EP0818287A1 - Mold for prefabricated concrete panels - Google Patents
Mold for prefabricated concrete panels Download PDFInfo
- Publication number
- EP0818287A1 EP0818287A1 EP96939948A EP96939948A EP0818287A1 EP 0818287 A1 EP0818287 A1 EP 0818287A1 EP 96939948 A EP96939948 A EP 96939948A EP 96939948 A EP96939948 A EP 96939948A EP 0818287 A1 EP0818287 A1 EP 0818287A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- panels
- formwork
- section
- ribs
- width
- 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.)
- Granted
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/17—Floor structures partly formed in situ
- E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0064—Moulds characterised by special surfaces for producing a desired surface of a moulded article, e.g. profiled or polished moulding surfaces
- B28B7/0085—Moulds characterised by special surfaces for producing a desired surface of a moulded article, e.g. profiled or polished moulding surfaces with surfaces for moulding chamfers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/10—Moulds with means incorporated therein, or carried thereby, for ejecting or detaching the moulded article
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/36—Linings or coatings, e.g. removable, absorbent linings, permanent anti-stick coatings; Linings becoming a non-permanent layer of the moulded article
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
- E04B5/04—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement
Definitions
- the technique of reinforced or prestressed concrete precast panels with an open section employed as structural floor slab elements in industrialized building systems corresponds basically to the so-called ⁇ -section precast panels formed by two longitudinal ribs and two lateral and one central flanges.
- the ⁇ -section precast panels technique was first developed for ribbed floor slabs supported on precast beams. Next it was extended to composite floors comprising the precast ribbed slab units and the reinforced concrete plane beams, in which the overall depth of ribbed floor slabs equals that of the concrete plane beams, cast in situ together with reinforced concrete over the panels.
- the proposed invention refers to the development of reinforced and prestressed concrete precast panel units with an open section, of the so-called inverted channel section type of panels, formed by two longitudinal ribs, or panel beams, and one central flange, taking into account the adecuate fire resistance requirements for floor systems.
- the problem when using the technique of reinforced concrete precast panels with ⁇ -section is the insufficient width of usual panel ribs to hold the maximum action-effects in the floor ribbed slabs, during the occurence of a standard fire in the area limited by the floors, taking into account both the reduction of steel reinforcement and concrete strenghts for the high temperatures reached in the fire and the temperature distribution on these materials in the floor cross section.
- the desideratum from the fire resistance point of view is to make the precast panels with an inverted channnel open section having a strict rectangular section exterior form, ensuring that the lateral sides of panel ribs are plane and parallel.
- each beam formed by the pair of ribs of coupled panels is equivalent to a double-width beam.
- the equivalence means that there are the same boundary conditions for maximum temperatures on the surfaces directly attacked by fire and the same temperature distribution in both the resistent concrete core within the cross section and the steel reinforcement, and therefore the resulting floor elements have mechanical strength analogous to that of double-width beam floor.
- reinforced or pretressed concrete precast panels is associated, because of fast production, eficiency and economy, to fabrication of open section panels in a fixed linear formwork bench, given the advantages for industrial fabrication of continuous placing and compacting of the concrete and posterior straight extraction of precast panels from the formwork.
- the problem is, therefore, to obtain the reinforced or prestressed concrete precast panels with an inverted channel section having a strict rectangular section external form, ensuring also that lateral panel sides are plane, in a fixed longitudinal formwork bench, from which paneles can be taked out without moving any part of the fromwork.
- the procedure that solves this problem consists in placing along the formwork two stiff linear elements of triangular shaped section with a right angle, being the opposed side to this angle plane or near-plane as a cylindric concave form. These elements are placed inside the formwork in a way such that the right angle edge of each element lies exactly on the edge of corner formed by planes molding the lateral and lower sides of panel ribs.
- this arrangement determines that precast panels can be taken out by straight and vertical pulling from hooks previously anchored in them, avoiding the failure of panels due of friction forces against the formwork.
- Figure 1 represents how these linear elements are disposed in the rectangular section exterior form which molds the panels in the formwork.
- the symbol e indicates the direction for extraction of paneles.
- the symbol 1 represents the linear pieces with a triangular section, and symbols 2 and 3 designate respectively the initial inclined fracture plane and the more elevated potential parallel fracture plane, in which the failure stresses will not be reached.
- Figure 2 represents the arrangement of two precast panel with the inverted channel section which are jointly placed in the floor which form a double-ribbed slab beam with the alteration made by the linear pieces 1.
- the symbol f represents the three directions in which the standardised fire attacks the double-ribbed slab beam.
- Symbols 4 and 5 design respectively the construction joint between panels and the reinforced concrete over the panel in the floor.
- Symbol 6 corresponds to the cross holes, which are disposed where appropiate to open ways through the slab ribs to avoid accumulation of gases under the floor.
- Figure 3 represents one realization of a formwork bench for fabrication of precast panels with inverted channel section.
- the parallel lateral sides of the panels are molded by the formwork elements formed by U-section steel profiles with parallel flanges and the smooth and corrosion protected steel plates covering the inside web faces in the formwork, respectively denoted by symbols 7 and 8.
- the mold is completed with the steel plates of the same kind, remarked as the symbol 9, which are folded according to the required form for the ribs and flange of panels, and fixed on the stiffness cross plates of the formwork denoted by symbol 10.
- the symbol 11 designs the longitudinal main beams of the formwork bench frame which rest anchored on metallic supports through elastomeric blocks, represented respectively by symbols 12 and 13.
- the reinforced an prestressed concrete precast panels are fabricated by continuous placing, compacting and vibration and curing of the concrete, and posterior extraction by means of a traveller crane which vertically pulls the panels out from the formwork. These are then stored until the age they reach the adequate strength to be handled and arranged on the building floors.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Electromagnetism (AREA)
- Physics & Mathematics (AREA)
- Structural Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- Building Environments (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Rod-Shaped Construction Members (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Abstract
The concern is the development of reinforced or prestressed concrete precast
panels having an open section with inverted channel form, ensuring
suitable fire resistances of floor systems built with them.
The width of panel ribs in current techniques is insufficient to provide fire resistent floors. This can be achieved employing inverted channel-section panels which form double-wide-ribbed slabs, with the same weight for precast elements.
The problem is how to obtain such panels with a strickly rectangular exterior form to ensure that lateral sides are plane and parallel to get the smallest joints between coupled panels in floors so that their floor fire resistance are that of slabs with double-width ribs.
The invention solves it by obtaining panels in a fixed continuous formwork bench, without moving any formwork part to take them out.
Fabrication of this kind of panels, the procedure and the device to produce inverted channel-section panels are revendicated.
The width of panel ribs in current techniques is insufficient to provide fire resistent floors. This can be achieved employing inverted channel-section panels which form double-wide-ribbed slabs, with the same weight for precast elements.
The problem is how to obtain such panels with a strickly rectangular exterior form to ensure that lateral sides are plane and parallel to get the smallest joints between coupled panels in floors so that their floor fire resistance are that of slabs with double-width ribs.
The invention solves it by obtaining panels in a fixed continuous formwork bench, without moving any formwork part to take them out.
Fabrication of this kind of panels, the procedure and the device to produce inverted channel-section panels are revendicated.
Description
The technique of reinforced or prestressed concrete precast panels with an open
section employed as structural floor slab elements in industrialized building systems,
corresponds basically to the so-called Π-section precast panels formed by two
longitudinal ribs and two lateral and one central flanges.
The Π-section precast panels technique was first developed for ribbed floor slabs
supported on precast beams. Next it was extended to composite floors comprising
the precast ribbed slab units and the reinforced concrete plane beams, in which the
overall depth of ribbed floor slabs equals that of the concrete plane beams, cast in
situ together with reinforced concrete over the panels.
The proposed invention refers to the development of reinforced and prestressed
concrete precast panel units with an open section, of the so-called inverted channel
section type of panels, formed by two longitudinal ribs, or panel beams, and one
central flange, taking into account the adecuate fire resistance requirements for
floor systems.
The problem when using the technique of reinforced concrete precast panels
with Π-section is the insufficient width of usual panel ribs to hold the maximum
action-effects in the floor ribbed slabs, during the occurence of a standard fire
in the area limited by the floors, taking into account both the reduction of steel
reinforcement and concrete strenghts for the high temperatures reached in the fire
and the temperature distribution on these materials in the floor cross section.
Such a problem can be solved without increasing the weight of precast units,
from some mimimum width of panel ribs, by employing the new type of panels with
an inverted channel section which double the width of ribs of floor slabs that result
when they are coupled. This solution keeps the advantages of industrialized pre-fabrication
of panels and efficient transportation, by avoiding an overdimensioned
design of the fire resistent structures, making possible the use of usual cranes to
handle the precast units in the construction process.
In this case, the desideratum from the fire resistance point of view is to make
the precast panels with an inverted channnel open section having a strict rectangular
section exterior form, ensuring that the lateral sides of panel ribs are plane
and parallel.
In this way the minimum width for construction joints between the lateral sides
of coupled panels can be obtained at the working place; then it is possible to ensure
that, regarding the fire resistance in the most unfavourable case of simultaneous
action of fire on three slab rib sides, each beam formed by the pair of ribs of coupled
panels is equivalent to a double-width beam.
The equivalence means that there are the same boundary conditions for maximum
temperatures on the surfaces directly attacked by fire and the same temperature
distribution in both the resistent concrete core within the cross section and
the steel reinforcement, and therefore the resulting floor elements have mechanical
strength analogous to that of double-width beam floor.
Otherwise, if the exterior form of panels is not rectangular and the rib thickness
increases progressively from the bottom to facilitate the extraction of panels from
the formwork, the width of resulting construction joints cannot ensure the equivalence
of internal and external temperature distributions in the cross sections. Note
that this would be the case using the Π-section precast panels when cutting the
lateral flanges of the panels.
The technique of reinforced or pretressed concrete precast panels is associated,
because of fast production, eficiency and economy, to fabrication of open section
panels in a fixed linear formwork bench, given the advantages for industrial fabrication
of continuous placing and compacting of the concrete and posterior straight
extraction of precast panels from the formwork.
The problem is, therefore, to obtain the reinforced or prestressed concrete precast
panels with an inverted channel section having a strict rectangular section
external form, ensuring also that lateral panel sides are plane, in a fixed longitudinal
formwork bench, from which paneles can be taked out without moving any
part of the fromwork.
The procedure that solves this problem consists in placing along the formwork
two stiff linear elements of triangular shaped section with a right angle, being the
opposed side to this angle plane or near-plane as a cylindric concave form. These
elements are placed inside the formwork in a way such that the right angle edge
of each element lies exactly on the edge of corner formed by planes molding the
lateral and lower sides of panel ribs.
Once the suitable angles and dimensions of the triangular elements as well as the
convenient stiffness of formwork elements are fixed, this arrangement determines
that precast panels can be taken out by straight and vertical pulling from hooks
previously anchored in them, avoiding the failure of panels due of friction forces
against the formwork.
Indeed, when taking the panel out from the formwork, the latter becomes elastically
deformed laterally making the compression normal forces and the friction
vertical forces against the panel to be located near the lateral corners inside the
formwork. Moreover, stresses due to friction along the panels are concentrated just
in those zones near the fasteners stiffening the different elements of the formwork.
Both effects, developed when taking out the panels, would cause the shear fracture
of the concrete close to these zones, approximately according to an inclined failure
plane, parallel to the edge of each lateral inferior corner of the panels. Figure 1.
The position of the above mentioned stiff linear pieces in the formwork corners
raises the possible fracture plane, with the same angle for this plane than in the
fracture case; it increases considerably the area of potential fracture surface making
that normal and shear stresses on this surface, which are related to the same normal
and friction forces, become smaller than the failure stresses defined by the intrinsic
resistance curve of concrete at the age of extraction of panels.
Figure 1 represents how these linear elements are disposed in the rectangular
section exterior form which molds the panels in the formwork. In this figure the
symbol e indicates the direction for extraction of paneles. The symbol 1 represents
the linear pieces with a triangular section, and symbols 2 and 3 designate respectively
the initial inclined fracture plane and the more elevated potential parallel
fracture plane, in which the failure stresses will not be reached.
When the width of construction longitudinal joints between two ribs of coupled
panels is minimum and the reinforcement covers and spacement are adequate, then
the change in the initial rectangular section resulting when molding panels with
the linear triangular pieces, does not alter significatively the fire resistance of the
floor, maintaining the internal temperature distribution on the steel reinforcement
and the resistent concrete core in the cross section.
Figure 2 represents the arrangement of two precast panel with the inverted
channel section which are jointly placed in the floor which form a double-ribbed
slab beam with the alteration made by the linear pieces 1. In this figure the symbol
f represents the three directions in which the standardised fire attacks the double-ribbed
slab beam. Symbols 4 and 5 design respectively the construction joint
between panels and the reinforced concrete over the panel in the floor. Symbol 6
corresponds to the cross holes, which are disposed where appropiate to open ways
through the slab ribs to avoid accumulation of gases under the floor.
Figure 3 represents one realization of a formwork bench for fabrication of precast
panels with inverted channel section. The parallel lateral sides of the panels are
molded by the formwork elements formed by U-section steel profiles with parallel
flanges and the smooth and corrosion protected steel plates covering the inside
web faces in the formwork, respectively denoted by symbols 7 and 8. The mold is
completed with the steel plates of the same kind, remarked as the symbol 9, which
are folded according to the required form for the ribs and flange of panels, and fixed
on the stiffness cross plates of the formwork denoted by symbol 10. The symbol
11 designs the longitudinal main beams of the formwork bench frame which rest
anchored on metallic supports through elastomeric blocks, represented respectively
by symbols 12 and 13. In the same figure it is represented how the triangular linear
elements 1 are placed on the formwork and the cylindric elements non-adherent to
concrete are cross placed inside the formwork and adjusted to the folded steel plate
sides, to mold the panel holes 6, opening cross ways through the slab ribs in the
floors.
On this logitudinal formwork having an inverted channel open section, the reinforced
an prestressed concrete precast panels are fabricated by continuous placing,
compacting and vibration and curing of the concrete, and posterior extraction by
means of a traveller crane which vertically pulls the panels out from the formwork.
These are then stored until the age they reach the adequate strength to be handled
and arranged on the building floors.
Claims (1)
- The invention refers to the new depelopment of reinforced and prestressed concrete precast panels with an open section, of the so-called inverted channel section type, formed by two longitudinal ribs, or beams, and one central flange, which ensure that the fire resistance of the floor systems is that of a on-way slab with double width ribs, i.e. ribs that double their witdh when panels are coupled.
Basically, the technique of reinforced and prestressed concrete precast panels with an open section employed as structural elements in floor slabs corresponds to the Π-section panels formed by two longitudinal ribs and two lateral and one central flanges.
Because of fast production, eficiency and economy, the above technique is associated to fabrication of open section panels in a fixed linear formwork bench, given the advantages for industrial fabrication of continuous placing and compacting of the concrete and posterior straight pulling of precast panels from the formwork. In this technique, the procedure used to make easy the extraction of panels from the formwork is to increase the width of the panel ribs from the soffit, forming the lateral and lower sides a trapezoidal shape.
The problem in this technique is the insufficient width of usual ribs of panels to hold the maximum action-effects in the floor ribbed slabs, taking into account the reduction of strength of both steel reinforcement and concrete for the high temperatures reached in these materials during a fire.
The following exclusive properties and exploitations are revindicated as new and own's inventions:- [1] The industrial fabrication of reinforced or prestressed concrete precast panels of inverted channel section with a strictly rectangular external form, which are combined in the floor systems ensuring that their lateral sides are plane and parallel to minimizes the joint width between coupled panels, in which the fire resistance is that of the beam formed by the double-ribbed slab exposed to a standard fire on three sides. Figure 2.
- [2] The procedure to obtain reinforced or prestressed concrete precast panels with an inverted channel section having a strictly rectangular external form, forming longitudinal ribs with plane parallel lateral sides, molded on a fixed linear formwork bench from which panels can be taken out without failure once they are stiffly hardened by straight and vertical pulling, without moving any part of the mould or the formwork bench, what is based on the reduction of the concrete stresses due to compresion and friction forces against the panel by raising the potential shear fracture planes near their lower lateral edges by two linear stiff elements placed in each mould corner. Figure 1.
- [3] The device for production of reinforced or prestressed concrete precast panels
with an inverted channel section having a strictly rectangular external form, in a
fixed linear formwork bench from which the precast panels can be taked out without
failure, without moving any part of the mould or the formwork bench, and formed
by:
- (a) two linear stiff elements of triangular shaped section with a right angle, being the opposed side to this angle plane or near plane as a cylindric concave form, which are placed inside the mould in a way such that the right angle edge of each element lie exactly on the edge of the corner formed by the planes moulding lateral and lower sides of panels;
- (b) the formwork sides formed by U-section steel profiles with parallel flanges with a smooth and corrosion protected steel plate covering their webs and the steel plate of the same kind folded to shape the inside panel section with variable rib width; and where appropiate,
- (c) the cylindric elements non-adherent to concrete which are cross placed inside the formwork and adjusted to panel ribs sides, utilized for opening holes communicating the spaces between slab ribs in the floors. Figure 3.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES9502383 | 1995-12-01 | ||
| ES9502383 | 1995-12-01 | ||
| PCT/ES1996/000229 WO1997020666A1 (en) | 1995-12-01 | 1996-11-27 | Mold for prefabricated concrete panels |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0818287A1 true EP0818287A1 (en) | 1998-01-14 |
| EP0818287B1 EP0818287B1 (en) | 2002-10-09 |
Family
ID=8292378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96939948A Expired - Lifetime EP0818287B1 (en) | 1995-12-01 | 1996-11-27 | Mold for prefabricated concrete panels |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0818287B1 (en) |
| DE (1) | DE69624226T2 (en) |
| ES (1) | ES2179955T3 (en) |
| MX (1) | MX9706107A (en) |
| WO (1) | WO1997020666A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000077317A1 (en) * | 1999-06-09 | 2000-12-21 | Brentmuir Developments (1993) Limited | Concrete panel construction system |
| US6698150B1 (en) | 1998-06-09 | 2004-03-02 | Brentmuir Developments (1993) Limited | Concrete panel construction system |
| US7828544B2 (en) | 2004-11-26 | 2010-11-09 | Brentmuir Developments (1993) Limited | Concrete panel construction system and method of making panels |
| NL2004864C2 (en) * | 2010-06-09 | 2011-12-13 | Infra & B V | Moulds and methods for forming prefab concrete floor elements and prefab elements. |
| US9399867B2 (en) | 2009-04-07 | 2016-07-26 | Millwick Acquisition Corp. | Concrete panel corner connection |
| EP3298216A4 (en) * | 2015-05-21 | 2018-05-16 | Lifting Point Pre-Form Pty Limited | A module for a structure |
| CN108772944A (en) * | 2018-05-07 | 2018-11-09 | 安徽砼宇特构科技有限公司 | It is a kind of to facilitate fixed installation formula precast concrete case |
| CN114482375A (en) * | 2022-02-22 | 2022-05-13 | 杭州江润科技有限公司 | Integral joint type reinforced concrete laminated slab and construction method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109176862B (en) * | 2018-11-09 | 2023-09-29 | 新疆博壹市政工程有限责任公司 | Manufacturing equipment structure and manufacturing method of ribbed prestressed prefabricated bottom plate |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR886179A (en) * | 1942-08-29 | 1943-10-07 | Demoulding method and device | |
| BE756509A (en) * | 1969-09-23 | 1971-03-01 | Haller Hans | FLOOR CONSISTING OF PREFABRICATED ELEMENTS JUXTAPOSED AND MOLDED, AND PROCESS FOR THEIR MANUFACTURING |
| NL148528B (en) * | 1973-02-27 | 1976-02-16 | Kalkman Maschf En Handelsonder | DEVICE FOR THE MANUFACTURE OF A TILE WITH A CIRCULAR FACETED EDGE. |
| DE3109108A1 (en) * | 1981-03-11 | 1982-09-23 | Karl Lösch KG, 6722 Lingenfeld | Moulded concrete slab with chamfer |
| JPH02301404A (en) * | 1989-05-16 | 1990-12-13 | Okagaki Kogyo Kk | Descaling cleaning of steel concrete frame |
| ES2076856B1 (en) * | 1993-03-03 | 1998-11-01 | Ruiz Miguel Camarero | CONSTRUCTION SYSTEM OF PREFABRICATED SEAT PLATES. |
| DE4333080A1 (en) * | 1993-09-29 | 1995-03-30 | Ebawe Maschinenbau Gmbh | Mould for producing panel-like or slab-like precast concrete units |
-
1996
- 1996-11-27 WO PCT/ES1996/000229 patent/WO1997020666A1/en active IP Right Grant
- 1996-11-27 MX MX9706107A patent/MX9706107A/en active IP Right Grant
- 1996-11-27 EP EP96939948A patent/EP0818287B1/en not_active Expired - Lifetime
- 1996-11-27 DE DE69624226T patent/DE69624226T2/en not_active Expired - Fee Related
- 1996-11-27 ES ES96939948T patent/ES2179955T3/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9720666A1 * |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6698150B1 (en) | 1998-06-09 | 2004-03-02 | Brentmuir Developments (1993) Limited | Concrete panel construction system |
| US7017316B2 (en) | 1998-06-09 | 2006-03-28 | Brentmuir Developments (1993) Limited | Concrete panel construction system |
| US7523591B2 (en) | 1998-06-09 | 2009-04-28 | Brentmuir Developments ( 1993) Limited | Concrete panel construction system |
| US7958687B2 (en) | 1998-06-09 | 2011-06-14 | Brentmuir Developments (1993) Limited | Concrete panel construction system |
| WO2000077317A1 (en) * | 1999-06-09 | 2000-12-21 | Brentmuir Developments (1993) Limited | Concrete panel construction system |
| US7828544B2 (en) | 2004-11-26 | 2010-11-09 | Brentmuir Developments (1993) Limited | Concrete panel construction system and method of making panels |
| US9399867B2 (en) | 2009-04-07 | 2016-07-26 | Millwick Acquisition Corp. | Concrete panel corner connection |
| WO2011155841A1 (en) * | 2010-06-09 | 2011-12-15 | Infra+ B.V. | Moulds and methods for forming prefab concrete floor elements and prefab elements |
| NL2004864C2 (en) * | 2010-06-09 | 2011-12-13 | Infra & B V | Moulds and methods for forming prefab concrete floor elements and prefab elements. |
| EP3298216A4 (en) * | 2015-05-21 | 2018-05-16 | Lifting Point Pre-Form Pty Limited | A module for a structure |
| US10323368B2 (en) | 2015-05-21 | 2019-06-18 | Lifting Point Pre-Form Pty Limited | Module for a structure |
| US10619315B2 (en) | 2015-05-21 | 2020-04-14 | Lifting Point Pre-Form Pty Limited | Module for a structure |
| US11053647B2 (en) | 2015-05-21 | 2021-07-06 | Lifting Point Pre-Form Pty Limited | Module for a structure |
| US11598056B2 (en) | 2015-05-21 | 2023-03-07 | Inquik Ip Holdings Pty Ltd | Module for a structure |
| CN108772944A (en) * | 2018-05-07 | 2018-11-09 | 安徽砼宇特构科技有限公司 | It is a kind of to facilitate fixed installation formula precast concrete case |
| CN114482375A (en) * | 2022-02-22 | 2022-05-13 | 杭州江润科技有限公司 | Integral joint type reinforced concrete laminated slab and construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2179955T3 (en) | 2003-02-01 |
| DE69624226T2 (en) | 2003-10-30 |
| WO1997020666A1 (en) | 1997-06-12 |
| DE69624226D1 (en) | 2002-11-14 |
| EP0818287B1 (en) | 2002-10-09 |
| MX9706107A (en) | 1997-11-29 |
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