Opening Geometry | Collapse Load (kN) | Difference in Strength (%) | |
Beam without Stiffeners | Beam with Stiffeners | ||
Rectangular | 206.07 | 648.48 | 214.7 |
Square | 434.06 | 906.64 | 108.9 |
Circular | 1.034.85 | 1.238.76 | 19.7 |