Abstract: A shear resisting member of a frame structure comprising four triangular cross-section beams, each beam or stud formed from a single piece of cold formed sheet steel which is bent lengthwise along four parallel lines to form a triangular cross-section with two wings or flanges, side-by-side, extending from its apex. Within the frame structure of the shear resisting member, two frame beams have first beam lengths corresponding to the longer dimension of the opening in the wall to be reinforced, which are disposed parallel to each other. The other two beams have second beam lengths substantially shorter than the first beam lengths, the second beam length corresponding to the spacing between the frame studs or truss members of the structure being reinforced. Gussets are attached along the lengths of the wings or flanges of the second beams and the ends of the first beams to fasten the frame structure together.

Abstract: A fabricated building including a pair of metal sidewalls positioned in an upright spaced apart relationship with a plurality of metal purlins engaged with an upper edge of one of the metal sidewalls so that the plurality of metal purlins extend between the metal sidewalls and maintain them in the upright position.

Abstract: A building panel system which has a panel to panel connection utilizing opposing male and female joints formed integrally with the external and internal side of structural composite panels. Also, reinforcing splines (32) embedded in the foam between the panel skins. A panel to floor connection utilizes a Z-shaped section (42) with an anchor member (44) embedded into a concrete floor slab or foundation wall. A panel to roof connection uses an angle member (52), trough (56) and shelf (60) joined together with threaded fasteners (38). A panel to roof rail structural connection utilizes the same troughs (56) and inside and outside roof connectors (70) and (72). Thermobreak strips (54) are employed to prevent thermal feedthrough and caulking (40) is used as a vapor barrier in all connections.

Abstract: An oven module for use in industrial baking applications is disclosed having apparatus for accommodating the longitudinal thermal expansion in the interior walls of the oven module located intermediate the ends of the module. The oven module is easily assembled into an oven baking line because its ends are fixed and do not vary due to thermal expansion. Therefore, the present oven module alleviates numerous disadvantages in the shipping and assembly of an oven baking line which has been experienced with prior known oven modules. The floor, walls and roof of the oven module have both an interior and an exterior structure so that the interior surfaces of the oven module can be independently and rigidly supported. At opposite ends of the module, the interior and exterior structures for the floor, walls and roof are fixed to a common support member.

Abstract: Prefabricated Truss includes a header for use above an opening in a wall such as for a garage door opening. The truss extends below the level of the top king plate of adjacent walls to a level where the header would normally be found. By including the header in the prefabricated truss, labor and materials are saved.

Abstract: A structure including at least two generally parallel, spaced-apart side walls, and a plurality of roof panels extending between the side walls for forming the roof of the structure. Each roof panel has opposite ends overlying the upper ends of respective side walls. The roof panels and side wails are constructed with a bayonet connection device for quick connection.

Abstract: A horizontally level terrace floor having a plurality of solid blocklike support pedestals composed of a heat shearable material, that are directly affixed in spaced apart relationship onto a substructure. The support pedestals have been sheared to produce upper surfaces that are all horizontally level with respect each other. Atop the support pedestals are a plurality of joint dividers, and, a plurality of paving blocks are laid directly on the support pedestals, abutting the joint dividers.

Abstract: A building (1) or other walled structure has a foundation (6) formed of concrete or the like, a substantially rigid load bearing space frame (2) comprising a plurality of beams (4) and columns (3) secured to the foundation, and lightweight wall panels (5) extending between the columns. The lower edges of the wall panels are located and supported by elongate inserts (12) e.g. angle irons, in channels (11) formed in the foundation, and the upper edges are engaged in downwardly facing channels formed in the beams. In upper stories, the lower edges of wall panels are engaged in upwardly facing channels also formed in the beams.

Abstract: The present invention discloses a panel system and method for building construction in which standing seam panels are attached to one another such that the inner flange of one panel attaches to the outer flange of an adjacent panel such that the tongue of the inner flange is received by the groove of the outer flange. Multiple panels are joined together to form wall, ceiling, and roof sections. Clips are used to secure wall sections to ceiling sections.

Abstract: Connector means embodying the concepts of the present invention are adapted to secure one or more roof panel members to a modular building structure. Broadly, such a connector means has a horizontally disposed base portion that is adapted to engage a supporting member incorporated in, and presented from, the modular building. An inclined, plate portion is supported from the base portion. The plate portion is adapted to receive, and support, the roof panel. A locking member frictionally secures each roof panel to one or more inclined plate portions.

Abstract: A building construction for industrial, commercial or similar buildings comprising at least one wall made of a plurality of prefabricated panels, each of which comprises to transversely spaced trusses to which spaced sheets are fastened. The panels are assembled on a base wall in side-by-side relationship with the transversely outermost truss of each panel closely adjacent and preferably in abutment with the adjacent outwardly positioned truss of the adjacent panel. A load plate is provided at each of the areas of juncture between panels. Joists, trusses or prefabricated roof panels extend horizontally from the load plates to provide a ceiling or roof structure. The panels comprise a pair of abutting trusses along each side edge of each panel. In another form, each panel includes a pair of trusses adjacent the transverse mid-point which are closely adjacent and preferably in abutting relationship with a load bearing plate at the transverse midpoint.

Abstract: A building structure has structural wall panels of metal skin/insulating foam/fibrous cement sheet (or structural plywood) laminate construction secured to a floor assembly by brackets which are bolted to longitudinal bearers and to roof truss frames by brackets to enable loads to be distributed through the wall panels, floor assembly and roof truss frames. The longitudinal bearers are formed of C-section beams secured back-to-back and the joists are secured by tabs extending fro the webs of the bearers.

Abstract: A building structure having high blast and penetration resistance, including a plurality of walls at least one of which is of a sandwich construction including four composite panel structures each including a first group of face panels having interlocking ends, a second group of face panels having interlocking ends spaced from said first group, a plurality of laceing panels extending diagonally between the two groups of face panels and having ends interlocking with the interlocking ends of the two groups of face panels, and a filling material filling the spaces between the two groups of face panels and embedding the laceing panels. The filling material filling the spaces between the face panels is a solid material such as cast concrete, and the space between the composite panel structures is filled with a loose filling material, such as loose sand, gravel, pebbles or stones.

Abstract: A structural support system for a building is formed from preferably prefabricated, light weight steel framed, bearing wall panels and precast, hollow core concrete floor slabs that are positively interlocked by, for example, splice plates, provided at the top of the bearing wall panels, reinforcing bars and grout, which fills the joints between adjacent slabs to form a unitary structure.

Abstract: A building wall system comprises spaced, parallel exterior and interior walls formed from elongated stacked wooden beam members having opposite ends received in vertical channels secured to vertical elongate wooden supports extending upwardly from a sub-floor or bottom plate. Upper end portions of the vertical supports are connected together by a top connecting chord extending between the exterior and interior walls. A top plate is secured to uppermost stacked beams to complete the wall structure. A space defined between the top plate and top chord located therebelow allows for settlement of the stacked wooden exterior and interior beams to occur after constructions without the top plate descending into destructive contact with the top connecting chord. The channels are either straight or ribbed channels and wooden connecting structures connected to allowing for settling of the stacked wooden beams are also disclosed.

Abstract: What is provided is a system which would utilize a plurality of glare modules, constructed of a lightweight foam material, and that could be positioned spaced apart end to end, along the length of the highway median barrier. Each of the modules would be secured to the barrier by a pair of mounting rods firmly secured to the upper face of the barrier and slideably engagable into a pair of openings in the bottom of the barrier module. The barrier panel would then be secured to the mounting rods with a locking pin.

Abstract: The specification relates to an arrangement in an intermediate floor or the base floor of a building, producing a duct system for electrical or HEPAC installations. At the end of the cored slabs (1) there is produced, by means of a supporting component (3), a transverse duct which communicates with the cores (6) of the cored slabs. The duct may also be formed by means of a channel beam which adjoins the end surfaces (5) and has openings in alignment with the cores (6). The transverse duct is preferably covered with a separate cover (4).

Abstract: A polymer building or other structured wall form construction wherein forms prefabricated of polymer, such as polystyrene, are assembled together, spaced apart by integrally connecting polymer or blocks or spacers, erected upon a foundation footing, or other base structure, through their insertion upon L-shaped ties, with the wall forms being erected to the desired height for the subject building or other structure, through the application of tee-shaped ties therebetween. Reinforcement is located in the spacing between the blocks of the wall forms, and concrete may be poured therein, to provide a latticework of reinforced concrete for the composite wall. A top beam form of plate cap is arranged upon the upper edge of the formed wall, with a concrete beam being poured simultaneously with the construction of the assembled wall.

Abstract: A protective enclosure for a backflow prevention device including a rectangular cover member having insulated top and side walls secured to a platform member to completely enclose the backflow prevention device. One of the side walls is provided with a drain opening adjacent the platform member and a closure member hinged above the drain opening and biased to a closed position. In large cover members, the side walls are sub-divided into removable side panels to facilitate access to the interior space within the cover member and also to facilitate assembly and disassembly.

Abstract: An adjustable sidewall connection for roof joists includes a plurality of diverging braces connected at one of their ends to substantially the same location on the joist and diverging at their other ends to three spaced apart points of attachment to the sidewall, thereby bracing the joist against movement in a direction parallel to the plane of the sidewall and providing support to the sidewall in a direction perpendicular to the plane of the sidewall. The adjustable connection spans the space between the joist and adjacent sidewall in those constructions where the distance between sidewalls is not divisible by four (the nominal width of each joist).

Abstract: A panel for a raised floor of a clean room, such as for a semiconductor manufacturing facility, comprises tubes (2) whose open ends (3) are slipped over respective spacers (4) of spacer bars (5), providing cross-connection and support for said tubes (2). No welding or adhesives are needed. The size of the panel can be conveniently changed or adapted in the plant or in the field.

Abstract: A room structure to be located on a deck. A plurality of independent wall members flanged at their lower ends for connection to the deck. Grooved members interconnect the tops of adjacent wall members. Roof members span the tops of the wall members. Each set of roof members of a room structure includes at least one beam containing a supply for electricity, heat and ventilation and also containing apparatus for using the same. The roof members include ceiling plates resting on the groove members and supported by the beam.

Abstract: A protective peripheral cornice of a building which cornice is an equal angle broad flanged beam inserted between the top of the wall and the end section of the ceiling. Such beam is made of light material which is totally enveloped in a metal sheet except for two interruptions in each of which the sheet is replaced by bridgelike means of insulating plastic material which extend for about 1/2 the panel thickness; one of said interruptions being located across the horizontal median plane of the roof panel while the other is located across the vertical median plane of the wall panel. Such interruptions having thus the function of thermal insulations or thermal barriers.

Abstract: A delta-shaped roof joist structure provided with load transfer wall attaching clips at spaced intervals therealong for transferring both horizontal and perpendicular loads between the joist structure and a wall of a building. The load transferring clip structure includes a formed member of plate-like material having at one end a U-shaped portion for association and adjustment along a load transfer angle iron of an associated roof joist, and on the other end the member having an extension integral with one side of the U-shaped portion, and at substantially right angles thereto. The extension has an aperture for reception of wall affixing fastening elements therethrough.

Abstract: A support system for a multiple-span bridge constructed of reinforced concrete or prestressed concrete includes a primary structure and a secondary structure. The primary structure bridges the spans between intermediate supports or between an abutment and an adjacent intermediate support and includes serially arranged support members elongated in the long direction of the bridge. The width of the support members is a fraction of the full useful width of the bridge. The secondary structure forms the roadway slab and is supported on the primary structure. The secondary structure is made up of serially arranged individual roadway sections extending in the long direction of the bridge. The roadway sections are supported by bearing members resting directly on the support members of the primary structure with the roadway sections being closely spaced in the elongated direction of the bridge as compared to the spans between the intermediate members and the abutments.

Abstract: A panel comprising a perimeter frame, a pair of skins spaced apart by the perimeter frame, and load distributing connecting members at the corners of the frame. The perimeter frame is formed from members having two oppositely directed channels so that when a pair of panels are positioned in a side by side relationship one channel of the perimeter frame of one panel will enter the other channel of the perimeter frame of the adjacent panel. The load distributing connecting members have a tongue to engage the inwardly facing channel of the perimeter frame. The invention also comprises a building having a floor, walls, ceiling, and roof wherein at least the walls are formed of panels according to the invention.

Abstract: A metallic floor panel having top, sides and ends with the sides being longer than or equal in length to the ends. The panel has a flat upper surface. End channels are attached to the upper surface at each end and side channels are attached to the upper surface at each side. The side channels extend further from the upper surface than the end channels. Major ribs, generally parallel to the ends of the panel extend the width of the panel. Minor ribs are arranged between the major ribs and between the major ribs and the end channels. The end channels have lower surfaces generally parallel to the top surface to enable mounting of the panel to a main beam of a building.

Abstract: A ceiling/floor or ceiling/roof structure comprising a plurality of substantially parallel substantially horizontally extending joists, each joist being supported at the two opposed ends thereof, a first set of transverse members resting on the top of and secured to the top of at least some of said joists, and a further set of transverse members extending underneath and connected to the lower surfaces of at least some of said joists, the said structure being adapted to be associated with ceiling and/or roofing or flooring materials.

Abstract: A room addition type of construction for attachment to the outside wall of a building. The wall has an opening for access to the interior of the building. A foundation is provided adjacent the wall and an upright frame assembly is mounted on the foundation. The frame includes side wall frames, an outer wall frame, and a roof frame. A plurality of structurally independent panel members are securely mounted in each of the frame portions with a substantial portion of the panels comprising window units having glazing panels therein. The panel members cooperate with the frame assembly for providing load bearing support for the structure. The frame assembly is secured to the building and a weather seal is provided between the room structure assembly and the building. The panels are secured to each other and to the frame assembly and weather seals are provided between the panels and between the panels and the frame assembly.

Abstract: A two part molding structure provides a quirk or reveal about a cylindrical column, one part being a spacer ring of flexible material, and the other part being an extruded metal grounding member of simple cross sectional configuration whereby it can be preformed or bent in situ to surround the spacer ring and form therewith the channel or reveal. The grounding member either provides a channel upon which ceiling tile can rest, or an edge against which moldable material, such as plaster, can be applied.

Abstract: A system of pre-formed panels, trusses, and roof elements, configured so as to affix to and integrate with one another to form a building structure. The truss elements are independently supported by columns. The several wall panel frames are attached to said support columns, to each other, and to the foundation of the structure. The roof panel frames are attached to the walls, to the trusses, and to each other. The entirety forms an integrated structure of substantial strength.Each wall panel frame is pre-formed so as to, after erection of the structure frame, receive exterior sheeting, in half-standard sheet sizes, within its outer frame, said sheeting being rigidly affixed to said panel frame. Similarly, interior sheeting is affixed to the inner side of the said panel frame, and insulation may be introduced between the two sheets. Exterior sheeting is similarly affixed to the roof panel frames, which is subsequently overlaid with standard roofing materials.

Abstract: A support system for a building structure having a foundation formed of a plurality of spaced, parallel support beams wherein each support member includes a planar base having a vertically extending support member which is threaded around its periphery, an elongated thrust member wherein the center thereof is formed into a hollowed-out central area having its interior wall thereof threaded to coact in response to rotation between the vertically extending support member and the elongated thrust member has at least two protruding members extending from the rim thereof, a bottom member having a vertically extending portion which is adapted to receive the elongated thrust member mounted on the vertically extending support member and wherein the bottom member has a pair of aligned base tabs positioned adjacent the planar base, an elongated sleeve member which is adapted to be inserted into the vertically extending portion of the bottom member and wherein the elongated sleeve has two slots which are adapted to rece

Abstract: The invention is comprised of a plurality of stud members positioned in a spaced-apart and generally parallel fashion with respect to each other at the building site. A plurality of blocks are positioned between adjacent stud members. A plurality of rods are wedged between the stud members and blocks so as to extend between stud members to form a lattice assembly. The blocks are held within the lattice assembly by the rods and studs. The entire lattice assembly is surfaced with a layer of concrete, plaster, or other suitable building material to provide a load bearing building structure. Providing that the surface material can withstand the abuses of weather, the building structure of the invention may be used for exterior walls and roofs. In a specific embodiment in which the blocks are of a foamed polystyrene insulating material the invention provides a better insulated building structure than conventional construction.

Abstract: The invention relates to a method for reducing the heat consumption in a building or the like. This is brought about by the fact that the air movement caused by free winds close to the external surfaces of the building or the like is reduced by means of air permeable screens which are applied close to the external surfaces of the building or the like. They may also be applied close to external surfaces of other adjacent buildings or the like. The screens are disposed substantially transversely to the dominant direction of the free winds along the last-mentioned surfaces.The invention also relates to means for carrying out the method, consisting of one or more air permeable wind screens which are fitted to the building or the like.

Abstract: A ceiling system for a small building includes panels that span the space between the side walls of the building and rest on end caps that extend over the upper edges of the walls for the building. The end caps have upwardly directed sections which, along with facia trim strips, obscure the peripheral surfaces of the panels. Each panel includes a surrounding metal frame having inwardly turned flanges and a composite filler member formed from an upper protective layer, a lower decorative layer, and an intermediate insulating layer. The sides of each frame are configured to interlock the panel of that frame with the frames of the adjacent panels, and are further configured to enable the panels to pivot into interlocking engagement.

Abstract: In a double-walled tank for low-temperature liquids, such as liquid gas, an inner tank forming a primary safety casing is enclosed by an outer tank forming a secondary safety casing. The outer tank is constructed of reinforced concrete. A layer of thermal insulation is provided between the inner and outer tanks. The inside surface of the outer tank at least on the side wall and base is covered first by a vapor-tight layer and then by a layer of a liquid-tight thermal insulation material, preferably polyurethane foam.

Abstract: A building construction comprised of front and rear planar supports having purlins spanning between the supports and attached to the supports by hangers attached to the outside surfaces of the supports, i.e. the surface of the support opposite the surface generally adjacent to the purlin. The hanger comprises a seat to which each purlin is connected, and two arms integrally secured to the seat. The arms include integrally formed nails which attach to the surface opposite the surface adjacent to the seat portion of the hanger. Notches are included at the periphery of the support through which the arms of the hangers are hung. The method of construction involves setting up a floor, attaching and bracing the planar supports, hanging and attaching the purlins, taking away the braces, and adding the roof, sidewalls, and other parts to provide a building construction to be used as a storage hut or the like.

Abstract: This application discloses a system of construction that uses as its main component, a flat panel member similar to a standard 2.times.8 timber with both edges beveled at a 45.degree. angle in opposite directions with an interlocking female recess in one of the 45.degree. sections and an interlocking male extrusion on the opposing 45.degree. section. These components may be assembled to provide: (1) a straight narrow wall by reversing adjacent panels and sliding male extrusions and female recesses together, (2) assembly of two adjacent panels to form an angle by sliding male extrusion and female recess together without reversing the sections, (3) forming a U channel by sliding three sections together in a similar manner, (4) sliding four sections together in a similar manner to form a square, hollow beam section.

Abstract: A housing structure consisting of a plurality of wall panels connected to each other by mullions with a snap-locking engagement, with the side walls connected to each other at their corners by corner posts with a snap-locking engagement, and a roof consisting of a plurality of panels snapped together by means of mullions with a snap-locking engagement, a snap-locking connection between the roof and the side walls and a snap-locking connection between the side walls and the base.

Abstract: An auxiliary insulated roof system for mobile homes, metal buildings and the like includes a generally continuous panel structure of insulation material, a plurality of insulated support blocks for supporting the panel structure in clearance relation above the building roof surface and a plurality of fastening brackets for securing the panel structure to the building sidewalls. The insulated support blocks may include a base plate having a stud extended from one side for penetrating the panel structure and a block of insulation material secured to the opposite side thereof. The insulation blocks may be connected to elongated straps at spaced-apart positions therealong with opposite ends of the straps secured to the building sidewalls for partially securing the panel structure in place. A trim strip covers the fastening brackets and opening between the panel structure and roof surface.

Abstract: A structural building panel comprising interior and exterior skins, the vertical edges of which are connected to pairs of hat shaped cross section vertical members, said vertical members being arranged with the channel portions of the sections facing each other and spaced apart by horizontal girts between said skins joined to the hat shaped vertical members, the space between said skins being filled with insulation.

Abstract: An insulated vehicle body, such as a refrigerated truck or trailer, has load carrying reinforcement beams in the roof structure with bottom slots accessible through openings in the ceiling skin to receive removable hangers that may be used to suspend meat rails or other articles from the roof structure.

Abstract: A low cost, structurally superior bridge and fabrication method are described which take maximum advantage of the compressive strength of concrete, and the tensile strength of steel, to give a bridge structure having the lowest allowable depth-to-span ratio and good dead load/live load ratios, as well as minimum deflection under impacting, moving concentrated loads. The bridge is most preferably shop cast in sections which include lowermost, substantially planar structural metallic plates (e.g., 5/16" thick self-rusting steel) of length and width dimensions substantially equal to that of the sections; a separate layer of concrete is then composited to each plate, preferably by means of upstanding studs secured to the plate and embedded within the concrete. Monolithic bridge sections are thus formed which can be transported to the bridge site, erected and connected, typically by welding the respective section plates together at regular intervals.

Abstract: An auxiliary insulated roof system for mobile homes, metal buildings and the like includes a generally continuous panel structure of insulation material, a plurality of insulated support blocks for supporting the panel structure in clearance relation above the building roof surface and a plurality of fastening brackets for securing the panel structure to the building sidewalls. The insulated support blocks may include a base plate having a stud extended from one side for penetrating the panel structure and a block of insulation material secured to the opposite side thereof. The insulation blocks may be connected to elongated straps at spaced-apart positions therealong with opposite ends of the straps secured to the building sidewalls for partially securing the panel structure in place. A trim strip covers the fastening brackets and opening between the panel structure and roof surface.

Abstract: An insulated building for enclosing a refrigerated space is assembled from a plurality of standard-sized modules with each module connected to its adjacent module through a joint interface that includes confronting sealing surfaces that are formed parallel to, perpendicular to, and obliquely to the plane of the modules and connected together by a threaded fastener that extends at an oblique angle to the plane of the modules so that each pair of confronting surfaces are placed under a positive sealing force to provide both a moisture-proof and structurally rigid joint.

Abstract: Side panels, terminating with inwardly directed flanges extend from the vertical edges of an upright main panel to form a generally channel shaped unit. The lower edge of each side panel is spaced above the lower edges of the main panel and the flanges to receive a conventional sill. A bearing plate extends inwardly from the lower edge of each side panel to rest upon the top of the sill. The upper edges of the side panels and the flanges terminate below the upper edge of the main panel to form a ledge for supporting a conventional beam. A recess, formed in the upper corner of the main panel, accommodates the beam and has a beam attachment plate extending therefrom.

Abstract: A multi-use metal building comprises a skeleton composed of vertical posts connected to upper and lower horizontal longitudinal girders, thus forming a frame ensuring transverse and longitudinal stability.In the horizontal plane, the skeleton comprises self-supporting metal trough elements modulated to the same width as the posts, with corrugated cross section, these trough elements resting on the upper longitudinal girders of the frame and serving on the one hand as floor support and on the other hand as roof.The vertical walls (posts, upper and lower longitudinal girders, outer skin made of asbestos and inner insulating partition) ensure the vertical stability in both directions.

Abstract: A roof construction utilizing thermoplastic panels and a method of making the same. The thermoplastic panels are arranged in edge contacting relation to span a roof underpanel supported by a roof frame. The thermoplastic panels carry anchor members projecting through openings in the underpanel and secured to the frame. The thermoplastic panels are bonded together at their margins. The thermoplastic panels at the roof margins have downturned flanges. Gutters have flanges which underlie and are anchored to the marginal panels at building eaves.The method involves formation of spaced openings in the roof underpanel adjacent to roof frame members to receive thermoplastic anchor strips whose upper ends contact the thermoplastic panels to be bonded thereto by the application of heat to the panel part contacted by the anchors. The lower ends of the anchors are secured to the frame members.

Abstract: An insulated closure panel is disclosed, in the preferred embodiment of the present invention, for closing off openings under floors and roof decks where prestressed double tee concrete construction spans are used. The closure panel includes an insulating core sandwiched between two facing members. The top and sides of the facing members are undersized from the top and sides of the core, thus allowing the closure panel to be inserted into the opening of the construction spans such that the core can be snuggly fit in the opening while avoiding chipping of the facing members or avoiding pulling the facing members away from the core. The closure panel can be held in the opening of the construction span by foam type construction adhesive. Further, caulking can be added in the groove formed between the top and side edges of the undersized facing member and the surface of the construction span for providing a seal therebetween.

Abstract: A roof structure of the type having a plurality of wooden beams whose sides are provided with mortices for receiving end edges of roofing panels. The invention improves the strength of the structure by employing a generally zig-zag or corrugated cross-section by arranging the mortices such that at least a major portion of each mortice extends at an acute angle with respect to the elongation of the beam, which generally corresponds to the direction of wood grain. The invention thus provides the advance of an increased strength of the structure as compared with prior art which is typical by the mortices being generally straight and/or parallel with the elongation of the wood grain which normally corresponds to the elongation of the beam.