The gantry girder is a component of an overhead crane that supports the bridge and trolley. It experiences vertical, lateral, and longitudinal loads from these components as well as impact loads. The document discusses the sections used for gantry girders and factors like limiting deflection that are considered in their design.

1. Gantry Girder

5. Component of Gantry Girder
• Crane bridge
• Rail
• Trolley (Crab)
• Gantry girder

6. Section used as Gantry Girder

7. Load on Gantry Girder
•Vertical Loads
•Lateral Loads
•Longitudinal Loads
•Impact Loads.

8. Impact Loads

9. Limiting Deflection