According to 29 CFR 1926.751, Steel Erection, what is the capacity limitation that separates a standard lift from a critical lift?

According to 29 CFR 1926.751, Steel Erection, what is the capacity limitation that separates a standard lift from a critical lift?

• A. 60%
• B. 90%
• C. 75%
• D. 85%

Answer: (C)

In steel erection, a lift becomes a critical lift when the load is at 75% or more of the crane’s rated capacity. That level leaves less margin for dynamic forces, rigging, and maneuvering, so additional planning, supervision, and possibly engineering review are required. Lifts below this threshold use standard procedures, which is why 75% is the defining boundary.

In steel erection, a lift becomes a critical lift when the load is at 75% or more of the crane’s rated capacity. That level leaves less margin for dynamic forces, rigging, and maneuvering, so additional planning, supervision, and possibly engineering review are required. Lifts below this threshold use standard procedures, which is why 75% is the defining boundary.