Cross-section Twisting about its own Axis in RFEM 6 or RSTAB 9

Utilizing the Steel Design Add-on, steel design is possible according to the AISC 360-22 standard. The following article will compare the result output when calculating lateral torsional buckling according to Chapter F vs. an Eigenvalue Analysis.

The evaluation of story drift in a building is crucial to ensure acceptable structural performance by limiting the drift amount. Excessive drift has the potential to induce system instability and may cause damage to nonstructural components such as partitions. This article outlines the procedure for establishing interstory drift according to ASCE 7-22 and the Building Model add-on in RFEM 6.

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/t_w) ratio, transverse stiffeners may be required to stiffen the slender web.

For the "Load Transfer" surface stiffness type, there are curved geometries available, such as "Quadrangle", "NURBS", and "Rotation", in addition to the "Plane" and "Pipe" geometry types.

The "Create surface cells due to openings" option is available to you in the surface shortcut menu. It allows you to easily create the lines for the columns of timber panel walls (using the "Beam Panel" thickness type), for example.

In the "Import Support Reaction" load wizard, the "Free Loads" object connection type is available in addition to the "Manual" ones. This option saves you the task of manually assigning the support reactions to specific nodes and lines. The support forces of the connected model are applied as free loads in the case of this option.