Topic: Design of Machine Elements
Gantry girders are invariably designed to resist-
- A. Transverse loads only
- B. Lateral loads only
- C. Transverse and lateral loads
- D. Transverse, lateral and axial load
Answer: C. Transverse and lateral loads
Explanation: Gantry girders are used to provide support for overhead travelling cranes. Movement of heavy loads exerts vertical (transverse) load applied by the crane itself. Horizontal (lateral) movements are exerted on the gantry girder by the surge, or acceleration and braking of the crane operation and the swinging of loads. Thus, they are designed to resist both transverse and lateral loads.