ATP wins engineering award for graving dock

The graving dock currently containing the hull of the ATP Titan was awarded a gold medal in the Engineering Excellence Award Competition held by the Texas Council of Engineering Companies.

Offshore staff

HOUSTON -- The graving dock currently containing the hull of the ATP Titan was awarded a gold medal in the Engineering Excellence Award Competition held by the Texas Council of Engineering Companies. The Texas Council honors and recognizes outstanding achievements within the engineering community based on uniqueness, originality, technical design, value to the engineering profession, complexity, and how successfully the project met the needs of the client.

ATP says this is the first graving dock for offshore construction in the US. It is being used to fabricate theATP Titan's hull. The graving dock, located at Gulf Marine Fabricators' fabrication yard in South Texas, measures 600 ft (183 m) long by 250 ft (76 m) wide and 40 ft (12 m) deep. It has a reinforced concrete slab floor and sheet pile walls. Around the perimeter, the graving dock has pile supported relieving platforms to take the surcharge load applied by cranes. The south end of the graving dock that opens to the Corpus Christi Ship Channel has a removable sheet piled wall supported by steel struts. When flooded, the graving dock will have a minimum of 30 ft (9m) of water over the concrete floor.

When the hull construction is completed, the graving dock will be flooded and the sheet piles and sand separating the dock from the channel will be removed allowing theATP Titan to float out of the dock and be towed to sea avoiding the need to lift this 18,000-ton (16,329-metric-ton) hull onto a barge and thereby reducing cost from the construction process, according to ATP.

05/14/2009

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