• Structural Type: Concrete gravity base structure.
• Function / usage: Gas drilling platform.
• Specifications:
- Weight: 656 000 t.
- Concrete volume: 245 000 m³.
- Reinforcing steel: 100 000 t.
• Chronology:
- July 1991: Construction of the base is begun.
- August 1992: Construction of the deck begins.
- December 1994: Deck is completed.
- 3 January 1995: Deck is floated to the gravity base structure in Ykjesfjorden.
• This project, voted Norway's Engineering project of the 20th Century, is a reinforced concrete Gravity Base structure (GBS) operating over the Norwegian continental shelf. The tube shaped skirt piles are pushed 36m into the soft alluvial deposits while the water surface is another 305m above that.
• The GBS weighs 656,000 (metric) tonnes and consumed over 245,000 cubic metres of concrete and one million kg of reinforcing steel. The total height of the GBS is 369m plus the topsides units above.
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