Crack Full: Midas Civil

Below is the complete workflow you would typically follow in Midas Civil, illustrated with screenshots (conceptual – you’ll have the actual UI in the software).

Result: You will obtain a crack‑width vs. time curve, invaluable for serviceability predictions over a 50‑year design life. midas civil crack full

| Task | Menu Path | Key Settings | |------|-----------|--------------| | Create Concrete Material (CDP) | Material → Concrete → CDP | Set f_c, E_c, ε_t, G_f (fracture energy). | | Add Reinforcement | Model → Reinforcement → Bar Layout | Choose bar size, spacing, cover; enable Tension Stiffening. | | Enable Crack Detection | Analysis → Non‑Linear → Settings → Crack | Tick Automatic Crack Detection, select Maximum Crack Width output. | | Run Time‑Dependent Analysis | Analysis → Creep‑Shrinkage → Define → Solve | Input Age at Loading, Relative Humidity, Temperature Profile. | | Export Crack Map | Post‑Processing → Crack → Export → IFC/CSV | Choose Crack Width and Crack Density properties. | | Check Against Code | Post‑Processing → Crack → Code Check | Pick ACI / EC2 / IS, set limit values, generate compliance report. | Below is the complete workflow you would typically

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| Code | Governing Equation | How Midas Civil Implements | |------|--------------------|----------------------------| | ACI 224R‑14 | w_max = β * (f_s * ρ_s * d) / (E_c) | Uses Mander’s formula automatically when you enable “Crack Width – ACI” option. | | Eurocode 2 (EN 1992‑1‑1) | w_k = (φ / 2) * (σ_s / f_y) * (d / (1 + (ρ_l / ρ_s))) | Choose “EC2 – Crack Width” in post‑processor. | | IS 456:2000 | w_max = (0.1 * d) / (ρ_l) (simplified) | Use “IS 456 – Crack Width” template. |

Tip: Always compare the software‑generated values with the hand‑calculated limits. Small discrepancies (≤ 5 %) are normal due to different rounding or tension‑stiffening assumptions.