Abstract: During shipping, it is not uncommon to have loads shift in transit. To help alleviate this problem, a portable bulkhead or spacing system is provided. The system is nestable for easy storage, lightweight, durable, and cost effective. The combination of these factors, thus, allows for shipping efficiencies to drastically increase so that products can be effectively shipped resulting in an overall lower cost to the consumer and generating an advantage over competition.

Abstract: A pedestal comprising (i) a pedestal base whose upper surface defines at least two pairs of open channels, (ii) horizontal lower support members placed in the channels, and (iii) at least one block component which is fitted slidably over one or more of the lower support members. Two or more block components can be used together, and upper support members can be placed in channels in the upper surfaces of the block components so that they are at right angles to the lower support members. The pedestals are particularly useful in the catering and hospitality industry for supporting food and beverage containers, tableware, flower vases and sculptures.

Abstract: The present invention is directed to a laptop computer support platform for resting a portable personal computer on. The supporting platform comprising a non rigid base structure having one or several risers to establish an air gap between the non rigid base and the laptop computer. The air gap between the non rigid base and laptop act as an insulating medium and contributes to a thermal cooling effect of the laptop computer. The riser/risers may have a rough texture and/or a non-skid material to further limit motion of the laptop computer. The non rigid base act as a barrier to heat transfered from the lower end of the portable personal computer to the surface underneath. Further, one or several designated insulation materials may be adhered underneath or inside the non rigid base to enforce the heat barrier as well as creating a more comfortable and ergonomically operating position.

Abstract: A ramp system may include a pallet configured to support a product, a ramp configured to secure the product to the pallet when the ramp is in a first position and to connect to the pallet when the ramp is in a second position and a bracket configured to be removeably connected to a top surface of the pallet.

Abstract: A movable floor system for use with a rotating gantry in a radiation treatment facility is provided that comprises a carriage assembly slidably supported within the gantry to maintain a substantially constant orientation while the gantry is rotating. An extendable/retractable panel assembly is supported on the carriage assembly that includes a plurality of non-movable floor panels and a like plurality of movable floor panels slidably mounted over corresponding ones of the non-movable panels. The movable panels are sized to span a distance between the carriage assembly and a fixed floor of the treatment room. Each of the movable panels has a platform surface for supporting a person for access to and from the patient table situated within the gantry. A control system coordinates the extension and retraction of the movable floor panels to prevent collisions with the radiation nozzle as it rotates during the patient treatment.

Abstract: A foldably constructed force-resisting structure comprises a top member and a bottom member foldably constructed and assembled from one or more blanks of sheet material, preferably corrugated paperboard, initially in a flat condition. The top member includes a base panel and at least one side portion folded downwardly from the base panel. The bottom member includes a base panel and at least one side portion folded upwardly from the base panel. The top and bottom members are assembled in nested relation to define an interior of the force-resisting structure between the base panels, which are at least substantially parallel to one another. The force-resisting structure includes a vertical support rib structure in the interior defining an X-shaped or cross-shaped configuration. The support rib structure is foldably constructed from the top member base panel and/or the bottom member base panel and provides vertical support for a load disposed on the base panel of the top member.

Abstract: A wind turbine hub transportation device is provided. The transportation device includes a hub receiving surface for receiving a wind turbine hub, a first beam, a second beam, and a center part connecting the first beam and the second beam. The first and second beam each have at least one first beam connector adapted for connecting the respective beam with a first lifter for lifting the transportation device. The center part includes a center connector adapted for making a connection to a second lifter for lifting the transportation device.

Abstract: A wire deck for supporting a load between two spaced parallel supports comprises a parallel array of first wires dimensioned to extend between the supports, and a parallel array of second wires extending across and joined to the first wires. The second wires have intermediate shaped sections projecting downwardly from an adjacent pair of first wires. The shaped sections define a channel-shaped path parallel to the first wires, with one of the first wires located at the base of that path.

Abstract: A separator for separating stacked sheets of lumber or other building materials. The separator comprises a substantially planar top and bottom surface; the top and bottom surfaces extending substantially parallel to one another. The separator further comprises two side surfaces, each with outwardly protruding side edges for preventing the separator from resting on either side surface; and a front side and a back side substantially parallel to the front surface. A plurality of channels extend into the top and bottom surfaces with the channels defining a plateau, coexistent with the top and bottom surfaces, between adjacent channels. Each channel has one or more apertures for creating a substantially vertical airflow passage between top and bottom surfaces of the separator.

Abstract: An equipment pad for a condensing unit including a base and at least one substantially hollow riser affixed to the base, wherein the at least one substantially hollow riser extends substantially vertically from the base to support the condensing unit. The equipment pad may be stackable or nestable with a second equipment pad.

Abstract: A load carrier has a rectangular bottom part and feet disposed at least in the corner regions of the bottom part. A groove for accommodating a load-securing belt is provided above the feet, encircling the bottom part. The front edge of each corner foot projects beyond the related bottom corner edge, and a nub-like elevation is provided on this projecting front edge.

Abstract: A pallet support comprising a support platform secured to a base frame via an intermediate frame, the intermediate frame being longitudinally slidable relative to the base frame and support platform, the support platform having ground engaging wheels whereby the support platform can be rolled off the base frame to pull the intermediate frame to one end of the base frame.

Abstract: The invention relates to a loading and unloading device that comprises a removable base (10) having dimensions adapted to those of the loading bed (26) of a handling trolley (62), said base having a generally planar upper face (12) for receiving goods (32) and being surrounded by a peripheral edge (14) for retaining the goods (32), a lower face (16) shaped so as to maintain the base (10) on the loading bed (26) of the trolley (62), and four side faces (18) connecting the upper face (14) and the lower face (16).

Abstract: A device for supporting a group of pipes during temporary storage, the device being composed of: an elongated pipe supporting element having a pipe supporting surface; and at least one safety stop assembly including a pipe stop member and at least one fastening element, wherein the pipe stop member is movable relative to the pipe supporting element between a stop position and a retracted, or withdrawn position, the stop member being operative, when in the stop position, to prevent removal of pipes from the pipe supporting element, and the stop member being operative, when in the retracted, or withdrawn, position, to allow removal of pipes from the pipe supporting element, and the at least one fastening element being connectable between the pipe supporting element and the pipe stop member for holding the pipe stop member in the stop position.

Abstract: A reversible heat pump stand for securely supporting heat pumps and allowing drainage of water without ice buildup. The reversible heat pump stand includes a first support frame for securely supporting a heat pump; and also includes a second support frame being interconnected to the first support frame for also securely supporting the heat pump; and further includes support members interconnecting the first and second support frames.

Abstract: In the case of a plate-like element (1) for supporting or bearing an object, with a core of generally rectangular shape and composed of a foamed plastic, wherein the core (2) is covered at least on both surfaces (3, 4) by a plastic film (6, 7) of impact-resistant material, it is provided that a connection (9) of the plastic films (6, 7), which cover the core (2) on both surfaces (3, 4), is formed in the region of a peripheral side edge (8) of the core (2) between a surface (3) of the core (2) and an adjoining, peripheral border (5) of the core (2), as a result of which a plate-like element (1) which receives a corresponding load can be reliably produced in simple method steps. Furthermore, a method for producing a plate-like element (1) of this type is provided.

Abstract: A roll support and spacing member has parallel, connected and nestable first and second sections foldable upon a hinge to provide support structure in the middle of a stack of rolls. The roll support and spacing member has upwardly and downwardly facing, roll-engaging indentations with the sections being separable to provide top and bottom support pieces for engaging rolls in the stack. The sections are movable into superposed relationship with one another. The first and second sections have peripheral flanges located along opposed sides and opposed ends thereof and formed with cooperable interlocking structure positively retaining the sections together when the sections are placed in superposed relationship.

Abstract: A pallet includes a deck and support members extending from an underside of the deck. The deck has alignment recesses as well as lowered portions along both sides of the deck for receiving the feet and runners supporting the deck to achieve nesting when stacked. The support members include two runners with orifices extending there through and aligned to accommodate pallet jacks and forklifts. The orifices have straps extending underneath the orifices to provide structural support while allowing for insertion of pallet jacks and their wheels. The pallet has feet between the runners and spaced so that the underside of the deck is unobstructed in the area intermediate the orifices providing for four way insertion of pallet jack support units. The pallet has alignment sections machined into the sides of the pallet to provide for precise alignment with pallet handling equipment.

Abstract: A skid for supporting stackable workpieces is provided. The skid includes a first and a second support member and a first and a second connecting member. The first and second support members extend in a first direction in a substantially parallel spaced relationship with respect to one another. Each support member includes a base member and a plurality of extension members extending from the base member, wherein a length of the first support base member and the second support base member is greater than a width between a pair of side guides of a stacking system. The extension members are configured to support stackable workpieces thereon. Each connecting member extends in a second direction substantially perpendicular to the first direction. Each connecting member has an end portion disposed on the base member of the first support member between extension members. The other end portion of each connecting member is disposed on the base member of the second support member between extension members.

Abstract: A separator for separating stacked sheets of lumber or other building materials. The separator comprises a substantially planar top and bottom surface; the top and bottom surfaces extending substantially parallel to one another. The separator further comprises two side surfaces, each with outwardly protruding side edges for preventing the separator from resting on either side surface; and a front side and a back side substantially parallel to the front surface. A plurality of channels extend into the top and bottom surfaces with the channels defining a plateau, coexistent with the top and bottom surfaces, between adjacent channels. Each channel has one or more apertures for creating a substantially vertical airflow passage between top and bottom surfaces of the separator.

Abstract: An ultralight unit load device comprising a ruggedized quadrangular composite structure with a cellular load-bearing core sealed in successive ordered-polymer stiffening plies and trimmed at the outer edges with a hollow, multi-chambered profile of lightweight material fixed with flush attachment means so as to present a flat surface for easy loading and unloading of payloads.

Abstract: Roll stock cradle support structure for receiving and supporting one or more pieces of roll stock, comprising: a flat base strip of rigid or semi-rigid plastic material having an upper and lower surface, at least one set of facing cradle portions of pre-selected dimensions integrally formed on one base strip surface, forming a roll support cradle, said cradle portions comprising a substantially vertical end wall and an arcuately shaped segment of rigid or semi-rigid plastic material, said segment being reinforced by members connecting the arcuately shaped segments with the end wall or base strip.

Abstract: A roll support and spacing member has parallel, connected and nestable first and second sections foldable upon a hinge to provide support structure in the middle of a stack of rolls. The roll support and spacing member has upwardly and downwardly facing, roll-engaging indentations with the sections being separable to provide top and bottom support pieces for engaging rolls in the stack. The sections are movable into superposed relationship with one another. The first and second sections have peripheral flanges located along opposed sides and opposed ends thereof and formed with cooperable interlocking structure positively retaining the sections together when the sections are placed in superposed relationship.

Abstract: A roll support and spacing member has parallel, connected and nestable first and second sections foldable upon a hinge to provide support structure in the middle of a stack of rolls. The roll support and spacing member has upwardly and downwardly facing, roll-engaging indentations with the sections being separable to provide top and bottom support pieces for engaging rolls in the stack. The sections are movable into superposed relationship with one another. The first and second sections have peripheral flanges located along opposed sides and opposed ends thereof and formed with cooperable interlocking structure positively retaining the sections together when the sections are placed in superposed relationship.

Abstract: The principles of the present invention relate to a collapsible computer platform suitable for use on a seatback tray of an airplane, train, or the like. One example embodiment includes a first platform which may be used to place a laptop or other portable computing device on. The collapsible platform also includes two or more support assemblies. The support assemblies have a top portion coupled to the first platform and a second portion configured to rest on a surface. The support assemblies are configured to be collapsible relative to the first platform and to define a cavity or open space between the first platform and the surface on which the support assemblies rest when the deployed. The defined cavity may provide an open space for storage and work while a laptop computer is placed on the first platform.

Abstract: A shipping base for washers, dryers, and the like appliances. The base is in the form of a frame having top surfaces of outer parts thereof which are set relatively lower than the top surfaces of relative inner portions of the frame. Sockets are provided at the corners, to grip and receive the feet of the appliance. The sockets having radial ribs that deflect to grip the feet of the appliance.

Abstract: A plinth comprises a base (6), a support plate (2) and support legs (4) supporting the plate (2) above the base (6). The support leg (4) includes a collar (20) which is attachable to the base (6), an extension member (22) which is received at one end in the collar (20), and a adjustment member (24) on the other end of the support leg (22), and attachable to the plate by a threaded adjuster (32, 40, 42). The adjustment member may be attached directly to the base (6), and in different orientations, so that adjuster (32) is received in different apertures (32, 32?, 32?), providing a range of adjustment at low heights.

Abstract: A payload adapter consists of a body that when hollow includes a plurality of stiffeners—radial and/or circumferential—or alternatively a core for carrying shear loads. The body may include a first annular face sheet, a second annular face sheet and a plurality of stiffeners connecting between the first annular face sheet and the second annular face sheet. The combination of the annular hollow body and the plurality of stiffeners or the same face sheets combined with an in-filled core results in an axial frequency and a lateral (pitch) frequency for the payload adapter that provides superior vibration isolation. Constrained layer damping is incorporated into the design for additional vibration attenuation.

Abstract: A pallet P of the present invention consists of a pallet main body 1, four mount sections 2 provided on the pallet main body 1, and a lower open space 5 provided below the pallet main body 1 and having open four sides. The pallet main body 1 has an abutment frame section 3 which can abut on an inner wall of a dry container A and other pallets P. According to this pallet P, if a predetermined number of pallets P are contained in the container A, the abutment frame sections 3 abut on the other pallets P, whereby a predetermined number of coiled carrying articles C which are loaded on the pallets P vertically are arranged in a zigzag fashion.

Abstract: A plastic molded deck board provides a sturdy, durable, lightweight, economical, readily identifiable, and easily handled surface for supporting cargo on top of trailer load beams. The deck board defines a platform having a top face for supporting cargo, a bottom face and a plurality of side faces. The top face defines a plurality of protrusions having variable shapes and heights and rubber stoppers for providing surface friction. The bottom face defines a plurality of side walls, a plurality of angled cross walls, a first platform channel and optionally a second platform channel disposed between the plurality of angled cross walls for receiving a center load beam of a cargo trailer. The top face defines recessed slots for receiving the angled cross walls of another deck board such that two or more deck boards can be securely stacked.

Abstract: An aircraft cargo and seating pallet having one or more internal stringer sections including a top section configured to engage a seat and/or a seat attachment. The top section may be a linear track along which the seat or seat attachment may slide, or it may include fixed attachment points for securing the seat to the pallet. The aircraft cargo and seating pallet may also include one or more hinged flaps that are positionable over flanges extending outwardly from a lower portion of the pallet. As a result, the flanges are not exposed to passengers, and the open space between adjacent pallets is substantially minimized.

Abstract: A base pad for supporting and cushioning a product such as a major home appliance. The base pad is made from a tube formed into a desired cross-sectional shape (profile) and folded into a square or rectangular frame-like configuration. V-shaped sections are cut out of the tube to facilitate the folding. The tube may have pockets located at the corners to hold vertical support posts.

Abstract: A plastic molded deck board provides a sturdy, durable, lightweight, economical, readily identifiable, and easily handled surface for supporting cargo on top of trailer load beams. The deck board defines a platform having a top face for supporting cargo, a bottom face and a plurality of side faces. The top face defines a plurality of protrusions having variable shapes and heights and rubber stoppers for providing surface friction. The bottom face defines a plurality of side walls, a plurality of angled cross walls, a first platform channel and optionally a second platform channel disposed between the plurality of angled cross walls for receiving a center load beam of a cargo trailer. The top face defines recessed slots for receiving the angled cross walls of another deck board such that two or more deck boards can be securely stacked.

Abstract: A load bearing article (1) is described and includes a plurality of elongated shells (20) having a plurality of internal reinforcing ribs (50) fixedly attached within the hollow interior (35) of each shell (20), the shells (20) reside substantially within a common plane and are fixedly attached together by means of an external molded plastic structure (53). Each elongated shell (20) has a plurality perforations (e.g., perforations 38, 41, 44 and 45) having edges. A portion of the plastic material of the internal reinforcing ribs (50) and the external molded structure (53) extends through at least some of the perforations in each shell (20), and the edges of the perforations are embedded in the plastic material extending therethrough, thereby fixedly attaching the internal reinforcing ribs (50) within and the external molded structure (53) to each shell (20). The load bearing surface (87) of the load bearing article (1) comprises (or is defined by at least) the external molded structure (53) (e.g.

Abstract: A pallet has a supporting board, multiple supporters, multiple reinforcing rings and a base. The supporting board is rectangular and is made of paper. The supporting board has a top, a bottom, four sides, an inner space and a honeycomb-like baffle. The honeycomb-like baffle is received in the inner space and is formed between the top and the bottom. The supporters are made of paper and are securely attached to the bottom of the supporting board. The reinforcing rings are made of paper, and securely mounted respectively around the supporters and abut against the bottom of the supporting board. The base is made of paper and is securely attached to the bottoms of the supporters. Accordingly, the pallet is light and is convenient to assemble and to transport.

Abstract: A flexible pallet manufactured by using plastic woven cloth or sheet, wherein square upper and lower surface materials (3) and (4) formed with plastic sheet are seamed to each other so as to form fork pockets (5) therebetween, and inner surface materials (6) and (7) are formed with woven cloth using PP mono-filaments are installed on the inner surface of the fork pockets (5).

Abstract: A binding box for packaging and paper recycling comprises of a base, four trays, and four supporting parts connecting the trays and base, respectively. Each of the trays holds a corner to a quarter of the area of the papers or materials which need to be bound. The four trays work together to hold papers or any materials that needs to be bound but there is a clearance between any two pairs of the trays. Given the clearance between the trays and the clearance between the base and trays, human hands, ropes, or binding tools can go through to bind the papers without touching any one of the trays or moving the objects which needs to be bound. The ropes are placed in the clearances between trays. Once the binding is finished, a stack of bound papers or materials can be removed directly from the top of the binding box without moving the box.

Abstract: An aircraft cargo and seating pallet having one or more internal stringer sections including a top section configured to engage a seat and/or a seat attachment. The top section may be a linear track along which the seat or seat attachment may slide, or it may include fixed attachment points for securing the seat to the pallet. The aircraft cargo and seating pallet may also include one or more hinged flaps that are positionable over flanges extending outwardly from a lower portion of the pallet. As a result, the flanges are not exposed to passengers, and the open space between adjacent pallets is substantially minimized.

Abstract: The present invention is a force resisting assembly, and can be constructed into a pallet or dunnage support made from paperboard that minimizes adverse environmental impact, occupies little space before it is configured, and effectively saves production, storage and transportation costs. The present paperboard assembly can be shipped and stored as either one or more die-cut and scored paperboard pieces, thereby eliminating excess volume, with the pieces being readily interconnectable to form a complete pallet or dunnage support assembly. Preferably, the paperboard of the present invention further has a low moisture vapor transmission rate (MVTR), excellent glueability and recyclability. The present invention incorporates a lower and upper frame member foldably constructed from paperboard blanks. Each frame member has ribs having locking slots.

Abstract: The pallet jack stop is a rectangular, durable, portable, molded, rubber wheel cradle for restraining the movement of the pivot wheel(s) of a warehouse style pallet jack. One side of the cradle is beveled or ramped. The bottom of the ramped side contains a plurality of grooves, and the perimeter of the bottom of the remaining three sides is grooved in such a manner as to cause the device to grip the supporting surface when loaded. The opposite side of the cradle has a handle that is integrally constructed with the body of the device. The cradle's construction meets all safety and environmental requirements and is structurally stable for heavy cyclic loading under a wide range of environmental conditions.

Abstract: The support slat is in the form of an integrally-molded one-piece unit. It comprises a central section provided with a pair of spaced-apart and parallely-disposed side walls. The side walls are connected to each others by a plurality of spaced-apart transversal walls. The end sections are each having a beveled transversal edge, which defines an inclined surface contiguous with an upper load-supporting surface of the support slat. The support slat is particularly well adapted to be used with corresponding support beams, thereby allowing to solve the problem of direct contact between the belts and the upper surface of stacked articles. This is achieved without interfering with another stack placed above. Another advantage of using the support slat is that it allows to increase the sliding resistance of supporting beams.

Abstract: Apparatuses and methods for facilitating supporting of an object are disclosed. One such apparatus includes an engagement member attachable to the object and adjustable from a first configuration to a second configuration in which the engagement member is configured to engage a support. The engagement member preferably occupies less volume in the first configuration than in the second configuration. The support may include a lifting member such as a forklift tine, or may include a support surface, for example.

Abstract: A pallet includes a deck and support members extending from an underside of the deck. The deck has alignment recesses as well as lowered portions along both sides of the deck for receiving the feet and runners supporting the deck to achieve nesting when stacked. The support members include two runners with orifices extending there through and aligned to accommodate pallet jacks and forklifts. The orifices have straps extending underneath the orifices to provide structural support while allowing for insertion of pallet jacks and their wheels. The pallet has feet between the runners and spaced so that the underside of the deck is unobstructed in the area intermediate the orifices providing for four way insertion of pallet jack support units. The pallet has alignment sections machined into the sides of the pallet to provide for precise alignment with pallet handling equipment.

Abstract: With an object of providing a pallet for transportation which is facilitated in fabrication as well as assembling and disassembling, light-weighted and solid there is provided a pallet 10 for transportation including (a) an upper face plate 11 constituted by a strip-like face plate made of a metal formed by constituting a sectional shape alternately aligned with (n+1) pieces of projected portions 11a and n pieces(n is a natural number) of recessed portions 11b and (b) a support member 13 in which a side face thereof is formed substantially in a square shape by being turned around to fold to bend to an inner side at four portions thereof in a longitudinal direction of the strip-like face plate and a reinforcement member 14 having a section in a channel-like shape is fitted to the projected portion between upper and lower strip-like face plates at both end portions and at least one portion of middle portions thereof in the longitudinal direction:

Abstract: A pallet system comprising a pallet and a support therefor, the support comprising two parallel opposed horizontal rails of channel section, open towards each other and spaced to receive opposed side edge portions of a pallet moved in a horizontal plane between the rails. The pallet bears on substantially the full length of the lower flanges in a stowed position and is prevented from significant upward movement by the upper flanges. The upper flanges are cut away at one end to expose to view from overhead the corresponding ends of the lower flanges, so that a pallet can be lowered to rest two of its corners on the exposed ends of the lower flanges and thus be located before horizontal movement into the stowed position.

Abstract: The support beam is an integrally-molded piece of a rigid plastic material or any other polymer or composite material, in particular a mixture of plastic material and saw dust. The support beam comprises a pair of spaced out lateral walls laid out in parallel. A plurality of spaced-apart and transversally-extending flanges are disposed between the parallel walls. The transversal flanges are configured and disposed according to at least one pattern at the end sections of the support beams and at least one pattern at the central section thereof. The support beam is designed in such a way as that the end sections have a higher compression strength than that of the central section. The support beam offers a very advantageous alternative to the support beams hitherto used for handling purposes, notably those made of solid wood or superimposed particle board sections.

Abstract: A method for storing and/or transporting outboard marine motors utilizes a rack having a rigid, substantially planar, horizontal base with parallel horizontal channels for insertion of fork lift tines. The base supports a pair of upright opposing frames, each frame in turn supporting a respective motor mounting beam. Preferably the frames and base are made of metal, while the motor mounting beams comprise a plywood plank with a metal sheath. At least two outboard motors can be mounted to each beam. Then a forklift is used to lift a fully loaded rack and load it onto a trailer or other carrier vehicle. A multiplicity of loaded racks are transported to a shipping destination. At the shipping destination, the outboard motors are removed from the racks. The empty racks are then returned to the point of origin.

Abstract: This invention comprises a support base designed to elevate an appliance such as a washer, dryer, or refrigerator in order to provide more convenient access. The invention also optionally provides castors on the bottom of the support base so that the appliance may be easily moved, if the user desires such mobility.

Abstract: A stackable pallet comprises a rectangular planar base member which has two opposing ends and two opposing sides. Extending into one of the ends of the base member is a recess which is defined by two side edges and a transverse edge. A pair of smooth curved members extend downwardly from the other end of the base member. A pair of spaced apart elongated beams extend downwardly from the base member between the ends of the same. A handle member is pivotally secured to the base member between the side edges of the recess. The handle member is adapted to be pivoted from an inoperative position, wherein the handle member is folded on top of the base member, to an operative position, wherein the handle member extends upwardly from the base member.

Abstract: This invention relates to an improved separator, commonly referred to as a “lath”, “stick”, “sticker”, or “crosser”, that is used in the lumber industry to separate pieces of lumber in a stack or bundle. The separator features, in one embodiment, a plurality of grooves extending transverse to the length of the separator to permit air circulation within the grooves, and a plurality of ridges between the grooves to support the pieces of lumber. In another embodiment, a second plurality of grooves extending transverse to the length of the separator and the first groove to form a cross-hatching of grooves to permit air circulation within the grooves, and a plurality of protrusions to support the pieces of lumber over the grooves.