Working Load Limit (WLL)=Minimum Breaking Strength (MBS)Design FactorWorking Load Limit (WLL) equals the fraction with numerator Minimum Breaking Strength (MBS) and denominator Design Factor end-fraction : Usually feature a 5:1 safety factor.
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| Sling Angle (from horizontal) | Sling Angle Factor | | :--- | :--- | | 90° | 1.00 | | 60° | 1.15 | | 45° | 1.41 | | 30° | 2.00 | rigging engineering calculations pdf free download
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Where SAF = 1 / Sine(Angle)
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