Sequence the repair, watch the load path and the utilisation numbers. Quality:
under 90%90-100%over 100%
Experiment 1: smallest steel section for the opening
Sweeps the clear span from 1.2 to 5.4 m with the current loads (roof restored). The full numerical model and the hand formulas pick the lightest IPE section that passes bending, shear, deflection and bearing.