WO1997005342A1 - Improvements in and relating to fire resistant assemblies - Google Patents
Improvements in and relating to fire resistant assemblies Download PDFInfo
- Publication number
- WO1997005342A1 WO1997005342A1 PCT/GB1996/001720 GB9601720W WO9705342A1 WO 1997005342 A1 WO1997005342 A1 WO 1997005342A1 GB 9601720 W GB9601720 W GB 9601720W WO 9705342 A1 WO9705342 A1 WO 9705342A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fire
- fabric
- barrier according
- fire cover
- cover
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
- E04B9/006—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation with means for hanging lighting fixtures or other appliances to the framework of the ceiling
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C2/00—Fire prevention or containment
- A62C2/06—Physical fire-barriers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
Definitions
- This invention is concerned with at least temporarily preventing flames from passing through service opening ⁇ in walls and/or ceilings.
- One proposal for accomplishing this is known from GB-A-2235710.
- This discloses a fire cover of woven fire resistant fabric supported by a structural frame to form a tent-like structure. The edges of the fabric lie against the surface of a substrate so as to surround the margins of an aperture in the latter. Whilst this type of structure is technically effective, it does require the production of not only a tent-like fabric structure, but also of a suitable supporting frame, preferably of metal. It is therefore an object of the present invention to provide a simplified construction.
- a fire cover or fire barrier constituted by a tray-like assembly, optionally comprising a base and sidewalls, and made from glass fibre fabric treated to enhance its integrity under fire conditions.
- the glass fabric is preferably a texturised glass fibre fabric and the treatment to enhance integrity under fire conditions is, for example, of the kind disclosed in GB-A-2079801.
- the assembly is used in an inverted attitude, with its edges in contact with one surface of a substrate surrounding the margins of an aperture which is to be protected.
- the fire cover or fire barrier may be attached to the surface of the substrate by any convenient means, including for example, by means of screws and/or clips, although in some circumstances the use of gravity alone may be possible.
- the substrate is a suspended ceiling with apertures containing, for example, light fittings. Even more surprisingly, in the latter case, the assembly can be allowed to collapse onto the back of a light fitting without compromising its performance as a fire cover.
- the substrate-contacting portions of the sidewalls may be provided with lateral extensions or flaps which in use extend over and lie on adjacent portions of the substrate.
- a woven glass-fibre fabric is preferred, preferably one based on textured yarns. It may be formed into the tray-like assembly of this invention in any convenient manner, for example, by cutting and sewing. If desired, the assembly may be provided with at least one air vent. This may be preferred where the aperture contains a light fitting which may otherwise overheat.
- Fabric densities in the range 200 to 3000 g/m 2 may be employed, more preferably in the range 500 to 1200 g/m 2 .
- Figure 1 is a schematic view of a fire cover or fire barrier according to the invention
- Figure 2 is a perspective view of the fire cover or fire barrier of Figure 1 located above a suspended ceiling.
- a box-like glass fibre fabric assembly 1 comprises four side walls 2, 3, 4 and 5 respectively, extending from the margins of a rectangular base portion 6.
- the tray is in fact a one-piece construction, made from a fabric sheet, rectangular corner portions of which have been cut away to permit folding into the configuration shown.
- the abutting edges of the side walls are joined by stitching (not shown) , although it would be equally acceptable to use staples and/or clips.
- Alternative ways of fabricating the corners and/or the complete assembly are also possible.
- FIG 2 the glas ⁇ fibre fabric as ⁇ embly of Figure 1 i ⁇ shown in po ⁇ ition on the upper surface of a conventional suspended ceiling.
- the latter comprises a plurality of ceiling tiles 11 supported by cross rails 15, 16 and the usual hangers (not shown) .
- One such tile has been replaced by a light fitting (not ⁇ hown) and to protect the aperture defined by that fitting again ⁇ t immediate passage of flames in the event of a fire the fire barrier of Figure 1 has been inverted, placed over the fitting and its margin ⁇ secured to the adjacent tiles/rails.
- the base 6 and ⁇ idewalls 2, 3, 4 and 5 being non-rigid are supported by the light fitting, onto which the fabric in effect collapses.
- the fabric was a 900g/m 2 woven gla ⁇ fibre textile, without any reinforcement.
- the cloth wa ⁇ woven from texturi ⁇ ed gla ⁇ fibre yarn and it was treated with a non-intumescent char-forming compo ⁇ ition of the kind disclosed in GB-A-2079801.
- the test in this case was carried out using a proprietary suspended ceiling system which had already a one hour fire rating under BS476, part 23:5, 1987 (protecting steel beams) .
- the individual sidewalls 2, 3, 4 and 5 may be provided with marginal flaps, as for example indicated at 10 by dotted lines in Figures 1 and 2. Such flaps may serve to enhance fire performance by providing additional protection for the margins of the light fitting (or other) aperture.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Building Environments (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96926461A EP0787236A1 (en) | 1995-07-21 | 1996-07-18 | Improvements in and relating to fire resistant assemblies |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9515019.9 | 1995-07-21 | ||
GBGB9515019.9A GB9515019D0 (en) | 1995-07-21 | 1995-07-21 | Improvements in and relating to fire resistant assemblies |
GBGB9523451.4A GB9523451D0 (en) | 1995-11-16 | 1995-11-16 | Improvements in and relating to fire resistant assemblies |
GB9523451.4 | 1995-11-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997005342A1 true WO1997005342A1 (en) | 1997-02-13 |
Family
ID=26307441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1996/001720 WO1997005342A1 (en) | 1995-07-21 | 1996-07-18 | Improvements in and relating to fire resistant assemblies |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0787236A1 (en) |
WO (1) | WO1997005342A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1367191A1 (en) * | 2002-05-29 | 2003-12-03 | Kaiser GmbH & Co. KG | Ceiling, wall or floor panel for fire protection |
WO2006103426A1 (en) * | 2005-03-29 | 2006-10-05 | Laurence Keith Kovacs | Fire hood |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4210070A (en) * | 1978-03-06 | 1980-07-01 | Dayus Barry R | Ceiling fixture with thermal protection |
GB2079801A (en) * | 1980-06-27 | 1982-01-27 | Tba Industrial Products Ltd | Weld splash resistant glass fibre fabrics |
DE9318416U1 (en) * | 1993-12-02 | 1994-03-17 | Promat Gmbh | Suspended ceiling for fire protection purposes |
GB2270936A (en) * | 1992-09-29 | 1994-03-30 | Arthur Peter Hamilton | Fire stop covering device, e.g. for ceiling aperture |
-
1996
- 1996-07-18 EP EP96926461A patent/EP0787236A1/en not_active Ceased
- 1996-07-18 WO PCT/GB1996/001720 patent/WO1997005342A1/en not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4210070A (en) * | 1978-03-06 | 1980-07-01 | Dayus Barry R | Ceiling fixture with thermal protection |
GB2079801A (en) * | 1980-06-27 | 1982-01-27 | Tba Industrial Products Ltd | Weld splash resistant glass fibre fabrics |
GB2270936A (en) * | 1992-09-29 | 1994-03-30 | Arthur Peter Hamilton | Fire stop covering device, e.g. for ceiling aperture |
DE9318416U1 (en) * | 1993-12-02 | 1994-03-17 | Promat Gmbh | Suspended ceiling for fire protection purposes |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1367191A1 (en) * | 2002-05-29 | 2003-12-03 | Kaiser GmbH & Co. KG | Ceiling, wall or floor panel for fire protection |
WO2006103426A1 (en) * | 2005-03-29 | 2006-10-05 | Laurence Keith Kovacs | Fire hood |
Also Published As
Publication number | Publication date |
---|---|
EP0787236A1 (en) | 1997-08-06 |
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