Weight bearing systems and methods relating to same

E - Fixed Constructions – 04 – C

Patent

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Details

E04C 3/02 (2006.01) E04B 1/24 (2006.01) E04B 5/10 (2006.01) E04C 3/09 (2006.01) E04C 3/29 (2006.01) E04C 3/04 (2006.01)

Patent

CA 2361619

The invention is weight bearing elements and methods relating to same. The elements having a web (200), and a chord (100) connected to the web (200), the chord (100) perimeter having a cross-sectional shape of a closed multi-sided figure having at least 5 sides (110, 120A, 120B, 130A, 130B), at least two of which are substantially parallel to the web (200). The chords may have a pentagonal cross sectional shape, some may have load transferring members (400), end-caps (500), stiffened rim bands (800) having die cut tabs (831, 832) and stiffening ribs (840). Other elements comprise one or more pairs of die cut tabs (831, 832) positioned directly opposite each other such that one tab (831) is adjacent the top of the rim band (800) while the corresponding tab (832) is adjacent the bottom of the rim band (800). Some elements may comprise a diamond shape stiffener (840) extruding from the back of the rim band, formed by punching a slot into the back of the rim band (800). The weight bearing elements may be "roll-formed" from a continuous sheet of material.

L'invention concerne des éléments portants et des procédés associés. Certains de ces éléments comportent une âme (200), et une membrure (100) reliée à l'âme(200), le périmètre de la membrure (100) ayant une forme transversale de motif polygonal fermé à cinq côtés (110, 120A, 120B, 130A, 130B), dont au moins deux sont sensiblement parallèles à l'âme (200). Les membrures peuvent avoir une forme transversale pentagonale, et peuvent comprendre des éléments de transfert de charge (400) ou des embouts (500), des rebords renforcés (800) à attaches coupées à l'emporte-pièce (831, 832) et des nervures de durcissement (840). D'autres éléments comprennent au moins une paire d'attaches coupées à l'emporte-pièce (831, 832) placées directement en face l'une de l'autre de façon qu'une attache (831) soit adjacente à la partie supérieure du rebord (800), tandis que l'attache correspondante (832) est adjacente à la partie inférieure du rebord (800). D'autres éléments encore peuvent comporter un raidisseur (840) en forme de losange, saillant de l'arrière du rebord (800), formé par perforation d'une encoche dans l'arrière du rebord (800). Les éléments portants de cette invention peuvent être profilés à partir d'une bande de matière continue.

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