Most LMIs will not indicate which parameter?

• A. Levelness
• B. Load weight
• C. Boom angle
• D. Safety status

Answer: (A)

LMIs are built to monitor lifting safety by tracking weight and the crane’s geometry, then use that information to compute the load moment and warn when limits are approached. They rely on parameters like the load weight and the boom angle (and the corresponding radius) because those determine how much load the setup can safely handle. Levelness, on the other hand, is a property of the crane’s foundation and how evenly it sits on the ground; it’s checked by a separate level indicator or inclinometer and does not feed into the load-moment calculation. Since levelness isn’t needed to assess the lift envelope, most LMIs don’t display whether the crane is perfectly level. The other items—load weight, boom angle, and safety status—are central to what the LMI shows and how it guides safe operation.