Safe working load at a given radius for a jib crane with triangular stability limit - SWL × radius = constant overturning moment.
Formula
$$ SWL(r) = \frac{SWL_{max} \cdot r_{min}}{r} $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $SWL$ | Safe working load | t | load chart |
| $r$ | Lift radius (jib pin to hook) | m | crane geometry |
Sources
- DNV-ST-0378.