On lattice boom cranes, what is measured from the center line of the boom to the horizontal?

The measurement from the center line of the boom to the horizontal is referred to as the boom angle. This angle is critical in ensuring proper lift capacity and stability of the crane. The boom angle is essential for crane operators to understand, as it affects the load dynamics, including how much weight the crane can safely lift and how far it can reach.

When the boom is raised or lowered, the boom angle changes, which in turn influences the crane's stability and the efficiency of the lift. Operators must monitor this angle closely and adhere to manufacturer specifications and rigging calculations to prevent accidents and ensure safety during operations.

Understanding the boom angle helps operators make informed decisions regarding load handling procedures, contributing to overall safety and operational effectiveness in crane operations.