3.1 – Optimization of Steel Beams and Columns for Variable Rib Configuration

Optimal configuration of stiffening ribs in the steel welded I – beams and columns is studied. A wide class of designs with traditional orthogonal configuration implementing transverse and/or longitudinal ribs is considered and compared with a new configuration with diagonal ribs. The critical load and the total manufacturing cost, composed of costs of steel, cutting and welding are computed for all designs. The configuration with diagonal ribs proved to be more efficient than the traditional ones.