GB2203900A - Supporting electrical cable trays or trunking in a structural partition member - Google Patents

Supporting electrical cable trays or trunking in a structural partition member Download PDF

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Publication number
GB2203900A
GB2203900A GB08704311A GB8704311A GB2203900A GB 2203900 A GB2203900 A GB 2203900A GB 08704311 A GB08704311 A GB 08704311A GB 8704311 A GB8704311 A GB 8704311A GB 2203900 A GB2203900 A GB 2203900A
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GB
United Kingdom
Prior art keywords
aperture
trunking
elongate members
plate
tubular extension
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.)
Pending
Application number
GB08704311A
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GB8704311D0 (en
Inventor
George Alfred Forbes
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB08704311A priority Critical patent/GB2203900A/en
Publication of GB8704311D0 publication Critical patent/GB8704311D0/en
Publication of GB2203900A publication Critical patent/GB2203900A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
    • F16L5/02—Sealing
    • F16L5/04—Sealing to form a firebreak device
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/22—Installations of cables or lines through walls, floors or ceilings, e.g. into buildings

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Indoor Wiring (AREA)
  • Installation Of Indoor Wiring (AREA)

Abstract

Method and apparatus for supporting elongate members e.g. cables (13) passing through an aperture in a fire wall (10), wherein a fire retardant plate (14) is secured to one side of the wall to cover the aperture (11), the plate having an integral tubular extension (17) for closely surrounding the elongate members (13) and flowable fire proofing sealant (18) e.g. silicon or intumescent material being introduced into the tubular extension (17) to form a fire retardant seal. Plates (14) are preferably provided to cover the aperture at both sides of the wall (10). The elongate members may be supported on a tray (12) and the space between the tray and the aperture filled with fibrous packing (19) of carbon or ceramic. If the tray is put in position before the plates, the plates are made in two parts (14, 14A). In an alternative embodiment (Figs 3 and 4) relating to a ship's bulkhead (20), the tubular extensions (25, 26) project outwardly from the bulkhead and are filled with a fire-proofing sealant. <IMAGE>

Description

SUPPORTING ELECTRICAL CABLE TRAYS OR TRUNKING IN A STRUCTURAL PARTITION MEMBER The present invention relates to supporting electrical cable trays or trunki ng passing through partitioning members, in particular wall members, of a building structure, which partitioning members are required to have fire delay characteristics.
Cable carriers, e.g. in the form of metal troughshaped trays or rectangular trunking in which a bundle of cables are located, are of varying dimensions whereby oversize holes are provided in or knocked through wall members to accommodate the passage of such cable carriers therethrough. Building Regulations require that the trays or trunking carrying the cables should be stably maintained in the apertures provided in fire retardant partitioning members and that the structure should be completed to maintain the fire delaying characteristics assigned to the structural member, for example in accordance with B.S. 476 : Part 8.
The expense and quality of the infilling is dependent upon the materials used, which sometimes are only partially suitable for the purpose, and the expertise employed in their assembly. Furthermore there is a need to provide means for supporting cabling trays or trunking passing through apertures in relatively thin partitioning members, e.g. bulkheads in ships, which can delay the passage of fire through the apertures.
The present invention seeks to provide a means of achieving a satisfactory support for cable trays or trunking passing through a structural partitioning member and having satisfactory fire delaying characteristics, with minimum materials use and site expertise.
According to one aspect of the invention, there is provided a method of supporting a cable tray or trunking passing through an aperture in a structural partitioning member, which comprises securing to one or both sides of the structural member a, or a respective, fire retardant plate which covers the end of said aperture at the corresponding side of the structural member, the plate having an aperture dimensioned to closely surround the cable tray or trunking and provided with a tubular extension extending from the plate for closely enclosing a portion of the cable tray or trunking; and providing a fire proofing sealant in the spaces defined between a cable tray and the cables contained therein, and the surrounding walls of the aforesaid tubular extensions of the plates, or between the outer periphery of a cable trunking and the surrounding walls of the aforesaid tubular extensions of the plates. For a relatively thick partitioning member said tubular extension(s) can advantageously be located within the thickness thereof whereas ' for a relatively thin partitioning member the tubular extension(s) would project outwards away from the respective side(s) of the partitioning member.
For a relatively thick, fire retardant, structural member, a method according to the invention may comprise securing to one side of the structural member a fire retardant plate which covers the end of said aperture at that side of the structural member, the plate having an aperture dimensioned to closely surround the cable tray or trunking and provided with a tubular extension extending from the plate into the aperture for closely enclosing a portion of the cable tray or trunking within the aperture; introducing into the aperture from the opposite side of the partitioning member fire retardant packing material to substantially fill the space defined between the cable tray or trunking and the inner surface of said aperture; securing a second plate to said opposite side of said partitioning member to cover the end of said aperture thereat, said second plate having an aperture closely surrounding the cable tray or trunking and having a tubular extension extending into said aperture to closely enclose a portion of the cable tray or trunking; and providing a fire proofing sealant in the spaces defined between a cable tray and the cables contained therein, and the surrounding walls of the aforesaid tubular extensions of the plates, or between the outer periphery of a cable trunking and the surrounding walls of the aforesaid tubular extensions of the plates.
According to another aspect of the invention, there is provided a system for supporting a cable tray or trunks nag passing through an aperture in a structural partitioning member, which system comprises at least one fire retardant plate, e.g. a metallic plate, secured to one, or a respective, side of the structural member to cover the end of the aperture at that side of the structural member, the plate having an aperture dimensioned to closely surround the cable tray or trunking and having a tubular extension extending from the plate to closely enclose a portion of the cable tray or trunking; wherein a fire-proofing sealant is provided in spaces defined between a cable tray and cable contained therein, and the surrounding walls of the aforesaid tubular extension or extensions, or between the outer periphery of a cable trunking and the surrounding wall of the aforesaid tubular extension or extensions.
The invention also provides a fire retardant plate for a system according to the invention, the plate having an aperture therethrough for closely surrounding a cable tray or trucking, and an integral tubular extension extending from one side of the plate and dimensioned to closely enclose a portion of a cable tray or trunking extending in use through said aperture in the plate. For example, said aperture and said extension may have similar rectangular crosssections to receive a rectangular cable trunking or a trough-shaped cable tray.
An embodiment of the invention will now be described by way of example and with reference to the accompanying drawings in which: Figure 1 is a section through a fire retardant wall showing a cable tray supported to pass through an aperture in the wall, in accordance with the present invention; Figure 2 is an elevation from one side of the wall of the cable tray support system; Figure 3 is a perspective view from the front of a second embodiment; and, Figure 4 is a side view of the second embodiment.
Referring to Figs. 1 and 2 of the drawings, a fire resistant wall (10) is formed with an aperture (11) of a suitable size to allow the passage therethrough of a cable tray (12) in which a plurality of cables (13), which may be of different sizes, is carried.
The cable tray must be supported and sealed within the aperture in order to maintain the integrity of the fire delay provided by the wall (10) and also to provide adequate load bearing support for the cable tray, which is in the form of a trough-shaped metal member in which a bundle of cables (13) is disposed.
A rectangular metal facia plate (14) is positioned to cover the end of the aperture (11) at one side of the wall (10) and is fixed thereto by a number of \ nails (15) which, for example, are driven into the concrete wall (10) by a conventional nail gun. The plate (14) is formed with a rectangular aperture (16) dimensioned to closely surround the cable tray (12). The plate (14) is also formed with an integral tubular sleeve portion (17) which is also dimensioned to closely surround the cable tray (12).
Fire resistant fibrous packing material (19), for example mineral, ceramic or carbon filament packing, is introduced into the aperture (11) from the other side of the wall in order to fill the space defined between the cable tray and the outer periphery of the tubular portion (17) of the facia plate (14), and the wall of the aperture (11). A second facia plate (14A) is then secured by nails (15A) to close the opposite end of the aperture (11).
This facia plate (14A) is similarly provided with a tubular sleeve portion (17A) which closely surrounds a section of the cable tray (12).
When the required set of cables (13) are disposed in the cable tray (12) as shown in the drawings, the irregular gaps defined between the cables, the cable carrier and the encompassing tubular portions (17,17A) of the facia plates are then filled to the full depth of those tubular portions with a suitable fire delaying flowable material or mastic (18), for example a silicon or intumescent composition.
In other embodiments of the invention, the cables may be contained within a rectangular cable trunking. In such a system, an adequate spacing between the outer periphery of the trunking and the inner periphery of the tubular portion (17,17A) of the facia plates is defined to enable the flowable fire proofing material to be satisfactorily introduced therebetween to provide a fireproof barrier.
The facia plate (14) may be secured to the wall (10) before the cable tray (12) or trunking is introduced through the aperture (16) in the plate or the facia plate (14) may be threaded on the cable tray (12) which is then passed through the aperture (11) in the wall with the facia plate then being nailed to the wall as aforesaid.
In some applications of the invention, the cable tray or trunking may be positioned to extend through the aperture (11) in advance of infilling of the aperture in accordance with the invention. In such cases, it may be necessary to form the facia plates (14,14A) as two-piece constructions which can then be fitted around the cable tray or trunking during the abovedescribed infilling procedure.
Figures 3 and 4 illustrate a cable tray support system in accordance with the invention for use in connection with a ship's bulkhead or deck head (20).
An aperture is provided in the bulkhead or deck head (20) for the passage therethrough of a cable tray (21) carrying a plurality of cables (22). A pair of metal facia plates (23 and 24) similar to facia plates (14 and 14A) of the first embodiment are secured to respective opposite sides of the bulkhead or deck head (20). However since the thickness of the bulkhead (20) is relatively narrow compared with the fire resistant wall (10) of the first embodiment, the facia plates (23 and 24) are secured with their integral tubular sleeve portions (25 and 26) projecting outwardly away from the respective side of the bulkhead or deck head (20). Silicone or intumescent foam pugging is provided in the portions of the cable tray (21) enclosed within the tubular sleeve portions (25 and 26) to completely fill the spaces defined around the cables (22) disposed therein. Further such material is injected to fill the spaces defined between the outer surfaces of the cable tray (22) and the enclosing walls of the tubular extensions (25 and 26), preferably to the full depth of the tubular sleeves (25 and 26). In this way, a fire resistant barrier is provided across the aperture formed in the bulkhead or deck head (20) for the cable tray (22) or in other applications for a cable trunking, by the metal facia plates (22,23) secured on opposite sides of the bulkhead and by the silicone or intumescent material which seals the free spaces within the tubular sleeve portions (25,26) of the facia plates around the cable tray and the walls of the sleeve portions and around the spaces left in the cable tray around the bundle cables (22) disposed therein, preferably to the full depth of the sleeve portions (25 and 26).

Claims (11)

1. A method for supporting elongate members passing through an aperture in a structural partitioning member, which comprises securing to one or both sides of the structural member a, or a respective, fire retardant plate which covers the end of said aperture at the corresponding side of the structural member, the plate having an aperture dimensioned to closely surround the elongate members and provided with a tubular extension extending from the plate for closely enclosing a portion of the elongate members; and introducing a flowable fire proofing sealant into the spaces defined between the elongate members, and the surrounding walls of the aforesaid tubular extensions of the plates.
2. A method for supporting a trunking carrying elongate members, passing through an aperture in a structural partitioning member, which comprises securing to one or both sides of the structural member a, or a respective, fire retardant plate which covers the end of said aperture at the corresponding side of the structural member, the plate having an aperture dimensioned to closely surround the trunking and provided with a tubular extension extending from the plate for closely enclosing a portion of the trunking; and introducing a flowable fire proofing sealant into the spaces defined between the outer periphery of the cable trunking and the surrounding walls of the aforesaid tubular extension(s) of the plate(s).
3. A method according to Claim 1 or wherein the, or each, tubular extension is located within the thickness of the partitioning member.
4. A method according to Claim 1 or 2 wherein the, or each, tubular extension projects outwardly away from the respective side of the partitioning member.
5. A method according to Claim 3 comprising securing to one side of the structural member a fire retardant plate which covers the end of said aperture at that side of the structural member, the plate having an aperture dimensioned to closely surround said elongate members or said trunking and provided with a tubular extension extending from the plate into the aperture for closely enclosing a portion of the elongate members or trunking within the aperture; introducing into the aperture from the opposite side of the partitioning member fire retardant packing material to substantially fill the space defined between the elongate members or trunking and the inner surface of said aperture; securing a second plate to said opposite side of said partitioning member to cover the end of said aperture thereat, said second plate having an aperture closely surrounding the elongate members or trunking and having a tubular extension extending into said aperture to closely enclose a portion of the elongate members or trunking within the aperture; and providing a fire proofing sealant in the spaces defined between the elongate members and the surrounding walls of the aforesaid tubular extensions of the plates, or between the outer periphery of the cable trunking and the surrounding walls of the aforesaid tubular extensions of the plates.
6. A system for supporting elongate members passing through an aperture in a structural partitioning member, which system comprises at least one fire retardant plate secured to one, or a respective, side of the structural member to cover the end of the aperture at that side of the structural member, the plate having an aperture dimensioned to closely surround the elongate members and having a tubular extension extending from the plate to closely enclose a portion of the elongate members; a flowable fire-proofing sealant having been introduced into spaces defined between the elongate members and the surrounding walls of the aforesaid tubular extension or extensions.
7. A system for supporting a trunking carrying elongate members, passing through an aperture in a structural partitioning member, which system comprises at least one fire retardant plate secured to one, or a respective, side of the structural member to cover the end of the aperture at that side of the structural member, the plate having an aperture dimensioned to closely surround the trunking and having a tubular extension from the plate to closely enclose a portion of the trunking; a flowable fire-proofing sealant having been introduced into spaces defined between the outer periphery of the trunking and the surrounding wall of the aforesaid tubular extension or extensions.
8. A system as claimed in Claim 6 or Claim 7 wherein the, or each, tubular extension is located within the thickness of the partitioning member.
9. A system as claimed in Claim 6 or Claim 7 wherein the, or each, tubular extension projects outwardly away from the respective side of the partitioning member.
10. A method for supporting elongate members or a trunking containing elongate members, passing through an aperture in a structural partitioning member, the method being substantially as hereinbefore described with reference to Figures 1 and 2, or Figures 3 and 4 of the accompanying drawings.
11. A system for supporting elongate members or a trunking containing elongate members, passing through an aperture in a structural partitioning member, the system being substantially as hereinbefore described with reference to, and as illustrated in, Figures 1 and 2 or Figures 3 and 4 of the accompanying drawings.
GB08704311A 1987-02-24 1987-02-24 Supporting electrical cable trays or trunking in a structural partition member Pending GB2203900A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08704311A GB2203900A (en) 1987-02-24 1987-02-24 Supporting electrical cable trays or trunking in a structural partition member

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08704311A GB2203900A (en) 1987-02-24 1987-02-24 Supporting electrical cable trays or trunking in a structural partition member

Publications (2)

Publication Number Publication Date
GB8704311D0 GB8704311D0 (en) 1987-04-01
GB2203900A true GB2203900A (en) 1988-10-26

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GB08704311A Pending GB2203900A (en) 1987-02-24 1987-02-24 Supporting electrical cable trays or trunking in a structural partition member

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2247997A (en) * 1990-09-15 1992-03-18 Environmental Seals Ltd Improvements in and relating to fire seals
WO1997008485A1 (en) * 1995-08-23 1997-03-06 Terje Andersen Fire resistant bushing for cables, pipes and channels
EP0937931A2 (en) * 1998-02-19 1999-08-25 IMPRESA MARINONI srl Sealing system for feedthrough openings for pipelines and/or electric cables through bulkheads on ships
US6362420B1 (en) * 2000-01-21 2002-03-26 Planet Wattohm High-capacity multicompartment electrical wiring trunking
WO2002070962A1 (en) * 2001-03-01 2002-09-12 Saint-Gobain Isover Ab Ventilation duct construction and method of providing a fire protected penetration of a ventilation duct in a wall
US6629706B2 (en) 2001-03-01 2003-10-07 Saint-Gobain Isover Ab Ventilation duct construction and method
US6848227B2 (en) * 2002-07-24 2005-02-01 Royal Group Technologies Limited Intumescent floor opening frame
WO2006040124A1 (en) * 2004-10-12 2006-04-20 Deutsche Rockwool Mineralwoll Gmbh + Co. Ohg Device for providing a sealing covering for a train of pipes and/or ducts
EP2570157A3 (en) * 2011-09-19 2015-01-14 HILTI Aktiengesellschaft Fire retardant element
FR3017920A1 (en) * 2014-02-24 2015-08-28 Grtgaz SHUTTER FOR OPENING A SAIL
IT201700045175A1 (en) * 2017-04-26 2018-10-26 Electrix Distribuzione Srl FIRE DISABLING DEVICE FOR OPENINGS FOR THE PASSAGE OF PIPES, CONDUCTORS AND ELECTRIC CABLES THROUGH NAVAL DIVISIONS

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981001041A1 (en) * 1979-10-13 1981-04-16 B Luechtrath Transportable conduit section
US4334729A (en) * 1980-02-11 1982-06-15 Kortech Engineering, Inc. Penetrator assembly
US4419535A (en) * 1981-07-31 1983-12-06 Hara Robert J O Multi-cable conduit for floors and walls
GB2140114A (en) * 1983-05-20 1984-11-21 Werner Hauff Feed-through for cables and pipes
EP0146193A1 (en) * 1983-12-15 1985-06-26 Johannes Alfred Beele Installation for fire protection
GB2156169A (en) * 1984-03-23 1985-10-02 Lyckeaborgs Bruk Ab Radiation protective device for the lead-through of cables
GB2161655A (en) * 1984-07-07 1986-01-15 Tarmac Construction Ltd Protector means for a cable

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981001041A1 (en) * 1979-10-13 1981-04-16 B Luechtrath Transportable conduit section
EP0027276A2 (en) * 1979-10-13 1981-04-22 Bern Lüchtrath Transportable conduit section
US4334729A (en) * 1980-02-11 1982-06-15 Kortech Engineering, Inc. Penetrator assembly
US4419535A (en) * 1981-07-31 1983-12-06 Hara Robert J O Multi-cable conduit for floors and walls
GB2140114A (en) * 1983-05-20 1984-11-21 Werner Hauff Feed-through for cables and pipes
EP0146193A1 (en) * 1983-12-15 1985-06-26 Johannes Alfred Beele Installation for fire protection
GB2156169A (en) * 1984-03-23 1985-10-02 Lyckeaborgs Bruk Ab Radiation protective device for the lead-through of cables
GB2161655A (en) * 1984-07-07 1986-01-15 Tarmac Construction Ltd Protector means for a cable

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NOTE: WO A 8101041 AND EP A 0027276 ARE EQUIVALENT; *

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2247997A (en) * 1990-09-15 1992-03-18 Environmental Seals Ltd Improvements in and relating to fire seals
GB2247997B (en) * 1990-09-15 1994-09-21 Environmental Seals Ltd Improvements in and relating to fire proofed conduits and conduit fittings for electrical cabling
WO1997008485A1 (en) * 1995-08-23 1997-03-06 Terje Andersen Fire resistant bushing for cables, pipes and channels
US6141915A (en) * 1995-08-23 2000-11-07 Andersen; Terje Fire resistant bushing for cables, pipes and channels
EP0937931A2 (en) * 1998-02-19 1999-08-25 IMPRESA MARINONI srl Sealing system for feedthrough openings for pipelines and/or electric cables through bulkheads on ships
EP0937931A3 (en) * 1998-02-19 2000-02-23 IMPRESA MARINONI srl Sealing system for feedthrough openings for pipelines and/or electric cables through bulkheads on ships
US6362420B1 (en) * 2000-01-21 2002-03-26 Planet Wattohm High-capacity multicompartment electrical wiring trunking
US6629706B2 (en) 2001-03-01 2003-10-07 Saint-Gobain Isover Ab Ventilation duct construction and method
WO2002070962A1 (en) * 2001-03-01 2002-09-12 Saint-Gobain Isover Ab Ventilation duct construction and method of providing a fire protected penetration of a ventilation duct in a wall
US6848227B2 (en) * 2002-07-24 2005-02-01 Royal Group Technologies Limited Intumescent floor opening frame
WO2006040124A1 (en) * 2004-10-12 2006-04-20 Deutsche Rockwool Mineralwoll Gmbh + Co. Ohg Device for providing a sealing covering for a train of pipes and/or ducts
DE102005042580B4 (en) * 2004-10-12 2009-02-05 Deutsche Rockwool Mineralwoll Gmbh + Co Ohg Device for the sealing enclosure of pipe and / or pipe strands
NO336976B1 (en) * 2004-10-12 2015-12-07 Rockwool Mineralwolle Device for insulating mounting of pipe and / or wiring strings
EP2570157A3 (en) * 2011-09-19 2015-01-14 HILTI Aktiengesellschaft Fire retardant element
FR3017920A1 (en) * 2014-02-24 2015-08-28 Grtgaz SHUTTER FOR OPENING A SAIL
IT201700045175A1 (en) * 2017-04-26 2018-10-26 Electrix Distribuzione Srl FIRE DISABLING DEVICE FOR OPENINGS FOR THE PASSAGE OF PIPES, CONDUCTORS AND ELECTRIC CABLES THROUGH NAVAL DIVISIONS

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