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:

  1. Portal beam lengthening and reinforcement, and repositioning of the land-side legs
  2. Additions to leg sections for small span changes
  3. Additional triangular trusses to enlarge the portal for large span changes