Index Visitors' Book

The design

Six gate variants were developed:
  • lifting-gate;
  • divided rolling-doors;
  • undivided rolling-door;
  • vizor gate;
  • tilt-up gate;
  • valve variant.
The most important performance requirement of the gates was to reduce the "leakage" through the Europort area. Other positions of the gates, however, also needed to be researched: the elevated position (allowing for windforce-loads and temperature-related contraction and expansion), the "opening" and "closing" positions and various assembly positions. The decision in favour of a lifting-gate was provided by the Hartel Bridge itself with its central pillar and the existing layout of the navigation channel.