EP2388384B1 - Attic platform - Google Patents
Attic platform Download PDFInfo
- Publication number
- EP2388384B1 EP2388384B1 EP11004099.5A EP11004099A EP2388384B1 EP 2388384 B1 EP2388384 B1 EP 2388384B1 EP 11004099 A EP11004099 A EP 11004099A EP 2388384 B1 EP2388384 B1 EP 2388384B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- joists
- joist
- leg
- mounting
- arm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Not-in-force
Links
- 239000004033 plastic Substances 0.000 description 9
- 229920003023 plastic Polymers 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 239000011810 insulating material Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 210000002105 tongue Anatomy 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 239000012774 insulation material Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002023 wood Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
- E04B5/12—Load-carrying floor structures formed substantially of prefabricated units with wooden beams
-
- 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
- E04B5/14—Load-carrying floor structures formed substantially of prefabricated units with beams or girders laid in two directions
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/024—Sectional false floors, e.g. computer floors
- E04F15/02447—Supporting structures
Definitions
- This invention relates to apparatus for providing a raised platform area in an attic having a plurality of generally parallel joists.
- the invention also relates to a method of constructing the same.
- apparatus for providing a platform area in an attic having a plurality of generally parallel joists, the apparatus comprising: a plurality of legs, each leg having a first end and a second end, and having a joist mounting at the first end comprising a pair of jaws configured to engage only one joist and a platform support at, or in the region of, the second, opposite end, the platform support at the second end comprising two upstanding substantially parallel walls; and a plurality of boards for being supported by the platform supports of at least two of the plurality of legs, each board comprising a groove in its lower surface for receiving one of the upstanding walls, the apparatus being arranged, in use, to provide a raised platform over adjacent joists with boards mounted on legs connected to different joists.
- the apparatus may further comprise a plurality of longitudinal arms, wherein each leg further comprises an arm mounting arranged such that an arm can be connected to extend between two or more legs on respective joists.
- the arm mounting can be adjacent the level of the platform support in order that the arm may provide underlying support to an overlying board across the inter-joist space.
- the arm mounting may comprise an aperture, recess or niche and the arm may have sufficient length to span two or more inter-joists spaces by means of passing through the aperture, recess or niche of an intermediate leg.
- each leg can be arranged such that the connected arm extends substantially transverse to the direction of the joists.
- the walls may extend transverse to the direction of the jaws through which the joists will run in use.
- Each leg may further comprise a spar mounting arranged generally parallel to the direction of the joists, and into which a longitudinal spar can be connected to provide additional underlying support to an overlying board or boards.
- the joist mounting of each leg may comprise a pair of resilient jaws.
- the jaws can be provided by upwardly projecting tabs within a U-shaped clamp.
- the joist mounting can further comprise means for screwing or bolting the joist mounting to a joist.
- the joist mounting and platform support may be provided as separate components separated by a longitudinal post, for example a wooden, plastics or metal post. In the case of a plastics or metal post, its cross section could be circular or, as is the preferred case here, generally rectangular with concave sides.
- the joist mounting portion may be a U-shaped channel extending generally transverse to the orientation of the tongue and groove arrangement.
- a raised platform for covering an additional layer of insulating material is constructed using a plurality of components made up of two types, namely a leg 8 and a rectangular board 20.
- the leg 8 comprises an elongate plastics member 10 having, at a lower end, a joist mount 12 and at the other, upper end, a platform mount 14.
- the leg 8 is formed as a single piece of material, although it could be made of separate parts if required.
- the joist mount 12 has a fork-like shape in order to fit either side of an underlying joist of rectangular cross-section. Given the standardised dimensions of joists, it is straightforward to produce a mount whose inner recess will closely confirm with the joist width, thereby providing a secure fit when the fork is placed over the joist.
- a pair of opposed tabs 13 extending from the top of the mount 12 in a direction generally parallel to the joist axis X-X have respective holes provided for screwing or bolting the leg 8 to the joist for added stability.
- the platform mount 14 comprises three parallel walls 16, 17 defining a pair of support surfaces 15 either side of the central wall 16.
- the central wall 16 is slightly taller than the outer walls 17.
- the walls 16, 17 and support surfaces 15 extend along an axis Y-Y substantially transverse to the joist axis X-X.
- each rectangular board 20 is made of wood or wood-derived material such as plywood.
- Each board 20 is pre-cut to a standard size and, along both lengthwise edges, spaced inwards by a distance approximately equal to the width of one of the support surfaces 15, is a longitudinal groove 21.
- the width and depth of each groove 21 is substantially the same as the corresponding dimensions of one of the outer walls 17, enabling a tongue-and-groove (or, alternatively, a mortise) joint to be made when placing a board 20 onto the platform mount 14 of a leg 8.
- adhesive can be pre-applied but this is by no means necessary.
- first and second lines of, in this case, four legs 8 are attached to respective joists 4 adjacent one another.
- the legs 8 on each joist 4 are of course separated by the guidelines 23.
- the resulting support surfaces 15 extend generally transverse to the joist axes.
- a first rectangular board 20 is mounted onto eight underlying legs 8, specifically by locating the pre-cut grooves 21 over the tongues provided by the innermost outer walls 17 of each leg.
- inner wall 16 terminates substantially level with the upper surface of the board 20; the presence of the inner wall between adjacent boards minimises lateral movement but there should be no (or minimal) protrusion to avoid creating a trip hazard.
- FIG 10 shows the cavity that remains under the raised boards 20 connected in the manner described (for clarity, no insulating material is shown) and, in particular, it can be clearly seen how the outer walls 17 locate within the grooves 21 running transverse to the joists 4.
- Figure 11 is a close-up view of the aforementioned leg 8 with dimensions shown for further information.
- the resulting structure enables a raised platform or decking to be fitted (either on a 'new build' project or as a retrofit system) relatively easily and cost-effectively using just two types of component.
- the structure enables the laying of at least two layers of insulating material whilst maintaining a storage or walking platform in spite of the joists being hidden.
- the second embodiment comprises a set of legs 33 and boards 35 provided together with further components in the form of transverse arms 37 and, optionally, spars 39.
- this raised platform system 30 provides a framework or lattice structure, as generally depicted in exploded form in the Figure.
- each leg 33 comprises an elongate structure made of three separable parts.
- the major part is an elongate hollow post 41 made of plastics material of square/rectangular cross section. Attached to the top of the post 41 is a plastics support cap 45 (hereafter simply "cap”) and, attached to the bottom is a joist mount 43.
- cap plastics support cap 45
- the cap 45 includes a V-shaped groove 47 recessed into its upper surface, below its upper support level, and which passes from one side to the other, including through opposed lateral faces of the cap. On the transverse faces are provided a pair of opposed pegs 51.
- the mount 43 comprises a plastics component comprising a hollow base 61 of square/rectangular form defining a recessed interior 62 whose outer walls conform to and engage with the outer wall of the post 41. Extending below the base 61 is a pair of lateral arms 55, tapering slightly inwards. From the end of each arm 55, extending upwards back towards the base 61, is a resilient plastics tab 57, both tabs providing a pair of jaws which, in use, engage and grip the underlying joist 4. As shown in the schematics depicted above the main diagram, the jaws 57 allow the mount 43 to fit over (the lateral sides of) joists 4 of varying widths whilst remaining stable.
- the joist mount 43 also includes a cantilevered plate 53, extending from one side thereof in alignment with the arms 55, that includes a pair of holes enabling the mount, when located over a joist 4, to be screwed to the joist to provide additional stability.
- a cantilevered plate 53 extending from one side thereof in alignment with the arms 55, that includes a pair of holes enabling the mount, when located over a joist 4, to be screwed to the joist to provide additional stability.
- One or more holes is/are suitable.
- the cap 45 is moulded to provide a particular predefined shape enabling the arm components 37, 39 to be connected to it and for supporting the boards above it.
- the upper surface of the cap 45 comprises a horizontal platform 48 having the V-shaped groove 47 recessed within it extending from one side to the other.
- a pair of retaining tabs 50 extend partly over the groove 47 in the central region of the platform 48.
- a pair of parallel walls 49 extend upwards from the platform 48, the purpose of each being to engage the underside groove of a board 35, in much the same way as the outer walls 17 of the first embodiment.
- each peg 51 protrude from the cap surface.
- the profile of each peg 51 is approximately triangular.
- the mount 43 and cap 45 are arranged, in use, to be connected to the post 41 in a particular orientation relative to one another; the groove 47 is arranged to run along an axis transverse to that of the groove between jaws 55, 57.
- the Figures show orthogonal X, Y, Z axes to give a general indication of the relative orientations with respect to joists 4.
- the post 41 is shown in perspective and sectional views.
- FIG 18 shows perspective and sectional views of one of the transverse arms 37; it will be seen that each arm 37 has an arrow-like cross-section with an upwardly projecting wall 71 and a lower triangular part 73.
- the triangular part 73 is shaped so as to conform with the groove shape 47 in the cap 45, the wall 73 being narrow enough to pass between tabs 50 and projecting proud of the platform 48.
- the cap 45 enables one or more arms 37, 39 to be connected into either the groove 47 or to one of the pegs 51 in order to provide additional support beneath the boards 35.
- a transverse arm 37 will provide, as the name suggests, support in the direction generally transverse to the joists 4.
- the spars 39 run generally parallel to the joists 4.
- the spars 39 have either the same, or a similar cross-section, to that of the transverse arms 37 such that the ends can connect to the pegs 51. Both types can be made out of a plastics or metal material, for example steel or aluminium. As indicated in Figure 12 , the length of the each transverse arm 37 is greater than the width between adjacent joists 4; in fact each arm preferably extends from a first joist to a third joist via an intermediate joist, as enabled by the V-shaped groove 47 in each cap 45.
- the spars 39 which are considered optional, need not be as long as the transverse arms 37. Their role is to add extra support underneath the boards, in addition to the transverse arms 37, in the orthogonal direction.
- legs 33 and arms 37, 39 whilst preferable, is not essential. Adjustments and variations are possible; however, if rectangular boards 35 are to be used, this arrangement is the preferred choice.
- the spars 39 By making the spars 39 a predetermined length, they can be used to assist spacing apart the legs 33 on each joist 4.
- the fitter need only mark out a first row of legs 33, and then use the spars 39 extending parallel over the joists 4 to indicate where the next row of legs should be fitted.
- first and second lines of, in this case, four legs 8 are attached to respective joists 4 adjacent one another. The legs 8 on each joist 4 are of course separated by the guidelines 23.
- the resulting support surfaces 15 extend generally transverse to the joist axes.
- An additional fixing or clip may be provided to enable the boards to be secured to the transverse arms 37. This may comprise providing a groove or continuous slot in each transverse arm 37 and a metal clip that would be pushed down vertically between the boards to engage into the slot.
- the metal clip could, for example, be T-shaped.
- an interconnecting arm may be provided to join together axially aligned transverse arms 37.
- This interconnection may comprise a plug or tube that, for example, could push into or over one end of each adjacent arm 37. This may be important since the spacing between joists cannot be predicted and so it is not always the case that the transverse arms 37 will meet directly over a leg 33.
- FIG. 21 to 26 a third embodiment outside the scope of the appended claims, now be described.
- This embodiment is similar to the first in that it does not require the use of transverse arms or spars; it offers further advantages in that it does not require the legs to be accurately spaced apart in order to fix the boards over the parallel walls 39, as is the case in the second embodiment.
- Figures 21 and 22 shows a leg 80 for use in this third embodiment.
- the leg 80 is an elongate plastics member or post 83 having, at a lower end, a joist mount 81 and at the other, upper end, a platform mount 82.
- the joist mount 81 comprises an adjustable bracket made up of an integral L-shaped member 84 which has a pair of inner channels 86 and a separate, slidable L-shaped member 87 the edges of which engage within the channels to allow adjustment of the mounting channel defined between jaws of the opposed L-shaped members.
- Each of the L-shaped members 84, 87 have a friction or sawtooth -type surface 87 which together allow the L-shaped members to be fixed relative to each other; relative adjustment is achieved by applying an external force to one or both of the members to overcome the inherent resistance of the opposing sawtooth surfaces.
- the platform mount 82 comprises a first horizontal surface 88, from which projects an inverted L bracket 89, approximately half-way along. On the opposite side of the L-shaped bracket 89 is a second horizontal surface 90.
- the leg 80 is preferably used with boards 92 that differ from those described previously in that, rather than having a longitudinal slot, they have longitudinal grooves 94 formed along the lateral sides.
- a board 92 is laid by inserting one lateral edge under the inverted L bracket 89 of each spaced apart leg 80 on the first row of joists, so that the bracket part extends into the groove 94. The opposite edge is then lowered onto the first horizontal surface 88 of each leg 80 in the next row. The board 92 is then screwed vertically to the legs 80 on the left hand side and horizontally to the legs on the right hand side, using the holes provided.
- Figures 25 and 26 show the next board 92 being laid and the resulting surface.
- each embodiments do not require there to be a fixed and predetermined distance between adjacent joists 4, which in practice will vary. Joists are commonly spaced on 400mm, 500mm or 600mm centres and, even then, there will be small variations either side of the stated figure. In a system where the boards are required to lie directly over two adjacent joists, a range of different board widths would have to be made available to ensure the lateral edges are supported. The above three embodiments, however, promote the use of boards which lie transverse to the direction of the joists, and whose length is such as to span two or more joists.
- each leg engage or support the boards using at least a groove arrangement aligned or extending generally transverse to the direction of the joists, thereby defining the laying direction and allowing adjustment of a board's position along this transverse direction.
- a board there is no requirement for a board to be of a particular width or length and the system is totally flexible.
- the first and second embodiments use a tongue (two upstanding from the support surface) and groove (two in each board) arrangement; the third embodiment employs a tongue portion formed along the lengthwise edge of each board arranged to engage within the channel defined by the L-shaped bracket 89.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Engineering & Computer Science (AREA)
- Floor Finish (AREA)
Description
- This invention relates to apparatus for providing a raised platform area in an attic having a plurality of generally parallel joists. The invention also relates to a method of constructing the same.
- Referring to
Figure 1 , it is common to lag or insulate the attic or loft space of a building by laying aninsulation material 2, usually a mineral wool, between theparallel joists 4. It is also known to add a further layer of insulation in the transverse direction to further reduce heat loss. A problem with adding this further layer is that it is no longer clear where the underlying joists are, and, therefore where it is safe to store items or walk on. Thus, there exists the danger that items and people could fall through the plasterboard between the joists.GB 2 354 790US 5 197 251 discloses an insulation protection system having pairs of upright members.US 2008/134608 discloses a radiant heat barrier.EP 0 563 505 discloses a supporting framework for making suspended floors. - According to the invention, there is provided apparatus for providing a platform area in an attic having a plurality of generally parallel joists, the apparatus comprising: a plurality of legs, each leg having a first end and a second end, and having a joist mounting at the first end comprising a pair of jaws configured to engage only one joist and a platform support at, or in the region of, the second, opposite end, the platform support at the second end comprising two upstanding substantially parallel walls; and a plurality of boards for being supported by the platform supports of at least two of the plurality of legs, each board comprising a groove in its lower surface for receiving one of the upstanding walls, the apparatus being arranged, in use, to provide a raised platform over adjacent joists with boards mounted on legs connected to different joists.
- The apparatus may further comprise a plurality of longitudinal arms, wherein each leg further comprises an arm mounting arranged such that an arm can be connected to extend between two or more legs on respective joists.
- The arm mounting can be adjacent the level of the platform support in order that the arm may provide underlying support to an overlying board across the inter-joist space.
- The arm mounting may comprise an aperture, recess or niche and the arm may have sufficient length to span two or more inter-joists spaces by means of passing through the aperture, recess or niche of an intermediate leg.
- The arm mounting of each leg can be arranged such that the connected arm extends substantially transverse to the direction of the joists.
- The walls may extend transverse to the direction of the jaws through which the joists will run in use.
- Each leg may further comprise a spar mounting arranged generally parallel to the direction of the joists, and into which a longitudinal spar can be connected to provide additional underlying support to an overlying board or boards.
- The joist mounting of each leg may comprise a pair of resilient jaws. The jaws can be provided by upwardly projecting tabs within a U-shaped clamp. The joist mounting can further comprise means for screwing or bolting the joist mounting to a joist. The joist mounting and platform support may be provided as separate components separated by a longitudinal post, for example a wooden, plastics or metal post. In the case of a plastics or metal post, its cross section could be circular or, as is the preferred case here, generally rectangular with concave sides.
- The joist mounting portion may be a U-shaped channel extending generally transverse to the orientation of the tongue and groove arrangement.
- The invention will now be described, by way of example, with reference to the accompanying drawings in which:
-
Figure 1 is a perspective diagram of an attic space with insulation laid between parallel joists; -
Figure 2 is a perspective diagram of a leg component in accordance with the invention; -
Figure 3 is a board component in accordance with the invention; -
Figures 4-9 are perspective diagrams of an attic space with guidelines for installing apparatus according to the invention; -
Figure 10 is a perspective diagram of the underside of an installed apparatus according to the invention; -
Figure 11 is an enlarged perspective diagram of the leg component ofFigure 2 , with typical dimensions shown; -
Figure 12 is an exploded perspective view of a raised platform system in accordance with a second embodiment of the invention: -
Figure 13 shows different views of a leg component in accordance with the second embodiment; -
Figure 14 is a side view of a joist mount part of the leg component inFigure 13 ; -
Figure 15 shows different views of the joist mount part ofFigure 14 ; -
Figure 16 shows different views of a platform mount part used in the second embodiment; -
Figure 17 shows perspective and sectional views of a post part of the leg component shown inFigure 13 ; -
Figure 18 shows perspective and sectional views of a transverse arm part forming part of the second embodiment; -
Figure 19 is a partial perspective drawing showing how various components forming the second embodiment are connected together; -
Figure 20 shows different views of a constructed raised platform system according to the second embodiment. -
Figure 21 shows a perspective view of a leg employed in a third embodiment; -
Figure 22 shows a perspective view, from underneath, of the leg shown inFigure 21 ; and -
Figures 23-26 are perspective diagrams of an attic space with guidelines for installing apparatus based on a third embodiment not within the scope of the appended claims. - A first embodiment of the invention will be described with reference to
Figures 2 to 11 . In this first embodiment, a raised platform for covering an additional layer of insulating material is constructed using a plurality of components made up of two types, namely aleg 8 and arectangular board 20. - Referring to
Figure 2 , theleg 8 comprises anelongate plastics member 10 having, at a lower end, ajoist mount 12 and at the other, upper end, aplatform mount 14. Theleg 8 is formed as a single piece of material, although it could be made of separate parts if required. - The
joist mount 12 has a fork-like shape in order to fit either side of an underlying joist of rectangular cross-section. Given the standardised dimensions of joists, it is straightforward to produce a mount whose inner recess will closely confirm with the joist width, thereby providing a secure fit when the fork is placed over the joist. A pair ofopposed tabs 13 extending from the top of themount 12 in a direction generally parallel to the joist axis X-X have respective holes provided for screwing or bolting theleg 8 to the joist for added stability. - The
platform mount 14 comprises threeparallel walls support surfaces 15 either side of thecentral wall 16. Thecentral wall 16 is slightly taller than theouter walls 17. Thewalls support surfaces 15 extend along an axis Y-Y substantially transverse to the joist axis X-X. - Referring to
Figure 3 , eachrectangular board 20 is made of wood or wood-derived material such as plywood. Eachboard 20 is pre-cut to a standard size and, along both lengthwise edges, spaced inwards by a distance approximately equal to the width of one of thesupport surfaces 15, is alongitudinal groove 21. The width and depth of eachgroove 21 is substantially the same as the corresponding dimensions of one of theouter walls 17, enabling a tongue-and-groove (or, alternatively, a mortise) joint to be made when placing aboard 20 onto theplatform mount 14 of aleg 8. Optionally, adhesive can be pre-applied but this is by no means necessary. - Referring to
Figure 4 , in order to construct the raised support surface, one first sets outguidelines 23 based on the width of the insulation material to be rolled out. In this case, 400 mm centres are marked out. Referring toFigure 5 , first and second lines of, in this case, fourlegs 8 are attached torespective joists 4 adjacent one another. Thelegs 8 on eachjoist 4 are of course separated by theguidelines 23. Given the relative orientations of the joist and platform mounts 12, 14, the resulting support surfaces 15 extend generally transverse to the joist axes. - Referring to
Figure 6 , the insulating material is rolled between the adjacent lines oflegs 8, the upper surface being tucked beneath the platform mounts 14. Next, as shown inFigure 7 , a firstrectangular board 20 is mounted onto eightunderlying legs 8, specifically by locating thepre-cut grooves 21 over the tongues provided by the innermostouter walls 17 of each leg. As indicated in that Figure,inner wall 16 terminates substantially level with the upper surface of theboard 20; the presence of the inner wall between adjacent boards minimises lateral movement but there should be no (or minimal) protrusion to avoid creating a trip hazard. - Referring to
Figure 8 , a further row of fourlegs 8 is then fitted using the nextadjacent guideline 23 and the process is repeated so that anotherboard 20 can be fitted, as shown inFigure 9. Figure 10 shows the cavity that remains under the raisedboards 20 connected in the manner described (for clarity, no insulating material is shown) and, in particular, it can be clearly seen how theouter walls 17 locate within thegrooves 21 running transverse to thejoists 4. -
Figure 11 is a close-up view of theaforementioned leg 8 with dimensions shown for further information. - The resulting structure enables a raised platform or decking to be fitted (either on a 'new build' project or as a retrofit system) relatively easily and cost-effectively using just two types of component. The structure enables the laying of at least two layers of insulating material whilst maintaining a storage or walking platform in spite of the joists being hidden.
A second embodiment will now be described with reference toFigures 12 to 20 . - Referring to
Figure 12 , the second embodiment comprises a set oflegs 33 andboards 35 provided together with further components in the form oftransverse arms 37 and, optionally, spars 39. When constructed in the manner to be described, this raisedplatform system 30 provides a framework or lattice structure, as generally depicted in exploded form in the Figure. - Each component will now be described in detail.
- Referring to
Figure 13 (a)-(c) , eachleg 33 comprises an elongate structure made of three separable parts. The major part is an elongatehollow post 41 made of plastics material of square/rectangular cross section. Attached to the top of thepost 41 is a plastics support cap 45 (hereafter simply "cap") and, attached to the bottom is ajoist mount 43. - Briefly, it will be seen from this Figure that the
cap 45 includes a V-shapedgroove 47 recessed into its upper surface, below its upper support level, and which passes from one side to the other, including through opposed lateral faces of the cap. On the transverse faces are provided a pair of opposed pegs 51. - Referring to
Figure 14 , a more detailed view of thejoist mount 43 is shown. Themount 43 comprises a plastics component comprising ahollow base 61 of square/rectangular form defining a recessed interior 62 whose outer walls conform to and engage with the outer wall of thepost 41. Extending below thebase 61 is a pair oflateral arms 55, tapering slightly inwards. From the end of eacharm 55, extending upwards back towards thebase 61, is aresilient plastics tab 57, both tabs providing a pair of jaws which, in use, engage and grip theunderlying joist 4. As shown in the schematics depicted above the main diagram, thejaws 57 allow themount 43 to fit over (the lateral sides of)joists 4 of varying widths whilst remaining stable. - Referring to
Figure 15 , thejoist mount 43 also includes a cantileveredplate 53, extending from one side thereof in alignment with thearms 55, that includes a pair of holes enabling the mount, when located over ajoist 4, to be screwed to the joist to provide additional stability. One or more holes is/are suitable. - Referring to
Figure 16 , as indicated above, thecap 45 is moulded to provide a particular predefined shape enabling thearm components cap 45 comprises ahorizontal platform 48 having the V-shapedgroove 47 recessed within it extending from one side to the other. A pair of retainingtabs 50 extend partly over thegroove 47 in the central region of theplatform 48. A pair ofparallel walls 49 extend upwards from theplatform 48, the purpose of each being to engage the underside groove of aboard 35, in much the same way as theouter walls 17 of the first embodiment. - On the other, transverse sides of the
cap 45, the pair ofopposed pegs 51 protrude from the cap surface. The profile of each peg 51 is approximately triangular. - Returning to
Figure 13 , it will be seen that themount 43 andcap 45 are arranged, in use, to be connected to thepost 41 in a particular orientation relative to one another; thegroove 47 is arranged to run along an axis transverse to that of the groove betweenjaws joists 4. - Referring to
Figure 17 , thepost 41 is shown in perspective and sectional views. -
Figure 18 shows perspective and sectional views of one of thetransverse arms 37; it will be seen that eacharm 37 has an arrow-like cross-section with an upwardly projectingwall 71 and a lowertriangular part 73. Thetriangular part 73 is shaped so as to conform with thegroove shape 47 in thecap 45, thewall 73 being narrow enough to pass betweentabs 50 and projecting proud of theplatform 48. - Referring to
Figure 19 , thecap 45 enables one ormore arms groove 47 or to one of thepegs 51 in order to provide additional support beneath theboards 35. Atransverse arm 37 will provide, as the name suggests, support in the direction generally transverse to thejoists 4. Thespars 39, on the other hand, run generally parallel to thejoists 4. - Although not shown in detail in the Figures, the
spars 39 have either the same, or a similar cross-section, to that of thetransverse arms 37 such that the ends can connect to thepegs 51. Both types can be made out of a plastics or metal material, for example steel or aluminium. As indicated inFigure 12 , the length of the eachtransverse arm 37 is greater than the width betweenadjacent joists 4; in fact each arm preferably extends from a first joist to a third joist via an intermediate joist, as enabled by the V-shapedgroove 47 in eachcap 45. Thespars 39, which are considered optional, need not be as long as thetransverse arms 37. Their role is to add extra support underneath the boards, in addition to thetransverse arms 37, in the orthogonal direction. - The generally orthogonal arrangement of
legs 33 andarms rectangular boards 35 are to be used, this arrangement is the preferred choice. - By making the spars 39 a predetermined length, they can be used to assist spacing apart the
legs 33 on eachjoist 4. The fitter need only mark out a first row oflegs 33, and then use thespars 39 extending parallel over thejoists 4 to indicate where the next row of legs should be fitted. - In order to construct the raised support surface, generally depicted in
Figure 20 , one first sets outguidelines 23 based on the width of the insulation material to be rolled out. In this case, 400 mm centres are marked out. Referring toFigure 5 , first and second lines of, in this case, fourlegs 8 are attached torespective joists 4 adjacent one another. Thelegs 8 on eachjoist 4 are of course separated by theguidelines 23. Given the relative orientations of the joist and platform mounts 12, 14, the resulting support surfaces 15 extend generally transverse to the joist axes. - An additional fixing or clip may be provided to enable the boards to be secured to the
transverse arms 37. This may comprise providing a groove or continuous slot in eachtransverse arm 37 and a metal clip that would be pushed down vertically between the boards to engage into the slot. The metal clip could, for example, be T-shaped. - Further, an interconnecting arm may be provided to join together axially aligned
transverse arms 37. This interconnection may comprise a plug or tube that, for example, could push into or over one end of eachadjacent arm 37. This may be important since the spacing between joists cannot be predicted and so it is not always the case that thetransverse arms 37 will meet directly over aleg 33. - Referring to
Figure 21 to 26 , a third embodiment outside the scope of the appended claims, now be described. This embodiment is similar to the first in that it does not require the use of transverse arms or spars; it offers further advantages in that it does not require the legs to be accurately spaced apart in order to fix the boards over theparallel walls 39, as is the case in the second embodiment.
Figures 21 and 22 shows aleg 80 for use in this third embodiment. Theleg 80 is an elongate plastics member or post 83 having, at a lower end, ajoist mount 81 and at the other, upper end, aplatform mount 82.
Thejoist mount 81 comprises an adjustable bracket made up of an integral L-shapedmember 84 which has a pair ofinner channels 86 and a separate, slidable L-shapedmember 87 the edges of which engage within the channels to allow adjustment of the mounting channel defined between jaws of the opposed L-shaped members. Each of the L-shapedmembers type surface 87 which together allow the L-shaped members to be fixed relative to each other; relative adjustment is achieved by applying an external force to one or both of the members to overcome the inherent resistance of the opposing sawtooth surfaces. - The
platform mount 82 comprises a firsthorizontal surface 88, from which projects aninverted L bracket 89, approximately half-way along. On the opposite side of the L-shapedbracket 89 is a secondhorizontal surface 90. - Referring now to
Figures 23 to 26 , theleg 80 is preferably used withboards 92 that differ from those described previously in that, rather than having a longitudinal slot, they havelongitudinal grooves 94 formed along the lateral sides. - In order to fit the
boards 92 to the legs, one first follows the procedure described with reference toFigures 4 to 6 above, although using thenew legs 80. Referring back toFigures 23 to 26 , aboard 92 is laid by inserting one lateral edge under theinverted L bracket 89 of each spaced apartleg 80 on the first row of joists, so that the bracket part extends into thegroove 94. The opposite edge is then lowered onto the firsthorizontal surface 88 of eachleg 80 in the next row. Theboard 92 is then screwed vertically to thelegs 80 on the left hand side and horizontally to the legs on the right hand side, using the holes provided. -
Figures 25 and 26 show thenext board 92 being laid and the resulting surface. - A common feature of each embodiments is that they do not require there to be a fixed and predetermined distance between
adjacent joists 4, which in practice will vary. Joists are commonly spaced on 400mm, 500mm or 600mm centres and, even then, there will be small variations either side of the stated figure. In a system where the boards are required to lie directly over two adjacent joists, a range of different board widths would have to be made available to ensure the lateral edges are supported. The above three embodiments, however, promote the use of boards which lie transverse to the direction of the joists, and whose length is such as to span two or more joists. The upper support surfaces of each leg engage or support the boards using at least a groove arrangement aligned or extending generally transverse to the direction of the joists, thereby defining the laying direction and allowing adjustment of a board's position along this transverse direction. There is no requirement for a board to be of a particular width or length and the system is totally flexible. The first and second embodiments use a tongue (two upstanding from the support surface) and groove (two in each board) arrangement; the third embodiment employs a tongue portion formed along the lengthwise edge of each board arranged to engage within the channel defined by the L-shapedbracket 89.
Claims (11)
- Apparatus for providing a platform area in an attic having a plurality of generally parallel joists (4), the apparatus comprising:a plurality of legs (8), each leg having a first end and a second end, and having a joist mounting (12) at the first end comprising a pair of jaws configured to engage only one joist and a platform support (14) at, or in the region of, the second, opposite end, the platform support at the second end comprising two upstanding substantially parallel walls (17) and:a plurality of boards (20) for being supported by the platform supports of at least two of the plurality of legs, each board comprising a groove (21) in its lower surface for receiving one of the upstanding walls (17),the apparatus being arranged, in use, to provide a raised platform over adjacent joists with boards mounted on legs connected to different joists.
- Apparatus according to any preceding claim, further comprising a plurality of longitudinal arms (37), wherein each leg further comprises an arm mounting arranged such that an arm can be connected to extend between two or more legs on respective joists.
- Apparatus according to claim 2, wherein the arm mounting is adjacent the level of the platform support (14) in order that the arm may provide underlying support to an overlying board across the inter-joist space.
- Apparatus according to claim 2 or claim 3, wherein the arm mounting comprises an aperture, recess or niche and the arm has sufficient length to span two or more inter-joists spaces by means of passing through the aperture, recess or niche of an intermediate leg.
- Apparatus according to any one of claims 2 to 4, wherein the arm mounting of each leg is arranged such that the connected arm extends substantially transverse to the direction of the joists.
- Apparatus according to any preceding claim, wherein the upstanding walls (17) extend along the second end in a direction transverse to the direction of the jaws on the first end through which joists will run in use.
- Apparatus according to any preceding claim, wherein each leg further comprises a spar mounting arranged generally parallel to the direction of the joists, and into which a longitudinal spar (39) can be connected to provide additional underlying support to an overlying board or boards.
- Apparatus according to any preceding claim, wherein the joist mounting of each leg comprises a pair of resilient jaws.
- Apparatus according to claim 9, wherein the jaws are provided by upwardly projecting tabs within a U-shaped clamp.
- Apparatus according to claim 9 or claim 10, wherein the joist mounting further comprising means for additionally screwing or bolting the joist mounting to a joist.
- Apparatus according to any preceding claim, wherein the joist mounting and platform support are provided as separate components separated by a longitudinal post (41).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB1008493.7A GB201008493D0 (en) | 2010-05-21 | 2010-05-21 | Attic platform |
GB1014237.0A GB2480506B (en) | 2010-05-21 | 2010-08-26 | Attic platform. |
US13/004,194 US8769899B2 (en) | 2010-05-21 | 2011-01-11 | Attic platform |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2388384A2 EP2388384A2 (en) | 2011-11-23 |
EP2388384A3 EP2388384A3 (en) | 2014-10-15 |
EP2388384B1 true EP2388384B1 (en) | 2018-03-21 |
Family
ID=44318462
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11004099.5A Not-in-force EP2388384B1 (en) | 2010-05-21 | 2011-05-18 | Attic platform |
Country Status (1)
Country | Link |
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EP (1) | EP2388384B1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2947236A1 (en) | 2014-05-22 | 2015-11-25 | CertainTeed Corporation | System, method and apparatus for attic rafter extension for storage |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5197251A (en) * | 1989-01-09 | 1993-03-30 | Krysak Jerry J | Insulation protection system |
NL9101652A (en) * | 1991-09-30 | 1993-04-16 | Damtrade B V | Flooring system with tiles |
IT226426Z2 (en) * | 1992-04-01 | 1997-06-16 | Plotini Allestimenti | SUPPORT STRUCTURE, FOR THE EXECUTION OF SUSPENDED FLOORS, SIMILAR SCAFFOLDS |
GB2354790B (en) * | 1999-08-28 | 2004-02-11 | Neil Ernest Allen | A support for a scaffolding platform |
US20070028550A1 (en) * | 2005-07-20 | 2007-02-08 | Clapper Edward O | Rafter platform |
GB2438620A (en) * | 2006-05-30 | 2007-12-05 | Nicholas Michael Milner | Insulated loft flooring component |
US7874114B2 (en) * | 2006-10-20 | 2011-01-25 | Snyder National Corporation | Radiant heat barrier |
-
2011
- 2011-05-18 EP EP11004099.5A patent/EP2388384B1/en not_active Not-in-force
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
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EP2388384A3 (en) | 2014-10-15 |
EP2388384A2 (en) | 2011-11-23 |
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