Expert/source verification requiredEdition-dependent or normative details must be confirmed against the adopted standard and National Annex before project use.
Strong-column/weak-beamShear protectionMechanism selectionSystem compatibility
Learning objectives
In this lesson
- Mechanism selection is a building-level task.
- Protect joints, columns and shear consistently.
Engineering explanation
For a multi-storey RC frame, distributed beam yielding is generally preferable to a storey mechanism dominated by column hinges. Sketch candidate beam-end hinges, review base regions and identify joints, columns and shear modes to protect. Then test whether wall interaction, vertical irregularity or foundation response could redirect the mechanism. Numerical hierarchy checks require the exact applicable provisions; the lesson emphasizes the engineering reasoning that precedes them.
Key takeaways
What to carry forward
- Mechanism selection is a building-level task.
- Protect joints, columns and shear consistently.
- Recheck mechanisms when interactions change.