With the rise of BIM and parametric design, CIRIA’s methodology is increasingly being automated. Some engineering firms now script notional removal checks into their analysis software. However, the —why a building is robust—still comes from the principles in C577.
❌ “My software does all this automatically.” ✅ No software can interpret tie forces and notional removal logic—engineering judgement is required. ciria c577
❌ “Robustness means designing for a bomb blast.” ✅ No—it means preventing disproportionate collapse, which is usually achieved with simple tying. With the rise of BIM and parametric design,