This table is for use as a guide only and is based on
- Approximated breaking strengths of knotted rope (11mm - 20kN, 12.5mm - 28kN)
- A safety factor of 10:1
- Gravity at 10m/s²
11mm & 12.5mm rescue rope
12.5mm rescue rope
Overload (all ropes)
| Slope Angle | Force | |||
|---|---|---|---|---|
| 2kN (2 people) |
3kN (3 people) |
4kN (4 people) |
5kN (5 people) |
|
| 10° | 0.35 | 0.52 | 0.69 | 0.87 |
| 20° | 0.68 | 1.02 | 1.37 | 1.71 |
| 30° | 1.00 | 1.50 | 2.00 | 2.50 |
| 40° | 1.29 | 1.93 | 2.57 | 3.21 |
| 50° | 1.53 | 2.29 | 3.06 | 3.83 |
| 60° | 1.73 | 2.59 | 3.46 | 4.33 |
| 70° | 1.87 | 2.82 | 3.76 | 4.70 |
| 80° | 1.96 | 2.96 | 3.94 | 4.92 |
| 90° | 2.00 | 3.00 | 4.00 | 5.00 |