EP1672143A2 - Wiederverwenbare modulare einteilige Schalung zum Erzeugen von viereckigen oder rechteckigen Säulen - Google Patents

Wiederverwenbare modulare einteilige Schalung zum Erzeugen von viereckigen oder rechteckigen Säulen Download PDF

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Publication number
EP1672143A2
EP1672143A2 EP05425753A EP05425753A EP1672143A2 EP 1672143 A2 EP1672143 A2 EP 1672143A2 EP 05425753 A EP05425753 A EP 05425753A EP 05425753 A EP05425753 A EP 05425753A EP 1672143 A2 EP1672143 A2 EP 1672143A2
Authority
EP
European Patent Office
Prior art keywords
formwork
modular
reusable
holes
formworks
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Withdrawn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
EP05425753A
Other languages
English (en)
French (fr)
Other versions
EP1672143A3 (de
Inventor
Mirco c/o Geoplast S.p.a. Pegoraro
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.)
Geoplast SpA
Original Assignee
Geoplast SpA
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 Geoplast SpA filed Critical Geoplast SpA
Publication of EP1672143A2 publication Critical patent/EP1672143A2/de
Publication of EP1672143A3 publication Critical patent/EP1672143A3/de
Withdrawn legal-status Critical Current

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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
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/02—Forming boards or similar elements
    • E04G9/05—Forming boards or similar elements the form surface being of plastics
    • 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
    • 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
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/02—Forming boards or similar elements
    • E04G2009/028—Forming boards or similar elements with reinforcing ribs on the underside

Definitions

  • This patent relates to the equipment used in construction work and particularly concerns a new type of formwork for making square or rectangular concrete pillars or columns.
  • Previously-prepared formwork made of sheet metal or wood is generally used to make columns with a square or rectangular cross-section.
  • Sheet metal formwork is thick and consequently very heavy, however, so its installation often demands the use of a crane or lifting apparatus, or several workers. It needs to be routinely protected against rust and its weight makes it a constant hazard to workers, especially when it has deteriorated and risks causing injuries aggravated by the presence of rust. Its weight also makes it unsuitable for large-scale applications and its useful surface area is consequently very limited.
  • Wooden types of formwork are also known, consisting of flat planks that are assembled together with the aid of nails, brackets, crossbars and other metal equipment, which may be disposable all reusable.
  • This patent concerns new reusable plastic monobloc modular formworks with related keys that can be joined together to make a self-supporting formwork assembly for casting square or rectangular columns.
  • the object of the invention is to produce new reusable monobloc modular formworks and corresponding keys to make square or rectangular self supporting formwork assembley that is easy to assemble and dismantle.
  • Another object of the new reusable monobloc modular formwork is to make lightweight and stable forms without the need for any further external supporting structures.
  • Another object of the new reusable monobloc modular formwork is to enable a rapid stripping.
  • Another object is to prepare formwork suitable for use in casting various sizes of pillar, be they square or rectangular, or with other cross sections.
  • the monobloc modular formwork is made of plastic; it comprises a smooth formwork wall on the inside and has several stiffening ribs on the outside, preferably equidistant, lying both around the perimeter and over the surface of the wall.
  • This ribbing preferably extends at right angles from the plane of the wall and the coupling surfaces.
  • Holes are provided in the upper and lower perimeter ribbing and in the coupling surfaces to enable the insertion and rotation of the keys.
  • These keys consist of a cylindrical body with a handle at one end (preferably placed at right angles to said body), and two or more radial projections at the other end (preferably located at regular intervals).
  • compositions ensure the vertical stability of the self-supportin formwork prior to casting.
  • Suitable sloping surfaces are provided on the ribbing on the modular formwork in line with the holes and/or on the radial projections on the keys to prevent any unwanted rotation of the keys and consequent separation of the various modular elements, thus enabling the formworks to be locked to one another.
  • Figures 1 and 2 respectively illustrate two orthogonal views of a modular formwork (M) for use in combination with other similar modular formworks (M), for casting square or rectangular columns.
  • the modular formwork (M) consists of a plastic panel of generically flat cross-section with coupling surfaces (Me) sloping at a 45° angle to the plane (M1) of said panel, suitable for juxtaposing with similar modular formworks (M), as shown in figure 4a.
  • Said formork (M) is complete with several stiffening ribs (Mn) on the outside (M2) and further stiffening ribs (Mo) lying around its perimeter.
  • the ribs (Mn) on the outside are distributed over the whole of said outer surface (M2) of the modular formwork (M).
  • the ribs on the upper and lower perimeter (Mo) of the panel forming the modular formwork (M) are preferably thicker and wider.
  • the upper and lower perimeter ribbing (Mo) also provides a surface for supporting or connecting further modular formworks (M) above and below each element (M).
  • Holes (Mf) are provided in said perimeter ribbing (Mo) and in said coupling surfaces (Me), that are preferably circular in shape and have two or more diametrically opposite grooves (Mf1).
  • Said holes (Mf) are arranged at regular intervals along the perimeter ribbing (Mo) and the coupling surfaces (Me) and in such a manner that, when several modular formworks (M) are coupled together or stacked, said holes (Mf) in one formwork (M) are exactly aligned with the corresponding holes (Mf) in the adjacent formwork (M).
  • the distance between the outermost holes (Mf) in each element's perimeter ribbing (Mo) or coupling surface (Me) and the end of the ribbing (Mo) or coupling surface (Me) is narrower than, and preferably half the distance between the other holes (Mf) lying along said ribbing (Mo) or coupling surface (Me) on the modular formwork (M).
  • the surface on the inside (M1) of the new modular formwork (M) is smooth and preferably treated so as to prevent the concrete from adhering thereto.
  • Figures 3a, 3b and 3c show three non-restrictive and non-exhaustive examples of modular formworks (M) in different sizes.
  • Modular formworks (M) of different sizes can be coupled in different combinations to obtain formwork of the required dimensions for casting square or rectangular columns.
  • the various modular formworks (M) can be connected with straps or, preferably, with specific keys (C).
  • Figures 5 and 6 respectively illustrate a side view and an axonometric view of such a key (C).
  • the key (C) consists of a body (C1) with a handle (C2) at one end and two or more radial projections (C3) at the other end.
  • the body (C1) of the key (C) is generically cylindrical in shape and has the same diameter as that of the holes (Mf) in the perimeter ribbing (Mo) and coupling surfaces (Me) on the modular formwork (M); its length exceeds the thickness of two perimeter ribs (Mo) or coupling surfaces (Me).
  • said body (C1) has a portion (C11) of the end near the handle (C2) that is larger in diameter than the rest of the body (C1).
  • the handle (C2) at one end of the body (C1) is a portion lying at right angles to the body (C1) and may be shaped (C21) so as to provide a better grip.
  • the two or more radial projections (C3) at the opposite end of the body (C1) are diametrically opposite one another and preferably in the form of a segment of a ring.
  • Said radial projections (C3) are of such length and width that they can pass through the grooves (Mf1) in the holes (Mf) in the perimeter ribbing (Mo) and coupling surfaces (Me) on the modular formwork (M) when the key (C) is inserted in said holes (Mf).
  • a stable connection of the various modular formworks (M) is achieved by inserting said key (C) in the holes (Mf) in the perimeter ribbing (Mo) and coupling surfaces (Me) of the juxtaposed modular elements (M) so that the radial projections (C3) on said keys (C) both extend beyond the holes (Mf), and then rotating said keys (C) so that said radial projections (C3) are no longer aligned with the grooves (Mf1) in said holes (Mf).
  • FIG 7 shows an example of two modular formworks (M) connected by means of said key (C).
  • the keys (C) thus described are equally suitable for the connection of four modular formworks (M) juxtaposed so as to form a tube, or the connection of modular formworks (M) stacked so that one acts as an extension of the other, simply by inserting and rotating each key (C) in the aligned holes (Mf) of the juxtaposed formworks (M).
  • Figures 4a, 4b and 4c show three non-restrictive and non-exhaustive examples of combinations of various modular formworks (M, M', M") of different sizes allowing rectangular columns in different sizes to be obtained.
  • the modular formworks (M) enable a rapid stripping of the self-supporting formwork assembly soon after casting the concrete, simply by rotating and removing the keys (C) that hold the modular formworks (M) together.
  • the self-supporting formwork assembly prepared with the above-described modular formworks (M) and keys (C) need no specific external structures to maintain the alignment of the self-supporting formwork assembly as a whole because, thanks to the use of the keys (C), said formworks are connected together to produce a tubular structure that remains very stable during the casting operations.
  • Juxtaposing modular formworks (M, M', M) of the same height but different width enables the quick and easy preparation of rectangular self-supporting formwork assembly of the required dimensions.

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)
EP05425753A 2004-12-17 2005-10-24 Wiederverwenbare modulare einteilige Schalung zum Erzeugen von viereckigen oder rechteckigen Säulen Withdrawn EP1672143A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000316A ITPD20040316A1 (it) 2004-12-17 2004-12-17 Cassero modulare monolitico riutilizzabile per la realizzazione di colonne quadre o rettangolari

Publications (2)

Publication Number Publication Date
EP1672143A2 true EP1672143A2 (de) 2006-06-21
EP1672143A3 EP1672143A3 (de) 2008-05-28

Family

ID=35998594

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05425753A Withdrawn EP1672143A3 (de) 2004-12-17 2005-10-24 Wiederverwenbare modulare einteilige Schalung zum Erzeugen von viereckigen oder rechteckigen Säulen

Country Status (2)

Country Link
EP (1) EP1672143A3 (de)
IT (1) ITPD20040316A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3135291A1 (fr) 2022-05-06 2023-11-10 Leonel Das Neves Pataco Dispositif de coffrage pour linteaux et poteaux

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57180044U (de) * 1981-05-11 1982-11-15

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3260493A (en) * 1963-11-07 1966-07-12 George S Beckham Concrete form
SI1447496T1 (sl) * 2003-02-13 2017-08-31 Geoplast S.P.A. Znova uporabni modularni opaž za izdelavo stebrov

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57180044U (de) * 1981-05-11 1982-11-15

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3135291A1 (fr) 2022-05-06 2023-11-10 Leonel Das Neves Pataco Dispositif de coffrage pour linteaux et poteaux

Also Published As

Publication number Publication date
EP1672143A3 (de) 2008-05-28
ITPD20040316A1 (it) 2005-03-17

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