What is the main support structure for an overhead gantry?

What is the main support structure for an overhead gantry?

• A. Bridge
• B. Rail Car
• C. Bridge Girder
• D. Column

Answer: (C)

The main support structure is the bridge girder—the primary horizontal beam that spans between the gantry legs and carries the hoist and trolley. This member receives the load from the hoist assembly and distributes it along the span to the supporting columns or rails at the ends. The gantry’s vertical legs provide the vertical support, but they’re the supports for the horizontal bridge girder, which is the crucial load-bearing element of an overhead gantry. The other options aren’t the main load-carrying component: columns are the supporting legs, while the term “bridge” refers to the overall horizontal assembly, and a rail car isn’t part of this structure.

The main support structure is the bridge girder—the primary horizontal beam that spans between the gantry legs and carries the hoist and trolley. This member receives the load from the hoist assembly and distributes it along the span to the supporting columns or rails at the ends. The gantry’s vertical legs provide the vertical support, but they’re the supports for the horizontal bridge girder, which is the crucial load-bearing element of an overhead gantry. The other options aren’t the main load-carrying component: columns are the supporting legs, while the term “bridge” refers to the overall horizontal assembly, and a rail car isn’t part of this structure.