GB2300428A - Steel mesh reinforced g.r.p. underground cable chamber - Google Patents

Steel mesh reinforced g.r.p. underground cable chamber Download PDF

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Publication number
GB2300428A
GB2300428A GB9509172A GB9509172A GB2300428A GB 2300428 A GB2300428 A GB 2300428A GB 9509172 A GB9509172 A GB 9509172A GB 9509172 A GB9509172 A GB 9509172A GB 2300428 A GB2300428 A GB 2300428A
Authority
GB
United Kingdom
Prior art keywords
chamber
steel mesh
steel
incorporation
underground cable
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Withdrawn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
GB9509172A
Other versions
GB9509172D0 (en
Inventor
Trudi Giscombe
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.)
CROSSBOW GRP
Original Assignee
CROSSBOW GRP
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 CROSSBOW GRP filed Critical CROSSBOW GRP
Priority to GB9509172A priority Critical patent/GB2300428A/en
Publication of GB9509172D0 publication Critical patent/GB9509172D0/en
Publication of GB2300428A publication Critical patent/GB2300428A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/86—Incorporated in coherent impregnated reinforcing layers, e.g. by winding
    • B29C70/865—Incorporated in coherent impregnated reinforcing layers, e.g. by winding completely encapsulated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/02—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising combinations of reinforcements, e.g. non-specified reinforcements, fibrous reinforcing inserts and fillers, e.g. particulate fillers, incorporated in matrix material, forming one or more layers and with or without non-reinforced or non-filled layers
    • B29C70/021—Combinations of fibrous reinforcement and non-fibrous material
    • B29C70/023—Combinations of fibrous reinforcement and non-fibrous material with reinforcing inserts
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • 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
    • H02G9/00—Installations of electric cables or lines in or on the ground or water
    • H02G9/10—Installations of electric cables or lines in or on the ground or water in cable chambers, e.g. in manhole or in handhole
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/20—Inserts
    • B29K2105/206—Meshes, lattices or nets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
    • B29K2705/08—Transition metals
    • B29K2705/12—Iron
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/10—Building elements, e.g. bricks, blocks, tiles, panels, posts, beams

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

An underground cable chamber is made of glass fibre reinforced resin and additionally includes a steel mesh which is incorporated while the material is still wet. This allows for the chamber to be drilled for duct and pipe laying with several holes close together without weakening the chamber. The incorporation of the steel mesh also gives the chamber extra load resistance against overhead traffic and side bulging.

Description

STEEL MESH REINFORCED G.R.P. UNDERGROUND CABLE CHAMBER THIS INVENTION RELATES TO THE CONSTRUCTION METHOD OF G. R. P. UNDERGROUND CABLE CHAMBERS BY THE INCORPORATON OF A SPECIALLY DESIGNED STEEL MESH.
GRP UNDERGROUND CABLE CHAMBERS HAVE BEEN USED IN THE TELECOIXUNICATIONS FIELD FOR A NUMBER OF YEARS, THE BASIC LAY UP OF THE CHAMBERS CONSISTS OF FIBREGLASS XATT AND RESIN A BASIC LAMINATION PROCESS.
HOWEVER ADDED STRENGTH AND OVERALL GRID EFFECT CAUSED BY THE INCORPORATION OF THE STEEL MESH WILL BE OF GREAT ADVANTAGE TO THE CHAMBERS AS DRILLING BY DUCT AND CABLE LAYING CAN GREATLY WEAKEN THE STRENGTH OF THE CHAMBER.
THE NEV CONSTRUCTION METHOD WILL BE GLASSFIBRE MATT AND RESIN VHICH WILL NOW BE REINFORCED WITH A SPECIALLY DESIGNED STEEL MESH WHICH HAS BEEN INCORPORATED INTO THE LAMINATION PROCESS. THIS THEN PRODUCES A GRID EFFECT ENABLING SEVERAL DUCT HOLES TO BE DRILLED CLOSE TOGEATHER WITHOUT WEAKENING THE CHAMBERS OVERALL STRENGTH.
FIGURE 1. SHOWS THE INNER PROTECTIVE WATER RESISTANT GEL COAT LAYER, FOLLOWED BY 2 X 600g GLASSFIBRE MATT IMPREGNATED WITH RESIN.
FIGURE 2. SHOWS THE INCORPORATION OF THE PRE XANUFACTURED STEEL MESH VHICH IS INBEDDED INTO THE VET KATT ON ALL SIDES FOLLOVED BY A FUTHER LAYER OF 600g GLASSFIBRE MATT AND WOVEN ROVED TO ALL FOUR OUTER CORNERS VHERE STEEL MEETS.
FIGURE 3. SHOWS THE COMPLETED BOX AND THE GRID EFFECT CAUSED BY THE STEEL MESH.

Claims (1)

  1. CLAIM
    (1)THE INCORPORATION OF THE STEEL MESS INTO THE GLASS FIBRE MATT WHEN WET PRODUCESS THE EFFECT OF INDIVIDUALLY LAMINATED SOUARES, THIS INTERN GIVES OVERAL STRENGTH TO THE CHAMBER (2) THE STEEL MESS IS DESIGNED TO PRODUCE A GRID EFFECT IN THE CHAMBER WHICH IS COMPATIBLE VITH THE DUCT PIPE WHICH IS TO BE FITTED IN TO THE CHAMBER BY DRILLING.
    (3) THE SQUARES IN THE STEEL MESH WtLL ALLOW FOR THE CHAXBER TO BE DRILLED WITH SEVERL DUCT HOLES CLOSE TOGEATHER WITH OUT LOSS OF ITS OVERALL STRENGTH.
    (4) THE INCORPORATION OF THE STEEL MESH IN THE CABLE CHAMBER GIVES EXTRA LOAD RESISTANCE WHICH INCLUDES DOWN PRESSURE FROM OVER HEAD TRAFFIC, AND MORE RESISTANCE TO SIDE BULGING. ALLOWING THE BOX TO KEEP TO ITS ORIGINAL SHAPE AFTER BEING BACK FILLED WITH CONCRETE.
    OR RUBBLE.
GB9509172A 1995-05-05 1995-05-05 Steel mesh reinforced g.r.p. underground cable chamber Withdrawn GB2300428A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9509172A GB2300428A (en) 1995-05-05 1995-05-05 Steel mesh reinforced g.r.p. underground cable chamber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9509172A GB2300428A (en) 1995-05-05 1995-05-05 Steel mesh reinforced g.r.p. underground cable chamber

Publications (2)

Publication Number Publication Date
GB9509172D0 GB9509172D0 (en) 1995-06-28
GB2300428A true GB2300428A (en) 1996-11-06

Family

ID=10774047

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9509172A Withdrawn GB2300428A (en) 1995-05-05 1995-05-05 Steel mesh reinforced g.r.p. underground cable chamber

Country Status (1)

Country Link
GB (1) GB2300428A (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB880103A (en) * 1957-10-10 1961-10-18 Continental Copper And Steel I Plastic boats and methods of manufacturing same
GB1189991A (en) * 1966-04-21 1970-04-29 Vulcan Plastics Ltd Improvements in or relating to the Manufacturing of Facing Sheets for Use in Buildings
GB1221614A (en) * 1968-03-08 1971-02-03 Bekaert Sa Nv Improvements in or relating to composite panels
GB1301204A (en) * 1970-01-26 1972-12-29 Heinrich Robert Pawlicki A shapable and dimensionally stable element for reinforcing synthetic resins
US3968601A (en) * 1973-06-25 1976-07-13 Brown Clayton S Handhole to receive and locate connections of underground secondary electrical power cable terminations
US3974599A (en) * 1971-12-08 1976-08-17 Indian Head Inc. Underground reinforced plastic enclosure
US4776138A (en) * 1987-02-09 1988-10-11 Sumner Cyril R Buried vault for underground optical fiber systems
EP0442840A1 (en) * 1990-01-15 1991-08-21 Angel Garcia Ballesteros Apparatus for constructing manholes

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB880103A (en) * 1957-10-10 1961-10-18 Continental Copper And Steel I Plastic boats and methods of manufacturing same
GB1189991A (en) * 1966-04-21 1970-04-29 Vulcan Plastics Ltd Improvements in or relating to the Manufacturing of Facing Sheets for Use in Buildings
GB1221614A (en) * 1968-03-08 1971-02-03 Bekaert Sa Nv Improvements in or relating to composite panels
GB1301204A (en) * 1970-01-26 1972-12-29 Heinrich Robert Pawlicki A shapable and dimensionally stable element for reinforcing synthetic resins
US3974599A (en) * 1971-12-08 1976-08-17 Indian Head Inc. Underground reinforced plastic enclosure
US3968601A (en) * 1973-06-25 1976-07-13 Brown Clayton S Handhole to receive and locate connections of underground secondary electrical power cable terminations
US4776138A (en) * 1987-02-09 1988-10-11 Sumner Cyril R Buried vault for underground optical fiber systems
EP0442840A1 (en) * 1990-01-15 1991-08-21 Angel Garcia Ballesteros Apparatus for constructing manholes

Also Published As

Publication number Publication date
GB9509172D0 (en) 1995-06-28

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