Steel rebar | Bond length (mm) | Concrete cover (mm) | Max. load (kN) | Bond stress (MPa) | Rebar stress (MPa) |
D10 | 9.5 9.5 9.5 19 28.5 28.5 28.5 | 9.5 19 45 19 9.5 19 45 | 20.7 21.3 21.6 41 42.3 41.2 44.4 | 72.9 75 76.2 72.3 49.7 48.4 52.2 | 292 300.5 304.7 578.4 596.8 581.2 626.4 |
D13 | 12.7 12.7 12.7 19.05 25.4 25.4 25.4 38.1 38.1 38.1 | 12.7 25.4 69 69 69 69 25.4 12.7 25.4 69 | 39.7 51.8 46.9 39.8 39.9 46.2 69.1 67.6 71 68.4 | 78.4 102.2 92.5 52.3 39.3 45.6 72.6 44.5 46.7 45 | 313.4 408.9 370.2 314.1 314.9 364.7 545.5 533.6 560.5 540 |
D16 | 15.9 15.9 15.9 31.8 47.7 47.7 47.7 | 15.9 31.8 67 31.8 15.9 31.8 67 | 36.1 50.7 56 100.4 109.1 111.6 116.3 | 45.4 63.8 70.5 63.2 45.8 47 48.8 | 181.8 255.3 282 505.6 549.5 562.1 585.7 |
D19 | 19.1 19.1 19.1 19.1 19.1 28.65 28.65 38.2 38.2 38.2 57.3 57.3 57.3 | 19.1 38.2 65.5 65.5 90 65.5 65.5 38.1 65.5 65.5 19.1 38.2 90 | 82.7 102 66.1 86.36 99.8 116.4 108.6 140 132.5 131.1 60.4 146.2 150 | 72.1 89.4 57.7 75.4 87.1 67.7 63.1 60.9 57.8 57.2 17.6 42.5 43.6 | 288.6 356 212.6 277.8 348.3 374.4 349.2 488.6 426.1 421.7 210.8 510.3 523.5 |
D22 | 22.2 22.2 22.2 44.4 66.6 66.6 | 22.2 44.4 89 44.4 22.2 44.4 | 87.5 104.6 121.2 173.7 168.5 206.4 | 56.3 67.1 78.2 56.8 36.3 44.5 | 226.1 270.2 313.1 448.7 435.3 533.2 |