Calculate safe working loads, center of gravity, and lifting equipment requirements for material handling operations.
1. Load Information: Enter weight and dimensions of the load.
2. Equipment Selection: Select the lifting equipment to be used.
3. Lifting Configuration: Enter lifting angle, number of slings, and safety factor.
4. Calculation: The calculator determines SWL, load distribution, and safety requirements.
| Lift Type | SWL Formula | Safety Factor | Standard |
|---|---|---|---|
| Single Vertical | SWL = WLL | 5:1 minimum | ASME B30.9 |
| Two-Leg Bridle | SWL = 2 × WLL × cos(θ/2) | 5:1 minimum | ASME B30.9 |
| Three-Leg Triangle | SWL = 3 × WLL × load factor | 5:1 minimum | ASME B30.9 |
| Four-Leg Quad | SWL = 3 × WLL (assumes 3 legs carry load) | 5:1 minimum | ASME B30.9 |
| Critical Lift | SWL = WLL / 10 | 10:1 minimum | OSHA 1926.1431 |