The design of lifting lugs is critical to ensure the safe lifting and handling of heavy equipment, tanks, or structural components. Lifting lugs are subjected to significant stresses during hoisting operations, and the integrity of their weld connections is paramount. This Excel sheet simplifies the design of welds for lifting lugs, ensuring compliance with standard engineering practices and safety requirements.
What Is a Lifting Lug?
A lifting lug (also called a lifting eye or padeye) is a steel plate welded or bolted to a structure or piece of equipment to provide a attachment point for rigging during lifting operations. They are used extensively in the construction, petrochemical, offshore, and manufacturing industries. A properly designed lifting lug must resist the full dynamic load imposed by the lift, including any dynamic amplification factor (DAF) or sling angle effects.
Forces Acting on a Lifting Lug Weld
The weld connecting a lifting lug to the parent structure is subject to combined loading:
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