30’ are mounted after assembling of two or more wall elements 1’. The additional heat insulting material 30’ may typically be made from stone- or mineral wool, such as for example Rockwool®, that provides an 25 excellent fire resistance. A cladding, such as for example plasterboards (not shown) will typically be secured to the additional battens 34’.Fig.4b illustrates an additional first floor wall element 1’and an additional floor slab 1 supported by the wall element 1’ shown in fig.4a. The additional floor slab 1 is identical 34999119to the floor slab shown in fig.4a. The additional wall element 1’ forming the first floor wall element 1’ is similar to the wall element 1’ shown in fig.4a, but have som additional features. One such additional feature is the lip 11’ arranged at its lowermost part. The lip 11’ is configured for facing the perimeter face 6’ of the wall element 1’ supporting the 5 first floor wall element 1’. After assembly, a gap between the lip 11’ and said perimeter face 6’, is filled with a filler material to prevent any infiltration of water. To support the first floor wall element 1’, a distance element 50 comprising an oblong rod element 52 (see fig.4c) and two mutually spaced support bodies 54 secured to the oblong rod element 52. 10 The support bodies 54 may be a made from elongated plate materials extending in parallel to the shoulder rib 10’’ of the wall elements 1’ and is secured to the oblong rod element 52, typically by a weld. As an alternative to providing support bodies 54 in the form of elongated plate materials, the support bodies 54 is in the form of disks. When being in the form of a disk, at least the uppermost support element 54 may be provided with an 15 aperture provided with threads mating with threads of the elongated rod element 52.Such a configuration allows adjustment of a distance between the disks 54 to obtain a vertical alignment of the additional wall element 1’. In still another embodiment, one of the support bodies 54 may be an elongated plate material, while the other one may be a disk. 20 Independently of the support bodies 54 being in the form of elongated plate materials, disks or a combination thereof, the portion of the rod element 52 extending below the lowermost support body 54, and a portion of the support element 54, are inserted into the filler material in the gap G provided between the common perimeter plane 146 of the floor slab 1, and the insulation 32 and a free portion of the angular element 42. Prefera- 25 bly, the insertion of said rod element 52 and the support element 54 takes place prior to hardening of the hardenable filler material.To secure a top portion of the oblong rod element 52, the footing rib 11 of the additional wall element 1’ is provided with a bore 56. The bore 56 is configured for receiving the top portion of the elongated rod element 52 and a hardenable filler material to secure said 34999120rod element 52 with respect to said footing rib 11. A conduit 58 for filling the hardenable filler material around the top portion of the rod element 52, extents from an, in a position of use, inner side of the additional wall element 1’. One end portion of the conduit 58 may for example be secured to the batten 34, while the other end is supported by the 5 bore 56 of the footing rib 11 of the additional wall element 1’.In an embodiment wherein the uppermost support element 54 is in the form of a disk, the bore 56 has a maximum opening that is less than a supporting area of the disk, so that the supporting area of the disk abuts against an area of the footing rib 11 surrounding the bore 56. Thus the additional wall element 1’ is balanced before the hardenable filler ma- 10 terial is filled into the bore 56.Fig.4c illustrates in a larger scale the distance element 50 prior to receiving the additional wall element 1’.Turning now to figures 5a and 5b, wherein fig.5a illustrates an abbreviated plan view of an embodiment of the floor slab 1 according to the invention. Fig.5b illustrates a cross- 15 sectional view of two floor slabs 1, illustrated in fig.5a, that has been interconnected. In the embodiment shown, the floor slabs 1 comprises the recesses 20 shown in for example figures 2a, and 2e-2f and discussed above. To further increase a shear capacity between the two abutting floor slabs 1, the floor slab 1 further comprises a plurality of additional recesses 20’ for receiving reinforcing stirrups 60 as illustrated in figures 5a and 5b. The 20 recesses 20’ extend into the outermost ribs 10 between their side faces 14, 14’, and from an indentation formed in a portion of the first face 5 and the perimeter face 6 of the rectangular slab portion 3.In the embodiment shown, the recesses are provided by means of cast-in sleeves 20’. Prior to pouring concrete into the formwork, the sleeves 20’ are secured to the formwork 25 via longitudinal reinforcing bars 62. Fig.5b illustrates the stirrups 60 (one shown) inserted into the sleeves 20’ in the ribs 10 between the side faces 14, 14’. A horizontal portion of the stirrup 60 extends across the groove 21 from the indentation formed in a portion of the first face 5 and the perimeter face 6 of the rectangular slab portion 3. A top portion of the stirrup 60 is at a lower elevation than the first face 5 of the slab portion 3. This to al 34999121low cover the top portion the stirrup 60 with filler material to provide a smooth top surface of the assembled floor slabs 1, and also to protect the stirrup 60 from corrosion. The recesses 20’ for receiving the stirrups 60, may be provided by drilling and cutting in situ. However, providing the recesses by means of cast-in sleeves are preferred as this will 5 increase a resistance against tear out of the legs of the stirrups 60, and reduce assembling time and dust at a construction site.In fig.5a, the floor slab 1 is at an end-portion provided with a transverse reinforcement in the form of tension stirrups 66 having legs (not shown) inserted into recesses 20’, preferably formed by sleeves similar to the sleeves discussed above. The stirrups 66 are em- 10 bedded in the floor slab 1. A purpose of the cast-in stirrups 66 is to strengthen the end portion of the floor slab 1 that is not provided with a transverse rib 10’ as provided in the opposite end portion that appears visible in fig.2b. The stirrups 60 being closest to the tension stirrups 66 are for transfer of tension loads to an adjacent floor slab.From the disclosure herein, it should be clear that the ribbed concrete slab 1, 1’ according 15 to the invention has several advantages over prior art in-situ made walls as shown in figures 1a and 1b, but also prior art ribbed concrete slabs. Firstly, when producing the ribbed concrete slab, independently of being a wall element 1’ or a floor slab 1, the concrete when poured into the formwork is not in contact with the casting table CT. Thus, time is saved in cleaning the casting table prior to preparing for casting a subsequent 20 ribbed concrete slab. Since substantially no cleaning is required, a wearing of the casting table is therefore negligible as compared with manufacturing of ribbed concrete slabs according to prior art. A second advantage is that in certain embodiment of the invention, a thermal bridge through the ribbed concrete slab 1, 1’ is broken by means of the insulation materials 30, 32. No external insulation is required. A third advantage is that in cer- 25 tain embodiments, the ribbed concrete slabs 1, 1 may be ready for assembly directly from storage without any further preparation. This considerably reduces manhours and time at a construction site. A fourth advantage is that when assembled, the wall elements 1’ and the floor slabs 1 operates as stiff plates similar to “traditional” in-situ cast wall- and slab plates. Since the ribbed concrete slab is manufactured with the first face of the rectangu 34999122lar slab portion facing away from a surface of the casting table, a matrix may be applied to provide a desired pattern in the first face of the rectangular slab portion prior to hardening of the concrete. This represents a fifth advantage, and is normally relevant for a ribbed concrete slab configured for being a wall element. 5 It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. Use of the verb "comprise" and its conjugations does not exclude the presence of elements or 10 steps other than those stated in a claim. The article "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.
Claims
34999123C l a i m s1. A ribbed concrete slab (1’) configured for being used as a wall element, the ribbed concrete slab (1’) comprising:- a rectangular slab portion (3) having a first face (5) and a second face (7) oppo-5 site the first face (5), and perimeter faces (6, 6’) defining a length and a width of the slab portion (3);- at least two elongated ribs (10) protruding from the second face (7) of the rectangular slab portion (3), wherein a longitudinal axis of each rib (10) is in parallel with said second face (7), each rib (10) having an end face (12) facing away from10 the second face (7) of the rectangular slab portion (3), and side faces (14, 14’) extending between the second face (7) and the end face (12), wherein at least one perimeter face (6) of the rectangular slab portion (3) and one side face (14’) of at least one rib (10) forms a common perimeter plane (146), wherein the rib (10) forming part of the common perimeter plane (146) is provided with at least one15 recess (20) extending along the common perimeter plane (146) and spaced apart from the first face (5) of the rectangular slab portion (3), c h a r a c t e r -i s e d i n that the ribbed concrete slab (1’) comprises one transverse footing rib (11) protruding from the second face (7) of the slab portion (3) and arranged perpendicular to the at least two elongated ribs (10).20 2. The ribbed concrete slab (1’) according to claim 1,wherein the at least one recess (20) extends from a portion of at least the perimeter plane (146).3. The ribbed concrete slab (1’) according to claim 1 or 2, wherein a space between the side portions (14) of the elongated ribs (10) comprises a heat insulating material (30).25 4. The ribbed concrete slab (1’) according any one of claims 1 - 3, wherein a batten (34) is arranged along each end face (12) of the elongated ribs (10).349991245. The ribbed concrete slab (1’) according to claim 4, wherein a heat insulating material (32) is secured between the batten (34) and the end face (12) of the elongated ribs (10).6. The ribbed concrete slab (1’) according to any one of the preceding claims,5 wherein the transverse footing rib (11) has a side face (14’) forming a common perimeter plane (146’) with a perimeter portion (6) of the slab portion (3) and forms a footing for abutting against a base (F).7. The ribbed concrete slab (1’) according to any one of the preceding claims, further comprising a shoulder rib (10’’) protruding from the second face (7) of the10 slab portion (3), the shoulder rib (10’’) being integrated with an end portion of the at least two elongated ribs (10) and the slab portion (3), wherein a perimeter portion (6’) of the slab portion (3) being perpendicular to the longitudinal axis of the at least two elongated ribs (10), protrudes beyond a shoulder face (14’’) of the shoulder rib (10’’).15 8. The ribbed concrete slab (1’) according to claim 7, wherein the shoulder rib (10’’) is provided with at least two support members (40) protruding beyond the shoulder face (14’’), the at least two support members (40) being mutually spaced along a length of the shoulder rib (10’’).9. The ribbed concrete slab (1’) according to any one of the preceding claims,20 wherein the concrete comprises an additive selected from the group consisting of: a reinforcing fibres and lightweight aggregates, or a combination thereof.10. A method for assembling a building structure, the method comprises:- providing a plurality of wall elements (1’) in the form of ribbed concrete slabs (1’) according to any one of claims 1-9;25 - arranging the wall elements (1’) in at least two mutually distant, parallel rows;- providing a plurality of ribbed concrete slabs (1) configured for being floor slabs (1), each floor slab (1) comprises:- a rectangular slab portion (3) having a first face (5) and a second face34999125(7) opposite the first face (5), and perimeter faces (6, 6’) defining a length and a width of the floor slab (1);- at least two elongated ribs (10) protruding from the second face (7) of the floor slab (1), wherein a longitudinal axis of each rib (10) is in parallel with5 said second face (7), each rib (10) having an end face (12) facing away from the second face (7) of the floor slab (1), and side faces (14, 14’) extending between the second face (7) and the end face (12), wherein at least one perimeter face (6) of the floor slab (1) and one side face (14’) of at least one rib (10) forms a common perimeter plane (146), wherein the rib (10) forming part of the common pe-10 rimeter plane (146) is provided with at least one recess (20), wherein at least a portion of the at least one recess (20) extends from the first face (5) of the floor slab (1) and towards the end face (12) of the rib (10);- arranging the floor slabs (1) onto a top portion of the wall elements (1’); and - filling the recesses (20, 20’) with a hardenable filler material.15 11. The method according to claim 10, wherein the at least one recess (20’) extends into the rib between the side faces (14, 14’) of the rib (10), and from an indentation formed in a portion of the first face (5) and the perimeter face (6) of the rectangular floor slab (1).12. The method according to claim 10 or 11 further comprising providing each floor20 slab (1) with at least one transverse rib (10’) protruding from the second face (7) of the slab portion (3) and arranged perpendicular to the at least two elongated ribs (10), at least one of the at least one transverse rib (10’) has a side face (15) forming a common perimeter plane (156) with a perimeter face (6’) defining the width of the slab portion (3).25 13. The method according to any one of claims 10 - 12, wherein the method further comprises arranging a heat insulating material in a space between the side portions of the ribs (10) of the floor slab (1).14. The method according to any one of claims 10 - 13, comprising arranging a batten (34) along each end face (12) of the elongated ribs (10) of the floor slab (1).3499912615. The method according to claim 14, comprising securing a heat insulating material (32) between the batten (34) and the end face (12) of the elongated ribs (10) of the floor slab (1).34999127P a t e n t k r a v1. Ribbeplate (1’) konfigurert til anvendelse som et veggelement, hvor ribbeplaten (1’) omfatter:- et rektangulært plateparti (3) som har en første flate (5) og en andre flate (7)5 motstående for den første flaten (5), og randflater (6, 6’) som definerer en lengde og en bredde av platepartiet (3);- minst to langstrakte ribber (10) som rager ut fra den andre flaten (7) av det rektangulære platepartiet (3), hvor en lengdeakse av hver ribbe (10) er parallell med nevnte andre flate (7), idet hver ribbe (10) har en endeflate (12) som vender bort10 fra den andre flaten (7) av det rektangulære platepartiet (3), og sideflater (14,14’) som strekker seg mellom den andre flaten (7) og endeflaten (12), hvor minst én randflate (6) av det rektangulære platepartiet (3) og én sideflate (14’) av minst én ribbe (10) tildanner et felles randplan (146), hvor ribben (10) som tildanner en del av det felles randplanet (146), er forsynt med minst én forsenkning15 (20) som strekker seg langs det felles randplanet (146) og er plassert på avstand fra den første flaten (5) av det rektangulære platepartiet (3), k a r a k t e -r i s e r t v e d at ribbeplaten omfatter én tverrgående fotribbe (11) som rager ut fra den andre flaten (7) av platepartiet (3) og er anordnet vinkelrettrett på de minst to langstrakte ribbene (10).20 2. Ribbeplate (1’) ifølge krav 1, hvor den minst ene forsenkningen (20) strekker seg fra et parti av i det minste randplanet (146).3. Ribbeplate (1’) ifølge krav 1 eller 2, hvor et rom mellom sidepartiene (14) av de langstrakte ribbene (10) omfatter et varmeisolerende materiale (30).4. Ribbeplate (1’) ifølge et hvilket som helst av kravene 1–3, hvor en lekt (34) er an-25 ordnet langs hver endeflate (12) av de langstrakte ribbene (10).5. Ribbeplate (1’) ifølge krav 4, hvor et varmeisolerende materiale (32) er festet mellom lekten (34) og endeflaten (12) av de langstrakte ribbene (10).349991286. Ribbeplate (1’) ifølge et hvilket som helst av de foregående kravene, hvor den tverrgående fotribben (11) har en sideflate (14’) som tildanner et felles randplan (146’) med et randparti (6) av platepartiet (3) og tildanner en fot for å ligge an mot et fundament (F).5 7. Ribbeplate (1’) ifølge et hvilket som helst av de foregående kravene, videre omfattende en skulderribbe (10’’) som rager ut fra den andre flaten (7) av platepartiet (3), idet skulderribben (10’’) er integrert med et endeparti av de minst to langstrakte ribbene (10) og platepartiet (3), hvor et randparti (6’) av platepartiet (3) som er vinkelrett på den langsgående aksen av de minst to langstrakte ribb-10 bene (10), rager forbi en skulderflate (14’’) av skulderribben (10’’).8. Ribbeplate (1’) ifølge krav 7, hvor skulderribben (10’’) er forsynt med minst to støtteelementer (40) som rager forbi skulderflaten (14’’), idet de minst to støtteelementene (40) er plassert med innbyrdes avstand langs en lengde av skulderribben (10’’).15 9. Ribbeplate (1’) ifølge et hvilket som helst av de foregående kravene, hvor betongen omfatter en tilsetning valgt fra gruppen bestående av: en armeringsfiber og lettvektsaggregater, eller en kombinasjon derav.10. Framgangsmåte for sammenstilling av en bygningsstruktur, hvor framgangsmåten omfatter:20 - å tilveiebringe en flerhet av veggelementer (1’) i form av ribbeplater (1’) ifølge et hvilket som helst av kravene 1–9;- å arrangere veggelementene (1’) i i det minste to parallelle rader med innbyrdes avstand;- å tilveiebringe en flerhet av ribbeplater (1) konfigurert til å være gulvplater (1),25 hvor hver gulvplate (1) omfatter:- et rektangulært plateparti (3) som har en første flate (5) og en andre flate (7) motstående for den første flaten (5), og randflater (6, 6’) som definerer en lengde og en bredde av gulvplaten (1);- i det minste to langstrakte ribber (10) som rager ut fra den andre flaten34999129(7) av gulvplaten (1), hvor en lengdeakse av hver ribbe (10) er parallell med nevnte andre flate (7), idet hver ribbe (10) har en endeflate (12) som vender bort fra den andre flaten (7) av gulvplaten (1), og sideflater (14, 14’) som strekker seg mellom den andre flaten (7) og endeflaten (12), hvor minst én randflate (6) av5 gulvplaten (1) og én sideflate (14’) av minst én ribbe (10) tildanner et felles randplan (146), hvor ribben (10) som utgjør en del av det felles randplanet (146), er forsynt med minst én forsenkning (20), hvor i det minste et parti av den minst ene forsenkningen (20) strekker seg fra den første flaten (5) av gulvplaten (1) og mot endeflaten (12) av ribben (10);10 - å anordne gulvplatene (1) på et topp-parti av veggelementene (1’); og- å fylle forsenkningene (20, 20’) med et herdbart fyllmateriale.11. Framgangsmåte ifølge krav 10, hvor den minst ene utsparingen (20’) strekker seg inn i ribben mellom sideflatene (14, 14’) av ribben (10), og fra en fordypning tildannet i et parti av den første flaten (5) og randflaten (6) av den rektangulære15 gulvplaten (1).12. Framgangsmåte ifølge krav 10 eller 11 videre omfattende å forsyne hver gulvplate (1) med minst én tverrgående ribbe (10’) som rager ut fra den andre flaten (7) av platepartiet (3) og er arrangert vinkelrett på de minst to langstrakte ribbbene (10), hvor i det minste én av den minst ene tverrgående ribben (10’) har en20 sideflate (15) som tildanner et felles randplan (156) med en randflate (6’) som definerer bredden av platepartiet (3).13. Framgangsmåte ifølge et hvilket som helst av kravene 10–12, hvor framgangsmåten videre omfatter å anordne et varmeisolerende materiale i et rom mellom sidepartiene av ribbene (10) til gulvplaten (1).25 14. Framgangsmåte ifølge et hvilket som helst av kravene 10–13, omfattende å arrangere en lekt (34) langs hver endeflate (12) av de langstrakte ribbene (10) til gulvplaten (1).3499913015. Framgangsmåte ifølge krav 14, omfattende å feste et varmeisolerende materiale (32) mellom lekten (34) og endeflaten (12) av de langstrakte ribbene (10) til gulvplaten (1).
Drawings

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Patent classes

IPC classesE04B 5/02E04B 5/04E04B 5/06E04B 1/04CPC classesE04C 2/50E04B 5/04E04B 5/06E04B 1/04

Citations

BE 898617 A (A)GB 2471064 A (A)US 3918222 A (A)US 2215975 A (A)KR 20100100157 A (A)GB 636486 A (A)US 4197687 A (A)US 4942707 A (A)

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Teklas Invest AS
c/o Roar Pedersen, Revemyrveien 60 4625 FLEKKERØY NO (KRISTIANSAND Municipality, Agder county)Org. number: 924945303Inventors
Roar Pedersen
Revermyrveien 60 4625 FLEKKERØY NO (KRISTIANSAND Municipality, Agder county)

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HÅMSØ PATENTBYRÅ AS
HÅMSØ PATENTBYRÅ AS

Org. number: 918752900

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