SE461075B - ELEMENTS FOR THE BUILDING OF TRAFFIC LIFE FOR BALMS AND PROCEDURES FOR THE MANUFACTURE OF ANY SUCH ELEMENT AND BALM LIFE BUILT BY TWO OR MORE SUCH ELEMENTS - Google Patents

ELEMENTS FOR THE BUILDING OF TRAFFIC LIFE FOR BALMS AND PROCEDURES FOR THE MANUFACTURE OF ANY SUCH ELEMENT AND BALM LIFE BUILT BY TWO OR MORE SUCH ELEMENTS

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Publication number
SE461075B
SE461075B SE8704679A SE8704679A SE461075B SE 461075 B SE461075 B SE 461075B SE 8704679 A SE8704679 A SE 8704679A SE 8704679 A SE8704679 A SE 8704679A SE 461075 B SE461075 B SE 461075B
Authority
SE
Sweden
Prior art keywords
tips
elements
diagonal struts
life
strip
Prior art date
Application number
SE8704679A
Other languages
Swedish (sv)
Other versions
SE8704679D0 (en
SE8704679L (en
Inventor
T Carlsson
Original Assignee
Skanska Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Skanska Ab filed Critical Skanska Ab
Priority to SE8704679A priority Critical patent/SE461075B/en
Publication of SE8704679D0 publication Critical patent/SE8704679D0/en
Priority to EP88850397A priority patent/EP0318450A1/en
Publication of SE8704679L publication Critical patent/SE8704679L/en
Publication of SE461075B publication Critical patent/SE461075B/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C3/08—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with apertured web, e.g. with a web consisting of bar-like components; Honeycomb girders
    • E04C3/09—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with apertured web, e.g. with a web consisting of bar-like components; Honeycomb girders at least partly of bent or otherwise deformed strip- or sheet-like material
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0408—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section
    • E04C2003/0413—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section being built up from several parts
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0408—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section
    • E04C2003/0421—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section comprising one single unitary part
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0426—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section
    • E04C2003/0434—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section the open cross-section free of enclosed cavities
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0443—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
    • E04C2003/0473—U- or C-shaped

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Description

461 075 balkar nedan att beskrivas med hänvisning till bifogade rit- ningar. av vilka; fig l visar en perspektivvy av en del av ett element enligt uppfinningen. fig 2 visar elementet i fíg l sett uppifrån. fig 3 visar elementet i fig 1 innan det har rullformats. och fig 4 visar en perspektivvy av två samverkande element enligt uppfinningen. 461,075 beams below to be described with reference to the accompanying drawings. of which; Fig. 1 shows a perspective view of a part of an element according to the invention. Fig. 2 shows the element in Fig. 1 seen from above. Fig. 3 shows the element of Fig. 1 before it has been rolled. and Fig. 4 shows a perspective view of two cooperating elements according to the invention.

Det i figurerna 1 och 2 visade livelementet enligt uppfinnin- gen löper sågtandsformígt och innefattar díagonalstag 1.2 och plana spetsar 3. Vidare har diagonalstagen hattformigt tvär- snitt. dvs de är bockade till en central U-balk 4 med utåtboc- kade flânsar eller brätten S hos U-ets skänklar. Såsom framgår av fig l och 2 vetter insidan hos diagonalstagen mot varandra och i det visade exemplet är djupet av den centrala delen 4 hos díagonalstagen vald så att två av brättena 5 hos angrän- sande diagonalstag anligger mot varandra i spetspartiet hos varje sagtand. Därigenom kan dessa brätten i dessa partier en- kelt förbindas med varandra, exempelvis genom nitning eller punktsvetsning. varför en tillfredsställande styvhet hos ele- mentet lätt kan erhållas.The web element according to the invention shown in Figures 1 and 2 runs saw-shaped and comprises diagonal struts 1.2 and flat tips 3. Furthermore, the diagonal struts have a hat-shaped cross-section. ie they are bent to a central U-beam 4 with outwardly bent flanges or the boards S of the U's legs. As shown in Figs. 1 and 2, the inside of the diagonal struts face each other and in the example shown, the depth of the central part 4 of the diagonal struts is chosen so that two of the boards 5 of adjacent diagonal struts abut each other in the tip portion of each saw tooth. As a result, these boards in these parts can be easily connected to each other, for example by riveting or spot welding. why a satisfactory rigidity of the element can be easily obtained.

Det uppfinningsenliga elementet tillverkas utgående från plana plåtband. vilka är upprullade på en rulle. Plåtbandet matas från rullen igenom en stansapparat. i vilken uttagningar 6 ur- stansas. vilkas konfiguration framgår av fig 3. Avståndet mel- lan dessa urtagningar 6 är en funktion av önskad höjd hos ele- mentet och beror således pâ vinkeln mellan två angränsande diagonalstegar hos ett färdigtillverkat element.The element according to the invention is manufactured on the basis of flat sheet metal strips. which are rolled up on a roll. The sheet metal strip is fed from the roll through a punching apparatus. in which selections 6 are punched out. the configuration of which is shown in Fig. 3. The distance between these recesses 6 is a function of the desired height of the element and thus depends on the angle between two adjacent diagonal ladders of a finished element.

Det stansade bandet passerar därefter igenom en rullformnings- anordning, i viken de diagonalstagen bildande delarna hos ban- det rullformas till ovannämnda hattprofilform. Dessa hock- níngslínjer 7.8 indikeras med streckade linjer i fig 3.The punched strip then passes through a roll forming device, in the bay the diagonal struts forming parts of the strip are rolled into the above-mentioned hat profile shape. These squatting lines 7.8 are indicated by dashed lines in Fig. 3.

Efter att rullformníngen utförts tvärbockas bandet 90° utmed två parallella bockningslinjer 9 i den kvarvarande delen hos 461 075 bandets urtagna partier. vilka bockningslinjer lutar med vin- keln u mot bandets längsriktning, såsom framgår av fig 3 där även dessa bockningslinjer 9 indikeras med streckade linjer.After the roll forming has been performed, the belt is bent 90 ° along two parallel bending lines 9 in the remaining part of the recessed portions of the 461 075 belt. which bending lines are inclined at an angle u to the longitudinal direction of the belt, as can be seen from Fig. 3, where these bending lines 9 are also indicated by dashed lines.

Härvid skall det vinkelräta avståndet mellan dessa senare bockningslinjer vara lika med eller större än dubbla djupet a hos diagonalstagens hattprofil. Sistnämnda avstånd mellan bockningslinjerna väljes till 2a dels för att intilliggande brätten 5 hos.två angränsande diagonalstag inom spetspartiet skall anligga mot varandra och dels för att varandra överlap- pande diagonalstag hos samverkande livelement skall anligga mot varandra.In this case, the perpendicular distance between these later bending lines shall be equal to or greater than twice the depth a of the hat profile of the diagonal struts. The latter distance between the bending lines is chosen to 2a partly so that the adjacent boards 5 of two adjacent diagonal struts within the tip portion are to abut each other and partly so that overlapping diagonal struts of cooperating web elements are to abut each other.

Lutníngen mot bandets längsriktning hos bockningslinjerna 9 i den kvarvarande delen av bandets urtagna partier är företrä- desvis 45°. Därigenom kommer även diagonalstagen att luta 45° mot livelementets längsriktning. vilket ur kraftfördelnings- synpunkt är fördelaktigt.The inclination towards the longitudinal direction of the belt at the bending lines 9 in the remaining part of the recessed portions of the belt is preferably 45 °. As a result, the diagonal struts will also tilt 45 ° towards the longitudinal direction of the life element. which from a power distribution point of view is advantageous.

Såsom vidare framgår av figurerna är ändarna hos de diagonal- stagsbrätten 5. som i spetspartiet inte ligger intill brättän- dar hos angränsande díagonalstag, avskurna för att inte skjuta upp ovanför livelementets plana spetsar. Även de två övriga brättändarna skulle kunna vara avskurna, såsom indikeras med streckprickade linjer 10 i fig 3, för att stansdynorna i stansapparaten skall kunna göras vändbara.As further appears from the figures, the ends of the diagonal strut boards 5. which in the tip portion do not lie next to the bristle ends of adjacent diagonal struts, are cut off so as not to protrude above the flat tips of the life element. The other two board ends could also be cut off, as indicated by dash-dotted lines 10 in Fig. 3, so that the punching pads in the punching apparatus can be made reversible.

I fig 4 visas en del av ett fackverksliv sammansatt av två livelement. som är utformade i enlighet med fig l och som är trädda in i varandra. Diagonalstagen hos de bägge elementen är betecknade med ll, 21 resp 12, 22. För att minska knäcklängderna hos diagonalstag, som är utsatta för tryckkraf- ter, kan de varandra överlappande delarna hos brättena 5 till diagonalstagen ll och 22 resp 12 och 21 fästas till varandra, exempelvis genom punktsvetsning. varigenom dragbe- lastade diagonalstag kommer att stötta tryckbelastade diago- nalstag. Om diagonalstagen därvid är symmetriskt förskjutna relativt varandra kommer således knäcklängderna att minska till hälften. I fig 4 betecknas fästpunkterna mellan de två 461 075 4 livelementen med ll.Fig. 4 shows a part of a truss life composed of two live elements. which are designed in accordance with Fig. 1 and which are threaded into each other. The diagonal struts of the two elements are denoted by ll, 21 and 12, 22, respectively. In order to reduce the buckling lengths of diagonal struts which are subjected to compressive forces, the overlapping parts of the boards 5 of the diagonal struts 11 and 22 and 12 and 21, respectively, can be attached to each other, for example by spot welding. whereby tensile-loaded diagonal struts will support pressure-loaded diagonal struts. Thus, if the diagonal struts are symmetrically offset relative to each other, the buckling lengths will be reduced by half. In Fig. 4, the attachment points between the two life elements are denoted by ll.

Det inses vidare att fler än tvâ livelement kan trås in i var- andra. vilket innebär att knäcklängderna ytterligare kan mins-- kas. Således kan flera livelement genom inbördes förskjutning i längsled sättas ihop inom samma totala sektionsmått. som er- fordras för ett livelement. Därigenom kan diagonalstagen för- tâtas på vissa partier av balklivet utan inverkan på utform- ningen av balkens anslutande delar. såsom exempelvis flänsar.It is further understood that more than two live elements can be threaded into each other. which means that the buckling lengths can be further reduced. Thus, several live elements can be assembled longitudinally by mutual displacement within the same total section dimensions. required for a live element. As a result, the diagonal struts can be tightened on certain parts of the beam life without affecting the design of the connecting parts of the beam. such as flanges.

Genom att variera antalet samverkande livelement utefter läng- den av fackverkslivet kan detta anpassas till tvärkraftsdia- grammet för den balk, i vilken livet skall ingå. Detta medger att godsmängden i ett sådant balkliv kan optimeras enbart med hjälp av likformíga lívelement med olika längd. Det är natur- lígtvis även möjligt att använda likformiga livelement med olika plåttjocklek under förutsättning att hattprofilernas djup är lika.By varying the number of cooperating life elements along the length of the truss life, this can be adapted to the transverse force diagram for the beam in which the life is to be included. This allows the amount of goods in such a beam life to be optimized only by means of uniform living elements of different lengths. It is of course also possible to use uniform web elements with different plate thicknesses, provided that the depth of the hat profiles is equal.

Det uppfinningsenliga elementet medger i sina spetspartier ge- nom de plana spetsarna 3 och utsidorna hos diagonalstagen l och 2 goda ínfästningsytor för med balklivet samverkande flän- SBI.The element according to the invention allows in its tip portions through the flat tips 3 and the outer sides of the diagonal struts 1 and 2 good fastening surfaces for flange SBI cooperating with the beam life.

För att medge tillverkning av balkliv med olika höjd är stans- apparaten företrädesvis anordnad så att avståndet mellan ur- tagningarna i bandet kan inställas. Hed fördel är därvid in- ställningsanordningen så utformad att detta avstånd kan vari- eras mellan efter varandra följande stansmoment. Därigenom kan livet anpassas till sadelfackverksbalkar eller andra balkar där flänsarna i över- och underkant inte är parallella.In order to allow the manufacture of beam webs with different heights, the punching device is preferably arranged so that the distance between the recesses in the strip can be adjusted. The adjusting device is designed so that this distance can be varied between successive punching moments. Thereby, the life can be adapted to saddle truss beams or other beams where the flanges in the upper and lower edge are not parallel.

Genom uppfinningen åstadkommes således ett livelement. som ger möjlighet att använda samma grundelement för att uppbygga en stor mängd olika fackverksliv. Samtidigt ger uppbyggnaden av elementet möjlighet till att medelst relativt enkel reglerut- rustning variera sådana parametrar hos livelementet som höjd och bredd. Således medges att med samma produktionsutrustning åstadkomma samverkande livelement, som individuellt kan anpas- 461 075 sas till en betydande mängd belastningsfall för fackverksliv.The invention thus provides a live element. which provides the opportunity to use the same basic elements to build a large number of different truss life. At the same time, the construction of the element makes it possible to vary such parameters of the live element as height and width by means of relatively simple control equipment. Thus, with the same production equipment, it is allowed to provide cooperating web elements, which can be individually adapted to a significant amount of load cases for truss life.

Olika modifieringar av uppbyggnaden av det uppfinningsenliga livelementet är naturligtvis möjliga inom ramen för uppfin- ningen. speciellt med avseende på díagonalstegarnas tvär- snittsprofíl. Uppfinníngen skall därför endast begränsas av innehållet i bifogade patentkrav.Various modifications of the construction of the living element according to the invention are of course possible within the scope of the invention. especially with respect to the cross-sectional profile of the diagonal ladders. The invention is therefore to be limited only by the content of the appended claims.

Claims (6)

461 075 Patentkrav461,075 Patent claims 1. Element för uppbyggnad av fackverksliv till balkar. vilket utgöres av en kontinuerlig längd av böjligt bandmaterial boc- kad till sågtandsform så att spetsarna (3). som förbinder två angränsande diagonalstag (1,2) hos bandmaterialet. vilka till- sammans bildar en sâgtand i räckan av sâgtänder, är plana och utsidorna hos två angränsande diagonalstag. vilka utsidor ut- gör en kontinuerlig fortsättning av spetsarnas banddelar. lig- ger i tvâ parallella plan. vilka är vinkelräta not de plana spetsarnas plan och ligger på ömse sidor om spetsarna, k ä n n e t e c k n a t av att diagonalstagen har ett tvär- snitt i form av en hattprofil. dvs en central del (4) i form av ett U, vílkets skänklar avslutas av utåtriktade flänsar el- ler brâtten (5), och att skänklarna har ett sådant djup att de mot varandra vettande ytorna hos brättena (5) tangerar ett plan. som ligger mitt emellan de två parallella plan. i vilka diagonalstagens utsidor sträcker sig.Elements for building truss life into beams. which consists of a continuous length of flexible strip material bent into a sawtooth shape so that the tips (3). connecting two adjacent diagonal struts (1,2) of the strip material. which together form a sawtooth in the row of sawtooths, are flat and the outsides of two adjacent diagonal struts. which outer sides constitute a continuous continuation of the strip parts of the tips. lies in two parallel planes. which are perpendicular to the plane of the flat tips and lie on either side of the tips, are known from the fact that the diagonal struts have a cross-section in the form of a hat profile. i.e. a central part (4) in the form of a U, the legs of which are terminated by outwardly directed flanges or the ridge (5), and that the legs have such a depth that the facing surfaces of the rims (5) touch a plane. which lies midway between the two parallel planes. in which the outer sides of the diagonal struts extend. 2. Element enligt krav l. k å n n e t e c k n a t av att de plana banddelar (3). som bildar spetsarna hos elementet. löper i en sned riktning relativt elementets längsriktning, varvid den spetsiga vinkel (a). som bildas mellan banddelarnas (3) löpriktning och elementets längsriktníng. är lika med den spetsiga vinkel. som bildas mellan resp diagonalstags (1,2) löpriktning och spetsarnas plan.Element according to Claim 1, characterized in that the flat belt parts (3). which form the tips of the element. runs in an oblique direction relative to the longitudinal direction of the element, the acute angle (a). which is formed between the running direction of the belt parts (3) and the longitudinal direction of the element. is equal to the acute angle. which is formed between the running direction of the respective diagonal struts (1,2) and the plane of the tips. 3. Element enligt krav 2. k ä n n e t e c k n a t av att nämnda spetsiga vinkel (a) är lika med 45°.Element according to claim 2, characterized in that said acute angle (α) is equal to 45 °. 4. Förfarande för att tillverka livelement enligt kraven l-3. k ä n n e t e c k n a t av att det innefattar följande steg: 7 461 075 - från en bandrulle avlindat bandmaterial föres genom en stansapparat. i vilken urtagningar utstansas på förutbestämda avstånd från varandra så att en central parallellogramformad banddel återstår av bandet i resp urtagningsområde, - det stansade bandet föres därefter igenom en rullformnings- anordning. i vilken bandet bockas så att de mellan urtagnin- garna liggande banddelarna profileras till hattprofilformigt tvärsnitt. - det rullformade bandet föres därefter igenom en tvärbock- ningsanordning. i vilken bandet bockas 90° utefter tvâ paral- lella linjer på de centrala banddelarna. vilka bockningslinjer lutar mot bandets löpriktning.Method for manufacturing live elements according to claims 1-3. characterized in that it comprises the following steps: 7 461 075 - strip material wound from a strip roll is passed through a punching apparatus. in which recesses are punched out at predetermined distances from each other so that a central parallelogram-shaped strip part remains of the strip in the respective recess area, the punched strip is then passed through a roll-forming device. in which the band is bent so that the band parts lying between the recesses are profiled to a hat-profile cross-section. the roll-shaped belt is then passed through a cross-bending device. in which the belt is bent 90 ° along two parallel lines on the central belt parts. which bending lines slope towards the running direction of the belt. 5. Förfarande enligt krav 4. k ä n n e t e c k n a t av att avstånden mellan urtagen varieras mellan efter varandra föl- jande stansmoment för att erhålla livelement med varierande höjd utefter sin längdutsträckning.5. A method according to claim 4, characterized in that the distances between the recesses are varied between successive punching moments in order to obtain live elements with varying height according to their length extension. 6. Balklív, k ä n n e t e c k n a t av att det uppbyggt av två eller flera livelement, vilka vardera utgöres av en kon- tinuerlig längd av böjligt bandmaterial bockad till sågtand- form så att spetsarna. som förbinder två angränsande diagonal- stag hos bandmaterialet. vilka tillsammans bildar en sågtand i räckan av sågtänder. är plana. utsidorna hos två angränsande diagonalstag. vilkas utsidor utgör en kontinuerlig fortsätt- ning av spetsarnas banddelar. ligger i två parallella plan. vilka är vinkelräta mot de plana spetsarnas plan och ligger på ömse sidor om spetsarna, och diagonalstagen har ett tvärsnitt i form av en hattprofil, dvs. en central del i form av ett U. vilkets skänklar avslutas av utåtriktade flänsar eller bråt- ten. varvid skänklarna har ett sådant djup att de mot varandra vettande ytorna hos brättena tangerar ett plan. som ligger mittemellan de två parallella plan, i vilka diagonalstagens utsidor sträcker sig. vilka livelement är inträdda i varandra och inbördes förskjutna i längsled och mot varandra anliggande delar nos livelementen är förbundna med varandra.6. Beam glue, characterized in that it is built up of two or more web elements, each of which consists of a continuous length of flexible strip material bent into a sawtooth shape so that the tips. which connects two adjacent diagonal struts of the strip material. which together form a sawtooth in the row of sawtooths. are flat. the outsides of two adjacent diagonal struts. whose outsides constitute a continuous continuation of the band parts of the tips. located in two parallel planes. which are perpendicular to the plane of the flat tips and lie on either side of the tips, and the diagonal struts have a cross section in the form of a hat profile, i.e. a central part in the form of a U. the legs of which are terminated by outwardly directed flanges or bristles. wherein the legs have such a depth that the facing surfaces of the boards touch a plane. which lies between the two parallel planes, in which the outsides of the diagonal struts extend. which life elements are interposed and mutually offset in longitudinal direction and abutting parts nos the life elements are connected to each other.
SE8704679A 1987-11-25 1987-11-25 ELEMENTS FOR THE BUILDING OF TRAFFIC LIFE FOR BALMS AND PROCEDURES FOR THE MANUFACTURE OF ANY SUCH ELEMENT AND BALM LIFE BUILT BY TWO OR MORE SUCH ELEMENTS SE461075B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE8704679A SE461075B (en) 1987-11-25 1987-11-25 ELEMENTS FOR THE BUILDING OF TRAFFIC LIFE FOR BALMS AND PROCEDURES FOR THE MANUFACTURE OF ANY SUCH ELEMENT AND BALM LIFE BUILT BY TWO OR MORE SUCH ELEMENTS
EP88850397A EP0318450A1 (en) 1987-11-25 1988-11-18 An element for the construction of lattice webs for girders and like structural members, and a method for manufacturing such an element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8704679A SE461075B (en) 1987-11-25 1987-11-25 ELEMENTS FOR THE BUILDING OF TRAFFIC LIFE FOR BALMS AND PROCEDURES FOR THE MANUFACTURE OF ANY SUCH ELEMENT AND BALM LIFE BUILT BY TWO OR MORE SUCH ELEMENTS

Publications (3)

Publication Number Publication Date
SE8704679D0 SE8704679D0 (en) 1987-11-25
SE8704679L SE8704679L (en) 1989-05-26
SE461075B true SE461075B (en) 1990-01-08

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SE8704679A SE461075B (en) 1987-11-25 1987-11-25 ELEMENTS FOR THE BUILDING OF TRAFFIC LIFE FOR BALMS AND PROCEDURES FOR THE MANUFACTURE OF ANY SUCH ELEMENT AND BALM LIFE BUILT BY TWO OR MORE SUCH ELEMENTS

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Publication number Priority date Publication date Assignee Title
WO2001086088A1 (en) * 2000-05-09 2001-11-15 AL KARIM CONTRACTING (Australia) PTY LTD A method of forming a web for a structural member
AUPR228400A0 (en) * 2000-12-28 2001-01-25 Bhp Steel (Jla) Pty Limited Metal roof truss
NL2025847B1 (en) * 2020-06-17 2022-02-22 Staco Holding B V A grate comprising at least one structural element

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2066388A (en) * 1932-09-17 1937-01-05 Firm Edward G Budd Mfg Company Construction of metal girders
GB493635A (en) * 1937-04-29 1938-10-12 Lewis Construction Company Ltd Improvements in and relating to metal structures
US2171673A (en) * 1938-02-11 1939-09-05 Soule Steel Company Truss construction
FR1176026A (en) * 1957-06-14 1959-04-03 Profil Sa Ind Financ Le Construction beam
US3740917A (en) * 1971-10-20 1973-06-26 Reynolds Metals Co Structural assembly and method of making same
US3826057A (en) * 1972-01-03 1974-07-30 J Franklin Truss system
US4291515A (en) * 1978-11-07 1981-09-29 John Lysaght International Holdings S.A. Structural elements

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Publication number Publication date
SE8704679D0 (en) 1987-11-25
EP0318450A1 (en) 1989-05-31
SE8704679L (en) 1989-05-26

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