EP1931834A1 - Apparatus for protecting a building element from fire - Google Patents

Apparatus for protecting a building element from fire

Info

Publication number
EP1931834A1
EP1931834A1 EP06779298A EP06779298A EP1931834A1 EP 1931834 A1 EP1931834 A1 EP 1931834A1 EP 06779298 A EP06779298 A EP 06779298A EP 06779298 A EP06779298 A EP 06779298A EP 1931834 A1 EP1931834 A1 EP 1931834A1
Authority
EP
European Patent Office
Prior art keywords
metal casing
building element
fire
intumescent material
protecting
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Withdrawn
Application number
EP06779298A
Other languages
German (de)
French (fr)
Inventor
Anthony Tiernan
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.)
Interact Fire Solutions Ltd
Original Assignee
Interact Fire Solutions 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 Interact Fire Solutions Ltd filed Critical Interact Fire Solutions Ltd
Publication of EP1931834A1 publication Critical patent/EP1931834A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • E04B1/92—Protection against other undesired influences or dangers
    • E04B1/94—Protection against other undesired influences or dangers against fire
    • E04B1/941—Building elements specially adapted therefor
    • E04B1/943—Building elements specially adapted therefor elongated
    • E04B1/944—Building elements specially adapted therefor elongated covered with fire-proofing material
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/30—Columns; Pillars; Struts
    • E04C3/32—Columns; Pillars; Struts of metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/072—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of specially adapted, structured or shaped covering or lining elements
    • E04F13/073—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of specially adapted, structured or shaped covering or lining elements for particular building parts, e.g. corners or columns
    • E04F13/0733—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of specially adapted, structured or shaped covering or lining elements for particular building parts, e.g. corners or columns for corners

Definitions

  • the invention relates to an apparatus for protecting a building element from fire.
  • the invention is particularly suitable for protecting structural steel sections from fire, but it is not limited to this application.
  • Structural steel sections are load bearing columns used in the construction industry. During a fire, if the temperature of the steel columns exceeds 550 0 C, then they will lose their load bearing capacity and the building will collapse.
  • intumescent materials to protect structural steel sections from fire. Intumescent materials act by expanding rapidly by up to eight times their original thickness under the influence of extreme heat to create an insulating barrier between the substrate to which the intumescent material is applied and the fire.
  • the intumescent material is sprayed directly onto the structural steel section.
  • a disadvantage of this method is that it does not disguise the profile of the structural steel section, and it is difficult to obtain an acceptable finish by spraying the intumescent material.
  • an intumescent material is painted on to the structural steel sections to offer fire protection.
  • Decorative secondary cladding is then attached directly on top of the thin film of intumescent material.
  • the cladding has a good finish and hides the profile of the steel.
  • this method provides limited fire protection and breaches the integrity of the previously applied system. It is an object of this invention to seek to mitigate the above disadvantages.
  • the invention provides an apparatus for protecting a building element from fire, the apparatus comprising a metal casing for surrounding at least a portion of the building element, the external surfaces of the metal casing being coated with a layer of intumescent material.
  • the profile of the casing is not limited to being the same as that of the building element, and can be of any desired shape.
  • the intumescent material is coated on the external surfaces of the metal casing, there is room for this material to expand on exposure to extreme heat so that the fire protection performance of the apparatus is not compromised.
  • the intumescent material may be a cross-linkable material.
  • the intumescent material may be an epoxy material. Such a material has been found to provide a particularly good finish as well as providing an effective insulating barrier.
  • the intumescent material may be cast onto the metal casing. Casting the intumescent material also improves finish, thereby improving the aesthetic appearance of the apparatus.
  • the metal casing may comprise at least two sections, which, in use, are joined together. This facilitates storage and delivery of the apparatus. It also means that . it is possible to provide an apparatus which can be applied to a building element after that element has been installed in a building.
  • the metal casing may be divided longitudinally. It will then be possible to apply the metal casing to an elongate structural steel section which has already been installed.
  • the metal casing may be perforated.
  • the apparatus may comprise means for fastening the metal casing to a building element. Such means are particularly useful where the diameter of the metal casing is greater than that of the building element so that it is necessary to hold the metal casing in place.
  • Figure 1 shows a cross-sectional side view of an apparatus according to the invention
  • Figure 2 shows a cross-sectional view along line A-A on Figure 1;
  • Figure 3 shows a plan view of the apparatus of Figure 1;
  • Figure 4 shows a exploded cross-sectional perspective view of the apparatus of Figure 1;
  • Figure 5 shows cross-sectional views of a number of embodiments of the invention.
  • Figures 1 to 3 show an apparatus 1 for protecting a building element 2 from fire, the apparatus 1 comprising a metal casing 3 for surrounding at least a portion of the building element 2, the external surfaces of the metal casing 3 being coated with a layer 4 of intumescent material.
  • a layer 4 of intumescent material is cast over a supporting perforated mild steel sheet which has been pre- rolled or pressed into shape to form a cylindrical metal casing 3.
  • the layer 4 of intumescent material (a commercially available epoxy material) is then cured, and the metal casing 3 is cut longitudinally to form two symmetrical sections 5. A line of screw holes 6 are formed along each edge 7 of each section 5.
  • the sections 5 are assembled around the building element 2, which in the described embodiment is a structural steel section, to re-form the cylindrical metal casing 3.
  • Two curved clamping plates 8, each including two parallel lines of screw holes 9, are then positioned on the inside of the metal casing 3 so that a clamping plate 8 straddles each join between the sections 5.
  • the clamping plates 8 are then fastened using a plurality of screws or bolts 10, each of which goes through a screw hole 6 in the coated metal casing 3 and a screw hole 9 in a clamping plate 8.
  • Each clamping plate 8 runs the entire length of the metal casing 3.
  • clamping plates 8 may be fastened to the metal casing using clips, thereby eliminating the need for screws and screw holes.
  • the two sections 5 are attached to the metal casing 4 by way of a number of profiled "U" brackets 11.
  • Brackets 11 at the lower end of the metal casing 3 are bolted directly to the floor and section 5 and are peened or bolted to the building element 2 to allow the element 2 to stand at floor level 12.
  • Two brackets 11 at the upper end of the metal casing are attached to the building element 2 above the suspended ceiling level 13.
  • a fire batt collar 14 rests on top of the upper brackets 11 to completely surround the building element 2.
  • Mastic 15 is used to seal the joint between the cladding and the batt, and epoxy intumescent fillets are applied to the joints between the batt and steel sections.
  • a second layer 16 of intumescent material is then applied to the exposed part of the building element 2 above the suspended ceiling level 13.
  • Figure 4 shows a number of alternative embodiments of the invention in each of which the metal casing 3 has a different cross-section.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Building Environments (AREA)

Abstract

Apparatus for protecting a building element from fire, the apparatus comprising a metal casing for surrounding at least a portion of the building element, the external surfaces of the metal casing being coated with a layer of intumescent material.

Description

Apparatus for Protecting a Building Element from Fire
The invention relates to an apparatus for protecting a building element from fire. The invention is particularly suitable for protecting structural steel sections from fire, but it is not limited to this application.
Structural steel sections are load bearing columns used in the construction industry. During a fire, if the temperature of the steel columns exceeds 5500C, then they will lose their load bearing capacity and the building will collapse.
It is known to use intumescent materials to protect structural steel sections from fire. Intumescent materials act by expanding rapidly by up to eight times their original thickness under the influence of extreme heat to create an insulating barrier between the substrate to which the intumescent material is applied and the fire.
In one known method, the intumescent material is sprayed directly onto the structural steel section. A disadvantage of this method is that it does not disguise the profile of the structural steel section, and it is difficult to obtain an acceptable finish by spraying the intumescent material.
In another known method, an intumescent material is painted on to the structural steel sections to offer fire protection. Decorative secondary cladding is then attached directly on top of the thin film of intumescent material. The cladding has a good finish and hides the profile of the steel. However, because the clamping plate is applied directly to the intumescent material, there is no room for the intumescent material to expand to form an insulating barrier to the structural steel. This means that this method provides limited fire protection and breaches the integrity of the previously applied system. It is an object of this invention to seek to mitigate the above disadvantages.
Accordingly, the invention provides an apparatus for protecting a building element from fire, the apparatus comprising a metal casing for surrounding at least a portion of the building element, the external surfaces of the metal casing being coated with a layer of intumescent material.
By using a metal casing, it is possible to hide the profile of the building element. This means that the profile of the casing is not limited to being the same as that of the building element, and can be of any desired shape. Moreover, because the intumescent material is coated on the external surfaces of the metal casing, there is room for this material to expand on exposure to extreme heat so that the fire protection performance of the apparatus is not compromised.
The intumescent material may be a cross-linkable material. For example, the intumescent material may be an epoxy material. Such a material has been found to provide a particularly good finish as well as providing an effective insulating barrier.
The intumescent material may be cast onto the metal casing. Casting the intumescent material also improves finish, thereby improving the aesthetic appearance of the apparatus.
The metal casing may comprise at least two sections, which, in use, are joined together. This facilitates storage and delivery of the apparatus. It also means that. it is possible to provide an apparatus which can be applied to a building element after that element has been installed in a building. For example, the metal casing may be divided longitudinally. It will then be possible to apply the metal casing to an elongate structural steel section which has already been installed.
The metal casing may be perforated.
The apparatus may comprise means for fastening the metal casing to a building element. Such means are particularly useful where the diameter of the metal casing is greater than that of the building element so that it is necessary to hold the metal casing in place.
An embodiment of the invention will now be described by way of example with reference to the following drawings of which :-
Figure 1 shows a cross-sectional side view of an apparatus according to the invention;
Figure 2 shows a cross-sectional view along line A-A on Figure 1;
Figure 3 shows a plan view of the apparatus of Figure 1;
Figure 4 shows a exploded cross-sectional perspective view of the apparatus of Figure 1; and
Figure 5 shows cross-sectional views of a number of embodiments of the invention.
Figures 1 to 3 show an apparatus 1 for protecting a building element 2 from fire, the apparatus 1 comprising a metal casing 3 for surrounding at least a portion of the building element 2, the external surfaces of the metal casing 3 being coated with a layer 4 of intumescent material. To manufacture the apparatus 1, a layer 4 of intumescent material is cast over a supporting perforated mild steel sheet which has been pre- rolled or pressed into shape to form a cylindrical metal casing 3.
The layer 4 of intumescent material (a commercially available epoxy material) is then cured, and the metal casing 3 is cut longitudinally to form two symmetrical sections 5. A line of screw holes 6 are formed along each edge 7 of each section 5.
The sections 5 are assembled around the building element 2, which in the described embodiment is a structural steel section, to re-form the cylindrical metal casing 3. Two curved clamping plates 8, each including two parallel lines of screw holes 9, are then positioned on the inside of the metal casing 3 so that a clamping plate 8 straddles each join between the sections 5. The clamping plates 8 are then fastened using a plurality of screws or bolts 10, each of which goes through a screw hole 6 in the coated metal casing 3 and a screw hole 9 in a clamping plate 8. Each clamping plate 8 runs the entire length of the metal casing 3.
Any holes in the layer 4 of intumescent material such as along the joins between the sections 5 are filled with uncured intumescent material.
In an alternative embodiment, the clamping plates 8 may be fastened to the metal casing using clips, thereby eliminating the need for screws and screw holes.
The two sections 5 are attached to the metal casing 4 by way of a number of profiled "U" brackets 11.
Two brackets 11 at the lower end of the metal casing 3 are bolted directly to the floor and section 5 and are peened or bolted to the building element 2 to allow the element 2 to stand at floor level 12. Two brackets 11 at the upper end of the metal casing are attached to the building element 2 above the suspended ceiling level 13. A fire batt collar 14 rests on top of the upper brackets 11 to completely surround the building element 2. Mastic 15 is used to seal the joint between the cladding and the batt, and epoxy intumescent fillets are applied to the joints between the batt and steel sections.
A second layer 16 of intumescent material is then applied to the exposed part of the building element 2 above the suspended ceiling level 13.
Figure 4 shows a number of alternative embodiments of the invention in each of which the metal casing 3 has a different cross-section.

Claims

1. Apparatus for protecting a building element from fire, the apparatus comprising a metal casing for surrounding at least a portion of the building element, the external surfaces of the metal casing being coated with a layer of intumescent material.
2. Apparatus according to claim 1, the intumescent material being a cross-linkable material.
3. Apparatus according to claim 2, the intumescent material being an epoxy material.
4. Apparatus according to any preceding claim, wherein the intumescent material is cast onto the metal casing.
5. Apparatus according to any preceding claim, the metal casing comprising at least two sections, which, in use, are joined together.
6. Apparatus according to claim 5, wherein the metal casing is divided longitudinally.
7. Apparatus according to claim 4, wherein the metal casing is perforated.
8. Apparatus according to any preceding claim, comprising means for fastening the metal casing to a building element.
9. Apparatus for protecting a building element from fire substantially as described herein or as shown in the drawings.
EP06779298A 2005-09-07 2006-09-05 Apparatus for protecting a building element from fire Withdrawn EP1931834A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0518187A GB2429983A (en) 2005-09-07 2005-09-07 Protecting a building element from fire
PCT/GB2006/003279 WO2007028974A1 (en) 2005-09-07 2006-09-05 Apparatus for protecting a building element from fire

Publications (1)

Publication Number Publication Date
EP1931834A1 true EP1931834A1 (en) 2008-06-18

Family

ID=35220997

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06779298A Withdrawn EP1931834A1 (en) 2005-09-07 2006-09-05 Apparatus for protecting a building element from fire

Country Status (3)

Country Link
EP (1) EP1931834A1 (en)
GB (1) GB2429983A (en)
WO (1) WO2007028974A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2312075A1 (en) * 2009-10-15 2011-04-20 ArcelorMittal Dudelange S.A. Device for covering and protecting steel joists against fire
GB201007259D0 (en) * 2010-04-30 2010-06-16 Woolstencroft David Fire protection for buildings
NO334530B1 (en) * 2010-12-14 2014-03-31 Beerenberg Corp As A fire-resistant steel structure and detachable coverings for fire protection of steel structures
CN102587527A (en) * 2012-03-14 2012-07-18 宝钢建筑系统集成有限公司 Steel column-coated fire-protection construction method
CN108071193A (en) * 2016-11-18 2018-05-25 天津津赫深科技发展有限公司 A kind of Building technology service steel structure column
IT201900007884A1 (en) * 2019-06-03 2020-12-03 Milano Politecnico SYSTEM FOR IMPROVING THE THERMAL INSULATION CAPACITY OF SHEETS OR PANELS FOR FIRE PROTECTION
GB2604169B (en) * 2021-02-26 2023-10-18 Interact Structural Fire Prot Limited Fire protection system for structual members

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2215638B (en) * 1988-03-22 1991-07-03 Grafochem Limited Method and means for fire retardation
US5404687A (en) * 1991-04-24 1995-04-11 Avco Corporation Intumescent fireproofing panel system
AU663561B2 (en) * 1992-05-20 1995-10-12 Avco Corporation Fireproofing panel attachment system
GB2278083B (en) * 1993-05-22 1997-04-23 Environmental Seals Ltd Fire resistant cladding
GB2328694A (en) * 1997-08-27 1999-03-03 British Steel Plc Fire and heat resistant cladding with steel and intumescent layers
EP1106744A1 (en) * 1999-12-09 2001-06-13 Btg International Limited Fire and heat resistant materials
FR2864131B1 (en) * 2003-12-18 2007-07-20 Alain Antoniazzi DEVICE FOR PROTECTING THE TOP OF A POST.

Non-Patent Citations (1)

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Title
See references of WO2007028974A1 *

Also Published As

Publication number Publication date
GB2429983A (en) 2007-03-14
WO2007028974A1 (en) 2007-03-15
GB0518187D0 (en) 2005-10-12

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