Classifications

• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
  • E04G5/00—Component parts or accessories for scaffolds
  • E04G5/08—Scaffold boards or planks
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
  • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
  • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
  • E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
  • E04C2/20—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of plastics
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
  • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
  • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
  • E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
  • E04C2/36—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by transversely-placed strip material, e.g. honeycomb panels
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
  • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
  • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
  • E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
  • E04C2/36—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by transversely-placed strip material, e.g. honeycomb panels
  • E04C2/365—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by transversely-placed strip material, e.g. honeycomb panels by honeycomb structures
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
  • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
  • E04C2/54—Slab-like translucent elements
  • E04C2/543—Hollow multi-walled panels with integrated webs
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
  • E04G1/00—Scaffolds primarily resting on the ground
  • E04G1/15—Scaffolds primarily resting on the ground essentially comprising special means for supporting or forming platforms; Platforms
  • E04G1/153—Platforms made of plastics, with or without reinforcement

Definitions

• the present invention relates to a scaffold board.
• Scaffolding typically involves the temporary construction of a rectilinear framework of vertical standards, horizontal ledgers and horizontal transoms.
• the standards, ledgers and transoms are typically steel tubes which are interconnected by clamps.
• Scaffold boards are laid across the transoms in order to provide elevated working platforms. Scaffold boards are usually manufactured from solid wood or laminated veneer lumber (LVL).
• United States Patent Publication No. US 2013/0192927 discloses an alternative scaffold board manufactured from poly vinyl chloride (PVC).
• PVC poly vinyl chloride
• the disclosed board overcomes some of the above mentioned disadvantages (e.g. they are non- perishable, UV light resistant and recyclable). However, they have the significant disadvantage of high deflection under load. As such they do not meet a variety of international and Australian Standards, particularly the deflection test for scaffold boards, which (in Australia and New Zealand) requires deflection of less than 10mm over a lm span responsive to a working load limit (e.g. 210kg) applied centrally. As a result, this product cannot be used in Australia, nor the USA, UK or Canada (which have similar standards) and many other significant building markets.
• a working load limit e.g. 210kg
• FRP fibre reinforced plastic
• a further known alternative scaffold board has been manufactured from polypropylene. It also does also not pass Australian standards. The board is black and becomes significantly more flexible in sunlight. It is also able to ignite and transfer a flame.
• the present invention provides a scaffold board of extruded thermoplastic material, the board including:
• a substantially rectangular outer profile defined by a top wall, a bottom wall and a pair of side walls;
• each of the strengtheners have:
• a middle part oriented normally to the plane of the top wall and the bottom wall; a pair of top parts, each extending outwardly from a top of the middle part to the inner surface of the top wall in substantially equal and opposite directions respectively;
• the top wall, the bottom wall, the side walls and the strengtheners preferably extend longitudinally along a length of the scaffold board. [001 1]
• the top wall, the bottom wall, the side walls and the strengtheners are preferably integrally formed.
• each strengthener preferably defines a triangular longitudinal recess with the adjacent inner surface of the top wall.
• the pair of bottom parts of each strengthener preferably defines a triangular longitudinal recess with the adjacent inner surface of the bottom wall.
• a hexagonal longitudinal recess is preferably defined between adjacent said strengtheners.
• an octagonal longitudinal recess is preferably defined between adjacent said strengtheners.
• the top wall, the bottom wall and the side walls are preferably thicker than the middle parts, the top parts and the bottom parts.
• top wall and the bottom wall preferably include textured non-slip outer surfaces
• the board is preferably extruded from PCV, most preferably type k62 or k66.
• the present invention provides a scaffold board of extruded thermoplastic material, the board including:
• a substantially rectangular outer profile defined by a top wall, a bottom wall and a pair of side walls;
• top trian gular hollow recesses extending longitudinally through the board, each having one side parallel to the plane of the top wall;
• the plurality of hollow recesses extending longitudinally through the board between adjacent opposed pairs of top triangular recesses and bottom triangular recesses are hexagonal. In another form, the plurality of hollow recesses extending longitudinally through the board between adjacent opposed pairs of top triangular recesses and bottom triangular recesses are octagonal.
• the top wall, the bottom wall, the side walls are preferably integrally formed with the top triangular recesses, the bottom triangular recesses and the hexagonal/octagonal recesses.
• top wall and the bottom wall preferably include textured or non-slip outer surfaces
• the board is preferably extruded from PCV, most preferably type k62 or k66.
• the present invention provides a scaffold board of extruded
• thermoplastic material including:
• a substantially rectangular outer profile defined by a top wall, a bottom wall and a pair of side walls;
• an internal honeycomb strengthening structure within the top wall, the bottom wall and the pair of side walls, defined by a row of longitudinally extending cells, each of the cells defined by a 6 or 8 sided polygon with its longest dimension oriented normally to the plane of the top wall and the bottom wall.
• the polygon is a hexagon. In another fonn, the polygon is an octagon.
• the top wall, the bottom wall, the side walls and the strengtheners preferably extend longitudinally along a length of the scaffold board.
• the top wall, the bottom wall, the side walls and the honeycomb strengthening structure are preferably integrally formed.
• the top wall, the bottom wall and the side walls are preferably thicker than the walls of the honeycomb strengthening structure.
• the top wall and the bottom wall preferably include textured non-slip outer surfaces
• the board is preferably extruded from PCV, most preferably type k62 or k66.
• Fig. 1 is a perspective view of an embodiment of scaffold board
• Fig. 2 is an enlarged cross sectional end view of the scaffold board shown in Fig. 1 ;
• FIG. 3 is an enlarged partial detail view of the scaffold board shown in Fig. 2;
• Fig. 4 is an enlarged cross sectional end view of a second embodiment of scaffold board.
• Figs. 1 to 3 show a first embodiment of a scaffold board 10 produced by extrusion from poly vinyl chloride (PVC) thermo plastic material.
• PVC poly vinyl chloride
• k62 or k66 is used, with the following formula per Hundred Parts PVC resin:
• the board 10 is produced in dimensions matching those of existing wood boards in order to suit existing scaffolding equipment.
• the board 10 is 230 mm wide, 39 mm thick (including the hot rolled grip discussed below) and produced in 2400 mm and 3600 mm lengths.
• the board has a substantially rectangular outer profile defined by a top wall 12, a bottom wall 14 and pair of side wall 16 and 18.
• the walls 12, 14, 16 and 18 are all approximately 4 mm thick.
• the interior of the board 10 is substantially hollow aside from a plurality of strengtheners, indicated generally by the reference numeral 20, which each extend between an inner surface of the top wall 12 and an inner surface of th e bottom wall 14.
• the strengtheners 20 each have a pair of top parts 20a and 20b, a middle part 20c and a pair of bottom parts 20d and 20e, which are all about 3 mm thick.
• the top parts 20a and 20b each extend the outwardly from the top of the middle part 20c to the inner surface of the top wall 12 in substantially equal and opposite directions respectively.
• the bottom parts 20d and 20e each extend outwardly from the bottom of the middle part 20c to the inner surface of the bottom wall 14 in substantially equal and opposite directions respectively.
• the pairs of top parts 20a and 20b each define a triangular longitudinal recess 22 with the adjacent inner surface of the top wall 12.
• the pairs of bottom parts 20d and 20e each define a triangular longitudinal recess 24 with the adjacent inner surface of the bottom wall 14.
• Hexagonal longitudinal recesses 26 are defined between adjacent strengtheners.
• the top wall 12, the bottom 14, the side walls 16 and 18 and the strengtheners 20 all extend longitudinally along the entire length of the board 10.
• the top wall 12, the bottom wall 14, the side walls 16 and 18, and the strengtheners 20 are also integrally formed.
• the outer surfaces of the top and bottom walls 12 and 14 include a number of longitudinal (anti-slip) ridges 28 formed thereon, to enhance grip.
• the ridges 28 are formed using through the use of a textured hot roller.
• Another way to describe the internal strengtheners 20 is that they together form an internal honeycomb strengthening structure defined by a row of longitudinally extending cells 30.
• Each of the cells 30 is defined by a hexagon with its longest dimension orientated normally to the plane of the top and bottom walls 12 and 14.
• Fig. 4 shows a second embodiment of scaffold board 10'.
• the board 10' is similar to that previously described and like reference numerals are sued to denote like features.
• the strengtheners 20 are slightly more widely spaced, resulting in octagonal recesses 26' therebetween.
• the boards 10/10' are also lighter than the known boards previously discussed with the 2400 mm and 3600 mm length boards weighing 10.8kg and 16.2kg respectively.
• This weight reduction provides several advantages. Firstly, it reduces the material required to produce the board, which saves production and manufacturing cost. Transport and manual handling costs are also reduced.
• the board 10 is light enough to be able to be passed by hand between levels during erection or dismantling of a scaffold structure, as opposed to being carried between scaffold levels up stairs and/or ladders, which greatly reduces the time of both of those tasks.
• the boards 10/10' also maintains the other advantages associated with thermo plastic construction over wooden/LVL boards including being: non-perishable; highly resistant to UV; self-extinguishing for flame; highly impact resistant; highly corrosion resistant; not allowing for transfer of radioactive particles; not contaminable by range of chemicals including asbestos; not allowing propagation of mould spores and bacteria; not allowing for infestation by insects;

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• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Mechanical Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Wood Science & Technology (AREA)
• Panels For Use In Building Construction (AREA)
• Laminated Bodies (AREA)
• Floor Finish (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=59850062

Family Applications (1)

Country Status (7)

Families Citing this family (2)

Family Cites Families (21)

• 2017
  • 2017-02-23 CN CN201780015651.XA patent/CN109072619A/zh active Pending
  • 2017-02-23 CA CA3016267A patent/CA3016267A1/en not_active Abandoned
  • 2017-02-23 EP EP17765558.6A patent/EP3430215A4/de not_active Withdrawn
  • 2017-02-23 WO PCT/AU2017/000053 patent/WO2017156566A1/en active Application Filing
  • 2017-02-23 US US16/085,331 patent/US20190071883A1/en not_active Abandoned
  • 2017-02-23 JP JP2018545314A patent/JP2019512620A/ja active Pending
  • 2017-02-23 AU AU2017234367A patent/AU2017234367B2/en active Active

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