Static structures (e.g. – buildings) – Openwork; e.g. – truss – trellis – grille – screen – frame – or... – Truss with unitary chord and web; e.g. – sheet metal
Patent
1995-02-06
1996-12-31
Canfield, Robert
Static structures (e.g., buildings)
Openwork; e.g., truss, trellis, grille, screen, frame, or...
Truss with unitary chord and web; e.g., sheet metal
526501, 52690, 52693, 527291, 527311, E04C 308
Patent
active
055882730
ABSTRACT:
A structural beam for use in buildings and other structures, and a process of forming the structural beam. The structural beam exhibits the structural advantages of a truss without the high labor costs normally associated with a truss. The beam includes a top flange, a bottom flange, a web joining the top and bottom flanges, and a plurality of apertures located within the web. Top and bottom chords including neutral axes are defined by a respective flange and longitudinally uninterrupted web portion. A plurality of joining members located in the web between the top and bottom chord transmit loading forces generally along diagonal axes. The diagonal axes of adjacent joining members intersect at panel points which are located substantially along the neutral axis of a respective chord. Haunches provide local structural deepenings of the top and bottom chords in the regions of the panel points to locate critical points a safe distance away from the flow of stresses due to loading. The structural beam is formed by longitudinally cutting through a beam along a repetitive pattern to create upper and lower beam sections. vertically separating the beam sections, and affixing the beam sections together to elongate the height of the web and create a beam-truss.
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