CA1148378A - Formwork board consisting of parts which fit together to form a rectangle - Google Patents
Formwork board consisting of parts which fit together to form a rectangleInfo
- Publication number
- CA1148378A CA1148378A CA000380665A CA380665A CA1148378A CA 1148378 A CA1148378 A CA 1148378A CA 000380665 A CA000380665 A CA 000380665A CA 380665 A CA380665 A CA 380665A CA 1148378 A CA1148378 A CA 1148378A
- Authority
- CA
- Canada
- Prior art keywords
- formwork
- formwork board
- parts
- webs
- abutment
- 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
Links
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
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/08—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring
- E04G11/10—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring of elements without beams which are mounted during erection of the shuttering to brace or couple the elements
-
- 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
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/08—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring
- E04G11/087—Fill-in form panels in the plane of two adjacent forms
-
- 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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/04—Connecting or fastening means for metallic forming or stiffening elements, e.g. for connecting metallic elements to non-metallic elements
- E04G17/042—Connecting or fastening means for metallic forming or stiffening elements, e.g. for connecting metallic elements to non-metallic elements being tensioned by threaded elements
-
- 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
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)
- Polishing Bodies And Polishing Tools (AREA)
- Paints Or Removers (AREA)
- Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
Abstract
ABSTRACT
A formwork board is made up of at least two formwork board parts fitting together, whilst the separating line between these two formwork board parts is defined by abutment webs, straps or the like which, in cross section, are located in an inclined position relative to the formwork skin of the form-work board and to the outer edge webs of these formwork board parts. Prefer-ably, three formwork board parts fit together to form a rectangle. The formwork board part whose abutment webs form an obtuse angle with the formwork skin can be removed first during the stripping of the forms, thus producing a corres-pondingly wide form-removing gap. The removal of this first part of the formwork board is made easier by the shape resulting from the inclined arrange-ment of the abutment webs. Thus, the forms can readily be removed even between two outgoing walls, in shafts or the like.
A formwork board is made up of at least two formwork board parts fitting together, whilst the separating line between these two formwork board parts is defined by abutment webs, straps or the like which, in cross section, are located in an inclined position relative to the formwork skin of the form-work board and to the outer edge webs of these formwork board parts. Prefer-ably, three formwork board parts fit together to form a rectangle. The formwork board part whose abutment webs form an obtuse angle with the formwork skin can be removed first during the stripping of the forms, thus producing a corres-pondingly wide form-removing gap. The removal of this first part of the formwork board is made easier by the shape resulting from the inclined arrange-ment of the abutment webs. Thus, the forms can readily be removed even between two outgoing walls, in shafts or the like.
Description
8~
This invention relates to a formwork board having webs extending at right angles to the formwork skin, in the edge areas, these webs forming end faces and having points of attachment for secwring to an adjacent formwork board, the formwork hoard consisting of parts which have obl:ique edges a.t least in certain areas,to facilitate the removal of the forms, these parts fitting to-gether to form a rectangle.
~ formwork board of this kind is known from German Patent 12 6~ 735.
In this patent, two wedge-type Eormwork boards are provided which, in the operating position, together form a rectangle. Longitudinal displacement of a wedge-type ormwork board of this kind loosens the formwork and especially internal formwork, during the removal of the forms. However, this only operates if there is enough space for this. longitudinal displacement of a wedge-type formwork board in th~ longitudinal direction o the formwork. Furthe:rmore, remo~al of the forms is dieficult ~n such a case, in spite Oe the wedge-type construction, ~ince this longitudinal displacement has to be effected virtually in the plane of concreting, with the result that corresponding forces of adhesion between the concrete and the ~edge-type :Eormwork board may offer con-siderable resistance.
The object Gf the inyention is therefore to provide a formwork board of the kind referred to hereinbe~ore, which can be removed from the concrete : without difficu;lty and which facilitates the removal of the forms, for example, between two outgoing walls, in shafts or the like, without any need for displacement in the plane ~f concreting.
~ccording to the invention there is provided a formwork board having outer edge webs extending at right angles to a formwork skin in outer edge areas of the board, these webs forming end faces and having points of attachment for securing to an adjacent formwork board, the formwork board consisting of a ~.. ,~ .
3'7~3 plurality of parts which have oblique edges at least in certain areas, to facilitate the removal of the forms, these parts fitting together, characterised in that any separating line between parts of the formwork board is defined by abutment webs, straps or the like which, in transverse cross seCtiQn, are located in an oblique position relative to the formwork skin and the outer edge webs and have attach~ent points for securing the parts together.
~ onsequently, thanks- to the overall inwardly tapered cross section of one of the parts of the formwork board, during removal of the forms it is easy to mo~e one of ~hese parts away from the concreted surface, thus making room for the re~oval of the other formwork boards. A formwork board of this kind can therefore facilitate the stripping of the forms even if a limitation, such as a ceillng or the like, for example, is immediately adjacent to this formwork board.
Advantageously, when the formwork skins of the parts of the formwork board are in alignment, the securing points prov~ded on the abutment webs or the like coincide and are ln the securing position. The abutment webs or the like may contain holes for through-bolts or the like. ~ppropriately, the holes in the abutment ~ebs or the like correspond in shape and size to those in the outer edge webs of the ~ormwork ~oard.
Manufacture of the formwork hoard is made easier if the separating lines extend parallel to the edges thereof. Certainly, it would be possible for the separating line to extend diagonally, so that the formwork parts would not only haYe an inwardly tapered cross section but would also have a tapered longi-tudinal construction, but this is not necessar~, since the movement for detach-ing the inwardly tapered part of the formwork board may occur outwardly away from the concreted surface.
The parts for~ing the for~ork board may be of different widths and the abutment web of one part ~ay define an obtuse angle with the formwork sk m
This invention relates to a formwork board having webs extending at right angles to the formwork skin, in the edge areas, these webs forming end faces and having points of attachment for secwring to an adjacent formwork board, the formwork hoard consisting of parts which have obl:ique edges a.t least in certain areas,to facilitate the removal of the forms, these parts fitting to-gether to form a rectangle.
~ formwork board of this kind is known from German Patent 12 6~ 735.
In this patent, two wedge-type Eormwork boards are provided which, in the operating position, together form a rectangle. Longitudinal displacement of a wedge-type ormwork board of this kind loosens the formwork and especially internal formwork, during the removal of the forms. However, this only operates if there is enough space for this. longitudinal displacement of a wedge-type formwork board in th~ longitudinal direction o the formwork. Furthe:rmore, remo~al of the forms is dieficult ~n such a case, in spite Oe the wedge-type construction, ~ince this longitudinal displacement has to be effected virtually in the plane of concreting, with the result that corresponding forces of adhesion between the concrete and the ~edge-type :Eormwork board may offer con-siderable resistance.
The object Gf the inyention is therefore to provide a formwork board of the kind referred to hereinbe~ore, which can be removed from the concrete : without difficu;lty and which facilitates the removal of the forms, for example, between two outgoing walls, in shafts or the like, without any need for displacement in the plane ~f concreting.
~ccording to the invention there is provided a formwork board having outer edge webs extending at right angles to a formwork skin in outer edge areas of the board, these webs forming end faces and having points of attachment for securing to an adjacent formwork board, the formwork board consisting of a ~.. ,~ .
3'7~3 plurality of parts which have oblique edges at least in certain areas, to facilitate the removal of the forms, these parts fitting together, characterised in that any separating line between parts of the formwork board is defined by abutment webs, straps or the like which, in transverse cross seCtiQn, are located in an oblique position relative to the formwork skin and the outer edge webs and have attach~ent points for securing the parts together.
~ onsequently, thanks- to the overall inwardly tapered cross section of one of the parts of the formwork board, during removal of the forms it is easy to mo~e one of ~hese parts away from the concreted surface, thus making room for the re~oval of the other formwork boards. A formwork board of this kind can therefore facilitate the stripping of the forms even if a limitation, such as a ceillng or the like, for example, is immediately adjacent to this formwork board.
Advantageously, when the formwork skins of the parts of the formwork board are in alignment, the securing points prov~ded on the abutment webs or the like coincide and are ln the securing position. The abutment webs or the like may contain holes for through-bolts or the like. ~ppropriately, the holes in the abutment ~ebs or the like correspond in shape and size to those in the outer edge webs of the ~ormwork ~oard.
Manufacture of the formwork hoard is made easier if the separating lines extend parallel to the edges thereof. Certainly, it would be possible for the separating line to extend diagonally, so that the formwork parts would not only haYe an inwardly tapered cross section but would also have a tapered longi-tudinal construction, but this is not necessar~, since the movement for detach-ing the inwardly tapered part of the formwork board may occur outwardly away from the concreted surface.
The parts for~ing the for~ork board may be of different widths and the abutment web of one part ~ay define an obtuse angle with the formwork sk m
- 2 -., .
.
.
3~71~3 adjoining its edge nearest the concrete. This ensures that the broader part widens out, in cross section, away from the formwork skin, so that this broader part is removed first from the formwork assembly. The form-removing gap thus formed is correspondingly greater. It is particularly advantageous iE the abutment web of one part of the formwork board defines an angle of 135 with the form~ork skin, whilst the abutment ~eb of the other part of the formwork board defines an angle of 45Q with its formwork skin. This produces, on the one hand, a favourable taper for the formwork part which is to be removed first and also makes production easier, since as a rule an angle of 45 is particularly easy to measure out and produce. ~oreo~er, these webs are also made relatively accessible or the securing members.
The abutment ~eb o the narrower part of the formwork board ~if there is a narro~er part) may extend ~rom the formwork skin to the outer edge web.
~s a result, this formwork board part has a virtually triangular cross section, so that the wider formwork part can make opt:imum use of the total width of the fQrmwork board, so as to permlt the largest possible form-removing gap.
The overall width of the parts in the operating position may corres-pond to a standard grid measurement used ln the building industry, preferably about 25 cm. This will then enable the formwork boards to fit the standard dimensions used in building.
The invention is hereinafter explained in more detail, with its essential $eatures, with reference to the drawings, wherein:
Figure 1 is a 5chematic plan view of a formwork in the region of two outgoing walls, Figure 2 ls~ a cross section, on an enlarged scale, through a formwork board according to the invention, which consists of two parts which have oblique edges in certain areas to facilitate the remo~al of the forms, ~ ~ ' ,, ~ . . : -37~
Figure 3, on the same sheet as Figure 1, is a schematic view of a ceil-ing formwork, ~herein the form~ork board according to the inventio~ is provided for forming a form-removing joint, and Figure 4 is a representation corresponding to Figure 2 of an alter-native embodiment.
During remDval of formwork 1 between two outgoing walls 2, in shafts or the like, problems may arise in removing the forms, on account of the pres-sures occurring during the concreting. Ln the first embodlment, therefore, a formwork board 3 is provided inside the formwork 1, said formwork board 3 con-sisting of two parts 4 and 5 which are partially inwardly tapered in construc-tion and which fit together to form a formwork rectangle. This formwork board 3 is provided, on its edges, with webs 6 forming end faces and extending at right angles to the surface which is to be c~ncretedt these ~ebs having points of a~tachment for securing to the adjacent formwork boards 7. m is is cle æ ly shGwn in Figure 2, ~1 which these points of attachment are in the form of holes 8 or through-bolts 9.
According to the invention, the separating line 10 between the two parts 4 and 5 of the form~ork board is defined by abutment webs 12 which, in cross section, are located in an inclined position relative to the formwork skin 11 and to the outer edge webs 6~ me abutment webs 12 may be for~ed from sheet metal. In the e~bodiment shcwn, at least the abutment web 12 of the part 4 of the form~ark board is continuous over its entire length. Advantageously, this is also true of the abutment web 12 of the other part 5 of the form~ork board.
~ever, for connecting the two parts 4 and S, it ~y also be suficient to pro-vide only web portions, i.e. individual straps or the likel in certain areas, so as to make room for a point of attachment 13. When the formwork skin 11 of the bwo parts 4 and 5 is in alignment, -the points of attachment 13 on the abutment webs 12 adjoining the separating line 10 coincide with one another and are - ~ : .
~: - ~ , :,. .
:
83~8 in the securing position, the points of attachment 13 in the emhodiment consis.ting of holes for through-bolts ~. The holes in the abutment webs 12 correspond in shape and size to those provided in the edge webs 6, so that the through-bolts 9 can be the same for both methods of securing. This makes storage easier.
Since t.he removal of the forms starts by reLeasing the appropriate connections and then removing the part 4 in the direction of the arrow Pf 1 (~igures 2 and 3~, to facilitate the removal of the forms it is sufficient if the separating l~ne 10 of the form~ork board 3 extends parallel to the edges and edge webs 6 thereo$.
The abutment ~ebs 12, like the edge webs 6, may be pro~ided with keyhole-shaped holes 8 and 13, respectively, for the securing bolts 9, whilst these bolts ~ may be provided, on the one hand, with cross-pins 14 and, on the other hand, with a counter-s-top 15 for holding together the abutment webs or edge webs coming into contact, these bolts being capable of being rotated into the securing position shown, aEter being inserted. Thus, here again, the securing bolts ~ already available for use ~ith numerous formworks of this kind may also be used for assembling the $ormwork board 3 and also for securing the t~o parts 4 and 5 to each other.
The two parts 4 and 5 constituting the formwork board 3 are of dif-ferent widths in the embodiment and the abutment web 12 of the wider part 4 defines-an ~btuse angle ~ith the form~ork skin 11 adjoining its edge 16 nearest the concrete. In the embodiment shown, this angle is 135. The abutment web 12 of the narro~er part 5 of the formwork board thus deines an angle of 45 with its form~ork skin part, so that the two webs 12 abut each other in the operating position and form the re~uired abutment whilst simultaneously reinforcing the two-part formwork board. Conversely, the part 4 of the formwork board which is to he removed first, with the abutment ~eb 12 mounted at an obtuse angle, may :
~ " :
also he -the same width as or narrower than the other part 5 of the formwork board.
Figures 2 and 3 also clearly show that the abutment web 12 of the part 5 of the formwork board extends from the formwork skin 11 sub~tantially to the outer edge 17 of the associated edge web 6, with the result that the part 5 of the formwork board is virtually triangular in cross section. As a result, this part is made relatively rigid, so that its additional reinforcement will at least partially compensate for any weakening of the ~ormwork board 3 caused by the separating line lQ, and in addition the wider part 4 of the formwork board is thus made as wide as possible, resulting in a correspondingly large form-remoYing gap after it has been removed.
In the embodiment illustrated, the formwork skin 11 of the two parts
The abutment ~eb o the narrower part of the formwork board ~if there is a narro~er part) may extend ~rom the formwork skin to the outer edge web.
~s a result, this formwork board part has a virtually triangular cross section, so that the wider formwork part can make opt:imum use of the total width of the fQrmwork board, so as to permlt the largest possible form-removing gap.
The overall width of the parts in the operating position may corres-pond to a standard grid measurement used ln the building industry, preferably about 25 cm. This will then enable the formwork boards to fit the standard dimensions used in building.
The invention is hereinafter explained in more detail, with its essential $eatures, with reference to the drawings, wherein:
Figure 1 is a 5chematic plan view of a formwork in the region of two outgoing walls, Figure 2 ls~ a cross section, on an enlarged scale, through a formwork board according to the invention, which consists of two parts which have oblique edges in certain areas to facilitate the remo~al of the forms, ~ ~ ' ,, ~ . . : -37~
Figure 3, on the same sheet as Figure 1, is a schematic view of a ceil-ing formwork, ~herein the form~ork board according to the inventio~ is provided for forming a form-removing joint, and Figure 4 is a representation corresponding to Figure 2 of an alter-native embodiment.
During remDval of formwork 1 between two outgoing walls 2, in shafts or the like, problems may arise in removing the forms, on account of the pres-sures occurring during the concreting. Ln the first embodlment, therefore, a formwork board 3 is provided inside the formwork 1, said formwork board 3 con-sisting of two parts 4 and 5 which are partially inwardly tapered in construc-tion and which fit together to form a formwork rectangle. This formwork board 3 is provided, on its edges, with webs 6 forming end faces and extending at right angles to the surface which is to be c~ncretedt these ~ebs having points of a~tachment for securing to the adjacent formwork boards 7. m is is cle æ ly shGwn in Figure 2, ~1 which these points of attachment are in the form of holes 8 or through-bolts 9.
According to the invention, the separating line 10 between the two parts 4 and 5 of the form~ork board is defined by abutment webs 12 which, in cross section, are located in an inclined position relative to the formwork skin 11 and to the outer edge webs 6~ me abutment webs 12 may be for~ed from sheet metal. In the e~bodiment shcwn, at least the abutment web 12 of the part 4 of the form~ark board is continuous over its entire length. Advantageously, this is also true of the abutment web 12 of the other part 5 of the form~ork board.
~ever, for connecting the two parts 4 and S, it ~y also be suficient to pro-vide only web portions, i.e. individual straps or the likel in certain areas, so as to make room for a point of attachment 13. When the formwork skin 11 of the bwo parts 4 and 5 is in alignment, -the points of attachment 13 on the abutment webs 12 adjoining the separating line 10 coincide with one another and are - ~ : .
~: - ~ , :,. .
:
83~8 in the securing position, the points of attachment 13 in the emhodiment consis.ting of holes for through-bolts ~. The holes in the abutment webs 12 correspond in shape and size to those provided in the edge webs 6, so that the through-bolts 9 can be the same for both methods of securing. This makes storage easier.
Since t.he removal of the forms starts by reLeasing the appropriate connections and then removing the part 4 in the direction of the arrow Pf 1 (~igures 2 and 3~, to facilitate the removal of the forms it is sufficient if the separating l~ne 10 of the form~ork board 3 extends parallel to the edges and edge webs 6 thereo$.
The abutment ~ebs 12, like the edge webs 6, may be pro~ided with keyhole-shaped holes 8 and 13, respectively, for the securing bolts 9, whilst these bolts ~ may be provided, on the one hand, with cross-pins 14 and, on the other hand, with a counter-s-top 15 for holding together the abutment webs or edge webs coming into contact, these bolts being capable of being rotated into the securing position shown, aEter being inserted. Thus, here again, the securing bolts ~ already available for use ~ith numerous formworks of this kind may also be used for assembling the $ormwork board 3 and also for securing the t~o parts 4 and 5 to each other.
The two parts 4 and 5 constituting the formwork board 3 are of dif-ferent widths in the embodiment and the abutment web 12 of the wider part 4 defines-an ~btuse angle ~ith the form~ork skin 11 adjoining its edge 16 nearest the concrete. In the embodiment shown, this angle is 135. The abutment web 12 of the narro~er part 5 of the formwork board thus deines an angle of 45 with its form~ork skin part, so that the two webs 12 abut each other in the operating position and form the re~uired abutment whilst simultaneously reinforcing the two-part formwork board. Conversely, the part 4 of the formwork board which is to he removed first, with the abutment ~eb 12 mounted at an obtuse angle, may :
~ " :
also he -the same width as or narrower than the other part 5 of the formwork board.
Figures 2 and 3 also clearly show that the abutment web 12 of the part 5 of the formwork board extends from the formwork skin 11 sub~tantially to the outer edge 17 of the associated edge web 6, with the result that the part 5 of the formwork board is virtually triangular in cross section. As a result, this part is made relatively rigid, so that its additional reinforcement will at least partially compensate for any weakening of the ~ormwork board 3 caused by the separating line lQ, and in addition the wider part 4 of the formwork board is thus made as wide as possible, resulting in a correspondingly large form-remoYing gap after it has been removed.
In the embodiment illustrated, the formwork skin 11 of the two parts
4 and 5 consists of sheet me~al. As a result, ths abutment webs 12 can be securely attached, e.g. by welding.
~igures 1 and 2 show that the formwork tie rods 18 each may extend in the region of the edge webs 6 of the formwork board 3, so that the wing nuts 19 partly engage over the formwork board 3. On removal of the forms, first these wing nuts 1~ are released, followed hy all the connecting bolts 9 along the inclined separating line 10. The thro~gh-bolts 9 on the edge webs 6 of the widerpart 4 of the formwork board are then removed. This formwork part 4 can then be removed in the direction of t~e arrow ~f 1, i.e. in a slightly oblique d~rection relatiYe to the concreted surface, this movement being made easier by its tapering shape in this cross sectional direction. After this part has been remoYed ~cf. the illustration shown in broken lines in ~igure 2), a sufficientlylarge form-removing gap is formed which ena~les the remainder of the formwork 1 to be removed without any difficulty. Longitudinal displacement along the concreted surface is avoided.
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The emhodiment according to ~igure 2 shows a formwork board -as described - consisting of two parts 4 and 5 which are detachably connected at the inclined separating line 10 in the position of use.
Figure 4 illustrates an alternative embodiment. For a better overview, identical parts, even with a slight alteration, have been provided with the same reference numerals as in Figure 2.
In this embodiment the formwork board 3 consists of parts 4, 5 - and 5a c~nd has two separating lines 10 inclined from the formwork skin 11 in cToss-section and extending away from one another for the detachable connection of the three parts 4, 5 and 5a. The two separating lines 10 in the embodiment are symmetrically disposed relative to the centre line M
extending at right angles to the formwork skin. In this way the removal of the forms can occur almost exactly at right angles to the concreted surface in the direction of the arrow Pf 2.
Substantial advantages of this arrangement with a middle formwork board part 4, which in cross-section corresponds approximately to an equal-sided trapezoid, result above all for shaft formworks if the tension points are not disposed symmetrically at the edge webs 6, viewed in the longitudinal direction of the formwork board.
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,
~igures 1 and 2 show that the formwork tie rods 18 each may extend in the region of the edge webs 6 of the formwork board 3, so that the wing nuts 19 partly engage over the formwork board 3. On removal of the forms, first these wing nuts 1~ are released, followed hy all the connecting bolts 9 along the inclined separating line 10. The thro~gh-bolts 9 on the edge webs 6 of the widerpart 4 of the formwork board are then removed. This formwork part 4 can then be removed in the direction of t~e arrow ~f 1, i.e. in a slightly oblique d~rection relatiYe to the concreted surface, this movement being made easier by its tapering shape in this cross sectional direction. After this part has been remoYed ~cf. the illustration shown in broken lines in ~igure 2), a sufficientlylarge form-removing gap is formed which ena~les the remainder of the formwork 1 to be removed without any difficulty. Longitudinal displacement along the concreted surface is avoided.
.. ~
- .. . . . .
-, . : - :
:~ - . . ., , ,: ,~ , . :
. - ~ . :
':
~:~ f~B~7E~
The emhodiment according to ~igure 2 shows a formwork board -as described - consisting of two parts 4 and 5 which are detachably connected at the inclined separating line 10 in the position of use.
Figure 4 illustrates an alternative embodiment. For a better overview, identical parts, even with a slight alteration, have been provided with the same reference numerals as in Figure 2.
In this embodiment the formwork board 3 consists of parts 4, 5 - and 5a c~nd has two separating lines 10 inclined from the formwork skin 11 in cToss-section and extending away from one another for the detachable connection of the three parts 4, 5 and 5a. The two separating lines 10 in the embodiment are symmetrically disposed relative to the centre line M
extending at right angles to the formwork skin. In this way the removal of the forms can occur almost exactly at right angles to the concreted surface in the direction of the arrow Pf 2.
Substantial advantages of this arrangement with a middle formwork board part 4, which in cross-section corresponds approximately to an equal-sided trapezoid, result above all for shaft formworks if the tension points are not disposed symmetrically at the edge webs 6, viewed in the longitudinal direction of the formwork board.
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,
Claims (16)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. Formwork board having outer edge webs extending at right angles to a formwork skin in outer edge areas of the board, these webs forming end faces and having points of attachment for securing to an adjacent formwork board, the formwork board consisting of a plurality of parts which have oblique edges at least in certain areas, to facilitate the removal of the forms, these parts fitting together, characterised in that any separating line between parts of the formwork board is defined by abutment webs, straps or the like which, in transverse cross section, are located in an oblique position relative to the formwork skin and the outer edge webs and have attachment points for securing the parts together.
2. Formwork hoard according to claim 1, characterised in that, when the formwork skins of the parts of the formwork board are in alignment, the points of attachment located on the abutment webs or the like coincide with one another and are in the securing position.
3. Formwork board according to claim 1, characterised in that the abut-ment webs or the like contain holes for through-bolts.
4. Formwork board according to claim 3, characterised in that the holes in the abutment webs or the like correspond in shape and size to those provided in the edge webs.
5. Formwork board according to claim 1, 2 or 3, characterised in that any separating line of the formwork board extends parallel to the outer edge webs thereof.
6. Formwork hoard according to claim 1, 2 or 3, characterised in that the abutment webs or the like are provided with keyhole-shaped holes for fixing bolts having, on the one hand, cross-pins and, on the other hand, a counter-stop these bolts being rotatable into a securing position after insertion.
7. Formwork board according to claim 1, 2 or 3, characterised in that an abutment web of one of the parts defines an obtuse angle with the formwork skin adjoining its edge nearest the concrete.
8. Formwork board according to claim 1, 2 or 3, characterised in that an abutment web of one part of the formwork board defines an angle of 135° with the formwork skin and an abutment web of another part of the formwork board defines an angle of 45° with its formwork skin.
9. Formwork board according to claim 1, 2 or 3, characterised in that the parts forming it are of different widths.
10. Formwork board according to claim 1, 2 or 3, characterised in that an abutment web of a narrower formwork board part extends from the formwork skin substantially to the outer edge of its edge web.
11. Formwork board according to claim 1, 2 or 3, characterised in that the formwork skin consists of sheet metal.
12. Formwork board according to claim 1, 2 or 3, characterised in that the abutment web of at least one part of the formwork board is continuous over the entire length thereof.
13. Formwork board according to claim 1, 2 or 3, characterised in that the overall width of the parts corresponds, in the operating position, to a standard grid dimension used in the building industry and is preferably about 25 cm.
14. Formwork board according to claim 1, 2 or 3, characterised in that it consists of two parts detachably connected at the oblique separating line in the position of use.
15. Formwork board according to claim 1, characterised in that it con-sists of three parts and has two separating lines inclined from the formwork skin in cross section and extending away from one another for the detachable connection of the three parts.
16. Formwork board according to claim 15, characterised in that the two separating lines are symmetrically disposed relative to a centre line extending at right angles to the formwork skin.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3024511.5 | 1980-06-28 | ||
| DE3024511A DE3024511C2 (en) | 1980-06-28 | 1980-06-28 | Formwork panel made up of two parts that complement each other to form a rectangle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1148378A true CA1148378A (en) | 1983-06-21 |
Family
ID=6105864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000380665A Expired CA1148378A (en) | 1980-06-28 | 1981-06-26 | Formwork board consisting of parts which fit together to form a rectangle |
Country Status (21)
| Country | Link |
|---|---|
| JP (1) | JPS5744064A (en) |
| AR (1) | AR227193A1 (en) |
| AT (1) | AT374874B (en) |
| AU (1) | AU539508B2 (en) |
| BE (1) | BE889394A (en) |
| BR (1) | BR8104072A (en) |
| CA (1) | CA1148378A (en) |
| CH (1) | CH651346A5 (en) |
| DE (1) | DE3024511C2 (en) |
| DK (1) | DK154520C (en) |
| ES (2) | ES268133Y (en) |
| FI (1) | FI67426C (en) |
| FR (1) | FR2485600A1 (en) |
| GB (1) | GB2078841B (en) |
| IL (1) | IL63135A (en) |
| IT (1) | IT1137941B (en) |
| MX (1) | MX152310A (en) |
| NL (1) | NL8103109A (en) |
| NO (1) | NO154761C (en) |
| PT (1) | PT73260B (en) |
| SE (1) | SE8104026L (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3312603A1 (en) * | 1982-04-15 | 1983-11-10 | Heinrich Dipl.-Ing. 4030 Ratingen Schliephacke | Multi-part intermediate piece arranged between shuttering elements |
| GB2168411B (en) * | 1984-12-13 | 1987-10-07 | Lee Yuan Ho | Formwork for casting concrete |
| US5552103A (en) * | 1995-01-18 | 1996-09-03 | Lee; Wen-Yuan | Form set-up and method for stripping upright form panels of the form set-up from a concrete unit |
| ES2130960B1 (en) * | 1996-09-18 | 2000-02-16 | Ulma C Y E S Coop | FRAME AND LATCH FOR MANUPORTABLE FORMWORK PANEL. |
| JP5085698B2 (en) * | 2010-08-18 | 2012-11-28 | 光洋商事株式会社 | Boxing formwork and boxing hole construction method |
| ES2527895B1 (en) * | 2013-07-29 | 2015-11-05 | Inveral, S.A. | Formwork for a hanging beam |
| WO2017054028A1 (en) * | 2015-09-30 | 2017-04-06 | Form 700 Pty Ltd | A formwork panel assembly |
| CN112302334B (en) * | 2020-10-12 | 2022-04-19 | 上海建工集团股份有限公司 | Core tube concrete wall folding template and use method thereof |
| CN114412162A (en) * | 2022-01-26 | 2022-04-29 | 晟通科技集团有限公司 | Formwork and formwork system |
| CN114382283B (en) * | 2022-02-28 | 2023-02-28 | 江苏华泰路桥建设集团有限公司 | Fast-assembling template for construction |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB853278A (en) * | 1958-05-27 | 1960-11-02 | Kwikform Ltd | Improvements in or relating to sectional shuttering applicable to building construction and other purposes |
| DE1264735B (en) * | 1958-09-20 | 1968-03-28 | Blivers Baugesellschaft M B H | Wall formwork, especially steel formwork for the concrete-Schuettbauweise |
| FR1278076A (en) * | 1960-10-25 | 1961-12-08 | Mobile device for junction of two formwork | |
| FR1536380A (en) * | 1967-07-05 | 1968-08-27 | Sateco Sa | Formwork device allowing walls to be erected perpendicular or parallel to the facades simultaneously with the corresponding floors |
| FR2031378A1 (en) * | 1969-02-19 | 1970-11-20 | Blaw Knox Cie Fse | |
| CH511995A (en) * | 1969-08-12 | 1971-08-31 | Helfenstein Gerhard | Internal formwork for buildings |
| GB1297040A (en) * | 1969-08-15 | 1972-11-22 | ||
| US3822853A (en) * | 1969-12-30 | 1974-07-09 | Shelley Enterprises | Apparatus for producing modular boxlike units |
| FR2059864A5 (en) * | 1970-07-07 | 1971-06-04 | Boussaguet Guy | |
| BE815327A (en) * | 1973-05-21 | 1974-09-16 | PROCESS OF SIMULTANEOUS WALL AND FLOOR CASTING WITH UNITEDE FORMWORK TUNNEL FOR THE PERFORMANCE OF THE PROCESS | |
| JPS55176939U (en) * | 1979-06-06 | 1980-12-18 |
-
1980
- 1980-06-28 DE DE3024511A patent/DE3024511C2/en not_active Expired
-
1981
- 1981-06-15 FI FI811860A patent/FI67426C/en not_active IP Right Cessation
- 1981-06-21 IL IL63135A patent/IL63135A/en not_active IP Right Cessation
- 1981-06-24 DK DK278881A patent/DK154520C/en not_active IP Right Cessation
- 1981-06-24 CH CH4169/81A patent/CH651346A5/en not_active IP Right Cessation
- 1981-06-25 GB GB8119566A patent/GB2078841B/en not_active Expired
- 1981-06-25 PT PT73260A patent/PT73260B/en not_active IP Right Cessation
- 1981-06-26 AT AT0284081A patent/AT374874B/en not_active IP Right Cessation
- 1981-06-26 IT IT22593/81A patent/IT1137941B/en active
- 1981-06-26 NO NO812199A patent/NO154761C/en unknown
- 1981-06-26 MX MX188038A patent/MX152310A/en unknown
- 1981-06-26 NL NL8103109A patent/NL8103109A/en active Search and Examination
- 1981-06-26 FR FR8112792A patent/FR2485600A1/en active Granted
- 1981-06-26 AU AU72199/81A patent/AU539508B2/en not_active Ceased
- 1981-06-26 AR AR285876A patent/AR227193A1/en active
- 1981-06-26 CA CA000380665A patent/CA1148378A/en not_active Expired
- 1981-06-26 SE SE8104026A patent/SE8104026L/en not_active Application Discontinuation
- 1981-06-26 ES ES1981268133U patent/ES268133Y/en not_active Expired
- 1981-06-26 BE BE0/205222A patent/BE889394A/en not_active IP Right Cessation
- 1981-06-26 JP JP56099556A patent/JPS5744064A/en active Granted
- 1981-06-26 BR BR8104072A patent/BR8104072A/en not_active IP Right Cessation
-
1982
- 1982-11-05 ES ES1982268363U patent/ES268363Y/en not_active Expired
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| Date | Code | Title | Description |
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| MKEX | Expiry |