Structural
Eurocode 2 — Crack Width Check
Characteristic crack width wk for an RC section in bending under quasi-permanent loads, per EN 1992-1-1 §7.3.4.
Formula
wk = sr,max · (εsm − εcm)
Section geometry
Reinforcement
Materials & loading
Resultlive
- Effective depth, d
- 252mm
- As (per m)
- 1340.4mm²/m
- Ecm
- 3.2837e+4N/mm²
- αe
- 6.09
- Neutral axis, x
- 56.499mm
- σs
- 191.98N/mm²
- hc,eff
- 81.167mm
- ρp,eff
- 1.651%
- fctm
- 2.8965N/mm²
- εsm − εcm
- 5.759e-4
- sr,max
- 300.71mm
- Crack width, wk
- 0.1732mm
- Check
- PASS (≤ 0.3 mm)
Quasi-permanent load combination is assumed (loads producing wk). The check is for a pure bending RC section with tension steel only.
Reference: EN 1992-1-1:2004 §7.3.4. Recommended limits per Table 7.1N; the water-retaining 0.2 mm limit follows EN 1992-3.