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Based on common structural codes (Eurocode/GB style logic):

The final width is the average strain multiplied by the spacing and a "long-term effect" expansion factor ($\alpha_cr$ or $\tau_s$, usually between 1.5 and 2.0).

$$ w_max = \alpha_cr \cdot \psi \cdot l_cr \cdot \frac\sigma_sqE_s $$

Cracks are spaced relatively evenly after stabilization. This depends on bond strength and cover.

$$ l_cr = 1.9c + 0.08 \fracd_eq\rho_te $$

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5.1 Immediate safety measures

5.2 Repair options by material

  • Timber connections:
  • Composite or aluminum:
  • 5.3 Design changes

    5.4 Long-term corrosion protection and detailing