What type of boom design do lattice boom cranes feature?

Lattice boom cranes are characterized by their truss design that consists of interlocking steel sections. This design utilizes a series of interconnected triangles that provide strength and stability while keeping the overall weight of the boom relatively low. The lattice structure allows for high load capacity and effective distribution of forces, making it a durable option for lifting heavy materials in construction and industrial applications.

Unlike a solid beam structure, which may be heavier and less efficient, the truss design maximizes strength-to-weight ratio. The other options are not applicable; for instance, a flexible and adjustable boom typically describes different types of cranes with variable geometry, while hydraulic boom systems involve mechanisms that allow for boom extension and retraction, rather than the inherent structural design found in lattice booms. Hence, the emphasis on the truss design underscores the unique advantages of lattice boom cranes in heavy lifting scenarios.