AU2020227018B2

AU2020227018B2 - Jointer system

Info

Publication number: AU2020227018B2
Application number: AU2020227018A
Authority: AU
Inventors: Joseph Banta; Damien Buongiorno; Darren Cambey; Shin Lin Loh; Ron Smith; Darren Southwell
Original assignee: James Hardie Technology Ltd
Current assignee: James Hardie Technology Ltd
Priority date: 2019-09-02
Filing date: 2020-09-01
Publication date: 2022-02-24
Anticipated expiration: 2040-09-01
Also published as: AU2020227018A1

Abstract

JOINTER SYSTEM ABSTRACT OF THE DISCLOSURE 5 A jointer system, for use in a building array such as a structural flooring or decking system. The building array comprising at least two adjacent building elements and at least one jointer system intermediate the at least two adjacent building elements, wherein the jointer system comprises a plurality of a discrete base jointer elements releasably engageable with a cover strip and wherein 10 the plurality of base jointer elements each releasably engage with the at least two adjacent building elements. [Figure 2] 2/6 110 100 154 157 132 132 134 158 12 150 s Fig. 2 1400 1444 Fig.ig 3a14

Description

2/6

110 100 154

157 132 132 134 158 12 150 s

1400 Fig. 2

1444

Fig.ig 3a14

JOINTER SYSTEM FIELD OF THE INVENTION

[0001] The present disclosure generally relates to a jointer system for use in a building array which

is suitable for use as a flooring, decking or cladding installation.

BACKGROUND TO THE INVENTION

[0002] Any discussion of the prior art throughout the specification should in no way be considered

as an admission that such prior art is widely known of forms part of the common general knowledge

in the field.

[0003] Timber decking is traditionally installed on a support frame whereby timber planks are

installed on the support joists of the support frame by fixing using fasteners, for example, nails and

screws. In many instances the timber planks are directly fixed through their faces to the support

frame and spaced apart from each other such that a gap is provided between adjacent timber

planks to allow for drainage and movement of the timber planks over time. However, often the

fasteners used to secure the timber planks to the support frame in this manner, corrode and move

over time, which causes the overall aesthetic appearance of the deck to degrade.

[0004] Correct positioning of fasteners in a timber plank is important. Timber planks naturally

move, crack and so forth over time, therefore, it is preferable to avoid placing fasteners too close to

the ends of timber planks which could otherwise result in splitting due to natural movement of the

timber.

[0005] Newer polymer composite decking materials are also installed on a support framework in

similar manner to traditional timber decking, i.e. polymer composite decking planks are also fixed

using direct face fixing. As with timber, polymer composite decking planks can also split over time if

they are face fixed with fasteners too near their ends.

[0006] Both timber and polymer composite decking materials can also be fixed using concealed

fastening systems such as, for example, installation clips. Modern decking installations prefer to use

concealed fastening methods where possible. Such methods avoid fastener heads being visible in

the completed decking installation, and therefore avoid the risk of decking planks splitting when secured to the supporting frame too close to their ends.

[0007] One method of concealed fastening uses an installation clip that is generally "T" or inverted

"L" shaped. Such clips generally allow angled fixing of a decking element to a supporting joist

through one or both arms of the clip and through the side edge of the decking plank. Decking

planks that are suitable for use with inverted "L" shaped clips have a recess formed along the length

of one side edge, while decking planks suitable for use with "T" shaped clips will have recesses

formed along the length of both side edges. The characteristic feature of these installation clips is

that they are no wider than the supporting joists to which they are attached. The clips consist of a

flange and at least one arm extending orthogonally from at least one edge. The flange is generally

configured to rest against the side edge of a decking element and the arms that extend from it are

generally in the form of tabs that fit into a recess in the side edge of a decking element to restrain

that decking element from movement. The degree of restraint possible is limited by the minimal

total contact area of the fastening element per length of decking element.

[0008] In each of the above exemplary decking installation systems, wherein the decking planks are

fixed by either direct face fixing, or concealed fastening systems, the static or dynamic loading

capacity of the completed decking installation is limited by the inherent material properties of the

decking plank. There is no interaction between adjacent decking planks because the decking planks

are spaced apart thus the full effect of static or dynamic loading is borne solely by the decking plank

to which the load is applied.

[0009] Furthermore, it is recognized that each of the above exemplary decking installation systems

comprise open gaps. Consequently, they are generally regarded as unsuitable for use in fire-prone

areas. Even in instances, where there is no risk from direct flame impingement, a decking system

comprising open gaps is regarded as unsuitable for use in fire-prone area because of the level of risk

associated with the decking systems due to ingress of hot embers through the gaps.

SUMMARY OF THE INVENTION

[0010] Accordingly, the present disclosure provides a jointer system for use in a structural flooring

system that is improved, or which is at the least, a useful alternative to known jointer systems for

use in structural flooring systems.

[0011] According to the present disclosure there is provided a jointer system as set out in appended Claims 1 to 17. There is also provided a base jointer element as set out in appended

Claims 18 to 24. There is further provided a cover strip as set out in appended Claims 25 to 30.

There is also provided a building array comprising a jointer system and at least two building

elements as set out in appended Claims 31 to 40. There is also provided a method of making a

building array comprising at least two adjacent building elements and at least one jointer system,

the method comprising the steps as set out in appended Claim 41.

[0012] For the purposes of this specification, the term 'comprise' shall have an inclusive meaning.

Thus, it is understood that it should be taken to mean an inclusion of not only the listed

components it directly references, but also non specified components. Accordingly, the term 'comprise' is to be attributable with as broad an interpretation as possible and this rationale should

also be used when the terms 'comprised' and/or 'comprising' are used.

[0013] Further aspects or embodiments of the present disclosure will become apparent from the

ensuing description which is given by way of example only. The terms building element, flooring

element and decking element will hereinafter be used interchangeably and without limitation.

[0014] In one embodiment, there is provided a jointer system comprising at least one discrete

elongate base jointer element releasably engageable with a cover strip, wherein

the at least one base jointer element comprises a substantially'U'-shaped channel, the substantially

'U'-shaped channel comprising a base portion and two spaced apart arms, wherein each arm extends substantially perpendicularly from the base portion, each arm further comprising a flange

remote from the base portion wherein the flange extends substantially orthogonally from each

respective arm in a direction substantially parallel to and away from the base portion;

wherein, the cover strip comprises a body having a front face, a pair of spaced apart support arms

which extend orthogonally from opposing edges of the body remote from the front face, each

support arm comprising a locking formation; wherein, the spaced apart support arms of the cover

strip are at least partially seated within the U-shaped channel of the base jointer element such that

the locking formation of each spaced apart support arm of the cover strip releasably engages with

one of the two spaced apart arms of the U-shaped channel of the base jointer element; and

further comprising a plurality of discrete elongate base jointer element releasably engageable with

the cover strip, wherein the plurality of discrete elongate base jointer elements are spaced apart

from each other whilst in engagement with the cover strip.

[0015] In another embodiment, there is provided a discrete base jointer element comprising a substantially 'U'-shaped channel, the substantially 'U'-shaped channel comprising a base portion and two spaced apart arms, wherein each arm extends substantially perpendicularly from the base portion, each arm further comprising a flange remote from the base portion wherein the flange extends substantially orthogonally from each respective arm in a direction substantially parallel to and away from the base portion. In a further embodiment, each arm of the two spaced apart arms comprise a recess located within the U-shaped channel. In another embodiment, the recess of each arm of the two spaced apart arms is located on each arm such that the recesses are opposing recesses located opposite each other on the two spaced apart arms. In a further embodiment, each flange is provided with a gripping formation. The presence of gripping formation helps to restrain lateral movement of a discrete base jointer element in use.

[0016] In a further embodiment, the base portion or central web of the U-shaped channel further

comprises one or more apertures to facilitate location of the discrete base jointer element on a

support frame. In a yet further embodiment, the base portion of the U-shaped channel further

comprises a groove to facilitate water drainage or run-off from the discrete base jointer element. In

another embodiment, the base portion of the U-shaped channel further comprises one or more

gaps. In one embodiment, the one or more gaps are located on the central web adjacent to the

apertures to facilitate a drainage pathway for liquid water run-off and a ventilation path for water

vapour. In a further embodiment, the one or more gaps are located on the central web and/or each

arm of the two spaced apart arms.

[0017] In one embodiment, discrete elongate base jointer elements may be formed from a range

of materials including metals such as steel or aluminium, UV stabilized polymers, and polymer

composites such as inorganic fibre reinforced polymers.

[0018] In one embodiment, there is also provided a cover strip comprising a body having a front

face, a pair of spaced apart support arms which extend orthogonally from opposing edges of the

body remote from the front face, each support arm comprising a locking formation. In a further

embodiment, each support arm further comprises a support shoulder and an angled portion,

wherein the locking formation is located between the support shoulder and the angled portion. In a

further embodiment, the body of the cover strip further comprises a planar section extending from

each of the opposing edges of the body such that the pair of spaced apart support arms extend

orthogonally from the opposing edges intermediate the planar sections of the body. In one embodiment, the configuration of the cover strip comprising a body having planar sections extending from opposing edges of the body and a pair of spaced apart support arms extending orthogonally from the opposing edges of the body forms a substantially Pi (n) shaped cover strip.

[0019] In one embodiment cover strips may be formed from a range of materials including, but not

limited to, metals such as steel or aluminium, UV stabilized polymers, or inorganic fibre reinforced

polymer composites. In one embodiment, the front face of the cover strip comprises an aesthetic finish, for example, the front face may be decorated by painting, anodizing (if made from

aluminium), powder coated, or a pattern may be formed in or on the surface of the front face.

[0020] In one embodiment, the at least one discrete base jointer element is releasably engaged

with the cover strip to form the jointer system. In a further embodiment, a plurality of discrete

elongate base jointer elements are releasably engaged with the cover strip to form the jointer

system. Conveniently, the plurality of discrete elongate base jointer elements are spaced apart

from each other whilst in engagement with the cover strip.

[0021] In one embodiment, the spaced apart support arms of the cover strip are at least partially

seated within the U-shaped channel of the base jointer element such that the locking formation of

each spaced apart support arm of the cover strip releasably engages with one of the two spaced

apart arms of the U-shaped channel of the base jointer element. In some embodiments, the locking

formation of each spaced apart support arm of the cover strip releasably engages with the recess located on the two spaced apart arms of the U-shaped channel of the base jointer element. In such

an embodiment, the locking formation of the cover strip and recess of the base jointer element in

effect form a detent which prevent movement of the cover strip relative to the base jointer element

until released by application of an external force.

[0022] In a further embodiment, the support shoulders of the spaced apart support arms of the

cover strip are configured to engage with the flanges of the base jointer element such that the

support shoulders provide a stop mechanism to prevent the cover mechanism from being inserted

too far into the U-shaped channel of the base portion. In such an embodiment, the distance

between the support shoulder of the spaced apart support arms and the locking formation of the

spaced apart support arms is such that the support shoulders allow the spaced apart support arms

of the cover strip to at least partially seat within the U-shaped channel of the base jointer element

whilst each locking formation is able to engage with one of the two spaced apart arms or recess of the U-shaped channel of the base jointer element as described above.

[0023] In a further embodiment angled portion of the spaced apart support arms of the cover strip

are configured to assist in installation of cover strip by providing a ramp surface to reduce the

amount of force required to urge locking formation into releasable engagement with one of the two

spaced apart arms or recess of the U-shaped channel of the base jointer element as described

above relative to a cover strip that does not have an angled portion.

[0024] In one embodiment, there is provided a building array comprising at least two adjacent

building elements and at least one jointer system intermediate the at least two adjacent building

elements, wherein the jointer system comprises a plurality of discrete elongate base jointer

elements releasably engageable with a cover strip and wherein the plurality of base jointer

elements each releasably engage with the at least two adjacent building elements. In practice, each

building element is removably secured to a building support frame by locating the building element

on a building support frame using the plurality of discrete elongate base jointer elements which are

fixed into position on the building support frame and which are all then covered by at least one

cover strip. The gaps created between neighbouring discrete elongate base jointer elements create

a drainage pathway for liquid water run-off and a ventilation path for water vapour in the

completed building array. This is particularly advantageous when for example, a fast draining, well

ventilated decking installation is required.

[0025] In one embodiment, each building element comprises a substantially rectangular cross

sectional plank, having a first major surface and a second major surface spaced apart from the first

major surface by a side edge, wherein the side edge of each building element comprises a recess

along at least one portion of its length. In one embodiment, the elongate edge bordering the

junction between the first major surface and the side edge of each building element is provided

with a bevelled edge. In one embodiment of each building element is a decking element. One

advantage of certain embodiments of the discrete base jointer element is that the flanges engage

with the recess located in opposing side faces intermediate the first and second major surfaces of

adjacent building elements.

[0026] In a further embodiment, the discrete base jointer element is provided with one or more

apertures to facilitate location of a fastener for securing the discrete base jointer element to the

building support frame. The decking element is removably secured to the building support frame to facilitate easy replacement of a decking element if required after installation.

[0027] In some embodiments discrete base jointer element is secured to the building support

frame such that the long axis of base jointer element is at a predetermined angle relative to the

long axis of the building support frame. In one embodiment, the long axis of discrete base jointer

element is substantially perpendicular to the long axis of the building support frame.

[0028] In further embodiments, it may be desirable to have a building array with a diagonal pattern wherein the flooring elements extend at an angle from one corner of the installation to the

opposing farthest corner of the installation. In such embodiments, one or more discrete base

jointer elements are secured to the building support frame such that the long axis of base jointer element is at an angle that is between 30 and 900 relative to the long axis of the components of the

building support frame. In one example, the discrete base jointer element is secured at an angle of

approximately 45, thereby creating a diagonal pattern on the decking installation in which the

decking elements extend at an angle from one corner of the decking installation to the opposing

farthest corner of the decking installation. In all embodiments, it is desirable, that the

predetermined angle of orientation of the discrete base jointer element relative to the building

support frame enables a single decking element gain support across as many components of the

building support frame as possible. Other recognised patterns such as, for example, continuous,

discontinuous, squared and or breaker board can also be used within the building array.

[0029] The building, flooring or decking elements can be formed from any material accepted by

local building regulatory authorities for construction of decking installations. In one embodiment,

the building element comprises fibre cement material, for example fibre cement decking such as

that commercialized by James Hardie under the trademark HardieDeck".

[0030] The present application also discloses a method of making a building array comprising at

least two adjacent building elements and at least one jointer system, the method comprising the

steps of;

(a) Providing a support framework;

(b) Releasably fixing at least one discrete base jointer element to the support

framework;

(c) Positioning a first building element on the support framework such that the first building element engages with the fixed at least one discrete base

jointer element;

(d) Positioning and releasably fixing one or more further discrete base jointer

elements to the support framework and the positioned first building

element on the support framework such that the one or more further

discrete base jointer elements are positioned in series with fixed at least

one discrete base jointer element;

(e) Positioning a second building element on the support framework adjacent

to the first building element such that the second building element engages

with the fixed at least one discrete base jointer element and one or more

further discrete base jointer elements;

(f) Repeating step (c) to (e) as often as required until the desired building array

size is achieved; and

(g) Releasably fixing a cover strip in place over one or more of the discrete base jointer elements and one or more of the further discrete base jointer

elements as desired.

BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Certain embodiments of the present disclosure will now be described, by way of example

only, with reference to the accompanying drawings. In the figures, the same or similar reference

numerals are used to designate similar components of an illustrated embodiment.

[0032] FIG. 1 is a partial perspective front view of a structural flooring system in accordance with

an embodiment of the present disclosure;

[0033] FIG. 2 is a cross-sectional side view of a partially constructed structural flooring system in

accordance with an embodiment of the present disclosure;

[0034] FIG. 3a is a perspective end view of a jointer element, in accordance with an embodiment of

the present disclosure;

[0035] FIG. 3b is a top view of a jointer element, in accordance with an embodiment of the present

disclosure;

[0036] FIG. 3c is an end view of a cover element, in accordance with an embodiment of the present

disclosure;

[0037] FIG. 3d is an end view of a cover element, in accordance with a further embodiment of the

present disclosure;

[0038] FIG. 4 is a partial cross-sectional end view of a structural flooring system in accordance with

an embodiment of the present disclosure; and

[0039] FIG. 5 is the partial cross-sectional end view of FIG. 4 showing fluid movement through the

jointing system of the present disclosure; and

[0040] FIG. 6 is a partial cross-sectional end view of a structural flooring system in accordance with

a further embodiment of the present disclosure.

DETAILED DESCRIPTION

[0041] In the description which follows, like parts may be marked throughout the specification and

drawings with the same reference numerals. The drawing figures are not necessarily to scale and

certain features may be shown exaggerated in scale or in somewhat generalized or schematic form

in the interest of clarity and conciseness.

[0042] Referring now to the drawings and specifically to FIG's. 1 and 2, there is shown respectively,

a front perspective view of a partially constructed structural flooring system 100 and a cross sectional side view of the partially constructed structural flooring system of FIG. 1 showing relative

positioning of adjacent discrete elongate base jointer elements 140.

[0043] In one form, the partially constructed structural flooring system 100 of FIG.1 is a decking

installation, wherein the decking installation 100 comprises a plurality of decking elements 110.

Each decking element 110 (as shown in dotted outline in FIG. 2) comprises a substantially

rectangular cross-sectional plank, having a first major surface 112 providing a walking surface and a

second major surface 114 which is removably secured to a building support frame comprising framing elements including for example, joists 132. As will be described in more detail below, each

decking element or plank 110 is removably secured to the building support frame by locating the

decking element or plank 110 on the building support frame using a plurality of discrete elongate

base jointer elements 140 which are fixed into position and then covered by at least one cover strip

160. In a further embodiment, the discrete base jointer element 140 is provided with one or more

apertures 150, 151, 153 (as shown in FIG. 3b), as discussed below, to facilitate location of the

fastener 154 for securing the discrete base jointer element 140 to the building support frame. The

decking element or plank 110 is removably secured to the building support frame to facilitate easy

replacement of a decking element if required after installation.

[0044] Referring now specifically to FIGs. 3a and 3b, each discrete base jointer element 140

comprises a substantially 'U'-shaped channel, comprising a base portion in the form of a central

web 142 from which two spaced apart arms 144, 145 extend substantially perpendicularly. A flange 146, 148 extends substantially orthogonally from each of arms 144, 145 respectively remote from

the central web 142. Flanges 146, 148 extend orthogonally in opposing directions away from the

central web 142. As will be described in more detail below and with reference to FIG. 4, such an

arrangement allows each flange 146, 148 to engage with a recess 118 located in side faces 116

intermediate the first and second major surfaces 112, 114 of adjacent decking elements 110 as

shown in FIG. 4. In one embodiment, as shown in FIG. 4, discrete base jointer element 140 is

provided with a gripping formation 147 on the underside of flange 146, 148. The presence of

gripping formation 147 helps to restrain lateral movement of decking element 110 which may come

about as a consequence of environmental cycling or lateral loading effects from foot traffic and the

like. Discrete base jointer element 140 is further provided with a recess 152 located on each arm

144, 145 respectively.

[0045] Discrete base jointer element 140 is provided with one or more apertures 150, 151, 153a and 153b such as those shown in FIG. 3b, to facilitate location of the fastener for securing the

discrete base jointer element 140 to the building support frame. Each of apertures 150, 153a and

153b are located at different distances from central aperture 151 in the base portion 142 of base

jointer element 140. Consequently, the apertures 150, 153a and 153b are also considered to be

located at different distances from the ends of the base jointer element 140 wherein the ends of

the base jointer element 140 are the edges of the base jointer element 140 remote from central

aperture 151. Central aperture 151 facilitates location of fastener 154 to secure base jointer

element 140 to joists 132, whilst apertures 150, 153a and 153b are provided to locate further

fasteners to secure base jointer element 140 to joist 132 or to further supporting joist members as

and if required. For example, one or more of apertures 150, 153a and 153b can be used in addition

to or instead of central aperture 151 to allow for variations in the building support frame to which

the discrete base jointer element 140 is secured. Alternatively, apertures 150, 153a and 153b can

be used in the event that supporting joints 132 are non-standard or the supporting joists are located

at different joint spacings from each other. In a further alternative arrangement, apertures 150,

153a and 153b can be used in addition to central aperture 151 to locate further fasteners in the

instance where additional supporting joists are provided, for example, supporting joists located at

the edge of flooring structures. In one example, aperture 153a is located approximately 50mm from

the edge of the base jointer element 140, whilst aperture 153b is located approximately 20mm from

the edge of the base jointer element 140. In use, the end user selects the most appropriate

apertures 150, 151, 153a and/or 153b to locate fasteners to secure base jointer element 140 to

supporting joists 132 and/or any additional supporting joists.

[0046] In use, each discrete base jointer element 140 is firstly secured to the building support

frame in a predetermined position before engaging with decking elements 110 to locate the decking

elements 110 on the building support frame.

[0047] Referring to FIG's. 2 and 4, discrete base jointer element 140 is secured to joist 132 such

that the long axis of base jointer element 140 is at a predetermined angle relative to the long axis of

the joist 132. In the embodiment shown the orientation of discrete base jointer element 140 is such

that the long axis of base jointer element 140 is substantially perpendicular to the long axis of joist

132. This ensures that a single decking element 110 (shown in dotted line outline in FIG. 2) is

supported across a number of joists 132. In practice, the predetermined angle of the discrete base

jointer element 140 relative to joist 132 is dependent on the desired orientation of decking

elements 110 relative to joist 132 in the completed structural flooring installation.

[0048] In further embodiments, it may be desirable to have a decking installation 100 with a

diagonal pattern wherein the decking elements 110 extend at an angle from one corner of the

decking installation 100 to the opposing farthest corner of the decking installation 100. In such

embodiments, discrete base jointer element 140 is secured to the building support frame or joists

132 such that the long axis of base jointer element 140 is at an angle that is between 30 and 90

relative to the long axis of the joist 132. In one example, the discrete base jointer element 140 is

secured at an angle of approximately 45, thereby creating a diagonal pattern on the decking

installation 100 in which the decking elements 110 extend at an angle from one corner of the

decking installation 100 to the opposing farthest corner of the decking installation 100. In all

embodiments, it is desirable, that the predetermined angle of orientation of the discrete base

jointer element 140 relative to joist 132 enables a single decking element 110 gain support across as

many joists 132 as possible within the building support frame.

[0049] In the embodiment shown in FIG. 2, length L of discrete base jointer element 140 is greater

than the width W of joist 132 on which it is installed. Thus, each discrete base jointer element 140

comprises a supported portion 157 and an unsupported portion 158. Supported portion 157 is that

portion of discrete base jointer element 140 which is directly supported by joist 132, whilst

unsupported portion 158 is that portion of discrete base jointer element 140 which is not directly

supported by joist 132. Portions Li and L2 of length L of discrete base jointer element 140 extend in opposing directions beyond the width W of joist 132 into the space between adjacent joists 132.

Consequently, portions L and L2 of length L of discrete base jointer element 140 are not directly

supported by joist 132 thereby forming the unsupported portions 158 of discrete base jointer

element 140. In the embodiment shown, the length of the supported region L3 is equal to the

width W of joist 132.

[0050] The configuration of each discrete base jointer element 140 is such that both the supported

and unsupported portions 156, 158 of each discrete base jointer element 140 contribute to the

overall load bearing capacity of decking installation 100. This in effect increases the area by which

discrete base jointer element 140 supports the weight of decking elements 110 and any applied

static or dynamic load. Thus, decking installation 100 benefits from having a higher load bearing

capacity than it would have if, for example, a clip mounting system is used.

[0051] In practice, when decking elements 110 are installed at one or more predetermined angles

relative to a joist 132 of a building frame 130, then the length L3 of the supported portion 157 relative to the lengths Li, L2 unsupported portions 158 of the discrete base jointer element 140 may vary depending on the predetermined angle of orientation of the discrete base jointer element

140 relative to joist 132 of the building support frame.

[0052] Referring now specifically to FIG 4, there is shown a cross sectional end view of a jointer

system 136. Each decking element 110 comprises a substantially rectangular cross-sectional plank,

each having a first major surface 112 providing a walking surface and a second major surface 114 for

contacting a building frame element, such as joist 132, wherein the second major surface 114 is

spaced apart from the first major surface 112 by side edge 116. In one embodiment, the elongate

edge bordering the junction between first major surface 112 and side edge 116 of decking element

110 is provided with a bevelled edge 120. Side edge 116 of decking element 110 comprises recess

118 along at least one portion of its length for accommodating at least one flange 146, 148 of

discrete base jointer element 140. Adjacent decking elements 110 each comprise two recesses 118

remote from each other in side edge 116 (only one recess is shown in each decking element 110),

such that each decking element 110 is able to accommodate opposing flanges 146, 148 of discrete

base jointer elements 140 in opposing recesses 118. In this way, each discrete base jointer element

140 is seated between adjacent decking elements 110 thereby locating the adjacent decking

elements 110 in series on the building support frame forming the decking installation 100 as shown

in FIG.1.

[0053] The width of each discrete base jointer element 140 determines the spacing between

adjacent decking elements 110. Flanges 146, 148 are tensioned against decking elements 110 by

fastener 154 through a central aperture 151 in central web 142. The length of arm 144 is configured

to match the distance between recess 118 and second major face 114 of decking element 110.

Gripping formation 147 on the underside of flanges 146, 148 aid in restraining decking element 110

from lateral movement in the event of environmental cycling or lateral loading effects from foot

traffic and the like. Discrete elongate base jointer elements 140 may be formed from a range of

materials including metals such as steel or aluminium, UV stabilized polymers, and polymer

composites such as inorganic fibre reinforced polymers.

[0054] Decking element 110 can be formed from any material accepted by local building regulatory

authorities for construction of decking installations. An example of a suitable material is fibre cement decking such as commercialized by James Hardie under the trademark HardieDeck".

[0055] The jointer system 136 of FIG. 4 further comprises cover strip 160. Referring now to FIG. 3c,

cover strip 160 has a pair of spaced apart support arms 166 which extend orthogonally from

opposing edges of body 164 in a direction away from the front face 162 of cover strip 160. Each

support arm 166 comprises a support shoulder 172, a locking formation 168 and an angled portion

170. Cover strip 160 may be formed from a range of materials including, but not limited to, metals

such as steel or aluminium, UV stabilized polymers, or inorganic fibre reinforced polymer

composites.

[0056] In one embodiment, cover strip 160 of jointer system 136 is releasably engaged with at least

one discrete elongate base jointer 140 of jointer system 136. In a further embodiment, cover strip

160 is configured to releasably engage with a plurality of discrete elongate base jointer elements

140. As shown in FIG. 4, cover strip 160 rests such that front face 162 is level with the lower edge of

bevelled edge 120 remote the first major face 112 of decking element 110. A clearance 176 is

provided between each support arm 166 of cover strip 160 and a respective side edge 116 of

decking element 110. Locking formation 168 of cover strip 160 and recess 152 of discrete base

jointer element 140 together releasably engage with each other in the form of a detent which

prevents movement of the cover strip 160 relative to the discrete elongate base jointer 140 without

the application of an external force. Opposing support shoulders 172 of support arms 166 comprise

stop mechanism 174 which engages with the upper surface of opposing flanges 146, 148 remote gripping formations 147 to prevent movement of the cover strip 160 toward the base

portion/central web 142 of the discrete elongate base jointer 140 thereby providing additional

support for cover strip 160.

[0057] Angled portion 170 of cover strip 160 assists in installation of cover strip 160 by providing a

ramp surface to reduce the amount of force required to urge locking formation 168 into releasable

engagement with recess 152 in discrete base jointer element 140 relative to a cover strip that does

not have an angled portion.

[0058] Referring now to FIG. 3d, a further cover strip 260 is shown. Similarly, further cover strip

260 comprises a pair of spaced apart support arms 266 which extend orthogonally from opposing

edges of body 264 in a direction away from the front face 262 of cover strip 260. Body 264 further

comprises sections 282, 284 which extend in opposing planar directions from body 264. Each support arm 266 comprises a support shoulder 272, a locking formation 268 and an angled portion

270 which operate together as described above in relation to FIG. 3c.

[0059] As before, cover strip 260 may also be formed from a range of materials including, but not

polymer composites. Front face 262 of cover strip 260 provides an aesthetic finish. Front face 262

of cover strip 260 may be decorated by painting, anodizing (if made from aluminium), powder

coating, forming a pattern into the surface of front face 262 and the like.

[0060] Referring now to FIGs. 2, 4 and 5, each discrete base jointer element 140 is secured to joist

132 using fastener 154 such that a gap 134 exists between adjacent discrete elongate base jointer

elements 140. Length L of each discrete base jointer element 140 is less than the spacing S used

between adjacent joists 132, thereby ensuring a gap 134 between adjacent discrete elongate base

jointer elements 140 when two discrete elongate base jointer elements are installed on adjacent

joists 132. Gap 134 creates a drainage pathway for liquid water run-off and a ventilation path for

water vapour in the completed decking installation 100. This is particularly advantageous where

improved ventilation or a fast draining decking installation 100 is required such as, for example,

tropical regions which experience areas of high rainfall or where a piece of machinery, such as a

pump which generates heat &/or humidity during operation is installed underneath a decking

installation.

[0061] Cover strip 160 is configured to facilitate drainage and water vapour ventilation in jointer

system 136 whilst also providing fire protection. Clearance 176 between side edges 116 of adjacent

decking elements 110 and opposing support arms 166 of cover strip 160 is narrow enough to

prevent fire embers from entering the decking system 100 whilst also preventing water build up and

facilitating evaporation of water vapour thereby ventilating the space underneath a decking

installation. In one embodiment clearance 176 is between approximately 1 and 5mm. The

dimension of clearance 176 necessary to prevent retention of water through capillary action will

depend on the respective surface energies resulting from materials selection and/surface treatment

of side edges 116 of decking elements 110 and support arms 166 of cover strip 160. It is possible for

water to easily drain away, particularly in gaps 134 which do not have a discrete base jointer

element 140 positioned beneath cover strip 160. Stop mechanism 174 of cover strip 160 further

comprises a rounded portion which provides a surface that promotes any water that falls on its

surface to drain away without accumulating.

[0062] A schematic of the drainage 200 and ventilation 300 pathways in gap 134 between adjacent

discrete elongate base jointer elements is shown in FIG. 5. The distance of the clearance between

side edge 116 and support arm 166 is sufficient that it is not overcome by capillary forces in any

water that ingresses or evaporating water vapour that re-condenses on the surfaces. In an

exemplary embodiment comprising a fibre cement decking element 110 and a metal cover strip

160, for example a cover strip formed from extruded aluminium, clearance 176 is preferably

between approximately 1-5mm and more preferably approximately 2mm +/-1mm.

[0063] TESTING OF DRAINAGE AND VENTILATION:

[0064] A simple test demonstrating the efficiency of the drainage and ventilation of the

embodiment shown in FIG. 4 in comparison to a test assembly comprising continuous base jointers

rather than the discrete elongate base jointer elements was performed.

[0065] In each assembly, a 1 square metre decking section with side walls approximately 150mm

high. The joints between the side wall and the surface of the decking elements were sealed, so that

the only drainage that is measured is that through the decking surface. Once sealed, a removable

sheet is placed across the decking surface and extending to the top of the side walls to form a

reservoir. The reservoir is filled with a predetermined volume of water, for example 50 litres. The

removable sheet is removed and a stopwatch used to record the time for complete drainage to occur.

[0066] The comparative test of the decking system of FIG. 4 with discrete elongate base jointer

elements versus the decking system with a continuous base jointer showed a drainage time for 50L

water of over 1 minute for the continuous base jointer as opposed to under 15 seconds for discrete

elongate base jointer elements.

[0067] Referring now to FIG. 6, there is shown a cross-sectional end view of a decking installation

according to a further embodiment of the present disclosure comprising cover strip 260. Sections

282, 284 extending in opposing planar directions from body 264 reduce the open area of clearance

between side edges 116 of adjacent decking elements 110 and opposing support arms 166 of cover

strip 160. Cover element 260 provides additional security between adjacent decking members 110

in bush fire affected zone. In such locations,it may be desirable to further reduce the risk of burning embers being able to be transported through any gaps into the space beneath the decking elements 110. In FIG. 6, sections 282, 284 extend from body 264 of cover strip 260 to substantially cover the space between side edges 116 of adjacent decking elements 110.

[0068] A method of constructing a structural flooring installation 100 is described in the steps

below.

[0069] Step 1: At least one base jointer 140 is releasably fixed to joist 132 by fastener 154.

Supported portion 157 of base jointer 140 is supported directly by joist 132 to which it is fixed,

leaving at least one extended portion or unsupported portion 158 extending into a respective space

between adjacent joists 132.

[0070] Step 2: Decking element 110 is positioned across joists 132 such that side edge 116 is

brought into contact with flange 146 of at least one discrete base jointer element 140, each flange

146 being urged into recess 118 in side edge 116 of decking element 110. In a typical decking

installation 100 where each decking element 110 is intended to be installed perpendicular to the

supporting joists, decking element 110 is positioned on joist 132 adjacent at least one base jointer

140 such that side edge 116 of decking element 110 is parallel to the long axis of each base jointer.

[0071] Step 4: One or more further discrete elongate base jointer elements 140 are each

positioned over one or more further joists 132 and aligned such that the long axis of each discrete elongate base jointer elements 140 are parallel to the opposing side edge 116 of decking element

110. Flange 146 of each discrete base jointer element 140 is inserted into recess 118 on opposing

side edge 116 of decking element 110 relative to the position of the discrete elongate base jointer

elements 140 of Step 1.

[0072] Step 5: Once each discrete base jointer element 140 is located on the opposing side edge

116 of decking element 110, the exact location of each discrete base jointer element 140 is adjusted

as desired to ensure that each discrete base jointer element 140 is located approximately in the

centre of the width of joist 132. Each discrete base jointer element 140 can then be releasably fixed

to joist 132 by fastener 154. Fastener 154 may be a screw or other releasable fastener. The fastener

being releasably fixed to the joist allows for removal and re-installation in the case of a decking

element becoming damaged or worn over time.

[0073] Step 6: Steps 1 to 5 are repeated until the desired decking size is achieved.

[0074] Step 7: Cover strip 160 is releasably fixed in place over discrete base jointer elements 140 by

positioning of cover strip 160 over the space between each adjacent decking element 110 and

urging angled portion 170 on each support arm 166 to move into the "U" shaped channel formed

between arms 144, 145 of each discrete base jointer element 140 until locking formation 168

engages with opposing recesses 152 of arms 144, 145. Conveniently, cover strip 160 is releasably

fixed to each discrete elongate base jointer element, as the application of pressure on the underside

of body 164 of cover strip 160 can overcome the frictional fit, and the cover strip can be removed

temporarily if necessary, such as for cleaning or repainting. When locking formation 168 has

engaged with recess 152, support shoulder 172 engages with the top of flange 146 for added

support.

[0075] One installed, decking installation 100 can function to provide a structural flooring

installation, capable of efficiently draining away liquid water, and also allowing improved ventilation

or evaporation of any water vapour that had accumulated underneath the decking installation 100.

Each discrete base jointer element 140 works in co-operation a cover strip 160 and with decking

elements 110 to provide a decking installation with improved drainage and improved load bearing

capacity compared to clip based decking installation systems.

[0076] Optionally in a further embodiment, a further step of providing a starter strip to attach the

outermost external edges of the decking installation is provided. In one embodiment, the starter

strip is releasably fixed to at least one joist 132 in a predetermined position. Conveniently, the

starter strip is configured to provide an edge trim appearance as well as functioning as a starter

strip. In one embodiment the starter strip is in the form of a "C" channel.

[0077] Optionally, in another further embodiment of the decking installation, at the ends of the

decking installation, discrete base jointer element 140 may be fixed to joist 132 through an end

aperture 150, 153 (FIG. 3b) by end fastener 154, as shown at the left in FIG. 2. By fixing through an

end aperture 150, no part of discrete elongate base jointer 140 will extend beyond the end of

decking element 110 at the end of a decking installation, and there will be no need to trim any

excess or overhang material from the discrete elongate base jointer. Optional end aperture 150 may

be formed a predetermined distance from an end of discrete base jointer element 140. In a decking installation constructed on a timber frame, end aperture 150, 153 may be conveniently located a

distance of 20-80mm, and preferably around 50mm, from the end. Differences in building practices geographically, may require different positioning, and the specific distance can be varied within that range, suited to local building practice. In some embodiments only one aperture 151 is located on the central web of each discrete base jointer element 140.

[0078] It will of course be understood that the invention is not limited to the specific details

described herein, which are given by way of example only, and that various modifications and

alterations are possible within the scope of the disclosure as defined in the appended claims.

[0079] Certain features that are described in this disclosure in the context of separate

implementations can also be implemented in combination in a single implementation. Conversely,

various features that are described in the context of a single implementation can also be

implemented in multiple implementations separately or in any suitable subcombination. Moreover,

although features may be described above as acting in certain combinations, one or more features

from a claimed combination can, in some cases, be excised from the combination, and the

combination may be claimed as any subcombination or variation of any subcombination.

[0080] Moreover, while methods may be depicted in the drawings or described in the specification

in a particular order, such methods need not be performed in the particular order shown or in

sequential order, and that all methods need not be performed, to achieve desirable results. Other

methods that are not depicted or described can be incorporated in the example methods and processes. For example, one or more additional methods can be performed before, after,

simultaneously, or between any of the described methods. Further, the methods may be

rearranged or reordered in other implementations. Also, the separation of various system

components in the implementations described above should not be understood as requiring such

separation in all implementations, and it should be understood that the described components and

systems can generally be integrated together in a single product or packaged into multiple products.

Additionally, other implementations are within the scope of this disclosure.

[0081] Conditional language, such as 'can', 'could', 'might', or 'may', unless specifically stated

otherwise, or otherwise understood within the context as used, is generally intended to convey that

certain embodiments include or do not include, certain features, elements, and/or steps. Thus, such conditional language is not generally intended to imply that features, elements, and/or steps

are in any way required for one or more embodiments.

[0082] Conjunctive language, such as the phrase 'at least one of X, Y, and Z' unless specifically

stated otherwise, is otherwise understood with the context as used in general to convey that an

item, term, etc. may be either X, Y or Z. Thus, such conjunctive language is not generally intended to

imply that certain embodiments require the presence of at least one of X, at least one of Y, and at

least one of Z.

[0083] Language of degree used herein, such as the terms 'approximately', 'about', 'generally' and 'substantially' as used herein represent a value, amount, or characteristic close to the stated value,

amount or characteristic that still performs a desired function or achieves a desired result. For

example, the terms 'approximately', 'about', 'generally' and 'substantially' may refer to an amount

that is within less than or equal to 10% of, within less than or equal to 5% of, within less than or

equal to 1% of, within less than or equal to 0.1% of, and within less than or equal to 0.01% of the

stated amount.

[0084] Although making and using various embodiments are discussed in detail below, it should be

appreciated that the description provides many inventive concepts that may be embodied in a wide

variety of contexts. The specific aspects and embodiments discussed herein are merely illustrative

of ways to make and use the systems and methods disclosed herein and do not limit the scope of

the disclosure. The systems and methods described herein may be used in conjunction with a

jointer system for use in a structural flooring system, and are described herein with reference to this application. However, it will be appreciated that the disclosure is not limited to this particular field

of use.

[0085] Some embodiments have been described in connection with the accompanying drawings.

The FIG.s are drawn to scale, but such scale should not be limiting, since dimensions and

proportions other than what are shown are contemplated and are within the scope of the disclosed

inventions. Distances, angles, etc. are merely illustrative and do not necessarily bear an exact

relationship to actual dimensions and layout of the devices illustrated. Components can be added,

removed, and/or rearranged. Further, the disclosure herein of any particular feature, aspect, method, property, characteristic, quality, attribute, element, or the like in connection with various

embodiments can be used in all other embodiments set forth herein. Additionally, it will be

recognized that any methods described herein may be practised using any device suitable for

performing the recited steps.

[0086] While a number of embodiments and variations thereof have been described in detail,

other modifications and methods of using the same will be apparent to those of skill in the art.

Accordingly, it should be understood that various applications, modifications, materials, and

substitutions can be made of equivalents without departing from the unique and inventive

disclosure herein or the scope of the claims.

Claims

CLAIMS:

1. A jointer system comprising at least one discrete elongate base jointer element releasably

engageable with a cover strip, wherein the at least one base jointer element comprises a substantially 'U'-shaped channel, the

substantially 'U'-shaped channel comprising a base portion and two spaced apart arms,

wherein each arm extends substantially perpendicularly from the base portion, each arm

further comprising a flange remote from the base portion wherein the flange extends

substantially orthogonally from each respective arm in a direction substantially parallel to

and away from the base portion;

wherein, the cover strip comprises a body having a front face, a pair of spaced apart support

arms which extend orthogonally from opposing edges of the body remote from the front

face, each support arm comprising a locking formation;

wherein, the spaced apart support arms of the cover strip are at least partially seated within

the U-shaped channel of the base jointer element such that the locking formation of each

spaced apart support arm of the cover strip releasably engages with one of the two spaced

apart arms of the U-shaped channel of the base jointer element; and

further comprising a plurality of discrete elongate base jointer elements releasably engageable with the cover strip, wherein the plurality of discrete elongate base jointer

elements are spaced apart from each other whilst in engagement with the cover strip.

2. The jointer system as claimed in Claim 1, wherein each arm of the two spaced apart arms of

the discrete elongate base jointer element comprises a recess located within the U-shaped

channel.

3. The jointer system as claimed in Claim 2, wherein the recess of each arm of the two spaced

apart arms of the discrete elongate base jointer element is located on each arm such that

the recesses are opposing recesses located opposite each other on the two spaced apart

arms.

4. The jointer system as claimed in any one of the preceding claims, wherein each flange of the

discrete elongate base jointer element is provided with a gripping formation.

5. The jointer system as claimed in any one of the preceding claims, wherein the base portion

of the U-shaped channel of the discrete elongate base jointer element further comprises one or more apertures.

6. The jointer system as claimed in any one of the preceding claims, wherein the base portion

of the U-shaped channel of the discrete elongate base jointer element further comprises a

groove to facilitate water drainage from the discrete base jointer element.

7. The jointer system as claimed in any one of the preceding claims, wherein the discrete

elongate base jointer elements is formed from a range of materials including metals such as steel or aluminium, UV stabilized polymers, and polymer composites such as inorganic fibre

reinforced polymers.

8. The jointer system as claimed in any one of the preceding claims, wherein each support arm

of the cover strip element further comprises a support shoulder and an angled portion,

wherein the locking formation is located between the support shoulder and the angled

portion.

9. The jointer system as claimed in any one of the preceding claims, wherein the body of the

cover strip further comprises a planar section extending from each of the opposing edges of

the body such that the pair of spaced apart support arms extend orthogonally from the

opposing edges intermediate the planar sections of the body.

10. The jointer system as claimed in Claim 9, wherein the configuration of the cover strip forms

a substantially Pi (n) shaped cover strip.

11. The jointer system as claimed in any one of the preceding claims, wherein the cover strips

may be formed from a range of materials including, but not limited to, metals such as steel or aluminium, UV stabilized polymers, or inorganic fibre reinforced polymer composites.

12.The jointer system as claimed in any one of the preceding claims, wherein the front face of

the cover strip comprises an aesthetic finish, the aesthetic finish including, but not limited

to, painting, anodizing, powder coating or a pattern formed on the front face.

13.The jointer system as claimed in any one of the preceding claims, wherein the locking

formation of each spaced apart support arm of the cover strip releasably engages with the

recess located on the two spaced apart arms of the U-shaped channel of the base jointer

element.

14.The jointer system as claimed in Claim 8, wherein support shoulders of the spaced apart

support arms of the cover strip are configured to engage with the flanges of the base jointer

element such that the support shoulders provide a stop mechanism.

15.The jointer system as claimed in Claim 14 wherein the distance between the support

shoulder of the spaced apart support arms and the locking formation of the spaced apart support arms is such that the support shoulders allow the spaced apart support arms of the

cover strip to at least partially seat within the U-shaped channel of the base jointer element whilst each locking formation is able to engage with one of the two spaced apart arms or recess of the U-shaped channel of the base jointer element.

16.The jointer system as claimed in claim 8 wherein the angled portion of the cover strip are

configured to provide a ramp surface to reduce the amount of force required to urge locking

formation into releasable engagement with one of the two spaced apart arms or recess of the U-shaped channel of the base jointer element.

17. A building array for use in a structural flooring or decking system comprising at least two

adjacent building elements and at least one jointer system intermediate the at least two

adjacent building elements, wherein the jointer system comprises at least one discrete

elongate base jointer element releasably engageable with a cover strip, wherein

the at least one base jointer element comprises a substantially 'U'-shaped channel, the

and away from the base portion;

face, each support arm comprising a locking formation; wherein, the spaced apart support arms of the cover strip are at least partially seated within

apart arms of the U-shaped channel of the base jointer element; and

wherein the jointer system comprises a plurality of discrete elongate base jointer elements

releasably engageable with a cover strip, wherein the plurality of discrete elongate base

jointer elements are spaced apart from each other whilst in engagement with the cover

strip and wherein the plurality of base jointer elements each releasably engage with the at

least two adjacent building elements.

18.The building array as claimed in Claim 17, wherein each building element comprises a

substantially rectangular cross-sectional plank, having a first major surface and a second

major surface spaced apart from the first major surface by a side edge, wherein the side

edge of each building element comprises a recess along at least one portion of its length.

19.The building array as claimed in Claim 17 or Claim 18, wherein the junction between the

first major surface and the side edge of each building element is provided with a bevelled

edge.

20.The building array as claimed in any one of Claims 17 to19, wherein the building element is

a decking element.

21.The building array as claimed in any one of Claims 17 to 20, wherein the building element is

a fibre cement building element.

22.The building array as claimed in Claim 21, wherein the building element is a fibre cement

decking element.

23.The building array as claimed in any one of Claims 17 to 22, wherein each discrete base

jointer element comprises a long axis and is secured to a building support frame having a

long axis such that the long axis of base jointer element is at a predetermined angle relative

to the long axis of the to the building support frame.

24.The building array as claimed in Claim 23, wherein the long axis of each discrete base jointer

element is substantially perpendicular to the long axis of building support frame.

25.The building array as claimed in Claim 23, wherein each discrete base jointer element is

secured to a building support frame such that the long axis of base jointer element is at an

angle that is between 300 and 800 relative to the long axis of the components of the building

support frame.

26.The building array as claimed in Claim 23 or Claim 25, wherein each discrete base jointer

element is secured to a building support frame such that the long axis of base jointer

element is at an angle of approximately 45 relative to the long axis of the components of

the building support frame.

27.A method of making a building array comprising at least two adjacent building elements and

at least one jointer system, the method comprising the steps of;

(a) Providing a support framework;

(b) Releasably fixing at least one discrete base jointer element to the support

framework, wherein the at least one base jointer element comprises a

substantially 'U'-shaped channel, the substantially 'U'-shaped channel

comprising a base portion and two spaced apart arms, wherein each arm

extends substantially perpendicularly from the base portion, each arm

further comprising a flange remote from the base portion wherein the flange extends substantially orthogonally from each respective arm in a

direction substantially parallel to and away from the base portion;

(c) Positioning and releasably fixing one or more further discrete base jointer elements to the support framework and the positioned first building

element on the support framework such that the one or more further

discrete base jointer elements are positioned in series with fixed at least

one discrete base jointer element;

(d) Positioning a second building element on the support framework adjacent

to the first building element such that the second building element engages

with the fixed at least one discrete base jointer element and one or more

further discrete base jointer elements;

(e) Repeating step (c) to (e) as often as required until the desired building array

size is achieved; and

(f) Releasably fixing a cover strip in place over one or more of the discrete base jointer elements and one or more of the further discrete base jointer

elements as desired, wherein the discrete elongate base jointer elements

are spaced apart from each other whilst in engagement with the cover strip, wherein the cover strip comprises a body having a front face, a pair of

spaced apart support arms which extend orthogonally from opposing edges

of the body remote from the front face, each support arm comprising a

locking formation, and wherein the spaced apart support arms of the cover strip become at least partially seated within the U-shaped channel of the

base jointer element such that the locking formation of each spaced apart

support arm of the cover strip becomes releasably engaged with one of the

two spaced apart arms of the U-shaped channel of the base jointer

element.

112 112

154 1/6

160

140 110 Fig. 1