EP1007803B1 - Fire resisting wall - Google Patents

Fire resisting wall Download PDF

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Publication number
EP1007803B1
EP1007803B1 EP99939795A EP99939795A EP1007803B1 EP 1007803 B1 EP1007803 B1 EP 1007803B1 EP 99939795 A EP99939795 A EP 99939795A EP 99939795 A EP99939795 A EP 99939795A EP 1007803 B1 EP1007803 B1 EP 1007803B1
Authority
EP
European Patent Office
Prior art keywords
board
studs
layer
wall structure
fire resisting
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.)
Expired - Lifetime
Application number
EP99939795A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1007803A1 (en
Inventor
Paul Vincent Howard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BPB Ltd
Original Assignee
BPB Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BPB Ltd filed Critical BPB Ltd
Priority to DK99939795T priority Critical patent/DK1007803T3/da
Publication of EP1007803A1 publication Critical patent/EP1007803A1/en
Application granted granted Critical
Publication of EP1007803B1 publication Critical patent/EP1007803B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
    • E04B2/7407—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using frames with infill panels or coverings only; made-up of panels and a support structure incorporating posts
    • E04B2/7409—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using frames with infill panels or coverings only; made-up of panels and a support structure incorporating posts special measures for sound or thermal insulation, including fire protection
    • E04B2/7411—Details for fire protection

Definitions

  • This invention relates to fire resisting wall structure comprising a row of spaced vertical studs covered by respective facing layers of fire resisting building boards secured to the studs.
  • Fire resisting walls have been designed to survive a fire duration with no loss of integrity or insulation performance. This has led to a design where a wall consists of metal studs with boards attached to each side and occasionally insulation in the cavity. As the fire test progresses the layers of boards fall way until finally the wall fails either by heat transfer or through loss of integrity.
  • planking comprises sheet steel plates riveted to support sections, or studs, and multilayered gypsum board planking screwed thereover.
  • boards made in accordance with our Patent GB-B-2 053 779 which consist of a set cementitious (usually gypsum) core, preferably reinforced with chopped inorganic fibre, and a surface layer on at least one face comprising an inorganic fibre sheet embedded in the gypsum surface so that the material of the core extends in a continuous film over the web outer surface of the sheet.
  • This board affords good resistance to spread of flame, owing to its wholly inorganic surface, but also has a high degree of inherent fire resistance arising from the behaviour of the core materials when the board is exposed to fire.
  • the residue (Calcium sulphate) continues to act as an insulating barrier for as long as it remains intact.
  • Inorganic fibre webs and core fibre reinforcement help to ensure the integrity of the board and to maintain a barrier to the fire for some considerable time after calcination.
  • such a fire resisting wall structure is characterised in that the structure comprises two spaced rows of studs, and that the rows of studs are separated by a central layer of fire resisting building board to which the studs of both rows are secured, the thickness of the central layer being greater than that of either of the facing layers.
  • the studs or supports of fire resisting material are preferably of metal, such as steel.
  • the preferred board is inorganic fibre reinforced gypsum board, for example of the kind discussed above.
  • the invention achieves its object by providing support to the boards for the duration required.
  • the frame closest to the fire is sacrificial whilst the second frame remains cool and consequently has the strength to keep the wall standing for the required duration.
  • the thicker core continues to be supported by the surviving frame.
  • each layer of board is preferably made up of several thicknesses of board.
  • the desired thickness of the central layer can be obtained by employing at least two thicknesses of board while the facing layers may consist of fewer thicknesses of board.
  • An advantage of the invention is its economy in the quantity of building board required for a given degree of fire resistence. This follows from the location of the majority of the boards, that is, the greater amount of fire resistant material, in the centre layer, where it is protected by the sacrificial outer layers.
  • This centre-weighted or symmetrical design enables thinner facing layers to be used than if each facing layer itself had to constitute the main defence against the transmission of fire, which might attack either side.
  • the facing layers, or at least the layer on that face exposed to a known fire risk preferably incorporates a material of high fire resistance and integrity, for example a metal (e.g. steel) sheet; this can be used to maximise the potential of the air cavity or may serve to reduce the number of thicknesses of board employed in the outer layers.
  • This wall is designed to maintain 4 hours fire resistance at extended heights and consequently when tested at 3m height achieves 5 hours fire resistance.
  • the traditional failure criteria do not apply, and the critical factor is the temperature of the cold metal frame at 4 hours duration.
  • the cold metal frame has a temperature of approx. 100°C with a small temperature differential over the stud at the four hour duration, which allows the design to be used at extended heights.
  • a first framework in erecting the partition shown in the drawing, includes a metal head channel and base channel which are fixed at 600mm centres to the adjacent floor and ceiling surfaces respectively. Strips of inorganic fibre reinforced gypsum board 72mm wide and 25mm thick are interposed between the channels and the surfaces to which they are fixed. Metal studs 10 are then positioned at 600mm centres between the head and base channels. The end studs at the sides of the partition are fixed to the adjacent wall at 600mm centres through another strip of inorganic fibre reinforced gypsum board.
  • a first layer 11 of 15mm board is fixed by 25mm screws at 300mm centres to all metal framing, a second layer 12 of 25mm board by 42mm screws at 300mm centres and the third layer 13 of 15mm board by 75mm screws at similar spacing.
  • the joints between the boards are staggered with respect to adjacent layers, with a full board at the fixed edge.
  • a second similar metal stud framework (but using 50mm thick strips of board at the head, base and sides) is constructed alongside and in contact with the three layers of board.
  • the studs 14 in the second framework are staggered by 300mm with respect to the studs 10 in the first framework, and the second framework is fixed to the three layers of board 11-13 using 75mm screws.
  • each framework is then lined with 0.7mm steel sheet 15 fixed at 300mm centres with 13mm wafer head screws.
  • a layer of 25mm board 16 is fixed to the steel sheet using 25mm screws at 150mm centres round the perimeter and down the centre of the boards, and an outer layer of 15mm board 17 is fixed through to the steel sheet at 300mm centres using 42mm screws round the perimeter and down the centre of the boards.
  • the vertical joints between the boards in the outer layers are positioned such that no joint is in alignment with the position of a stud. All joints are taped and filled, and screwheads spotted, with a conventional joint filler.
  • the channels and studs are of cold formed hot dipped galvanised steel in accordance with BS 2989 (EN 10142), and the boards are glass fibre reinforced gypsum board in accordance with UK Patent GB-B-2 053 779, preferably as sold under the designation 'Glasroc S'.
EP99939795A 1998-06-08 1999-06-08 Fire resisting wall Expired - Lifetime EP1007803B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DK99939795T DK1007803T3 (da) 1998-06-08 1999-06-08 Brandsikker væg

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9812326A GB9812326D0 (en) 1998-06-08 1998-06-08 Fire resisting wall
GB9812326 1998-06-08
PCT/GB1999/001801 WO1999064690A1 (en) 1998-06-08 1999-06-08 Fire-resisting wall

Publications (2)

Publication Number Publication Date
EP1007803A1 EP1007803A1 (en) 2000-06-14
EP1007803B1 true EP1007803B1 (en) 2004-09-22

Family

ID=10833406

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99939795A Expired - Lifetime EP1007803B1 (en) 1998-06-08 1999-06-08 Fire resisting wall

Country Status (6)

Country Link
EP (1) EP1007803B1 (da)
AU (1) AU4278499A (da)
DE (1) DE69920378T2 (da)
DK (1) DK1007803T3 (da)
GB (2) GB9812326D0 (da)
WO (1) WO1999064690A1 (da)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2837853A1 (fr) * 2002-03-26 2003-10-03 Lafarge Platres Nouvelle cloison comprenant des plaques de platre
DE102004006321A1 (de) * 2003-11-13 2005-06-16 Rheinhold & Mahla Ag Feuerfeste Wand
WO2014091276A1 (en) 2012-12-11 2014-06-19 Knauf A/S Acoustic wall panel
US11339572B1 (en) 2017-01-23 2022-05-24 Gold Bond Building Products, Llc Method of manufacturing gypsum board with improved fire
EP3739140B1 (en) * 2019-05-16 2022-04-13 Muotolevy Oy A fire retaining wall structure assembly for partitioning adjacent spaces

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3305993A (en) * 1964-06-10 1967-02-28 United States Gypsum Co Sound control wall construction
GB1298932A (en) * 1968-09-06 1972-12-06 Unilock Ltd Improvements in or relating to partition walls
AU531527B2 (en) * 1979-05-30 1983-08-25 Bpb Industries Ltd. Cementitious building board
DE29505833U1 (de) * 1995-04-05 1995-06-08 Rigips Gmbh Feuerbeständige und Last aufnehmende Montagewand
US5870867A (en) * 1996-12-09 1999-02-16 Steelcase Inc. Solid core partition wall

Also Published As

Publication number Publication date
EP1007803A1 (en) 2000-06-14
DE69920378T2 (de) 2005-09-29
DK1007803T3 (da) 2005-01-31
GB9913329D0 (en) 1999-08-11
DE69920378D1 (de) 2004-10-28
GB2338252A (en) 1999-12-15
WO1999064690A1 (en) 1999-12-16
AU4278499A (en) 1999-12-30
GB2338252B (en) 2002-04-24
GB9812326D0 (en) 1998-08-05

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