EP1567735B1 - Fabric column and pad concrete form - Google Patents

Fabric column and pad concrete form Download PDF

Info

Publication number
EP1567735B1
EP1567735B1 EP03758384A EP03758384A EP1567735B1 EP 1567735 B1 EP1567735 B1 EP 1567735B1 EP 03758384 A EP03758384 A EP 03758384A EP 03758384 A EP03758384 A EP 03758384A EP 1567735 B1 EP1567735 B1 EP 1567735B1
Authority
EP
European Patent Office
Prior art keywords
flexible sheet
flexible
sheet element
longitudinal
forming tube
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
EP03758384A
Other languages
German (de)
French (fr)
Other versions
EP1567735A1 (en
Inventor
Richard Fearn
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.)
Fearn Richard Neil
Original Assignee
Fearn Richard Neil
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 Fearn Richard Neil filed Critical Fearn Richard Neil
Publication of EP1567735A1 publication Critical patent/EP1567735A1/en
Application granted granted Critical
Publication of EP1567735B1 publication Critical patent/EP1567735B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
    • E04G13/02—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for columns or like pillars; Special tying or clamping means therefor
    • E04G13/021—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for columns or like pillars; Special tying or clamping means therefor for circular columns

Definitions

  • This invention relates generally to a concrete column and pad forming tube made of a fabric like material for receiving a flowable and settable material poured into the interior of the tube so as to form a round column or pad upon the hardening of the material, and which is characterized by folding flat for storage and shipping, while at the same time being able to be accurately positioned on the job site.
  • Concrete column forming tubes are conventionally formed of multiple layers of paper, which are spirally wound around a mandrel and with a wall thickness of about 6 mm so that the tube is rigid and maintains its circular cross section. Because of the large diameters and lengths, transportation and storage is very expensive.
  • the patent contemplates an alternative for vertically supporting the tube by cutting a series of notches in the upper end, which are folded outwardly over a circular supporting framework. Again, this would require additional bracing and labor, obviating the benefits of the collapsible form.
  • DE-U-9200496 discloses a method of forming concrete columns using mouldable fibre plates.
  • the tube for the concrete columns is formed by joining adjacent plates together. The ends of two adjacent plates are joined to form a longitudinal tab to be supported by extra inserts.
  • Such forming tubes may be fabricated from fabric with one or more longitudinal tabs running the full length of the tube. Each tab is sandwiched between two vertical support members, which are used to properly locate the tube on the job site, before filling with concrete.
  • a prefabricated flexible forming tube for a concrete column or pad comprising: at least one flexible sheet element of specified width characterized in that the flexible sheet element is formed from woven fabric, and one longitudinal edge of said flexible sheet element is arranged in overlapping relationship with either:
  • This invention also contemplates the use of a woven fabric of sufficient strength that bulging will not occur, while at the same time being able to fold flat.
  • the fabric is joined into a tube by welding, sewing or zippering the edges together.
  • the fabric based forming tube is collapsed and folded into a small package to facilitate its storage and transportation.
  • the contractor cuts off the exact length of tube required for the column.
  • the fabric tab is nailed or screwed between two vertical support members probably made from 75mm by 200mm lumber, and the assembly is placed vertically into position and braced. Concrete is then poured into the fabric tube so that it takes a cylindrical configuration across from the two vertical support members. After the concrete is hardened, the fabric tube can be left in place, or removed at the weld, zipper, or cut with a sharp knife.
  • FIGURE 1 is a perspective view of a preferred embodiment of a concrete forming tube used in accordance with the present invention as a concrete column and which is indicated generally at 10.
  • the flexible sheet form element, or fabric 14 is joined to form a tube with the outside longitudinal edge forming a longitudinal tab 16.
  • the longitudinal tab 16 can be seen at the top, sandwiched between the two vertical support members 18, 20.
  • the vertical support members are braced with suitable lumber 22, and stakes 30 are used to support the lower end of each brace 22.
  • FIGURE 2 is a perspective view of a preferred embodiment of a concrete forming tube 12 used in accordance with the present invention as a concrete footing pad and which is indicated generally at 28.
  • Stakes 30 are driven into the ground just outside the circumference of the proposed circular pad 28.
  • the desired length of fabric tube 42 is cut with a utility knife 52 from the longer length 40, and the longitudinal tabs 16 are stapled 34 to each stake 30 to support the tube in the correct position.
  • Larger diameter pads could have a multiplicity of longitudinal tabs and supporting stakes. Pads could range in diameter from 450 mm up to 3000 mm, with the fabric tube welded or sewn together to achieve these diameters.
  • Concrete 26 is placed inside the tube, and trowelled flat to the top of the fabric tube 12.
  • FIGURE 3 is a cross section of the fabric tube 12 expanded as if by the concrete to show manufacturing details.
  • Three flexible sheet form elements 14 of indefinite length and a specific width are welded or sewn together at points 36 to form the correct diameter for the column or pad. Welding is the preferable method of joining as sewing can weaken the joint and create small holes for the concrete to leak out.
  • the longitudinal tabs run the full length of the tube, with a width 38 running past the joining width 36. This longitudinal tab is sandwiched between the two vertical support members 18, 20 to support the tube in the vertical position for proper location during the concrete pour.
  • the width of the longitudinal tab 38 is usually the same as the width of the vertical support members 18, 20 to ensure proper positioning of the tab.
  • the manufacturing process must accurately align and weld the fabric so that the correct diameter of the inflated tube is achieved. As the diameter of the tube increases, the hoop tension of the fabric will increase because of the increased concrete pressure. Therefore the thickness of the fabric and the width of the welded or sewn joint must be correspondingly increased.
  • a zipper 44 is shown in FIGURE 3 .
  • the zipper would be used where it is desirable to recycle the tube form to lower forming costs.
  • the zipper would also have applications where it is needed to place a concrete column around an existing steel column, for example to protect a steel column in a warehouse from damage.
  • the fabric overlap 46 protects the zipper from concrete damage when filling with concrete.
  • the zipper would be either welded or sewn to the fabric.
  • Velcro or sticky tape 48 may be required to ensure the overlap stays flat when filling to protect the zipper from concrete damage.
  • the flexible sheet form element 14 is typically made from a woven polyethylene or polypropylene material, with about 12 tapes per inch in the warp and weft direction.
  • the tapes are high density to achieve strength, and a low-density coating on either or both sides of the scrim could be added to ensure the concrete does not leak through the fabric. It would also be possible to increase the fabric strength by adding warp and weft elements made of carbon fiber, for example, which, when left in place would provide external reinforcing to the concrete.
  • FIGURE 4 is an isometric view showing the fabric tube 12 being cut to the length 42 of a desired column 10, and the longitudinal tab 16 being positioned and stapled 34 to the first vertical support member 18.
  • the tube shape and fabric thickness would only allow the tube to be wound on very large diameter rolls as otherwise the fabric will wrinkle excessively. Therefore packaging of the tube would be on very large rolls and folded, or festooned 40.
  • FIGURE 5 is an isometric view showing the second vertical support member 20 being attached to the first member 18 using nails or screws 50.
  • the two vertical support members provide support to the longitudinal tab and therefore to the fabric tube during the pouring of concrete.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

A lightweight and flexible concrete forming tube for columns and pads is disclosed, wherein the tube has a very thin wall of high strength fabric and a longitudinal fabric tab running the length of the tube. The tab is sandwiched between two vertical support members made of lumber. The vertical support members and attached fabric tube are then accurately located and braced. As the interior of the tube is filled with concrete, the hydrostatic pressure causes the tube to form a cylindrical shape, thereby accurately aligning itself across from the vertical support members. The use of fabric prevents the problems associated with using cardboard forms, which weaken when exposed to moisture.

Description

    FIELD OF THE INVENTION
  • This invention relates generally to a concrete column and pad forming tube made of a fabric like material for receiving a flowable and settable material poured into the interior of the tube so as to form a round column or pad upon the hardening of the material, and which is characterized by folding flat for storage and shipping, while at the same time being able to be accurately positioned on the job site.
    • BACKGROUND OF THE INVENTION
  • Concrete column forming tubes are conventionally formed of multiple layers of paper, which are spirally wound around a mandrel and with a wall thickness of about 6 mm so that the tube is rigid and maintains its circular cross section. Because of the large diameters and lengths, transportation and storage is very expensive.
  • In an effort to overcome these problems, it was proposed in US Patent Number 5,376,316 to have extremely thin and flexible paper walls, which would render the tube collapsible into a flat form so as to avoid the high transportation and storage expenses of the rigid cardboard tubes. While the use of the thin walls did make the tube collapsible, the following problems resulted: First, there was no means of holding the tube in position so that when filled with concrete, the column was correctly located. The patent contemplated an exterior framework so as to hold the tube correctly, but this would add considerably to the expense. Second, in order for the tube to fold flat for shipping, the paper layers would have to be very thin, and this thinness led to bulging, and possible form failure, particularly at the bottom of the column where the pressures were highest. Again, this would require reinforcement on the outside, defeating the purpose of the collapsible tube form. Third, the patent contemplates an alternative for vertically supporting the tube by cutting a series of notches in the upper end, which are folded outwardly over a circular supporting framework. Again, this would require additional bracing and labor, obviating the benefits of the collapsible form.
  • DE-U-9200496 discloses a method of forming concrete columns using mouldable fibre plates. The tube for the concrete columns is formed by joining adjacent plates together. The ends of two adjacent plates are joined to form a longitudinal tab to be supported by extra inserts.
    • OBJECT AND SUMMARY OF THE INVENTION
  • Accordingly, it is the object of this invention to provide an improved collapsible tube form that overcomes the problems set forth above.
  • The above and other objects and advantages of the present invention are achieved by the discovery that such forming tubes may be fabricated from fabric with one or more longitudinal tabs running the full length of the tube. Each tab is sandwiched between two vertical support members, which are used to properly locate the tube on the job site, before filling with concrete.
  • According to the invention there is provided a prefabricated flexible forming tube for a concrete column or pad comprising: at least one flexible sheet element of specified width characterized in that the flexible sheet element is formed from woven fabric, and one longitudinal edge of said flexible sheet element is arranged in overlapping relationship with either:
    • i) an opposing longitudinal edge of the same flexible sheet element whereby an outside surface of said flexible sheet element adjacent one of said longitudinal edges is fixed to an inside surface of said flexible sheet element to form a joint and so create said flexible forming tube and a longitudinal tab is formed from said flexible sheet element between another of said longitudinal edges and said joint; or
    • ii) a longitudinal edge of another said flexible sheet element whereby an outside surface adjacent to the longitudinal edge of one of said flexible sheet elements is fixed to an inside surface of the other of said flexible sheet element to form a joint and a longitudinal tab is formed from said other flexible sheet element between the joint and said longitudinal edge of said other flexible sheet element, such that said joined flexible sheet elements create at least a portion of said flexible forming tube, so that the multiplicity of joined flexible sheet form elements forms a specific diameter tube with a multiplieity of longitudinal tabs
  • According to the invention there is also provided a method of constructing a concrete column comprising the steps of:
    1. 1) forming a prefabricated flexible forming tube for said concrete column characterized by the steps of:
      1. a) providing at least one flexible sheet element of indefinite length and specified width, formed from woven fabric, said flexible sheet element having a longitudinal edge;
      2. b) arranging said longitudinal edge in overlapping relationship with either:
        1. i) an opposing longitudinal edge of the same flexible sheet element; fixing an outside surface of said flexible sheet element adjacent one of said longitudinal edges to an inside surface of said flexible sheet element to form a join and thereby create said flexible forming tube having indefinite length and a specific diameter; said flexible forming tube having a longitudinal tab formed from said flexible sheet element between another of said longitudinal edges and said joint; or
        2. ii) a longitudinal edge of another said flexible sheet element; fixing an outside surface of one of said flexible sheet elements adjacent to a longitudinal edge of said flexible sheet element to an inside surface of the other said flexible sheet element to form a joint and thereby create at least a portion of a flexible forming tube of indefinite length, said at least a portion of said flexible forming tube having a longitudinal tab formed from the other said flexible sheet element between said joint and said longitudinal edge of the other said flexible sheet element, so that the multiplicity of joined flexible sheet form elements forms a specific diameter tube with a multiplicity of longitudinal tabs ; said method further including the steps of:
    2. 2) cutting off a specified length of said prefabricated flexible forming tube (12), said specified length being equal to the desired height for said concrete column (26);
    3. 3) sandwiching said longitudinal tab (16) between a pair of vertical support members (18, 20);
    4. 4) positioning and bracing said vertical support members (18, 20) with bracing members (22, 30), so that said flexible forming tube (12) is located in a position where said concrete column (26) is to be constructed;
    5. 5) supplying a flowable and settable foundation material (26) to substantially fill space within said flexible forming tube (12), to form said concrete column (26).
  • According to the invention there is further provided a method of constructing a concrete pad comprising the steps of:
    1. 1) forming a prefabricated flexible forming tube for said concrete pad characterized by the steps of:
      1. a) providing at least one flexible sheet element of indefinite length and specified width, formed from woven fabric, said flexible sheet element having a longitudinal edge;
      2. b) arranging said longitudinal edge in overlapping relationship with either:
        1. i) an opposing longitudinal edge of the same flexible sheet element; fixing an outside surface of said flexible sheet element adjacent one of said longitudinal edges to an inside surface of said flexible sheet element to form a joint and thereby create said flexible forming tube having indefinite length and a specific diameter; said flexible forming tube having a longitudinal tab formed from said flexible sheet element between another of said longitudinal edges and said joint; or
        2. ii) a longitudinal edge of another said flexible sheet element; fixing an outside surface of one of said flexible sheet elements adjacent to a longitudinal edge of said flexible sheet element to an inside surface of the other said flexible sheet element to form a joint and thereby create at least a portion of said flexible forming tube of indefinite length, said at least a portion of said flexible forming tube having a longitudinal tab formed from the other said flexible sheet element between said joint and said longitudinal edge of the other said flexible sheet element, so that the multiplicity of joined flexible sheet form elements forms a specific diameter tube with a multiplicity of longitudinal tabs, said method further including the steps of:
    2. 2) cutting off a specified length of said prefabricated flexible forming tube (12), said specified length being equal to the desired height for said concrete pad (26);
    3. 3) positioning a stake (30) around a desired location for said concrete pad (26);
    4. 4) attaching (34) said longitudinal tab (16) to said stake (30) to position said flexible forming tube (12) in said desired location;
    5. 5) supplying a flowable and settable foundation material (26) to substantially fill space within said flexible forming tube (12), to form said concrete pad (26).
  • This invention also contemplates the use of a woven fabric of sufficient strength that bulging will not occur, while at the same time being able to fold flat. The fabric is joined into a tube by welding, sewing or zippering the edges together.
  • In a preferred embodiment, the fabric based forming tube is collapsed and folded into a small package to facilitate its storage and transportation. On the jobsite, the contractor cuts off the exact length of tube required for the column. The fabric tab is nailed or screwed between two vertical support members probably made from 75mm by 200mm lumber, and the assembly is placed vertically into position and braced. Concrete is then poured into the fabric tube so that it takes a cylindrical configuration across from the two vertical support members. After the concrete is hardened, the fabric tube can be left in place, or removed at the weld, zipper, or cut with a sharp knife.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • While some of the advantages of the present invention have been set forth above, other advantages will become apparent from the description of the preferred embodiment of this invention when taken in conjunction with the accompanying drawings, in which:
    • FIGURE 1 a perspective view of the concrete forming tube used to form a column with a single longitudinal tab;
    • FIGURE 2 is a perspective view of the concrete forming tube used to form a pad with multiple longitudinal tabs;
    • FIGURE 3 is a vertical cross section of the tube when expanded with concrete showing two longitudinal tabs, one zipper to enable the form to be reused, and three flexible sheet form elements welded or sewn together;
    • FIGURE 4 is a perspective view showing the length of tube being cut from a larger package, and the longitudinal tab being stapled to the first vertical support member;
    • FIGURE 5 is a perspective view showing the second vertical support member being nailed or screwed to the first vertical support member, thereby sandwiching the vertical support tab.
    DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
  • FIGURE 1 is a perspective view of a preferred embodiment of a concrete forming tube used in accordance with the present invention as a concrete column and which is indicated generally at 10. The flexible sheet form element, or fabric 14 is joined to form a tube with the outside longitudinal edge forming a longitudinal tab 16. The longitudinal tab 16 can be seen at the top, sandwiched between the two vertical support members 18, 20. The vertical support members are braced with suitable lumber 22, and stakes 30 are used to support the lower end of each brace 22.
  • In this embodiment, there is only one longitudinal tab 16 on the fabric tube 12, with the vertical support members and bracing occurring on one side of the tube only. The tube, when filled with concrete 26 will form a cylinder, and center itself directly across
    from the two vertical support members. Steel reinforcing 24 can be installed in the fabric tube after the form assembly 10 has been set up; or the reinforcing 24 installed first, and the fabric tube 12 slid over the steel.
  • FIGURE 2 is a perspective view of a preferred embodiment of a concrete forming tube 12 used in accordance with the present invention as a concrete footing pad and which is indicated generally at 28. Stakes 30 are driven into the ground just outside the circumference of the proposed circular pad 28. The desired length of fabric tube 42 is cut with a utility knife 52 from the longer length 40, and the longitudinal tabs 16 are stapled 34 to each stake 30 to support the tube in the correct position. Larger diameter pads could have a multiplicity of longitudinal tabs and supporting stakes. Pads could range in diameter from 450 mm up to 3000 mm, with the fabric tube welded or sewn together to achieve these diameters. Concrete 26 is placed inside the tube, and trowelled flat to the top of the fabric tube 12.
  • FIGURE 3 is a cross section of the fabric tube 12 expanded as if by the concrete to show manufacturing details. Three flexible sheet form elements 14 of indefinite length and a specific width are welded or sewn together at points 36 to form the correct diameter for the column or pad. Welding is the preferable method of joining as sewing can weaken the joint and create small holes for the concrete to leak out. The longitudinal tabs run the full length of the tube, with a width 38 running past the joining width 36. This longitudinal tab is sandwiched between the two vertical support members 18, 20 to support the tube in the vertical position for proper location during the concrete pour. The width of the longitudinal tab 38 is usually the same as the width of the vertical support members 18, 20 to ensure proper positioning of the tab.
  • The manufacturing process must accurately align and weld the fabric so that the correct diameter of the inflated tube is achieved. As the diameter of the tube increases, the hoop tension of the fabric will increase because of the increased concrete pressure. Therefore the thickness of the fabric and the width of the welded or sewn joint must be correspondingly increased.
  • A zipper 44 is shown in FIGURE 3 . The zipper would be used where it is desirable to recycle the tube form to lower forming costs. The zipper would also have applications where it is needed to place a concrete column around an existing steel column, for example to protect a steel column in a warehouse from damage. The fabric overlap 46 protects the zipper from concrete damage when filling with concrete. The zipper would be either welded or sewn to the fabric. Velcro or sticky tape 48 may be required to ensure the overlap stays flat when filling to protect the zipper from concrete damage.
  • The flexible sheet form element 14 is typically made from a woven polyethylene or polypropylene material, with about 12 tapes per inch in the warp and weft direction. The tapes are high density to achieve strength, and a low-density coating on either or both sides of the scrim could be added to ensure the concrete does not leak through the fabric. It would also be possible to increase the fabric strength by adding warp and weft elements made of carbon fiber, for example, which, when left in place would provide external reinforcing to the concrete.
  • FIGURE 4 is an isometric view showing the fabric tube 12 being cut to the length 42 of a desired column 10, and the longitudinal tab 16 being positioned and stapled 34 to the first vertical support member 18. The tube shape and fabric thickness would only allow the tube to be wound on very large diameter rolls as otherwise the fabric will wrinkle excessively. Therefore packaging of the tube would be on very large rolls and folded, or festooned 40.
  • FIGURE 5 is an isometric view showing the second vertical support member 20 being attached to the first member 18 using nails or screws 50. The two vertical support members provide support to the longitudinal tab and therefore to the fabric tube during the pouring of concrete.
  • In the drawings and specification, there has been set forth a preferred embodiment of the invention, the scope of the invention being defined in the appended claims.

Claims (13)

  1. A prefabricated flexible forming tube (12) for a concrete column (26) or pad (26) comprising: at least one flexible sheet element (14) of specified width characterized in that the flexible sheet element is formed from woven fabric, and one longitudinal edge of said flexible sheet element (14) is arranged in overlapping relationship with either:
    i) an opposing longitudinal edge of the same flexible sheet element (14) whereby an outside surface of said flexible sheet element (14) adjacent one of said longitudinal edges is fixed to an inside surface of said flexible sheet element (14) to form a joint (36) and so create said flexible forming tube (12) and a longitudinal tab (16) is formed from said flexible sheet element (14) between another of said longitudinal edges and said joint (36); or
    ii) a longitudinal edge of another said flexible sheet element (14) whereby an outside surface adjacent to the longitudinal edge of one of said flexible sheet elements (14) is fixed to an inside surface of the other of said flexible sheet elements (14) to form a joint (36) and a longitudinal tab (16) is formed from said other flexible sheet element (14) between the joint (36) and said longitudinal edge of said other flexible sheet element (14), such that said joined flexible sheet elements (14) create at least a portion of said flexible forming tube (12) , so that the multiplicity of joined flexible sheet form elements forms a specific diameter tube with a multiplicity of longitudinal tabs.
  2. A prefabricated flexible forming tube (12) according to claim 1 wherein said tube (12) is formed from a multiplicity of said flexible sheet elements (14), adjacent flexible sheet elements (14) of said multiplicity being fixed together as claimed in claim 1 to form two or more said joints (36), each joint (36) having an associated longitudinal tab (16).
  3. A prefabricated flexible forming tube (12) according to claim 1 or claim 2 wherein at least two of said flexible sheet elements (14) are longitudinally joined by temporary joining means (44).
  4. A prefabricated flexible forming tube (12) according to claim 3 wherein said temporary joining means is a zipper (44).
  5. A prefabricated flexible forming tube (12) according to claim 1 or claim 2 wherein said woven fabric is of such a nature that it adheres to a concrete column or pad formed by supplying said forming tube with foundation material (26), and said woven fabric cannot be stripped from said concrete column or pad.
  6. A prefabricated flexible forming tube (12) according to claim 5 wherein said woven fabric contains high strength warp and/or weft elements to add structural strength to said concrete column or pad (26).
  7. A prefabricated flexible forming tube (12) according to claim 6 wherein said warp and/or weft elements are made of carbon fibre.
  8. A method of constructing a concrete column (26) comprising the steps of:
    1) forming a prefabricated flexible forming tube (12) for said concrete column (26) characterized by the steps of:
    a) providing at least one flexible sheet element (14) of indefinite length and specified width, formed from woven fabric, said flexible sheet element (14) having a longitudinal edge;
    b) arranging said longitudinal edge in overlapping relationship with either:
    i) an opposing longitudinal edge of the same flexible sheet element (14); fixing an outside surface of said flexible sheet element (14) adjacent one of said longitudinal edges to an inside surface of said flexible sheet element (14) to form a joint (36) and thereby create said flexible forming tube (12) having indefinite length and a specific diameter; said flexible forming tube (12) having a longitudinal tab (16) formed from said flexible sheet element (14) between another of said longitudinal edges and said joint (36); or
    ii) a longitudinal edge of another said flexible sheet element (14); fixing an outside surface of one of said flexible sheet elements (14) adjacent to a longitudinal edge of said flexible sheet element (14) to an inside surface of the other said flexible sheet element (14) to form a joint (36) and thereby create at least a portion of a flexible forming tube (12) of indefinite length, said at least a portion of said flexible forming tube (12) having a longitudinal tab (16) formed from the other said flexible sheet element (14) between said joint (36) and said longitudinal edge of the other said flexible sheet element (14) , so that the multiplicity of joined flexible sheet form elements forms a specific diameter tube with a multiplicity of longitudinal tabs ;
    said method further including the steps of:
    2) cutting off a specified length of said prefabricated flexible forming tube (12), said specified length being equal to the desired height for said concrete column (26);
    3) sandwiching said longitudinal tab (16) between a pair of vertical support members (18, 20);
    4) positioning and bracing said vertical support members (18, 20) with bracing members (22, 30) so that said flexible forming tube (12) is located in a position where said concrete column (26) is to be constructed; and
    5) supplying a flowable and settable foundation material (26) to substantially fill space within said flexible forming tube (12), to form said concrete column (26).
  9. A method of constructing a concrete column (26) according to claim 8 wherein:
    1) said step of forming said prefabricated flexible forming tube (12) includes joining a multiplicity of said flexible sheet elements (14), adjacent flexible sheet elements (14) of said multiplicity being fixed together as claimed in claim 8, to form two or more said joints (36), each said joint (36) having an associated longitudinal tab (16);
    2) said step of sandwiching said longitudinal tab (16) includes sandwiching each said longitudinal tab between pairs of vertical support members; and
    3) said step of positioning and bracing includes positioning and bracing each pair of vertical support members (18, 20) with bracing members (22, 30).
  10. A method of constructing a concrete column (26) according to claim 8 or 9 wherein said flexible forming tube (12) is left in place around said concrete column.
  11. A method of constructing a concrete pad (26) comprising the steps of:
    1) forming a prefabricated flexible forming tube (12) for said concrete pad (26) characterized by the steps of:
    a) providing at least one flexible sheet element (14) of indefinite length and specified width, formed from woven fabric, said flexible sheet element (14) having a longitudinal edge;
    b) arranging said longitudinal edge in overlapping relationship with either:
    i) an opposing longitudinal edge of the same flexible sheet element (14); fixing an outside surface of said flexible sheet element (14) adjacent one of said longitudinal edges to an inside surface of said flexible sheet element (14) to form a joint (36) and thereby create said flexible forming tube (12) having indefinite length and a specific diameter; said flexible forming tube (12) having a longitudinal tab (16) formed from said flexible sheet element (14) between another of said longitudinal edges and said joint (36); or
    ii) a longitudinal edge of another said flexible sheet element (14); fixing an outside surface of one of said flexible sheet elements (14) adjacent to a longitudinal edge of said flexible sheet element (14) to an inside surface of the other said flexible sheet element (14) to form a joint (36) and thereby create at least a portion of said flexible forming tube (12) of indefinite length, said at least a portion of said flexible forming tube (12) having a longitudinal tab (16) formed from the other said flexible sheet element (14) between said joint (36) and said longitudinal edge of the other said flexible sheet element (14), so that the multiplicity of joined flexible sheet form elements forms a specific diameter tube with a multiplicity of longitudinal tabs;
    said method further including the steps of:
    2) cutting off a specified length of said prefabricated flexible forming tube (12), said specified length being equal to the desired height for said concrete pad (26);
    3) positioning a stake (30) around a desired location for said concrete pad (26);
    4) attaching (34) said longitudinal tab (16) to said stake (30) to position said flexible forming tube (12) in said desired location;
    5) supplying a flowable and settable foundation material (26) to substantially fill space within said flexible forming tube (12), to form said concrete pad (26).
  12. A method of constructing a concrete pad (26) according to claim 11 wherein:
    1) said step of forming said prefabricated flexible forming tube (12) includes joining a multiplicity of said flexible sheet elements (14), adjacent flexible sheet elements (14) of said multiplicity being fixed together as claimed in claim 11, to form two or more said joints (36), each said joint (36) having an associated longitudinal tab (16);
    2) said step of positioning said stake includes positioning a stake (30) for each said longitudinal tab (16) around said desired location, spacing between adjacent stakes being equal to the spacing between adjacent longitudinal tabs (16); and
    3) said attaching step includes attaching each longitudinal tab (16) to a respective stake (30).
  13. A method of constructing a concrete pad (26) as claimed in claim 10 wherein said flexible forming tube (12) is left in place around said concrete pad (26).
EP03758384A 2002-10-22 2003-10-22 Fabric column and pad concrete form Expired - Lifetime EP1567735B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US42002902P 2002-10-22 2002-10-22
US420029P 2002-10-22
PCT/IB2003/004633 WO2004038127A1 (en) 2002-10-22 2003-10-22 Fabric column and pad concrete form

Publications (2)

Publication Number Publication Date
EP1567735A1 EP1567735A1 (en) 2005-08-31
EP1567735B1 true EP1567735B1 (en) 2012-06-06

Family

ID=32176503

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03758384A Expired - Lifetime EP1567735B1 (en) 2002-10-22 2003-10-22 Fabric column and pad concrete form

Country Status (7)

Country Link
US (2) US20040128922A1 (en)
EP (1) EP1567735B1 (en)
JP (1) JP2006504009A (en)
AU (1) AU2003274402A1 (en)
BR (1) BR0315526A (en)
MX (1) MXPA05004260A (en)
WO (1) WO2004038127A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110306727A (en) * 2019-06-10 2019-10-08 山东科技大学 Precast prestressed steel core concrete column and construction method

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2297971B1 (en) * 2005-05-24 2009-08-24 Jesus Sanchez Reñasco FORMWORK FOR CYLINDRICAL COLUMNS.
US8286398B2 (en) * 2008-07-15 2012-10-16 Richard Fearn Monopour form
NO336311B1 (en) * 2010-03-12 2015-07-27 Mindor As Column formwork.
US9097017B1 (en) * 2012-11-04 2015-08-04 Hector Vanlennep Easy fit concealed post anchor system
US10344443B2 (en) * 2016-05-09 2019-07-09 Gaétan GENEST Foundation for the support of a structure and method of installation
MA46246A (en) 2016-09-14 2019-07-24 Armatron Systems Llc FAST EXTRUSION PRINT REINFORCED CEMENT-BASED CONSTRUCTION PROCESS AND APPARATUS FOR ITS USE
US9915064B1 (en) * 2016-11-11 2018-03-13 Mark E. Sanders Method and apparatus for reducing propagation of cracks in concrete
JP7224258B2 (en) * 2019-08-19 2023-02-17 鹿島建設株式会社 prefabricated parts

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US821738A (en) * 1905-12-02 1906-05-29 Leverett A Pratt Mold for concrete posts.
US1510950A (en) * 1919-11-15 1924-10-07 Charles M Markham Round column clamp
US2505426A (en) * 1948-12-18 1950-04-25 O'flaherty Michael Method of molding concrete structures by means of collapsible tubular forms
US4790509A (en) * 1987-05-19 1988-12-13 Cardwell William L Tubular concrete form collar
US4854542A (en) * 1988-10-03 1989-08-08 Pruett M B Concrete column form
SE9101464D0 (en) * 1991-05-15 1991-05-15 Lars Fredrik Forsbaeck DEVICE FOR ELIMINATION OF MOEBELHAELTA
US5368269A (en) * 1992-07-14 1994-11-29 Alpha Forming Systems, Division Of Elco Concrete Co, Inc Adjustable bracing system for column forms
US5328142A (en) * 1992-07-17 1994-07-12 Sonoco Products Company Concrete column forming tube
SE506023C2 (en) * 1992-10-09 1997-11-03 Anders Mohss Freestanding vertical molding for, for example, terminals and columns
JP3192277B2 (en) * 1993-05-14 2001-07-23 新日本製鐵株式会社 Concrete columns
US5580480A (en) * 1994-01-03 1996-12-03 Chatelain; Paul J. Form for making fence posts in situ
US5794387A (en) * 1997-03-20 1998-08-18 Musco Corporation Device and method to lift and manipulate poles which are mounted onto a base
FR2789706B1 (en) * 1999-02-15 2001-04-13 Waterair Ind METHOD FOR SEALING USING REINFORCEMENT PILLARS OF A STRUCTURE WITH VERTICAL WALLS AND PILLAR THEREFOR
US6832454B1 (en) * 1999-07-28 2004-12-21 South Dakota School Of Mines And Technology Beam filled with material, deck system and method
JP3484156B2 (en) * 1999-12-27 2004-01-06 構造品質保証研究所株式会社 Building reinforcement method and structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110306727A (en) * 2019-06-10 2019-10-08 山东科技大学 Precast prestressed steel core concrete column and construction method

Also Published As

Publication number Publication date
EP1567735A1 (en) 2005-08-31
JP2006504009A (en) 2006-02-02
AU2003274402A1 (en) 2004-05-13
WO2004038127A1 (en) 2004-05-06
US20080083190A1 (en) 2008-04-10
US20040128922A1 (en) 2004-07-08
MXPA05004260A (en) 2005-07-05
BR0315526A (en) 2005-08-23

Similar Documents

Publication Publication Date Title
US20080083190A1 (en) Fabric column and pad concrete form
US5328142A (en) Concrete column forming tube
US5495810A (en) Corrugated cardboard tube and pallet using the same
US7874540B2 (en) Concrete form for pouring non-round columns, and method of making same
US3956437A (en) Method and apparatus for casting a concrete column
EP2118403B1 (en) Recyclable formwork for forming a concrete structure
US20050066592A1 (en) Forming apparatus and method for constructing concrete columns
US4112644A (en) Fiberglass tank and method for making the same
EP0192308B1 (en) A reservoir for placing in a fixed position on the ground and method for manufacturing same
KR20190063645A (en) Connecting structure of Composite column and H-beam and manufacturing method thereof
CA2916214A1 (en) Modular void form
US3980268A (en) Circular column mold having an upper alignment ring
CA2505683A1 (en) Fabric column and pad concrete form
US20050070187A1 (en) Form for containing settable filler material during setting
JP6325380B2 (en) Reinforcing method and reinforcing structure of concrete structure
JP4179415B2 (en) Joining method and joining member of jacket structure and pile
JP7008008B2 (en) How to build piers, piers
AU784695B2 (en) Formwork for casting concrete and method for doing same
CN101970775B (en) Multi-part tube and method of assembly
CN217053463U (en) Buried lattice column for open-cut shallow-buried tunnel
JP6951961B2 (en) How to build a ground tank and a ground tank
JP7252613B2 (en) Formwork for building and civil engineering materials
JP3308199B2 (en) Cable drum
JPH1025907A (en) Reinforcing construction of concrete column
JPH09158525A (en) Construction method of roof

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20050510

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

RIN1 Information on inventor provided before grant (corrected)

Inventor name: FEARN, RICHARD

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 561135

Country of ref document: AT

Kind code of ref document: T

Effective date: 20120615

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 60341164

Country of ref document: DE

Effective date: 20120809

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20120606

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120606

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120606

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120606

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 561135

Country of ref document: AT

Kind code of ref document: T

Effective date: 20120606

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120907

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120606

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120606

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120606

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120606

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120606

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120606

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120606

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120606

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20121008

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120606

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20121018

Year of fee payment: 10

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120606

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120917

26N No opposition filed

Effective date: 20130307

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121031

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: DE

Ref legal event code: R084

Ref document number: 60341164

Country of ref document: DE

Effective date: 20130429

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 60341164

Country of ref document: DE

Effective date: 20130307

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20130628

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121031

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121022

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121031

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120906

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20130423

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120606

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121022

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20131022

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20131022

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20031022

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 60341164

Country of ref document: DE

Effective date: 20140501

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140501