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parameters.subtitle
| parameters.grade | fck (N/mm²) | fc (N/mm²) | ft (N/mm²) | Ec (×10⁴ N/mm²) |
|---|---|---|---|---|
| C15 | 15 | 7.2 | 1.27 | 2.20 |
| C20 | 20 | 9.6 | 1.54 | 2.55 |
| C25 | 25 | 11.9 | 1.78 | 2.80 |
| C30 | 30 | 14.3 | 2.01 | 3.00 |
| C35 | 35 | 16.7 | 2.2 | 3.15 |
| C40 | 40 | 19.1 | 2.39 | 3.25 |
| C45 | 45 | 21.1 | 2.51 | 3.35 |
| C50 | 50 | 23.1 | 2.64 | 3.45 |
| C55 | 55 | 25.3 | 2.74 | 3.55 |
| C60 | 60 | 27.5 | 2.85 | 3.60 |
| C65 | 65 | 29.7 | 2.93 | 3.65 |
| C70 | 70 | 31.8 | 2.99 | 3.70 |
| C75 | 75 | 33.8 | 3.05 | 3.75 |
| C80 | 80 | 35.9 | 3.11 | 3.80 |