EP0667429A1 - Coffrage - Google Patents

Coffrage Download PDF

Info

Publication number
EP0667429A1
EP0667429A1 EP95100141A EP95100141A EP0667429A1 EP 0667429 A1 EP0667429 A1 EP 0667429A1 EP 95100141 A EP95100141 A EP 95100141A EP 95100141 A EP95100141 A EP 95100141A EP 0667429 A1 EP0667429 A1 EP 0667429A1
Authority
EP
European Patent Office
Prior art keywords
formwork
ceiling
wall
reinforcement
walling
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.)
Ceased
Application number
EP95100141A
Other languages
German (de)
English (en)
Inventor
Willibald Fischer
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.)
PECA-VERBUNDTECHNIK GmbH
Original Assignee
PECA-VERBUNDTECHNIK GmbH
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 PECA-VERBUNDTECHNIK GmbH filed Critical PECA-VERBUNDTECHNIK GmbH
Publication of EP0667429A1 publication Critical patent/EP0667429A1/fr
Ceased 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
    • E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
    • E04G15/06—Forms or shutterings for making openings, cavities, slits, or channels for cavities or channels in walls of floors, e.g. for making chimneys
    • E04G15/061—Non-reusable forms

Definitions

  • the invention relates to a formwork of the type explained in the preamble of claim 1.
  • Ceiling recesses in particular those that will later be used for pipe or cable penetrations and are closed in a second concreting section by embedding these pipes, have so far been clad with board formwork.
  • the formwork in the form of a box is placed on the lower slab formwork and the slab is poured outside the formwork in a first concreting section.
  • the pipes or the like are passed through the ceiling recess, personnel having to work standing on the ceiling cast in the first concreting section.
  • the recess was previously covered with boards after the first concreting section, on which the workers could stand.
  • DE-A-1 684 522 describes a formwork body made of plastic for producing ceiling recesses or the like.
  • the formwork body is in the form of a tube or a cuboid open on both sides, the open sides being coverable by covers which can be removed again.
  • both covers are made of the same, thin plastic material as the wall of the formwork body, and it is pointed out several times that the cover is relatively thin, for example in order to be able to cut holes.
  • Such a cover is therefore not suitable for forming an accident-proof fall protection device, in particular if the inside diameter of the formwork body is relatively large.
  • the document does not show how the problem of reinforcement is solved.
  • a grating is known, as it is used to cover concrete shafts or the like.
  • the grating has a frame with bars attached to the frame, the frame containing a Z-profile so that it can be hooked into the concrete shaft. How the shaft is made is not described.
  • the document therefore shows neither a formwork nor a fall protection as they have to be used in the manufacture of ceiling recesses or the like.
  • DE-U-91 05 567 shows a plank frame for roof openings for skylights or skylights, which is also provided with an anti-theft device in the form of a grid.
  • the plank frame is placed on the surface of the ceiling around the ceiling opening and installed in the roof insulation.
  • the grille acts as a fall protection when roofing, when making the ceiling opening, as usual, a fall protection made of boards must be used.
  • the opening cross-section of the screed frame remains open. The document therefore describes neither formwork nor fall protection using a load-bearing reinforcement element.
  • the invention has for its object to provide a formwork with which ceiling recesses can be produced in a time-saving and accident-proof manner.
  • the use of a load-bearing reinforcement material as fall protection ensures that the ceiling recess is covered so that no accident can happen.
  • reinforcement elements can be machined and the tools required for this are available at every construction site, so that the necessary passage openings, if this is necessary at all, can be easily cut into the reinforcement elements.
  • the fall protection when pouring the ceiling recess in the second concreting section serves as reinforcement, so that it no longer has to be installed separately.
  • the formwork according to the invention is easy to install, since the covering and covering of the ceiling recess by wooden boards is eliminated.
  • Formwork and fall protection are expediently provided as a unit, so that the installation is made even easier.
  • the embodiment according to claim 4 improves the anchoring of the reinforcement element, which is important both for its function as a fall protection and for its function for the later reinforcement of the concrete in the ceiling recess.
  • the anchoring is further improved if the protruding areas of the reinforcement element are angled according to claim 5.
  • Claim 6 describes a particularly preferred, since particularly time-saving and accident-proof embodiment of the invention formwork.
  • the drawing shows a formwork 1 according to the invention with a box-like, four-sided formwork wall 2 in the size of the desired ceiling recess.
  • the formwork wall 2 not shown in the figure for reasons of clarity, consists of an expanded metal enclosed between transverse and longitudinal metal bars, as described for example in DE-PS 41 11 062, or of another perforated, i.e. limited permeable material.
  • the formwork wall 2 was produced by bending and welding a strip of this material.
  • the formwork wall 2 can have an anchoring bulge 3, which is shown in the figure only on the right side of the formwork wall 2, but can run all around.
  • a mesh mat 4 is welded, which consists of the usual transverse and longitudinal reinforcing bars.
  • the grid mat 4 is designed as a fall protection, i.e. the mesh mat 4 is stable through the use of reinforcing bars of sufficient cross-sectional size and its mesh openings are so small that a normal-sized foot can always rest on at least two support points.
  • a mesh size of 7.5x15cm has proven to be sufficient.
  • the grid mat 4 is dimensioned and welded to the formwork wall 2 in such a way that edge regions 4a of the grid mat 4 protrude laterally beyond the upper opening 2a and the formwork wall 2.
  • these protruding regions 4a are provided on all four sides of the formwork wall 2.
  • the protruding areas are angled, preferably approximately 45 ° , downward, ie in the direction of the formwork wall 2.
  • the formwork wall 2 can be embedded in a fiber concrete strip 5 for reasons of corrosion protection.
  • the formwork according to the invention is placed in front of the first concreting section at the location of the future recess on the usual lower slab formwork, the upper peripheral edge of the formwork wall possibly also being covered by a fiber-reinforced concrete or other concrete cover strip and kept at a distance from the later surface of the slab. Then, in a first concreting section, the ceiling is poured outside the recess. If the concrete of the first concreting section has hardened and can be walked on, the pipes, cable ducts or the like are guided through the cutout, the worker standing directly above the cutout on the grid mat 4 and being able to work there.
  • the pipes or cable ducts have dimensions that no longer fit through the grid openings, they can be enlarged without danger to the workers by pinching or sawing the reinforcement bars, in particular because of the firm connection of the grid mat to the formwork and its anchoring through the Adequate strength is guaranteed for protruding areas in the ceiling of the first concreting section, even if one or the other reinforcing bar should no longer span the ceiling recess.
  • the recess can then be poured immediately into the second concreting section, the protruding elements being embedded and the mesh mat 4 taking over the reinforcement of the concrete inside the recess.
  • the fall protection device according to the invention can also be used for formwork walls made of another material, for example wooden formwork.
  • the term "ceiling recess” is to be understood relatively broadly and encompass all recesses in a horizontal, concrete surface where the described risk of accidents exist.
  • reinforcement bars or parallel, parallel reinforcement bars can be used, provided that they are sufficiently load-bearing and do not favor getting stuck with the foot.

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)
EP95100141A 1994-02-11 1995-01-05 Coffrage Ceased EP0667429A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9402323U DE9402323U1 (de) 1994-02-11 1994-02-11 Schalung
DE9402323U 1994-02-11

Publications (1)

Publication Number Publication Date
EP0667429A1 true EP0667429A1 (fr) 1995-08-16

Family

ID=6904488

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95100141A Ceased EP0667429A1 (fr) 1994-02-11 1995-01-05 Coffrage

Country Status (2)

Country Link
EP (1) EP0667429A1 (fr)
DE (1) DE9402323U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2226449A3 (fr) * 2009-03-04 2013-04-24 SCHÖCK BAUTEILE GmbH Dispositif de coffrage et procédé de formation d'un évidement lors du coulage d'un composant
DE102019122205A1 (de) * 2019-08-19 2021-02-25 Burkhard Krüger Aufblasbarer Schalungskörper

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1433261A (fr) * 1965-05-18 1966-03-25 Transformation Des Plastiques Costières pour coupoles ou lanterneaux et procédé pour leur mise en oeuvre
DE1684522A1 (de) * 1966-10-13 1970-03-26 Erich Wegner Verlorener Schalungskoerper fuer den Betonbau
GB2030203A (en) * 1978-09-20 1980-04-02 Rdl Eng Services & Sales Co Lt Forming drainage passages
DE8910090U1 (fr) * 1989-08-23 1990-02-08 Wilhelm Woeste Nachfolger, 5800 Hagen, De
DE9105567U1 (fr) * 1991-05-04 1991-10-02 Gruen Gmbh Spezialmaschinenfabrik, 5901 Wilnsdorf, De

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1433261A (fr) * 1965-05-18 1966-03-25 Transformation Des Plastiques Costières pour coupoles ou lanterneaux et procédé pour leur mise en oeuvre
DE1684522A1 (de) * 1966-10-13 1970-03-26 Erich Wegner Verlorener Schalungskoerper fuer den Betonbau
GB2030203A (en) * 1978-09-20 1980-04-02 Rdl Eng Services & Sales Co Lt Forming drainage passages
DE8910090U1 (fr) * 1989-08-23 1990-02-08 Wilhelm Woeste Nachfolger, 5800 Hagen, De
DE9105567U1 (fr) * 1991-05-04 1991-10-02 Gruen Gmbh Spezialmaschinenfabrik, 5901 Wilnsdorf, De

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2226449A3 (fr) * 2009-03-04 2013-04-24 SCHÖCK BAUTEILE GmbH Dispositif de coffrage et procédé de formation d'un évidement lors du coulage d'un composant
DE102019122205A1 (de) * 2019-08-19 2021-02-25 Burkhard Krüger Aufblasbarer Schalungskörper

Also Published As

Publication number Publication date
DE9402323U1 (de) 1995-06-08

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