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Classification of Steel Joints by Stiffness
First Steps with RFEM
In the Steel Joints add-on, you can classify the joint stiffnesses.
In addition to the initial stiffness, the table also shows the limit values for pinned and rigid connections for the selected internal forces N, My, and/or Mz. The resulting classification is then displayed in tables as "rigid", "semi-rigid", and "pinned".
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Plate girder is an economical choice for long spans construction. I-section steel plate girder typically has a deep web to maximize its shear capacity and flange separation, yet thin web to minimize the self-weight. Due to its large height-to-thickness (h/tw) ratio, transverse stiffeners may be required to stiffen the slender web.