NZ621895B - A prefabricated movement joint system for concrete floors - Google Patents
A prefabricated movement joint system for concrete floorsInfo
- Publication number
- NZ621895B NZ621895B NZ621895A NZ62189514A NZ621895B NZ 621895 B NZ621895 B NZ 621895B NZ 621895 A NZ621895 A NZ 621895A NZ 62189514 A NZ62189514 A NZ 62189514A NZ 621895 B NZ621895 B NZ 621895B
- Authority
- NZ
- New Zealand
- Prior art keywords
- floor slab
- top edge
- concrete floor
- rail
- edge rail
- Prior art date
Links
- 239000000463 material Substances 0.000 claims abstract description 25
- 239000002184 metal Substances 0.000 claims abstract description 14
- 238000005520 cutting process Methods 0.000 claims abstract description 7
- 238000001125 extrusion Methods 0.000 claims description 8
- 239000004677 Nylon Substances 0.000 claims description 5
- 229920001778 nylon Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 238000005728 strengthening Methods 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 4
- 238000009415 formwork Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000003000 extruded plastic Substances 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
- E01C11/04—Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
- E01C11/08—Packing of metal
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
- E01C11/04—Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
- E01C11/12—Packing of metal and plastic or elastic materials
- E01C11/126—Joints with only metal and prefabricated packing or filling
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
- E01C11/04—Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
- E01C11/14—Dowel assembly ; Design or construction of reinforcements in the area of joints
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/48—Dowels, i.e. members adapted to penetrate the surfaces of two parts and to take the shear stresses
- E04B1/483—Shear dowels to be embedded in concrete
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/61—Connections for building structures in general of slab-shaped building elements with each other
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/681—Sealings of joints, e.g. expansion joints for free moving parts
-
- 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
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B2005/322—Floor structures wholly cast in situ with or without form units or reinforcements with permanent forms for the floor edges
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2103/00—Material constitution of slabs, sheets or the like
- E04B2103/02—Material constitution of slabs, sheets or the like of ceramics, concrete or other stone-like material
-
- 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
- E04B5/023—Separate connecting devices for prefabricated floor-slabs
-
- 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
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
- E04B5/38—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element
- E04B5/40—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element with metal form-slabs
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/12—Flooring or floor layers made of masses in situ, e.g. seamless magnesite floors, terrazzo gypsum floors
- E04F15/14—Construction of joints, e.g. dividing strips
- E04F15/142—Dividing strips or boundary strips
Abstract
prefabricated movement joint system 2 for a concrete floor slab arrangement, where the system 2 is configured to be arranged in a joint to be formed between a first concrete floor slab 1a and a second concrete floor slab 1b in the concrete floor slab arrangement. The joint system 2 comprises a first top edge rail for providing edge protection in two planes for a first upper edge 15a of the first concrete floor slab 1a in the joint to be formed between the first concrete floor slab 1a and the second concrete floor slab 1b in the concrete floor slab arrangement, a second top edge rail for providing edge protection in two planes for a second upper edge 15b of the second concrete floor slab 1b in the joint to be formed between the first concrete floor slab 1a and the second concrete floor slab 1b in the concrete floor slab arrangement, and a divider plate 4 of metal or other material to be arranged in the joint to be formed at least partly between the first concrete floor slab 1a and the second concrete floor slab 1b in the concrete floor slab arrangement and at least partly between the first top edge rail 15a and the second top edge rail 15b. The first top edge rail 15a of the prefabricated movement joint system 2 comprises a first rail portion 3a and a second rail portion. The first rail portion 3a of the first top edge rail is to be arranged essentially parallel with a top face of the first concrete floor slab 1a. The second rail portion of the first top edge rail is to be arranged essentially parallel with a joint face facing the joint to be formed between the first concrete floor slab 1a and the second concrete floor slab 1b. The first rail portion 3a is provided in an essentially right angle in relation to the second edge rail portion so that the first top edge rail has an essentially L-shaped cross section form. The first top edge rail has a plurality of anchors 6 to be cast into concrete of the first concrete floor slab to anchor the first top edge rail in the first concrete floor slab. At least one anchor 6 of the plurality of anchors has been formed by cutting and plastically deforming the material forming the second rail portion of the first top edge rail so that the at least one anchor 6 is an integral part of the second rail portion of the first top edge rail and consist of material that has been used forming the second rail portion of the first top edge rail. rst top edge rail for providing edge protection in two planes for a first upper edge 15a of the first concrete floor slab 1a in the joint to be formed between the first concrete floor slab 1a and the second concrete floor slab 1b in the concrete floor slab arrangement, a second top edge rail for providing edge protection in two planes for a second upper edge 15b of the second concrete floor slab 1b in the joint to be formed between the first concrete floor slab 1a and the second concrete floor slab 1b in the concrete floor slab arrangement, and a divider plate 4 of metal or other material to be arranged in the joint to be formed at least partly between the first concrete floor slab 1a and the second concrete floor slab 1b in the concrete floor slab arrangement and at least partly between the first top edge rail 15a and the second top edge rail 15b. The first top edge rail 15a of the prefabricated movement joint system 2 comprises a first rail portion 3a and a second rail portion. The first rail portion 3a of the first top edge rail is to be arranged essentially parallel with a top face of the first concrete floor slab 1a. The second rail portion of the first top edge rail is to be arranged essentially parallel with a joint face facing the joint to be formed between the first concrete floor slab 1a and the second concrete floor slab 1b. The first rail portion 3a is provided in an essentially right angle in relation to the second edge rail portion so that the first top edge rail has an essentially L-shaped cross section form. The first top edge rail has a plurality of anchors 6 to be cast into concrete of the first concrete floor slab to anchor the first top edge rail in the first concrete floor slab. At least one anchor 6 of the plurality of anchors has been formed by cutting and plastically deforming the material forming the second rail portion of the first top edge rail so that the at least one anchor 6 is an integral part of the second rail portion of the first top edge rail and consist of material that has been used forming the second rail portion of the first top edge rail.
Description
A PREFABRICATED MOVEMENT JOINT SYSTEM FOR CONCRETE
FLOORS
Field of the invention
The invention relates to prefabricated movement joint system as defined in the preamble of
independent claim 1.
This invention relates to the forming of concrete floor slabs, particularly to the forming of
the edges of the slabs or arris’s, also to providing protection of said edges, and improved means
for load transfer between adjacent slabs.
It is well known that concrete floor slabs are cast inside a formwork, commonly
constructed of either timber or steel. This formwork provides an edge and defines a space in
which to cast the concrete, some types of formwork are removed once the concrete sets, and
some are designed to remain in place for the life of the floor.
Once cast, concrete slabs are prone to shrinkage during curing which causes the edges of
the slabs to separate, and expose the upper edge or arris of each individual slab to damage from
loads, such as lorries or fork trucks passing across the joint.
Individual slabs often support heavy loads passing from one slab to another and therefore
require a method of load transfer between adjacent slabs, in order to prevent breakdown of the
joint between adjacent slabs, caused by stresses induced by such loads Typically round, square
or plate dowels and sleeves are embedded in the concrete to extend at 90° across the formed
joint, and connect the slabs together in order to facilitate the transfer of a load from one slab
across the joint to another.
Most available prefabricated joints are anchored into the concrete slabs by a plurality of
Shear Studs which have been welded on either side of the top rails along their length, said
welded studs present a potential consequential risk of failure at the weld, and can cause severe
problems if they break off after the slab has been cast, making re-welding in situ extremely
difficult.
Many existing prefabricated joint manufacturers also produce a dowel and sleeve of their
own specific design, and often manufacture their joint to be able to accommodate only their style
of dowel or similar, other standard dowels may not fit the aperture provided in the divider plate.
Object of the invention
It is therefore an object of this invention to provide an improved prefabricated joint
system which provides maximum protection to the newly formed joint edge in two planes as
opposed to just one and/or to at least provide the public with a useful choice.
Short description of the invention
A first aspect of the present invention provides a prefabricated movement joint system for a
concrete floor slab arrangement, wherein the prefabricated movement joint system is configured
to be arranged in a joint to be formed between a first concrete floor slab and a second concrete
floor slab in the concrete floor slab arrangement, the prefabricated movement joint system
comprising a first top edge rail for providing edge protection in two planes for a first upper edge
of the first concrete floor slab in the joint to be formed between the first concrete floor slab and
the second concrete floor slab in the concrete floor slab arrangement, a second top edge rail for
providing edge protection in two planes for a second upper edge of the second concrete floor slab
in the joint to be formed between the first concrete floor slab and the second concrete floor slab
in the concrete floor slab arrangement, and a divider plate of metal or other material to be
arranged in the joint to be formed at least partly between the first concrete floor slab and the
second concrete floor slab in the concrete floor slab arrangement and at least partly between the
first top edge rail and the second top edge rail, wherein the first top edge rail of the prefabricated
movement joint system comprises a first rail portion and a second rail portion, wherein the first
rail portion of the first top edge rail is to be arranged essentially parallel with a top face of the
first concrete floor slab, and wherein the second rail portion of the first top edge rail is to be
arranged essentially parallel with a joint face facing the joint to be formed between the first
concrete floor slab and the second concrete floor slab, wherein the first rail portion is provided in
an essentially right angle in relation to the second edge rail portion so that the first top edge rail
has an essentially L-shaped cross section form, wherein the first top edge rail has a plurality of
anchors to be cast into concrete of the first concrete floor slab to anchor the first top edge rail in
the first concrete floor slab, and wherein at least one anchor of said plurality of anchors has been
formed by cutting and plastically deforming the material forming the second rail portion of the
first top edge rail so that said at least one anchor is an integral part of the second rail portion of
the first top edge rail and consists of material that has been used forming the second rail portion
of the first top edge rail.
Preferred embodiments of the prefabricated movement joint system are defined in the
dependent claims.
In an embodiment of the prefabricated movement joint system, height adjustment is
achieved by a customized jack arrangement which affixes to the prefabricated joint system by
means of a threaded spigot on the jack which passes through a pre-punched aperture in the edge
rails and is secured there by means of a nut on the other side – said jack arrangement is the
subject of a separate patent.
In one embodiment, the invention provides a prefabricated movement joint system for
forming the edge of the concrete slab. The divider plate may be reinforced by a plurality of
embossed ridges, which may be of any shape or design to suit. Said divider plate may be formed
with a plurality of apertures, which may be of any shape or design required to accept most
known dowel types and sizes, thereby permitting the use of a wide range of load transfer
mechanisms. The dowels and sleeves shown as may be used in this system are the subject of a
separate patent.
The divider plate, because of its possible clamp fixing between the two top edge rails, can
provide in use a degree of height adjustment to accommodate for different thickness slabs. Said
divider plate will preferably be formed from metal sheet, but other materials may be used, and is
intended to be left in place between concrete floor slabs cast on each side thereof.
The prefabricated joint system may further comprise top edge rails which are preferably
supportable by the divider plate, to provide protection in two planes to the edge of the concrete
floor cast slabs. The top edge rails may further comprise a plurality of integrated anchors, which
are formed from the parent metal of the top edge rails, and which become embedded in the
concrete during curing and which fix the top edge rails in position.
The top edge rails of adjoining concrete floor slabs are preferably attached together with
yieldable fixings wherein, as shrinking occurs during the curing process and the top edge rails of
adjacent slabs are drawn apart, the fixings yield to allow for the movement. The yieldable fixing
may comprise low tensile bolts, studs or rivets, for example formed from nylon or similar
plastics, which will shear or part under the shrinkage forces. The fixings for the top edge rails are
preferably located in first apertures formed through the top edge rails and comprise a close
tolerance fit to the fixing, in order to ensure that adjacent top edge rails are accurately placed in
position.
When the top edge rails are fixed together back to back, because of a possible radii
created by the forming of the angles, a curved depression is evident. Said depression may hold
detritus and possibly cause hard wheeled traffic traversing the joint to jar or bump. This potential
problem may be removed by the use of a formed nylon or similar plastic extrusion, shaped in
cross section to exactly fit the curved depression, Said extrusion may also include a suitable lip
or tag at the bottom of the section which can be captured and clamped in position by the top edge
rails.
List of figures
Embodiments of the invention will now be described by way of example with reference
to the accompanying drawings, in which
Figure 1 is a cross section of one embodiment of the prefabricated movement joint
system according to the invention, forming a joint between a first concrete floor slab and a
second concrete floor slab,
Figure 2 is the same cross section of the prefabricated movement joint system as shown
in figure 1 but with the addition of a proprietary plate dowel and sleeve to provide a load transfer
mechanism, said dowel and sleeve are the subject of a separate patent,
Figure 3 is a cross section of the prefabricated movement joint system as shown in Figure
2 once the slabs have cured, shrinkage has taken place and the joint opened, thereby shearing the
yieldable fixings,
Figure 4 is a detailed perspective view of one of the top edge rails showing the formed
angle and the anchors which are formed from the parent metal of the rail. This view also shows
the apertures for the yieldable fixings and the Height Adjustment Jack,
Figure 5 is a perspective view of the divider plate showing at the top edge slots for the
fixings and height adjustment jack spigot, a plurality of apertures along the length to
accommodate most proprietary dowel types and load transfer systems, and a plurality of the
embossed or raised strengthening ridges, which in this embodiment take the shape of a cross, but
may be of any shape or size,
Figure 6 shows a perspective view of the formed nylon or any similar plastic type
material extrusion, which is located uppermost between the top edge rails and is secured in
position by means of being clamped between the top edge rails,
Figure 7 shows a perspective view of a assembled prefabricated movement joint system
including top edge rails with formed angles and anchors, extruded plastic top strip, divider plate
and yieldable fixings,
Figure 8 shows an end sectional view of a prefabricated movement joint system including
top edge rails with formed angles and anchors, extruded plastic top strip, divider plate and
yieldable fixings, and
Figure 9 shows a general perspective view of an assembled prefabricated movement joint
system according to the invention, ready for use, as in figure 7, but with the addition of Dowels
and Sleeves, also included in this view is a Height Adjustment Jack.
Detailed description of the invention
The invention relates to a prefabricated movement joint system 2 such as an expansion
joint system and/or a contraction joint system for a concrete floor slab arrangement.
The prefabricated movement joint system is configured to be arranged in a joint (not
marked with a reference numeral) to be formed between a first concrete floor slab 1a and a
second concrete floor slab 1b when forming the first concrete floor slab 1a and the second
concrete floor slab 1b by casting.
The prefabricated movement joint system 2 comprises a first top edge rail 3a of metal or
other material for providing edge protection in two planes for a first upper edge 15a of the first
concrete floor slab 1a in the joint to be formed between the first concrete floor slab 1a and the
second concrete floor slab 1b in the concrete floor slab arrangement.
The prefabricated movement joint system 2 comprises a second top edge rail 3b of metal
or other material for providing edge protection in two planes for a second upper edge 15b of the
second concrete floor slab 1b in the joint to be formed between the first concrete floor slab 1a
and the second concrete floor slab 1b in the concrete floor slab arrangement.
The prefabricated movement joint system 2 comprises a divider plate 4 of metal or other
material to be arranged in the joint to be formed at least partly between the first concrete floor
slab 1a and the second concrete floor slab 1b in the concrete floor slab arrangement and at least
partly between the first two top edge rail 3a and the second top edge rail 3a.
The divider plate 4 of metal or other material may be formed with a plurality of first
apertures 12 and second apertures 13 and embossed strengthening ridges 9.
According to the invention as previously described above and shown in figures 1 – 9, the
prefabricated movement joint system 2 may be manufactured in discrete lengths to suit or as
required, and by virtue of the overlap shown, a plurality of the joints may be connected together
in order to form the total desired length of joint.
The drawings show a prefabricated movement joint system 2, suitable for use in forming
concrete floor slabs 1a, 1b as shown in figure 1. The prefabricated movement joint system 2 as
shown in figure 7 comprises two top edge rails 3 possible provided with formed anchors 6, a
divider plate 4 as shown in figure 7 possible provided with a plurality of yieldable fixings 5.
The first top edge rail 3a and the second top edge rail 3b are preferably, as shown in the
figures, elongate and can be provided in lengths and joined together and cut as required,
comprising possible of a formed unequal angle, with the narrow plane facing uppermost to the
top, and the other to the vertical, this angle being designed to provide armored protection to the
edge of the first concrete floor slab 1a, or correspondingly, to the second concrete floor slab 1b.
In the prefabricated movement joint system 2 one of the first top edge rail 3a and the
second top edge rail 3b of the prefabricated movement joint system 2 may be formed into an
angle to provide edge protection to a part of the top face (not marked with a reference numeral)
and to a part of the joint face (not marked with a reference numeral) of the first concrete floor
slab 1a in the joint to be formed between a first concrete floor slab 1a and a second concrete
floor slab 1b.
In the prefabricated movement joint system 2 one of the first top edge rail 3a and the
second top edge rail 3b of the prefabricated movement joint system 2 may be formed into an
angle to provide edge protection to a part of the top face and to a part of the joint face of the
second concrete floor slab in the joint to be formed between a first concrete floor slab 1a and a
second concrete floor slab 1b.
In an embodiment of the prefabricated movement joint system 2 the first top edge rail 3a
of the movement joint system 2 may have has a plurality of anchors 6 to embed and position the
first top edge rail 3a in the first concrete floor slab 1a so that at by at least one anchor 6 of said
plurality of anchors 6 has been formed from the parent metal of a vertical plane of the first top
edge rail 3a, as opposed to being welded on or affixed by some other method.
In an embodiment of the prefabricated movement joint system 2 the second top edge rail
3b of the prefabricated movement joint system 2 may have has a plurality of anchors 6 to embed
and position the second top edge rail 3b in the second concrete floor slab 1a so that at by at least
one anchor 6 of said plurality of anchors 6 has been formed from the parent metal of a vertical
plane of the second top edge rail 3b, as opposed to being welded on or affixed by some other
method.
In an embodiment of the prefabricated movement joint system 2 the first top edge rail 3a
of the prefabricated movement joint system 2 comprise a first rail portion 16a and a second rail
portion 17a. The first rail portion 16a of the first top edge rail 3a is to be arranged essentially
parallel with a top face of the first concrete floor slab 1a. The second rail portion 17a of the first
top edge rail 3a is to be arranged essentially parallel with a joint face (not marked with a
reference numeral) facing the joint to be formed between the first concrete floor slab 1a and the
second concrete floor slab (1b). In this embodiment of the prefabricated movement joint system
2 the first rail portion 16a is provided in an essentially right angle in relation to the second rail
portion 17a so that the first top edge rail 3a has an essentially L-shaped cross section form. In
this embodiment of the prefabricated movement joint system 2 the first top edge rail 3a may
have a plurality of anchors 6 to be cast into concrete of the first concrete floor slab 1a to anchor
the first top edge rail 3a in the first concrete floor slab 1a so that at least one anchor 6 of said
plurality of anchors 6 has been formed by cutting and plastically deforming the material forming
the second rail portion 17a of the first top edge rail 3a so that said at least one anchor 6 is an
integral part of the second rail portion 17a of the first top edge rail 3a and consist of material that
has been used forming the second rail portion 17a of the first top edge rail 3a.
In an embodiment of the prefabricated movement joint system 2 the second top edge rail
3b of the prefabricated movement joint system 2 comprise a first rail portion 16b and a second
rail portion 17b. The first rail portion 16b of the second top edge rail 3b is to be arranged
essentially parallel with a top face of the second concrete floor slab 1b. The second rail portion
16b of the second top edge rail 3b is to be arranged essentially parallel with a joint face facing
the joint to be formed between the first concrete floor slab 1a and the second concrete floor slab
1b. The first rail portion 16b is provided in an essentially right angle in relation to the second rail
portion 17b so that the second top edge rail 3b has an essentially L-shaped cross section form. In
this embodiment of the prefabricated movement joint system 2 the second top edge rail 3b may
have a plurality of anchors 6 to be cast into concrete of the second concrete floor slab 1b and to
anchor the second top edge rail 3b in the second concrete floor slab 1b, and at least one anchor 6
of said plurality of anchors 6 has been formed by cutting and plastically deforming the material
forming the second rail portion 17b of the second top edge rail 3b so that said at least one anchor
6 is an integral part of the second rail portion 17b of the second top edge rail 3b and consist of
material that has been used forming the second rail portion 17b of the second top edge rail 3b.
At least one of the first top edge rail 3a and the second top edge rail 3b may be provided
with a plurality of first apertures 12 for receiving the yieldable fixings 5 and/or with another
plurality of second apertures 13 for receiving the height adjusting jack 11 as shown in figure 9.
The first top edge rail 3 and the second top edge rail 3b of the prefabricated movement
joint system 2 may be fixable back to back with the yieldable fixings 5 thereby clamping into
position the divider plate 4 and an optional extrusion 7 of plastic such as nylon or other material,
as shown in figure 6. The extrusion 7 serves two functions, firstly to keep out detritus from the
curved depression and secondly to assist in smooth wheeled transition of the prefabricated
movement joint system 2 once in situ.
A plurality of shaped openings 8 may be provided along the length of the divider plate 4.
The shaped openings 8 are of a generally squat and wide shape in order to permit dowels 14 such
as circular, square, or plate dowels to extend there through, thereby permitting the use of a wide
variety of dowels and load transfer mechanisms.
Another optional feature of the divider plate 4 is a plurality of slots 15 uppermost along
the top edge, these slots are there to permit the passage of yieldable fixings 5 and height
adjustment jacks 11 through the first top edge rail 3a and the second top edge rail 3b when the
prefabricated movement joint system 2 is assembled for use.
In order to strengthen the divider plate 4 to resist the flow of concrete being poured
against it a plurality of embossed straightening ridges 9 as shown in figure 5 are formed, said
embossed straightening ridges 9 may be of any suitable shape or design as required.
A view of the complete prefabricated movement joint system 2 or assembly ready for
use, including plate dowels and sleeves 10 also a height adjusting jack 11 can be viewed in
figure 9. The aforementioned plate dowels and jack are the subject of separate patents and do not
form a part of this application.
Whilst endeavoring in the foregoing specification to draw attention to those features of
the invention believed to be of particular importance, it should be understood that the applicant
claims protection in respect of any patentable feature or combination of features hereinbefore
referred to and/or shown in the drawings whether or not particular emphasis has been placed
thereon.
The term “comprising” as used in this specification and claims means “consisting at least
in part of”. When interpreting statements in this specification and claims which include
“comprising”, other features besides the features prefaced by this term in each statement can also
be present. Related terms such as “comprise” and “comprised” are to be interpreted in a similar
manner.
Claims (17)
1. A prefabricated movement joint system for a concrete floor slab arrangement, wherein the prefabricated movement joint system is configured to be arranged in a joint to be formed 5 between a first concrete floor slab and a second concrete floor slab in the concrete floor slab arrangement, the prefabricated movement joint system comprising a first top edge rail for providing edge protection in two planes for a first upper edge of the first concrete floor slab in the joint to be formed between the first concrete floor slab and the second concrete floor slab in the concrete floor slab arrangement, 10 a second top edge rail for providing edge protection in two planes for a second upper edge of the second concrete floor slab in the joint to be formed between the first concrete floor slab and the second concrete floor slab in the concrete floor slab arrangement, and a divider plate of metal or other material to be arranged in the joint to be formed at least partly between the first concrete floor slab and the second concrete floor slab in the concrete 15 floor slab arrangement and at least partly between the first top edge rail and the second top edge rail, wherein the first top edge rail of the prefabricated movement joint system comprises a first rail portion and a second rail portion, wherein the first rail portion of the first top edge rail is to be arranged essentially parallel with a top face of the first concrete floor slab, and wherein the 20 second rail portion of the first top edge rail is to be arranged essentially parallel with a joint face facing the joint to be formed between the first concrete floor slab and the second concrete floor slab, wherein the first rail portion is provided in an essentially right angle in relation to the second edge rail portion so that the first top edge rail has an essentially L-shaped cross section 25 form, wherein the first top edge rail has a plurality of anchors to be cast into concrete of the first concrete floor slab to anchor the first top edge rail in the first concrete floor slab, and wherein at least one anchor of said plurality of anchors has been formed by cutting and plastically deforming the material forming the second rail portion of the first top edge rail so that 30 said at least one anchor is an integral part of the second rail portion of the first top edge rail and consist of material that has been used forming the second rail portion of the first top edge rail.
2. The prefabricated movement joint system according to claim 1, wherein the first top edge rail comprises metal.
3. The prefabricated movement joint system according to claim 1 or 2, wherein the second top edge rail of the prefabricated movement joint system comprise a first rail portion and a second rail portion, wherein the first rail portion of the second top edge rail is to be arranged essentially parallel with a top face of the second concrete floor slab, and wherein the second rail portion of the second top edge rail is to be arranged essentially parallel with a joint face facing the joint to be formed between the first concrete floor slab and the second concrete floor slab, and 5 the first rail portion is provided in an essentially right angle in relation to the second rail portion so that the second top edge rail has an essentially L-shaped cross section form.
4. The prefabricated movement joint system according to claim 3, wherein the second top edge rail has a plurality of anchors to be cast into concrete of the second 10 concrete floor slab and to anchor the second top edge rail in the second concrete floor slab, and at least one anchor of said plurality of anchors has been formed by cutting and plastically deforming the material forming the second rail portion of the second top edge rail so that said at least one anchor is an integral part of the second rail portion of the second top edge rail and consist of material that has been used forming the second rail portion of the second top edge rail.
5. The prefabricated movement joint system according to any one of claims 1 to 4, wherein at least one of the first top edge rail and the second top edge rail has a plurality of second apertures to suit yieldable fixings and height adjustment jacks. 20
6. The prefabricated movement joint system according to any one of claims 1 to 5, comprising a plurality of first apertures for receiving low tensile yieldable fixings for holding the first top edge rail and the second top edge rail in position with respect to each other.
7. The prefabricated movement joint system according to claim 6, wherein the yieldable 25 fixings are variable to suit the strength and design of the concrete first and second floor slabs.
8. The prefabricated movement joint system according to any one of claims 1 to 7, wherein the divider plate is height adjustable and lockable into position between the first top edge rail and the second top edge rail.
9. The prefabricated movement joint system according to any one of claims 1 to 8, wherein the divider plate has a plurality of shaped apertures to accommodate dowels or corresponding load transfer systems arranged to transfer loads between the first concrete floor slab and the second concrete floor slab.
10. The prefabricated movement joint system according to any one of claims 1 to 9, wherein the divider plate has a plurality of embossed or raised ridges for the purpose of strengthening the divider plate.
11. The prefabricated movement joint system according to any one of claims 1 to 10, comprising a plastic extrusion shaped to suit a curved depression between the first top edge rail and the second top edge rail.
12. The prefabricated movement joint system according to claim 11, wherein the extrusion comprises a nylon.
13. The prefabricated movement joint system according to claim 11 or 12, wherein the 10 extrusion can be clamped into position between the first top edge rail and the second top edge rail, thereby preventing detritus from filling the depression and assisting in the smooth transition of wheeled traffic across the joint.
14. The prefabricated movement joint system according to any one of claims 1 to 13, wherein 15 the system can be manufactured in discrete lengths and coupled together to provide the total desired length of joint.
15. The prefabricated movement joint system according to any one of claims 1 to 14, wherein the system can be supplied for use either fully assembled or in Kit Form, for assembly by others.
16. The prefabricated movement joint system according to claim 1, substantially as herein described with reference to any embodiment disclosed.
17. A prefabricated movement joint system for a concrete floor slab arrangement, substantially 25 as herein described with reference to any embodiment shown in the accompanying drawings.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EA201691583A EA029728B1 (en) | 2014-02-14 | 2015-02-13 | Prefabricated movement joint system for concrete floors |
| PCT/FI2015/050088 WO2015121538A1 (en) | 2014-02-14 | 2015-02-13 | A prefabricated movement joint system for concrete floors |
| AU2015216827A AU2015216827B2 (en) | 2014-02-14 | 2015-02-13 | A prefabricated movement joint system for concrete floors |
| PT15707692T PT3111011T (en) | 2014-02-14 | 2015-02-13 | A prefabricated movement joint system for concrete floors |
| PL15707692T PL3111011T3 (en) | 2014-02-14 | 2015-02-13 | A prefabricated movement joint system for concrete floors |
| US15/113,322 US20170009446A1 (en) | 2014-02-14 | 2015-02-13 | Prefabricated movement joint system for concrete floors |
| EP15707692.8A EP3111011B1 (en) | 2014-02-14 | 2015-02-13 | A prefabricated movement joint system for concrete floors |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20145148 | 2014-02-14 | ||
| FI20145148A FI125421B (en) | 2014-02-14 | 2014-02-14 | Prefabricated joint joints for concrete floors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NZ621895A NZ621895A (en) | 2015-03-27 |
| NZ621895B true NZ621895B (en) | 2015-06-30 |
Family
ID=
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