Span changes for relocated rail-mounted cranes
For rail-mounted cranes, an increase or decrease in span is necessary when the destination terminal has a different rail gauge. Depending on the amount of span change involved and crane geometry, one or more of the following modifications may be required:
- Portal beam lengthening and reinforcement, and repositioning of the land-side legs
- Additions to leg sections for small span changes
- Additional triangular trusses to enlarge the portal for large span changes
