WO2001063066A1 - Formwork for creating columns and curved walls - Google Patents

Formwork for creating columns and curved walls Download PDF

Info

Publication number
WO2001063066A1
WO2001063066A1 PCT/CA2001/000228 CA0100228W WO0163066A1 WO 2001063066 A1 WO2001063066 A1 WO 2001063066A1 CA 0100228 W CA0100228 W CA 0100228W WO 0163066 A1 WO0163066 A1 WO 0163066A1
Authority
WO
WIPO (PCT)
Prior art keywords
connector
curved wall
elements
formwork
longitudinal edge
Prior art date
Application number
PCT/CA2001/000228
Other languages
French (fr)
Inventor
Francesco Piccone
Original Assignee
Francesco Piccone
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 Francesco Piccone filed Critical Francesco Piccone
Priority to AU2001235296A priority Critical patent/AU2001235296A1/en
Publication of WO2001063066A1 publication Critical patent/WO2001063066A1/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/30—Columns; Pillars; Struts
    • E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/84—Walls made by casting, pouring, or tamping in situ
    • E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
    • E04B2/8635—Walls made by casting, pouring, or tamping in situ made in permanent forms with ties attached to the inner faces of the forms
    • E04B2/8641—Walls made by casting, pouring, or tamping in situ made in permanent forms with ties attached to the inner faces of the forms using dovetail-type connections
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/84—Walls made by casting, pouring, or tamping in situ
    • E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
    • E04B2002/867—Corner details

Definitions

  • This invention relates to modular formwork for forming concrete columns and curv ed concrete structures
  • 45° element 38 comp ⁇ ses a flat planar surface 40 Each longitudinal edge terminates in a C-shaped portion 42. 44 One of the C-shaped portions defines an angle of 45° to the planar surface 40 while the other defines an angle of 135° to the planar surface 40.
  • elements 38 may be disposed on key projections 36 so as to extend from the key projection 36 to the T-shaped projections 23. 25 of a connector element 12. The 45° elements 38 provide additional rigidity to resist outward pressure from the concrete.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Abstract

A formwork system for casting curved concrete walls comprises a curved wall element having a curved wall portion and connectors at each longitudinal edge of the curved wall portion. Resistance to bending in the vertical plane of the formwork is provided by connector elements extending radially inward from the curved wall elements. The connector elements also act to retain together edge adjacent curved wall elements.

Description

TITLE
FORMWORK FOR CREATING COLUMNS AND C R\ ED WALLS
FIELD OF THE INVENTION
This invention relates to modular formwork for forming concrete columns and curv ed concrete structures
BACKGROUND OF THE INVENTION
It is known to provide formwork for pouπng conci ete columns comprising semi-circular sections of steel pipe which are joined to form a rube and into which concrete is poured. Once the concrete has set, the steel pipe sections are removed
It is also known to provide modular PVC formwork for the purpose of creating straight and flat concrete walls, and m which the formwork stays in place after the concrete has set. Canadian Patent No. 2,215,939 discloses such formwork which compπses flat elongated wall elements connected to one another b\ engaging means along their respective edges, and connecting members extending across the width of the formwork to retain opposed wall surfaces in spaced relationship The result is modular stay in place formwork for creating straight walls
However, there remains a need to provide modular stay in place formwork that is capable of producing concrete columns and curved walls and which avoids the difficulty of dealing with bulky semi-circular sections of steel pipe It is accordingly an obiect of this invention to provide stay-in-place modular formwork elements foi pouπng concrete into columns or curved surfaces, and a method of assembling them It is a further object of this invention to prov ide such elements which are capable of being used to connect to sta_v -m-place modular straight wall formwork of the kind described in Canadian Patent No 2,215,939
As noted abov e prior art modular PVC formwork elements for forming straight walls are know n to prov ide cross members between opposing surfaces of the formwork for the purpose of providing πgiditv against the outward pressure of concrete. However, w hen forming a column or a curv ed wall, the prov ision of a cross member between opposing faces presents problems For example, the use of such a cross member may impede the ability to install rebar It is therefore an object of this invention to provide modular formwork for creating curved concrete walls or services which provides inherent structural rigidity to the formwork and which resists outward bulging due to pressure from the concrete.
SUMM ARY OF THE INVENTION
According to the invention there is provided a curved elongated modular w all element comprising a
Figure imgf000003_0001
ed portion and connector means at each longitudinal edge of the curved portion The arc angle defined by the outer surface preferably compπses an even fraction of 360° A connector element according to the invention compπses an elongated, straight planar surface, one longitudinal edge of which includes two opposed connecting means for engaging the connecting means of the wall elements. In another aspect of the invention, a curved wall is formed by a plurality of individual elongated formwork elements connected end to end by means of a connector element extending radially inward from the point where two edge adjacent wall elements meet, one end of such connector being attached to the ends of respective adjacent wall elements, and said connector having a planar surface extending in said radial direction.
In another aspect, the invention comprises a curved wall element as described above and further including inwardly extending projections spaced inwardly from each opposed end of each element.
Bracing elements are described which comprise a planar central portion terminating at each longitudinal edge in angled connecting means extending at 45° and 135° with respect to the plane of the central portion. The connecting means of the bracing elements are adapted to engage the inwardly spaced projections of the wall elements.
Other aspects of the invention will be appreciated by reference to the detailed description of the embodiments of the invention and to the claims.
BRIEF DESCRIPTION OF THE DRAWINGS
The preferred and alternative embodiments of the invention will be appreciated by reference to the following description and to the drawings thereof in which: , ,_-„„.-.: 1/63066
Fig. 1 is a cross-sectional view of a segment of a column of formwork made using the formwork elements according to the invention;
Fig 1 (a) is an enlarged view of a portion of Fig 1 comprising two wall elements according to the invention;
Fig 2 is a cross-sectional view of a wall element according to the invention,
Fig. 3 is a cross-sectional view of a connector element according to the invention,
Fig 4 is a cross-sectional view of an alternative embodiment of the wall element of the invention;
Fig. 5 is a cross-sectional view of a segment of a column of formwork made from the wall elements of Fig. 4;
Fig. 5(a) is an enlarged view of a portion of Fig. 5 compπsing a single w all element;
Fig. 6 is a cross-sectional view of a 45° element according to the invention,
Fig. 7 is an enlarged view of two 45° elements connected to a connector element and t o curved wall elements;
Fig. 8 is a cross-sectional view of a section of curved formwork according to the invention joining two straight formwork sections; and, Fig. 9 is a cross-sectional view of two connected curved wall elements, bracin elements and 45 degree elements according to an alternative embodiment.
DETAILED DESCRIPTION OF THE PREFERRED AND
ALTERNATIVE EMBODIMENTS
A formwork structure forming a segment of a column according to the invention is shown in Fig. 1. All of the drawings show cross sectional views of the elements. The elements are elongated through the plane of the drawings.
Referring to Fig. 1 and Fig. 1 (a), the formwork compπses a plurality of curved wall elements 10 connected in edge to edge relationship as at 1 1. Connector elements 12 extend radially from connection points 1 1 between adjacent elements 10.
Referring to Fig. 2, each curved wall element 10 comprises a curved surface 14, and a C-shaped termination 16 at each longitudinal edge I S. 20 of element 10. T- shaped key projections 36 are spaced inwardly from the longitudinal edges of element 10.
As best seen in Fig. 3, each connector element 12 comprises an elongated planar surface 22, and opposed T-shaped projections 24, 26 and 23, 25 extending outwardly from longitudinal edges 28, 30 respectively of the connector element 12. L-shaped extensions 27, 29 serve to bracket projections 24, 26.
A column of formwork formed with the connector and wall elements according to the invention will provide rigidity against bending out of the vertical plane. The rigidity is provided bv the curved wall elements themselves, but is thought to be significantly enhanced bv the presence of radially disposed connector elements, w hich w ill tend to resist bending of the column along the plane of the connector elements It w ill be appreciated that the more connectors are provided along the inside peπpherv of the formwork. the greater the overall resistance to bending of the formwork w ill be
The curved wall element 10 is preferably chosen to be an integral fraction of 360° Thus, a real number of elements 10 may be used without truncation to complete a circle. In the preferred embodiment, the arc length of element 10 is chosen to be 3.14 inches or centimeters or a multiple thereof.
Referπng to Fig 4. in an alternative embodiment of the invention, wall elements 34 comprise a plurality of wall segments 31 , 33 and 35, each segment having the characteristics of element 10, but the segments are integrally formed as a single element 34 A column of formwork made using elements 34 is illustrated in
Fig. 5.
Referπng to Figs 1. 1 (a). 5 and 5(a), the wall elements 10 and 34 preferably include key projections 36 extending inwardly from the inner surface of the wall element and being spaced inwardly in relation to the longitudinal edges of the wall element. Key projections 36 enable the use of a 45° element 38, such use being illustrated in Fig 5.
As is best appreciated by reference to Fig. 6, 45° element 38 compπses a flat planar surface 40 Each longitudinal edge terminates in a C-shaped portion 42. 44 One of the C-shaped portions defines an angle of 45° to the planar surface 40 while the other defines an angle of 135° to the planar surface 40. As is best illustrated in Fig. 7, elements 38 may be disposed on key projections 36 so as to extend from the key projection 36 to the T-shaped projections 23. 25 of a connector element 12. The 45° elements 38 provide additional rigidity to resist outward pressure from the concrete.
The curved wall elements 10 and the connector elements 12 may also be used to interpose a curved wall section between straight wall sections of formwork. as illustrated in Fig. 8. The curved wall elements 10 are adapted to integrate into straight formwork wall elements 50 and straight formwork connector elements 52 of the types described in Canadian Patent No. 2,215,939, straight formwork elements 50 being provided with C-shaped portions 54 corresponding to the C-shaped terminations 16 of curved wall elements 10, and straight formwork elements 12 being provided with key projections 56 corresponding to key projections 36 of connector elements 12.
It may also be desirable to further enhance structural rigidity of a column of formwork by cross-bracing opposing walls. This may be accomplished by extending diametrically opposed connector elements inward so as to connect them together. Appropriately wide connector elements may be made to extend inward from connection points between curved wall elements at diametrically opposed sides of the column. The wide connector elements may be adapted to connect to one another end to end at the epicenter of the column.
It will be appreciated that the connection means between the wall elements 10 and the connector elements 12 have been illustrated in the preferred embodiment as C-shaped portions on the curved wall elements 10 and cooperating opposed T-shaped portions on the connector elements 12 to form a tongue and groove type of connection. The arrangement can of course be substituted for T shaped portions at the end of the wall elements and C shaped portions on the connector elements, or indeed any other type of connection system, provided the connector elements act to secure edge to edge adjacent curved wall elements to one another
Similarly, the connection means between the 45° elements 38 and the key projections 36 have been illustrated in the preferred embodiment as C-shaped portions on the 45° elements and cooperating opposed T-shaped key projections on the connector elements (23. 25) and the curved wall elements (36) to form a tongue and groove type of connection The arrangement can of course be reversed, or indeed anv other type of connection system, provided the 45° elements act to brace the connector elements 12 to the curved wall elements 10
In an alternative approach, the connector means between adjacent curved wall elements is as shown in Fig 9 According to this approach, each curved wall element 70 includes a male connector 72 along one longitudinal edge and a female connector 74 along the other longitudinal edge The element 70 includes connectors 76 spaced inwardly from the longitudinal edges of the element Connectors 76 are adapted to connect to bracing elements 12 to provide resistance to bending of the formwork in the vertical plane Elements 70 otherwise have projections 36 spaced inwardly from each longitudinal edge of the element, as m the case of the curved wall elements 10 descπbed above Forty five degree elements 38 are used to brace the curved wall portion of elements 70 against outward bulging due to the pressure of the concrete
It will be appreciated that the preferred and alternate embodiments have been specifically descπbed, but that vaπations therein may be practiced without departing from the scope of the inv ention, which is properly defined by the claims

Claims

1. An elongated formwork element for casting curved surfaces in vertical concrete structures compπsing
a uniformly curved wall portion extending between the two longitudinal edges of said element; and,
connectors at each longitudinal edge of said curved w all portion.
2. A formwork element as in claim 1 wherein the connectors at each longitudinal edge are mirror images of each other.
3. A formwork element as m claim 1 further compπsing at least two projections extending radially inward from said curved wall portion, one of said projections being spaced inwardly from one longitudinal edge of said curved wall portion and another of said projections being spaced inwardly from the other longitudinal edge of said curved wall portion.
4. An elongated formwork connector element for use in casting curved surfaces in vertical concrete structures comprising:
an elongated straight planar surface having two longitudinal edges; and,
one of said longitudinal edges having two connectors on opposite sides of said planar surface.
5 A connector element as in claim 4 wherein the other longitudinal edge of said planar surface has tw o connectors on opposite sides of said planar surface
6 A connector element as in claim 5 wherein said connectors are mirror images of one another.
7 A connector element as in claim 6 wherein one of said longitudinal edges further includes two L shaped projections extending from opposite sides of said planar surface so as to encompass the connectors at said longitudinal edge
8 A kit of form ork elements comprising formwork elements according to claim 2 and connector elements according to claim 4
9. A kit of formw ork elements comprising formwork elements according to claim 3 and connector elements according to claim 4
10. An assembly of formwork for casting curved surfaces in vertical concrete structures comprising:
a plurality of elongated curved wall elements according to claim 2 disposed in edge adjacent relationship; and,
a plurality of connector elements according to claim 4, each of said connector elements being disposed such that one of the connectors of said connector element engages the connector element on a longitudinal edge of a first one of said curved wall elements and the other connector of said connector element engages the connector element on a longitudinal edge of a curved wall element which is edge adjacent to said first curved wall element.
1 1. An assembly as in claim 10 wherein said curved wall elements are curved wall element according to claim 3 and said connector elements are connector elements according to claim 6 and further comprising a plurality of bracing elements each having a flat planar portion, two longitudinal edges and a connector at each longitudinal edge, one of the connectors of each bracing element being connected to one of said projections of one of said curved wall elements and the other connector of each bracing element being connected to one of the connectors at one end of one of said connector elements.
12. A formwork element as in claim 1 or claim 3 wherein the arc angle defined between the longitudinal edges is an even fraction of 360°.
13. A formwork element as in claim 1 wherein the arc length defined between the longitudinal edges is 3.14 inches or centimeters or a multiple thereof
14. An elongated formwork element for casting curved surfaces in vertical concrete structures comprising:
a uniformly curved wall portion extending between the two longitudinal edges of said element;
a male connector at one longitudinal edge of said curved wall portion;
a female connector at the other longitudinal edge of said curved wall portion; said male connector being adapted to connect to the female connector of a similar curved wall element;
at least two projections extending radially inward from said curved wall portion, one of said projections being spaced inwardly from one longitudinal edge of said curved wall portion and another of said projections being spaced inwardly from the other longitudinal edge of said curved wall portion; and,
connector means spaced inward from the longitudinal edges.
PCT/CA2001/000228 2000-02-23 2001-02-23 Formwork for creating columns and curved walls WO2001063066A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001235296A AU2001235296A1 (en) 2000-02-23 2001-02-23 Formwork for creating columns and curved walls

Applications Claiming Priority (2)

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CA2,299,193 2000-02-23
CA 2299193 CA2299193A1 (en) 2000-02-23 2000-02-23 Formwork for creating columns and curved walls

Publications (1)

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Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003058008A1 (en) * 2002-01-08 2003-07-17 Nicolo, Assunta Method and apparatus for forming construction panels and structures
US7818936B2 (en) 2000-02-09 2010-10-26 Octaform Systems Inc. Extruded permanent form-work for concrete
US20120119061A1 (en) * 2009-06-11 2012-05-17 Aluma Systems, Inc. Concrete Forming Panel
US8844241B2 (en) 2007-04-02 2014-09-30 Cfs Concrete Forming Systems Inc. Methods and apparatus for providing linings on concrete structures
US8943774B2 (en) 2009-04-27 2015-02-03 Cfs Concrete Forming Systems Inc. Methods and apparatus for restoring, repairing, reinforcing and/or protecting structures using concrete
US9080337B2 (en) 2007-11-09 2015-07-14 Cfs Concrete Forming Systems Inc. Connector components for form-work systems and methods for use of same
US9206614B2 (en) 2011-11-24 2015-12-08 Cfs Concrete Forming Systems Inc. Stay-in-place formwork with engaging and abutting connections
US9273477B2 (en) 2009-02-18 2016-03-01 Cfs Concrete Forming Systems Inc. Clip-on connection system for stay-in-place form-work
US9273479B2 (en) 2009-01-07 2016-03-01 Cfs Concrete Forming Systems Inc. Methods and apparatus for restoring, repairing, reinforcing and/or protecting structures using concrete
US9315987B2 (en) 2012-01-05 2016-04-19 Cfs Concrete Forming Systems Inc. Systems for restoring, repairing, reinforcing, protecting, insulating and/or cladding structures with locatable stand-off components
US9441365B2 (en) 2011-11-24 2016-09-13 Cfs Concrete Forming Systems Inc. Stay-in-place formwork with anti-deformation panels
US9453345B2 (en) 2012-01-05 2016-09-27 Cfs Concrete Forming Systems Inc. Panel-to-panel connections for stay-in-place liners used to repair structures
US9783991B2 (en) 2013-12-06 2017-10-10 Cfs Concrete Forming Systems Inc. Structure cladding trim components and methods for fabrication and use of same
US9982444B2 (en) 2014-04-04 2018-05-29 Cfs Concrete Forming Systems Inc. Liquid and gas-impermeable connections for panels of stay-in-place form-work systems
US10022825B2 (en) 2010-07-06 2018-07-17 Cfs Concrete Forming Systems Inc. Method for restoring, repairing, reinforcing, protecting, insulating and/or cladding a variety of structures
US10151119B2 (en) 2012-01-05 2018-12-11 Cfs Concrete Forming Systems Inc. Tool for making panel-to-panel connections for stay-in-place liners used to repair structures and methods for using same
US10731333B2 (en) 2015-12-31 2020-08-04 Cfs Concrete Forming Systems Inc. Structure-lining apparatus with adjustable width and tool for same
US11180915B2 (en) 2017-04-03 2021-11-23 Cfs Concrete Forming Systems Inc. Longspan stay-in-place liners
US11512483B2 (en) 2017-12-22 2022-11-29 Cfs Concrete Forming Systems Inc. Snap-together standoffs for restoring, repairing, reinforcing, protecting, insulating and/or cladding structures
US11674322B2 (en) 2019-02-08 2023-06-13 Cfs Concrete Forming Systems Inc. Retainers for restoring, repairing, reinforcing, protecting, insulating and/or cladding structures

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* Cited by examiner, † Cited by third party
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CA2990126A1 (en) * 2016-12-23 2018-06-23 Dieter Krohmer Portable modular system for structural assemblies
MY170079A (en) 2017-03-06 2019-07-03 Csr Building Products Ltd Formwork system

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2076472A (en) * 1936-02-26 1937-04-06 London Bernard Building construction
US4703602A (en) * 1985-09-09 1987-11-03 National Concrete Masonry Association Forming system for construction
US4866891A (en) * 1987-11-16 1989-09-19 Young Rubber Company Permanent non-removable insulating type concrete wall forming structure
FR2717848A1 (en) * 1994-03-23 1995-09-29 Desjoyaux Piscines Panel for the creation of retention basins.
US5491947A (en) * 1994-03-24 1996-02-20 Kim; Sun Y. Form-fill concrete wall
US5740648A (en) * 1996-05-14 1998-04-21 Piccone; Francesco Modular formwork for concrete
DE29803155U1 (en) * 1998-02-23 1998-04-23 Betonwerk Theodor Pieper GmbH & Co. KG, 57392 Schmallenberg Formwork aid
CA2218600A1 (en) * 1995-05-11 1998-06-12 Francesco Piccone Modular formwork elements and assembly
CA2215939C (en) 1995-05-11 1999-08-24 Francesco Piccone Interconnectable formwork elements

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2076472A (en) * 1936-02-26 1937-04-06 London Bernard Building construction
US4703602A (en) * 1985-09-09 1987-11-03 National Concrete Masonry Association Forming system for construction
US4866891A (en) * 1987-11-16 1989-09-19 Young Rubber Company Permanent non-removable insulating type concrete wall forming structure
FR2717848A1 (en) * 1994-03-23 1995-09-29 Desjoyaux Piscines Panel for the creation of retention basins.
US5491947A (en) * 1994-03-24 1996-02-20 Kim; Sun Y. Form-fill concrete wall
CA2218600A1 (en) * 1995-05-11 1998-06-12 Francesco Piccone Modular formwork elements and assembly
CA2215939C (en) 1995-05-11 1999-08-24 Francesco Piccone Interconnectable formwork elements
US5740648A (en) * 1996-05-14 1998-04-21 Piccone; Francesco Modular formwork for concrete
DE29803155U1 (en) * 1998-02-23 1998-04-23 Betonwerk Theodor Pieper GmbH & Co. KG, 57392 Schmallenberg Formwork aid

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7818936B2 (en) 2000-02-09 2010-10-26 Octaform Systems Inc. Extruded permanent form-work for concrete
WO2003058008A1 (en) * 2002-01-08 2003-07-17 Nicolo, Assunta Method and apparatus for forming construction panels and structures
US8844241B2 (en) 2007-04-02 2014-09-30 Cfs Concrete Forming Systems Inc. Methods and apparatus for providing linings on concrete structures
US9080337B2 (en) 2007-11-09 2015-07-14 Cfs Concrete Forming Systems Inc. Connector components for form-work systems and methods for use of same
US10280636B2 (en) 2007-11-09 2019-05-07 Cfs Concrete Forming Systems Inc. Connector components for form-work systems and methods for use of same
US9273479B2 (en) 2009-01-07 2016-03-01 Cfs Concrete Forming Systems Inc. Methods and apparatus for restoring, repairing, reinforcing and/or protecting structures using concrete
US9879436B2 (en) 2009-01-07 2018-01-30 Cfs Concrete Forming Systems Inc Methods and apparatus for restoring, repairing, reinforcing and/or protecting structures using concrete
US11512484B2 (en) 2009-01-07 2022-11-29 Cfs Concrete Forming Systems Inc. Methods and apparatus for restoring, repairing, reinforcing and/or protecting structures using concrete
US9359780B2 (en) 2009-01-07 2016-06-07 Cfs Concrete Forming Systems Inc. Methods and apparatus for restoring, repairing, reinforcing and/or protecting structures using concrete
US10662661B2 (en) 2009-01-07 2020-05-26 Cfs Concrete Forming Systems Inc. Methods and apparatus for restoring, repairing, reinforcing and/or protecting structures using concrete
US9273477B2 (en) 2009-02-18 2016-03-01 Cfs Concrete Forming Systems Inc. Clip-on connection system for stay-in-place form-work
US8943774B2 (en) 2009-04-27 2015-02-03 Cfs Concrete Forming Systems Inc. Methods and apparatus for restoring, repairing, reinforcing and/or protecting structures using concrete
US8651449B2 (en) * 2009-06-11 2014-02-18 Brand Services, Llc Concrete forming panel
US20120119061A1 (en) * 2009-06-11 2012-05-17 Aluma Systems, Inc. Concrete Forming Panel
US10022825B2 (en) 2010-07-06 2018-07-17 Cfs Concrete Forming Systems Inc. Method for restoring, repairing, reinforcing, protecting, insulating and/or cladding a variety of structures
US9206614B2 (en) 2011-11-24 2015-12-08 Cfs Concrete Forming Systems Inc. Stay-in-place formwork with engaging and abutting connections
US9441365B2 (en) 2011-11-24 2016-09-13 Cfs Concrete Forming Systems Inc. Stay-in-place formwork with anti-deformation panels
US9784005B2 (en) 2012-01-05 2017-10-10 Cfs Concrete Forming Systems Inc. Systems for restoring, repairing, reinforcing, protecting, insulating and/or cladding structures with locatable stand-off components
US9315987B2 (en) 2012-01-05 2016-04-19 Cfs Concrete Forming Systems Inc. Systems for restoring, repairing, reinforcing, protecting, insulating and/or cladding structures with locatable stand-off components
US10151119B2 (en) 2012-01-05 2018-12-11 Cfs Concrete Forming Systems Inc. Tool for making panel-to-panel connections for stay-in-place liners used to repair structures and methods for using same
US9453345B2 (en) 2012-01-05 2016-09-27 Cfs Concrete Forming Systems Inc. Panel-to-panel connections for stay-in-place liners used to repair structures
US9790681B2 (en) 2012-01-05 2017-10-17 Cfs Concrete Forming Systems Inc. Panel-to-panel connections for stay-in-place liners used to repair structures
US9783991B2 (en) 2013-12-06 2017-10-10 Cfs Concrete Forming Systems Inc. Structure cladding trim components and methods for fabrication and use of same
US10450763B2 (en) 2014-04-04 2019-10-22 Cfs Concrete Forming Systems Inc. Liquid and gas-impermeable connections for panels of stay-in-place form-work systems
US9982444B2 (en) 2014-04-04 2018-05-29 Cfs Concrete Forming Systems Inc. Liquid and gas-impermeable connections for panels of stay-in-place form-work systems
US10731333B2 (en) 2015-12-31 2020-08-04 Cfs Concrete Forming Systems Inc. Structure-lining apparatus with adjustable width and tool for same
US11053676B2 (en) 2015-12-31 2021-07-06 Cfs Concrete Forming Systems Inc. Structure-lining apparatus with adjustable width and tool for same
US11499308B2 (en) 2015-12-31 2022-11-15 Cfs Concrete Forming Systems Inc. Structure-lining apparatus with adjustable width and tool for same
US11180915B2 (en) 2017-04-03 2021-11-23 Cfs Concrete Forming Systems Inc. Longspan stay-in-place liners
US11512483B2 (en) 2017-12-22 2022-11-29 Cfs Concrete Forming Systems Inc. Snap-together standoffs for restoring, repairing, reinforcing, protecting, insulating and/or cladding structures
US11674322B2 (en) 2019-02-08 2023-06-13 Cfs Concrete Forming Systems Inc. Retainers for restoring, repairing, reinforcing, protecting, insulating and/or cladding structures

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AU2001235296A1 (en) 2001-09-03

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