GB2369833A - Reinforced lintel - Google Patents
Reinforced lintel Download PDFInfo
- Publication number
- GB2369833A GB2369833A GB0028471A GB0028471A GB2369833A GB 2369833 A GB2369833 A GB 2369833A GB 0028471 A GB0028471 A GB 0028471A GB 0028471 A GB0028471 A GB 0028471A GB 2369833 A GB2369833 A GB 2369833A
- Authority
- GB
- United Kingdom
- Prior art keywords
- block
- lintel
- reinforcement
- load
- top portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C2003/023—Lintels
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
A lintel is formed of an elongate block (10) of hardenable material moulded around a shaped reinforcement (12) of similar length. The reinforcement (12) is formed of metallic sheet material and has a top portion (14) at or near to the top of the block (10), and at least one supporting leg portion (16) extending down from the top portion (14) to terminate at or near to the bottom of the block (10). Those portions of the bottom of the or each leg portion (16) intended to be load-bearing have a load-spreading plate (18).
Description
LINTELS
This invention relates to an improved lintel particularly, but not necessarily, for outside walls of a building structure. Lintels are beams of metal or reinforced concrete to be used in bridging openings in walls, the openings being such as door openings, for doors or arches, or window openings.
A problem with a lintel made of metal is that the outer parts of it are exposed to outside and inside temperatures and cold bridging occurs, i. e. moisture condenses from the atmosphere on the metal part on the outside due to the metal part on the inside wall being at a higher temperature and the heat being conducted through the lintel from the outer part on the inside wall to the outer part on the outside all. In double-skinned walls, several forms of a lintel of top-hat cross-section have been proposed, and found to be satisfactory regarding obviating or mitigating cold bridging, however, a disadvantage still exists for single-skinned walls.
It is an object of the present invention to obviate or mitigate this disadvantage.
Accordingly, the present invention is a lintel formed of an elongate block of hardenable material moulded around a shaped reinforcement of similar length, the reinforcement being formed of metallic sheet material, and having a top portion at or near to the top of the block, and at least one supporting leg portion extending down from the top portion to terminate at or near to the bottom of the block, at least those portions of the bottom of the or each leg portion intended to be load-bearing having a load-spreading plate.
The material is preferably aerated or foamed to have a light weight characteristic The material may be cement in which discrete material such as pumice pieces or chips is a filler.
Preferably, the side of the block Intended to be the inside face is provided with a series of spaced upright battens recessed thereinto.
In an embodiment in which the top portions in the reinforcement underlies the top of the block, an elongate batten is preferably recessed into the block between the top of the block and the top portion of the reinforcement. The elongate batten is desirably spaced nearer the inside face of the block.
An embodiment of the present invention will now be described, by way of example, with reference to the accompanying schematic drawings in which:
Fig. 1 is an end view of a lintel of the present invention;
Fig. 2 is a perspective view of a reinforcement at one end thereof; and
Fig. 3 is a series of perspective end views of seven different shapes of reinforcement (shown schematically) to be used in a lintel.
Referring to the drawings, a lintel is formed of an elongate block 10 of hardenable material moulded in a mould (not shown) around a shaped reinforcement 12 of simiiar length. The reinforcement 12 is formed of metallic sheet material and has a top portion 14 at or near to the top of the block 10. The top portion 14 is supported by at least one leg portion 16 extending down therefrom to terminate at or near to the bottom of the block 10.
The reinforcement 12 may be of, for example, inverted U-shape, box-shape, Tshape, !-shape, Z-shape, C-shape or reverse C-shape. The sheet material may be indented or plain and perforate or imperforate. It may also be of expanded material. If the sheet material is plain and imperforate, the surfaces are roughened or are provided with keying means.
In relation to the shapes of reinforcement, such as those of inverted U-shape and T-shape, in which the portions of the bottom of the or each leg portion 16, normally each end portion, is intended to be load-bearing, a load-spreading plate is provided to spread the load and prevent the leg portions 16 cutting through the plastics material.
Each load-spreading plate in Figs. 1 and 2 is shown as a shoe 18 of sheet material with turned-up opposite end portions 20, the shoe 18 being positioned at right angles to the attitude of the axis of the reinforcement.
The material is aerated or foamed to have a light weight characteristic. The material is of cement in which discrete material, such as pumice pieces or chips, is a filler.
The side of the block 10 intended to be the inside face and is provided with a series of spaced upright battens 22 recessed thereinto to provide an anchorage for use in fitting, for example, curtain rails.
In an embodiment in which the top portion 14 of the reinforcement 12 underlies the top of the block 10, an elongate batten 24 of dove-tail cross-sectional shape is recessed into the block 10 between the top of the block 10 and the top portion 14 of the reinforcement 12. The elongate batten 24 is spaced nearer the inside face of the block 10 whereby to provide an anchorage for beams or flooring boards to be laid thereabove. The battens 22 and 24 are of dove-tail cross-sectional shape, the broader side being positioned innermost.
Fig. 3 shows seven possible shapes for reinforcements 12. In views (b), (c), (d) and (f), the load-spreading plate is a bottom portion 26 of the reinforcement integral with the leg portion 16. In views (a), (e) and (g), the load-spreading plate is the separate shoe 18 as described hereinbefore.
A lintel as described is used in a conventional way.
Variations and modifications can be made without departing from the scope of the invention described above.
Claims (7)
1. A lintel formed of an elongate block of hardenable material moulded around a shaped reinforcement of similar length, the reinforcement being formed of metallic sheet material, and having a top portion at or near to the top of the block, and at least one supporting leg portion extending down from the top portion to terminate at or near to the bottom of the block, at least those portions of the bottom of the or each leg portion intended to be load-bearing having a load-spreading plate.
2. A lintel as claimed in Claim 1, wherein the material is aerated or foamed to have a light weight characteristic
3. A lintel as claimed in Claim 1 or 2. wherein the material is cement in which discrete material is a filler.
4. A lintel as claimed in Claim 1,2 or 3, wherein the side of the block intended to be the inside face is provided with a series of spaced upright battens recessed thereinto.
5. A lintel as claimed in Claim 1,2, 3 or 4, wherein an elongate batten is recessed into the block between the top of the block and the top portion of the reinforcement.
6. A lintel as claimed in Claim 5, wherein he elongate batten is spaced nearer the inside face of the block.
7. A lintel substantially as hereinbefore described with reference to the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0028471A GB2369833A (en) | 2000-11-23 | 2000-11-23 | Reinforced lintel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0028471A GB2369833A (en) | 2000-11-23 | 2000-11-23 | Reinforced lintel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0028471D0 GB0028471D0 (en) | 2001-01-10 |
| GB2369833A true GB2369833A (en) | 2002-06-12 |
Family
ID=9903661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0028471A Withdrawn GB2369833A (en) | 2000-11-23 | 2000-11-23 | Reinforced lintel |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2369833A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1549428A (en) * | 1977-07-22 | 1979-08-08 | Smith G | Combined formwork and cavity tray for a brick arch |
| US4571913A (en) * | 1983-04-25 | 1986-02-25 | Arbed S.A. | Prefabricated fireproof steel and concrete beam |
| EP0517107A1 (en) * | 1991-06-06 | 1992-12-09 | Hayashi Seiko Co., Ltd. | Ferroconcrete constructing frame |
| GB2343687A (en) * | 1998-11-12 | 2000-05-17 | Keystone Lintels Ltd | Plastic lintel with metal reinforcement |
-
2000
- 2000-11-23 GB GB0028471A patent/GB2369833A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1549428A (en) * | 1977-07-22 | 1979-08-08 | Smith G | Combined formwork and cavity tray for a brick arch |
| US4571913A (en) * | 1983-04-25 | 1986-02-25 | Arbed S.A. | Prefabricated fireproof steel and concrete beam |
| EP0517107A1 (en) * | 1991-06-06 | 1992-12-09 | Hayashi Seiko Co., Ltd. | Ferroconcrete constructing frame |
| GB2343687A (en) * | 1998-11-12 | 2000-05-17 | Keystone Lintels Ltd | Plastic lintel with metal reinforcement |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0028471D0 (en) | 2001-01-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |