What is the minimum safety factor for minimum breaking strength (MBS) in rigging?

The minimum safety factor for minimum breaking strength (MBS) in rigging is typically established as 5. This means that the MBS of rigging equipment—such as slings, shackles, and other components—should be at least five times the maximum load that will be applied to them during use.

This safety factor is critical in ensuring that rigging systems maintain integrity under potential dynamic loads, which could be much higher than static loads due to factors like sudden movements or environmental conditions. Using a safety factor of 5 provides a margin of protection, ensuring that even if unexpected stresses arise, the rigging will not fail easily.

Employing an appropriate safety factor is a fundamental aspect of ensuring safe lifting operations in construction, industrial settings, and other environments where rigging is employed.