IL293731A - Grave structure and assembly method - Google Patents

Description

GRAVE STRUCTURE AND ASSEMBLY METHOD TECHNOLOGICAL FIELD id="p-1" id="p-1" id="p-1" id="p-1" id="p-1" id="p-1" id="p-1" id="p-1"

[001] The present presently disclosed subject matter is in the field of burial construction, in particular a grave structure.

BACKGROUND id="p-2" id="p-2" id="p-2" id="p-2" id="p-2" id="p-2" id="p-2" id="p-2"

[002] Cement grave structures are heavy and expensive to transport, offload and install. For this reason, light-weight, pre-construction grave structure portions, for example of coated foamed polystyrene are sometimes used to form grave structures. id="p-3" id="p-3" id="p-3" id="p-3" id="p-3" id="p-3" id="p-3" id="p-3"

[003] IL 253936 discloses one example of a lightweight burial construction or grave structure. The grave structure is made of polystyrene foam that is cut into shapes using filament cutting and can be coated with cement. The grave walls have corner recesses and are arranged to produce the grave structure. A matrix or array of adjacent graves may be arranged to form a burial system, including a multi-story system. id="p-4" id="p-4" id="p-4" id="p-4" id="p-4" id="p-4" id="p-4" id="p-4"

[004] JP 2005/163333 discloses a grave foundation body made of an expanded polystyrene. A ridge is provided around the periphery of the top surface of the grave walls for use as a tombstone installation surface. id="p-5" id="p-5" id="p-5" id="p-5" id="p-5" id="p-5" id="p-5" id="p-5"

[005] Polybet Boards Ltd published a catalogue illustrating various grave structures (http://polybet.co.il/prospect/11) having walls made of foamed polystyrene, to reduce the weight.

GENERAL DESCRIPTION id="p-6" id="p-6" id="p-6" id="p-6" id="p-6" id="p-6" id="p-6" id="p-6"

[006] The present presently disclosed subject matter relates to a grave structure configured for easy transportation to a cemetery and installation. id="p-7" id="p-7" id="p-7" id="p-7" id="p-7" id="p-7" id="p-7" id="p-7"

[007] According to one aspect of the present presently disclosed subject matter there is provided a grave structure as defined in the claims. id="p-8" id="p-8" id="p-8" id="p-8" id="p-8" id="p-8" id="p-8" id="p-8"

[008] According to another aspect of the present presently disclosed subject matter there is provided a method of assembling a grave structure as defined in the claims. id="p-9" id="p-9" id="p-9" id="p-9" id="p-9" id="p-9" id="p-9" id="p-9"

[009] It is a particular feature of the disclosed subject matter that (a) the grave structure is configured so that when hollow/inner portions of the walls are filled with a filler, such as sand, the filler is greater than 80 vol% and typically between 80-90 vol% of the resultant sand-filled wall; (b) wall panels are 1-2 cm thick, thereby kosher; and (c) panels include a support board (typically a foamed polymer such as polystyrene, so as to be light weight); a cementitious layer including cement, resin and additives; and a mesh (preferably fiberglass) – preferably the cementitious layer is 0.5-1.5mm thick – and preferably the portion of the cementitious layer that is coating the outer-facing side of the mesh protrudes outward more than the cementitious layer portion in the area between the fibers of the mesh.

BRIEF DESCRIPTION OF THE DRAWINGS id="p-10" id="p-10" id="p-10" id="p-10" id="p-10" id="p-10" id="p-10" id="p-10"

[010] The presently disclosed subject matter may be more clearly understood upon reading of the following detailed description of non-limiting exemplary embodiments thereof, with reference to the following drawings, in which: id="p-11" id="p-11" id="p-11" id="p-11" id="p-11" id="p-11" id="p-11" id="p-11"

[011] Fig. 1 is a perspective view of a grave structure in accordance with an example of the presently disclosed subject matter, with a filler within its walls. id="p-12" id="p-12" id="p-12" id="p-12" id="p-12" id="p-12" id="p-12" id="p-12"

[012] Fig. 2 is an exploded view of Fig. 1, without the filler. id="p-13" id="p-13" id="p-13" id="p-13" id="p-13" id="p-13" id="p-13" id="p-13"

[013] Fig. 3 is a perspective end view of the grave structure of Fig. 1. id="p-14" id="p-14" id="p-14" id="p-14" id="p-14" id="p-14" id="p-14" id="p-14"

[014] Fig. 4 is an exploded perspective view of an end wall of the grave structure in accordance with an example of the presently disclosed subject matter. id="p-15" id="p-15" id="p-15" id="p-15" id="p-15" id="p-15" id="p-15" id="p-15"

[015] Fig. 5 is a perspective cut-away view of the end wall of the grave structure, with filler, in accordance with an example of the presently disclosed subject matter. id="p-16" id="p-16" id="p-16" id="p-16" id="p-16" id="p-16" id="p-16" id="p-16"

[016] Fig. 6 is an exploded perspective view of a side wall of the grave structure in accordance with an example of the presently disclosed subject matter. id="p-17" id="p-17" id="p-17" id="p-17" id="p-17" id="p-17" id="p-17" id="p-17"

[017] Fig. 7 is a perspective cut-away view of the side wall of the grave structure, with filler, in accordance with an example of the presently disclosed subject matter. id="p-18" id="p-18" id="p-18" id="p-18" id="p-18" id="p-18" id="p-18" id="p-18"

[018] Fig. 8 is an up-side-down view of Fig. 1. id="p-19" id="p-19" id="p-19" id="p-19" id="p-19" id="p-19" id="p-19" id="p-19"

[019] Fig. 9 is an exploded perspective view of a wall panel of the grave structure in accordance with an example of the presently disclosed subject matter. id="p-20" id="p-20" id="p-20" id="p-20" id="p-20" id="p-20" id="p-20" id="p-20"

[020] Figs 10-11 are perspective end views of the grave structure of Fig. 1, illustrating filler-support shelves. id="p-21" id="p-21" id="p-21" id="p-21" id="p-21" id="p-21" id="p-21" id="p-21"

[021] Figs. 12-13 are perspective views of a plurality of grave structures in a matrix layout or array, in accordance with the presently disclosed subject matter. id="p-22" id="p-22" id="p-22" id="p-22" id="p-22" id="p-22" id="p-22" id="p-22"

[022] Figs. 14A-14D are perspective views of another example of the presently disclosed grave structure, Fig. 14A and 14B showing assembled grave structures without filing and with filing; Figs. 14C and 14D showing a side wall thereof, Fig. 14D being an exploded view. id="p-23" id="p-23" id="p-23" id="p-23" id="p-23" id="p-23" id="p-23" id="p-23"

[023] Fig. 15 (two pages) shows load test results for three exemplary grave wall boards. id="p-24" id="p-24" id="p-24" id="p-24" id="p-24" id="p-24" id="p-24" id="p-24"

[024] Fig. 16 shows adhesive testing of for exemplary grave wall boards. id="p-25" id="p-25" id="p-25" id="p-25" id="p-25" id="p-25" id="p-25" id="p-25"

[025] The following detailed description of embodiments of the presently disclosed subject matter refers to the accompanying drawings referred to above. Dimensions of components and features shown in the figures are chosen for convenience or clarity of presentation and are not necessarily shown to scale. Wherever possible, the same reference numbers will be used throughout the drawings and the following description to refer to the same and like parts.

DETAILED DESCRIPTION OF EMBODIMENTS id="p-26" id="p-26" id="p-26" id="p-26" id="p-26" id="p-26" id="p-26" id="p-26"

[026] Illustrative examples of a grave structure according to the presently disclosed subject are described below. In the interest of simplicity, not all features/components of an actual implementation are necessarily described. id="p-27" id="p-27" id="p-27" id="p-27" id="p-27" id="p-27" id="p-27" id="p-27"

[027] Figs. 1-2 show a grave structure in accordance with an example of the presently disclosed subject matter including four walls, namely two side walls 20, two end walls 22. All of the walls 20, 22 have one or more hollow portions 24 ( Fig. 2 ) in which a filler 26 can be added (e.g. sand or a similar material). The grave structure is exemplified by a two-story grave structure, however a one-story or greater than two-story structure is possible within the scope of the present disclosure. id="p-28" id="p-28" id="p-28" id="p-28" id="p-28" id="p-28" id="p-28" id="p-28"

[028] Herein the specification and claims the term "filler" and derivatives thereof will denote any suitable filler material, including sand and the like, typically particles, powder or granular material, but can also be a sand cement mixture forming a concrete-like material. id="p-29" id="p-29" id="p-29" id="p-29" id="p-29" id="p-29" id="p-29" id="p-29"

[029] Fig. 3 shows Fig. 1 without one of the end walls 22 illustrating another perspective of the grave structure with filler 26 within walls 20,22. id="p-30" id="p-30" id="p-30" id="p-30" id="p-30" id="p-30" id="p-30" id="p-30"

[030] Fig. 4 shows an exploded view of end wall 22 having an inner panel and an outer panel 30 and two or more end wall spanning panels 34 (three illustrated). If there is an inboard/support spanning panel 35 (or more than one), that panel is typically recessed from the tops and bottoms of the inner and outer panels 28, 30 (as understood from Fig. 5 , which is missing inner panel 28, in order to illustrate the inside of end wall 22 with filler 26), so that filler 26 is contiguous within the end walls 22, for reasons explained below. End wall inner panel 28 and outer panel 30 include at least panel through-hole 32 whereby filler 26 is contiguous with the inside and outside of the grave structure, as understood from Fig. 8 . id="p-31" id="p-31" id="p-31" id="p-31" id="p-31" id="p-31" id="p-31" id="p-31"

[031] Fig. 6shows an exploded view of side wall 20 include a side wall inner panel unit 38 and outer panel unit 40, made up of a series of staggered indented strips 42 and non-indented strips 44. Staggered strips 42, 44 are connected by at least two intermediate side wall spanning panels 46 designed to correspondingly hold the staggered strips in their staggered positions, as illustrated. Specifically, side wall spanning panels 46 include sideward projecting portions 48 and recessed portions 50, whereby indented strips 42 are received in the recessed portions and non-indented strips 44 interface with projecting portions 48. Side wall inner panel unit 38 and outer panel unit 40 include passageways 52, which double as indentations for maneuvering by a forklift. id="p-32" id="p-32" id="p-32" id="p-32" id="p-32" id="p-32" id="p-32" id="p-32"

[032] Staggered strips 42,44 allow for slits 33 ( Fig. 2 ) to be formed at the upper edges and lower edges of adjacent staggered strips, which also provides a conduit for contiguous filler 26 contact, as the filler is exposed, i.e. not completely surrounded. id="p-33" id="p-33" id="p-33" id="p-33" id="p-33" id="p-33" id="p-33" id="p-33"

[033] Fig. 7 shows Fig. 6 without side wall inner panel unit 38, to illustrate filler 26 in side wall 20. Also illustrated is the option of side wall 20 including one or more side wall inboard/support spanning panels 47, which are typically recessed from the tops and bottoms of side wall inner and outer panel units 38,40 so that filler 26 is contiguous within the side walls 20, for reasons explained below. id="p-34" id="p-34" id="p-34" id="p-34" id="p-34" id="p-34" id="p-34" id="p-34"

[034] Fig. 8 shows an example of the grave structure of Fig. 1 , however in an upside-down design, where passageways 52 are at the top of the grave structure. id="p-35" id="p-35" id="p-35" id="p-35" id="p-35" id="p-35" id="p-35" id="p-35"

[035] With reference to Fig. 9 , it is a particular feature of examples of the present grave structure in which panels 28 and 30, and strips 42 and 44 (and potentially the other panels/supports described above) are made from a combination of support board 60 (e.g. foamed polystyrene) for example, 0.6-10cm thick; a cementitious layer 62 (e.g. 0.5-2mm thick), typically including resin and additives and coating both sides of cementitious layer 62; and a mesh 64 (e.g. made of fiberglass) embedded in the cementitious layer. This combination of materials provides for assembling walls 20,22 from particularly strong panels/strips 28,30,42,44 whereby an amount, in particular a significant amount, of filler/sand 26 can be filled in hollow portions 26 of the walls 20, 22 such that the grave is considered halakhically kosher, while maintaining structural integrity of the grave structure when filled with filler 26. id="p-36" id="p-36" id="p-36" id="p-36" id="p-36" id="p-36" id="p-36" id="p-36"

[036] Exemplary alternate materials usable for walls include cement, concrete, wood, non-cellular plastic, construction board; plaster board, and the like. id="p-37" id="p-37" id="p-37" id="p-37" id="p-37" id="p-37" id="p-37" id="p-37"

[037] Mesh 64 may be metallic, however, in such case the grave is not halachically kosher. Herein the specification and claims the term "cementitious", "cementitious layer" or "cement coating", and derivatives thereof, denote a layer composed mostly of cement including one or more resins and one or more additives. id="p-38" id="p-38" id="p-38" id="p-38" id="p-38" id="p-38" id="p-38" id="p-38"

[038] Mesh 64 is covered by cementitious layer 62 whereby the cementitious coating on the mesh protrudes outward. A preferred manner of assembling panels 28,30 and strips 42,44 is to first coat support board 60 (e.g. a foamed polystyrene) with cementitious material, to place mesh 64 on or into that cementitious coating, and then place another coating of cementitious material on top of the mesh. In some designs, support board 60 includes at least one aperture (three illustrated), which provide for connection of the cementitious material of cementitious layer 62 from either side of the board, to provide a halakhic religious aspect in that the cementitious material is considered to be like sand and thereby contributes to the contiguous connection of filler 26. 30 id="p-39" id="p-39" id="p-39" id="p-39" id="p-39" id="p-39" id="p-39" id="p-39"

[039] Figs. 10-11 show the grave site with shelves, and upper shelf and lower shelf 72 to provide support for filler/sand 26. The shelves 70,72 are typically formed by pieces, for example six pieces (two of the pieces being illustrated, and the shelves typically extend most or all of the distance between end walls 22). As noted, the grave structure examples depicted in the figures are two-story structures, and so there are two shelves - upper shelf 70 and lower shelf 72. The shelves 70,72 support filler/sand 26 to provide a filler separation between bodies, typically at least 40 cm of sand. id="p-40" id="p-40" id="p-40" id="p-40" id="p-40" id="p-40" id="p-40" id="p-40"

[040] Indented strips 42 and top shoulders 54 of spanning panel projecting portions 48 support shelves 70,72, which as noted above provide a surface for placing filler 26 (typically sand), for halakhically separating one body from another, in multi-storied grave structures. Fig. 11 shows sand 74 or the like on lower shelf 72, illustrating a sand base for placing the deceased thereon. id="p-41" id="p-41" id="p-41" id="p-41" id="p-41" id="p-41" id="p-41" id="p-41"

[041] It is also a particular feature of the grave structure that grave walls 20,22 are configured to allow filing with filler 26 in a contiguous manner/connection between adjacent grave structures in a matrix or checkerboard array (illustrated in Figs. 12-13 ). Such a contiguous connection of filler 26 can be achieved via through-holes 32 and/or passageways 52 and/or slits in respective walls 20, 22. Passageways 52 (or alternatively, through-holes 32) may be at various locations, for example, adjacent the bottom edge of side walls 20 ( Fig. 1 ) or adjacent the top edge of the side walls ( Fig. 8 ). As noted, inboard support panels 35,47 can be shorter than the other spanning support panels 34,46 of the walls, allowing a contiguous connection of filler/sand 26 throughout each of the walls. id="p-42" id="p-42" id="p-42" id="p-42" id="p-42" id="p-42" id="p-42" id="p-42"

[042] In some examples, the panels are no greater than 2 cm and preferably no greater than 1 cm, which can be halakhically significant whereby the walls/panels can be considered negligible or of no significance such that the grave structure is halakhically kosher. A separation between bodies of 25 cm on all the sides is critical for halakha, whereby the wall strength is important. id="p-43" id="p-43" id="p-43" id="p-43" id="p-43" id="p-43" id="p-43" id="p-43"

[043] Another particular feature of the present grave structure is embodied in the design of the panels/strips that provides for a grave structure whose walls 20,22 can hold a relatively significant amount of sand or other filler, which can be heavy and provide a significant force on the wall panels, such that the high strength of the walls/panels is critical. id="p-44" id="p-44" id="p-44" id="p-44" id="p-44" id="p-44" id="p-44" id="p-44"

[044] Walls 20,22 are designed and assembled, as described above, whereby filler 26 can be a constructive (structural) and integral part of the strength of the wall/panel. As understood from above, this feature is critical in rendering the structure halakhically kosher. In addition, the fact that most of the wall is fillable with sand 26, provides a significant saving in raw material costs compared to traditional walls made of concrete or other materials, e.g. foamed polystyrene. id="p-45" id="p-45" id="p-45" id="p-45" id="p-45" id="p-45" id="p-45" id="p-45"

[045] Figs. 12and 13 show a plurality of graves structures arranged in an array. Fig. 12 illustrates that four peripheral graves 80 can be arranged at a "north", "south", "east", "west" orientation so that their outer walls form an additional grave structure 82 in between those four graves. Such a grave structure and arrangement saves a considerable amount of material cost as well as assembly time. Fig. 13 illustrates the grave site array with additional outer walls added to complete a rectangular array, thereby providing for efficient use of the burial site. id="p-46" id="p-46" id="p-46" id="p-46" id="p-46" id="p-46" id="p-46" id="p-46"

[046] Figs. 14A-14D are perspective views of another example of the presently disclosed grave structure. In contrast to above, the grave structure is a one-story structure, rather than a multi-story structure; and has an alternative end portion design of side walls 20, where the side walls extend to be flush with outer panel 30 of end walls 22. In further contrast to the above-described grave structure example, the outer side wall 40 is composed of a one-piece outer panel unit 40a (i.e. not staggered wall-panel strips 42, 44) where transverse side wall spanning panels 46 include rectangular transverse side wall spanning end panels 46a and transverse side wall spanning inboard panels 47a, cut to the required/corresponding shape (transverse side wall spanning inboard panels 47a have only one sideward projecting portion 48 and one shoulder 54). 30 id="p-47" id="p-47" id="p-47" id="p-47" id="p-47" id="p-47" id="p-47" id="p-47"

[047] Assembly method: Panels 28,30; staggered strips 42,44; end wall spanning panels 34 (and inboard/support spanning panel 35, if any); and intermediate side wall spanning panels 46 (and side wall inboard/support spanning panels 47, if any) are cut to the required shape. This cutting may be performed at the site, or prior. The aforementioned components are then glued together at their corresponding interfacing edges/surfaces - to connect them together, as understood from the above-described with reference to the figures. Fasteners such as bolts, screws and nails (not shown), may be inserted to strengthen the connections . After placing the resultant grave structure is thusly formed, filler 26 is added to voids in the grave structure. This last step is required if the grave structure is to be halakhically kosher, otherwise it is not necessary or the filler may be a material other than sand or dirt or such halakhically kosher material. id="p-48" id="p-48" id="p-48" id="p-48" id="p-48" id="p-48" id="p-48" id="p-48"

[048] Where filler 26 is sand (or the equivalent, hereinafter "sand"), the resultant grave structure is a halakhic breakthrough that makes the product "Mehadrin" kosher. Due to the fact that the vast majority of the wall is sand, halakhically it is considered that the deceased lies surrounded by sand only. id="p-49" id="p-49" id="p-49" id="p-49" id="p-49" id="p-49" id="p-49" id="p-49"

[049] To date, halakhic graves have been essentially made of sand/earth only surrounding the deceased and prior graves with man-made walls leave a space between panels that can be filled with sand; or the grave is produced via walls of two adjacent burial element . In other words, until now, there has been no situation where the grave wall sides are significantly filled with sand, and moreover in an absolute amount and contiguously, which halakhically cancels out the other materials (foamed polystyrene, fiberglass mesh and cementitious material) . id="p-50" id="p-50" id="p-50" id="p-50" id="p-50" id="p-50" id="p-50" id="p-50"

[050] As noted, the grave structure can be delivered to a grave site fully formed or in parts and assembled in place . In either case, it is preferable that sand or other filler 26 is placed in the walls at the grave site. As understood, non-sand fillers can be used. For example sand mixed with cement, which in combination with ambient moisture causes the mixture to becomes a concrete-like (i.e. a generally non-flowing) material . Due to the construction of the components ( Fig.

Claims (28)

1. A grave structure comprising: two side walls 20; and two end walls 22, wherein (a) the side walls 20 comprise at least one pair of strips 42,44 comprising an indented strip 42 and a non-indented strip 44; and at least two intermediate side wall spanning panels 46; (b) each of the end walls 22 comprises an inner panel 28, an outer panel 30, and a pair of end wall spanning panels 34; (c) the walls 20,22 are made of a support board 60 comprising front and rear surfaces coated by a cementitious layer 62 having a mesh 64 embedded therein; (d) the walls 20,22 are configured to define hollow portions 24 therein in which a filler 26 can be inserted; and (e) at least one of the inner panel 28 and the outer panel is staggered, and held in place by the shape of side wall spanning panels 46.

2. The structure of claim 1, wherein each of the walls 20,22 comprises at least one through-hole 32 and/or at least one passageway 52 configured and located such that the filler 26 can be contiguous throughout the grave structure.

3. The structure of claim 1, wherein each of the walls 20,22 comprises at least one through-hole 32 and/or at least one passageway 52 configured and located such that the filler 26 can be contiguous with the filler 26 of an adjacent grave structure.

4. The structure of claim 1, wherein the staggered inner and outer panels 28,30 define slits 33 at which the filler 26 is exposed.

5. The structure of claim 1, wherein the side wall spanning panels 46 include (a) sideward projecting portions 48 configured such that non-indented strips 44 interface therewith; and (b) recessed portions 50 configured such that indented strips 42 are received therein.

6. The structure of claim 1, wherein there are side wall inboard/support spanning panels 47, disposed between the side wall spanning panels 46.

7. The structure of claim 6, wherein the side wall inboard/support spanning panels 47 are shorter than the side wall spanning panels 46.

8. The structure of claim 1, wherein the support board 60 is made of a foamed polymer.

9. The structure of claim 8, wherein the foamed polymer is foamed polystyrene.

10. The structure of claim 1, wherein the mesh 64 is made of fiberglass.

11. The structure of claim 1, wherein the mesh 64 is metallic.

12. The structure of claim 1, being configured to form at least a two-story grave structure.

13. The structure of claim 12, further comprising at least one shelf 70,72, supported by shoulders 54 of the at least two intermediate side wall spanning panels 46, at least one shelf 70,72 spanning from an inner side of one of the side walls 20,22 to an inner side of the second side wall 20,22.

14. The structure of claim 1, wherein the panels 28,30 and the strips 42,44 are 1-2 cm thick.

15. The structure of claim 1, wherein at least one of the end walls 22 has at least one support spanning panel 36 between the panels 28,30 thereof.

16. The structure of claim 15, wherein the at least one support spanning panel is shorter than the panels 28,30.

17. The structure of claim 1, wherein the filler 26 is sand.

18. A method of assembling a grave structure comprising: (a) preparing grave structure boards 60 comprising front and rear surfaces coated by a cementitious layer 62 having a mesh 64 embedded therein; (b) cutting the boards 60 to form (i) side walls 20 comprising at least one pair of strips 42,44; (ii) at least two intermediate side wall spanning panels 46; (iii) end walls 22 comprising an inner panel 28, an outer panel 30; and (iv) a pair of end wall spanning panels 34; (c) arranging the cut boards 60 so that the side walls 20 are spaced apart by the at least two intermediate side wall spanning panels 46 such that strips 42,44 are staggered to form an indented strip 42 and a non-indented strip 44; and the end walls 22 are spaced apart by the end wall spanning panels 34, whereby the walls 20,22 define hollow portions in which a filler 26 can be inserted; and (d) adhering the walls 20,22 to their respective spanning panels 46,34.

19. The method of claim 18, wherein the adhering includes gluing.

20. The method of claim 19, wherein after gluing, the adhering includes fastening.

21. The method of claim 20, wherein cutting each of the walls 20,22 comprises cutting at least one through-hole 32 and/or at least one passageway 52 configured and located such that the filler 26 can be contiguous throughout the grave structure and/or to any adjacent grave structure(s).

22. The method of claim 18, wherein the staggered inner and outer panels 28,30 are arranged to define slits 33 at which the filler 26 is exposed.

23. The method of claim 18, wherein cutting the side wall spanning panels 46 comprises cutting to form (a) sideward projecting portions 48 configured such that non-indented strips 44 interface therewith; and (b) recessed portions 50 are configured such that indented strips 42 are received therein.

24. The method of claim 18, wherein cutting the boards 60 comprises cutting to form side wall inboard/support spanning panels 47, locatable between the side wall spanning panels 46.

25. The method of claim 24, wherein cutting the side wall inboard/support spanning panels 47comprises cutting them to be shorter than the side wall spanning panels 46.

26. The method of claim 18, wherein the boards 60 are cut and arranged to form at least a two-story grave structure.

27. The method of claim 18, wherein the boards 60 are cut to form at least one shelf 70,72, supportable by shoulders 54 of the at least two intermediate side wall spanning panels 46, and the at least one shelf 70,72 is arrangeable to span from an inner side of one of the side walls 20,22 to an inner side of the second side wall 20,22.

28. The method of claim 18, wherein the boards 60 are produced to be 1-2 cm thick.