GB2459708A - Pultruded fibre composite cavity wall lintel - Google Patents
Pultruded fibre composite cavity wall lintel Download PDFInfo
- Publication number
- GB2459708A GB2459708A GB0808018A GB0808018A GB2459708A GB 2459708 A GB2459708 A GB 2459708A GB 0808018 A GB0808018 A GB 0808018A GB 0808018 A GB0808018 A GB 0808018A GB 2459708 A GB2459708 A GB 2459708A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cavity wall
- fibre composite
- lintel
- composite cavity
- wall lintel
- 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.)
- Granted
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 21
- 239000002131 composite material Substances 0.000 title claims abstract description 18
- 238000010276 construction Methods 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000011253 protective coating Substances 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract 1
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 239000011152 fibreglass Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229920005749 polyurethane resin Polymers 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- E04C3/28—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of materials not covered by groups E04C3/04 - E04C3/20
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/70—Drying or keeping dry, e.g. by air vents
- E04B1/7038—Evacuating water from cavity walls, e.g. by using weep holes
- E04B1/7046—Evacuating water from cavity walls, e.g. by using weep holes using trays
-
- 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)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
A pultruded fibre composite cavity wall lintel has a homogenous construction and is inert. It has low thermal conductivity and is light weight for ease of installation. The lintel can be manufactured in lengths of 6 metres.
Description
Description
Pultruded Fibre Composite Cavity Wall Lintel This invention relates to a device used in the construction industry to support walls directly above structural openings such as windows, doors, and apertures.
Cavity Wall Lintels are commonly used throughout the construction industry to support the walls of buildings, above windows, doors, and apertures.
However; conventionally they are made from: re-enforced concrete, steel, or timber and whilst they fulfil their structural role adequately, they do have other performance limitations that they are unable to overcome. These include thermal performance (Cold bridging between cavity walls), weight manual handling and lifting lintel into place, corrosion or rot over the lintel's life cycle, and sustainability and impact on the environment.
The invention (Pultruded Fibre Composite Cavity Wall Lintel) is the use of the latest modern materials: Fibreglass or basalt, roving's and matting combined with a Fire retardant Polyurethane Resin System Pultruded into a structural load bearing Lintel completely homogenous, designed for the construction industry.
Fibreglass Pultrusion is not new. The first patents for pultrusion were issued in 1946, however time has moved on and so have the materials. The Pultruded fibre composite lintel is a fabrication process to produce lineal profiles that brings new high performance Space-Age' composites within reach of the construction industry.
Continuous fibre reinforcements, such as fibreglass, in roving and mat forms are drawn through a polyurethane resin impregnation station to coat each fibre with a specially formulated Themiosetting Resin mixture. The coated fibres are assembled by a forming and shaping guide, then drawn (pulled) through a lintel die, where under pressure and heat the resins are cured. The ratio of resin to fibre does vary depending on structural performance requirements however it ranges from 90-95% Fibre's and 5-10% resin The result is a very high strength lintel profile, ready for use.
Several bespoke lintel dies are required to accommodate the varied cavity wall thicknesses used in the construction industry. (See below) Figure 1. Shows a typical 50mm cavity opening, the two varying heights are required to determine the Safe working Load against the Effective Span requirement.
Figure 2. Shows a typical 75mm cavity opening, the two varying heights are required to determine the Safe working Load against the Effective Span requirement.
Figure 3.Shows a typical 100mm cavity opening, the two varying heigths are required to determine the Safe working Load against the Effective Span requirement.
Figure 4. Shows the damp proof membrane position, it should be noted that because the Pultruded Lintel is totally inert and resistant to corrosion the width of membrane required can radically be reduced compared to conventional steel lintels Figure 5. Shows the typical bottom plate applied to all Pultruded Lintels showing the small ridges that run along the length of every lintel to aid the bond on the mortar interface.
Once Pultruded the lintels are homogeneous and offer the following benefits over the conventional ones currently used: Thermal Conductivity -Pultruded Fibre Composite Cavity Wall Lintel combines strength with very low levels of conductivity, without adding thermal breaks. Pultruded Fibre Composite Lintel is an amazing 500 times less conductive than aluminium complete with a very low coefficient of expansion.
Non Corroding -Pultruded Fibre Composite Cavity Wall Lintel is inert and will not corrode, similar materials are used in boats and bridge structures which face punishing loads and stresses as well as corrosive materials such as salt water. The British Research Establishment have acknowledged this and given similar materials a 50year + Life Cycle which is extending as time passes and more data is collated.
Environmentally Friendly -Pultruded Fibre Composite Cavity Wall Lintel not only features the lowest embodied energy (low energy consumption in lineal production) when compared to other common Lintel materials window frame materials with the exception of timber while providing excellent life expectancy. This will be the first Eco friendly Lintel specifically designed to meet the latest government legislation with regard to the Code for Sustainable Homes.
Strength -Pultruded Fibre Composite Cavity Wall Lintel will deliver the strength characteristics required for the Safe Working Load over the Effective Span requirements, and because it's an homogenous product it will not suffer from any joining, plating or interface issues that can occur between two differing or similar materials.
Weight -Puttruded Fibre Composite Cavity Wall Lintel will deliver better weight to strength ratios than convention Lintels taking the manual handling problems associated with conventional Lintels out of the equation.
Versatility -Pultruded Fibre Composite Cavity Wall Lintel offer a great deal of versatility, they can be cut on site using a conventional handsaw, and be drilled using conventional drills, the also offer very good screw retention.
Claims (5)
- Claims 1. A Pultruded Fibre Composite Cavity Wall Lintel is completely homogenous in manufacture made from the latest modern materials giving it high structural strength for use in the construction industry to support walls above windows, doors, and apertures in the building structures.
- 2. A Pultruded Fibre Composite Cavity Wall Lintel that is totally inert, and will not corrode, requires no protective coatings, also offering a lower embodied energy, combined with a 50 year plus life cycle to meet the latest Eco building standards.
- 3. A Pultruded Fibre Composite Cavity Wall Lintel with very low thermal conductivity, affording the construction industry the first naturally thermally broken cavity wall lintel.
- 4. A Pultruded Fibre Composite Cavity Wall Lintel which is light weight and versatile, easier to install being a light weight product, and can easily be cut using conventional hand tools.
- 5. A PuJtruded Fibre Composite Cavity Wall Lintel can be manufactured in up to 6 metre lengths and cut to the required size on site by the end user
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0808018A GB2459708B (en) | 2008-05-02 | 2008-05-02 | Twin chamber pultruded fibre composite cavity wall lintel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0808018A GB2459708B (en) | 2008-05-02 | 2008-05-02 | Twin chamber pultruded fibre composite cavity wall lintel |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB0808018D0 GB0808018D0 (en) | 2008-06-11 |
| GB2459708A true GB2459708A (en) | 2009-11-04 |
| GB2459708B GB2459708B (en) | 2011-06-22 |
Family
ID=39537181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0808018A Expired - Fee Related GB2459708B (en) | 2008-05-02 | 2008-05-02 | Twin chamber pultruded fibre composite cavity wall lintel |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2459708B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2480109A (en) * | 2010-05-08 | 2011-11-09 | James Murphy | An open-ended and hollow prism particularly for use as a lint l |
| GB2491200A (en) * | 2011-05-27 | 2012-11-28 | Keystone Lintels Ltd | Insulation arrangement for location in or about a cavity wall with a damp proof course |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1298797A (en) * | 1968-09-30 | 1972-12-06 | Brian Robinson | Lintels |
| GB2376027A (en) * | 2001-06-01 | 2002-12-04 | Frederick James Holme | A plastics lintel |
| GB2410508A (en) * | 2004-01-29 | 2005-08-03 | Innergoal Ltd | Cavity wall lintel |
| GB2435057A (en) * | 2006-02-13 | 2007-08-15 | Keystone Lintels Ltd | Lintel of glass reinforced plastics |
-
2008
- 2008-05-02 GB GB0808018A patent/GB2459708B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1298797A (en) * | 1968-09-30 | 1972-12-06 | Brian Robinson | Lintels |
| GB2376027A (en) * | 2001-06-01 | 2002-12-04 | Frederick James Holme | A plastics lintel |
| GB2410508A (en) * | 2004-01-29 | 2005-08-03 | Innergoal Ltd | Cavity wall lintel |
| GB2435057A (en) * | 2006-02-13 | 2007-08-15 | Keystone Lintels Ltd | Lintel of glass reinforced plastics |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2480109A (en) * | 2010-05-08 | 2011-11-09 | James Murphy | An open-ended and hollow prism particularly for use as a lint l |
| GB2491200A (en) * | 2011-05-27 | 2012-11-28 | Keystone Lintels Ltd | Insulation arrangement for location in or about a cavity wall with a damp proof course |
| GB2491200B (en) * | 2011-05-27 | 2016-10-05 | Keystone Lintels Ltd | An insulation arrangment |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0808018D0 (en) | 2008-06-11 |
| GB2459708B (en) | 2011-06-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20160502 |