Tension Increase in Ropes due to Angle
Load capacity loss in a rope, cable or line due to angle
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The increased tension in a rope or cable can be estimated with the table below:
| Rope Angle with Load (degrees) | Increased Tension Factor | |
| α | β | |
| 0 | 90 | 1.000 |
| 5 | 85 | 1.004 |
| 10 | 80 | 1.015 |
| 15 | 75 | 1.035 |
| 20 | 70 | 1.065 |
| 25 | 65 | 1.103 |
| 30 | 60 | 1.155 |
| 35 | 55 | 1.221 |
| 40 | 50 | 1.305 |
| 45 | 45 | 1.414 |
| 50 | 40 | 1.556 |
| 55 | 35 | 1.743 |
| 60 | 30 | 2.000 |
| 65 | 25 | 2.366 |
| 70 | 20 | 2.924 |
| 75 | 15 | 3.864 |
| 80 | 10 | 5.759 |
| 85 | 5 | 11.47 |
With α angle 60 degrees and β angle 30 degrees the tension is increased twice.
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