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The first, and thus far unique, cell-spar platform was Kerr-McGee's Red Hawk spar (7 ea. 8 m (26 ft) diameter cells). [6] Field-depletion occurred 4 years after production started, so Red Hawk was decommissioned in 2014 under the Bureau of Safety and Environmental Enforcement 's " Rigs-to-Reefs " program, at which time it was the deepest ...
The Braga Bridge is a continuous truss bridge. It was the fourth longest span of this type when it was completed in 1966. This list of continuous bridge spans ranks the world's continuous truss bridges in two listings: The first is ranked by the length of main span (the longest length of unsupported roadway) and the second by the total length of continuous truss spans.
A cantilever spar cable-stayed bridge is a modern variation of the cable-stayed bridge.This design has been pioneered by the structural engineer Santiago Calatrava in 1992 with the Puente del Alamillo in Seville, Spain.
Most trusses have the lower chord under tension and the upper chord under compression. In a cantilever truss the situation is reversed, at least over a portion of the span. The typical cantilever truss bridge is a "balanced cantilever", which enables the construction to proceed outward from a central vertical spar in each direction.
The spar was upended in the fjord, after which the topsides were installed using the floatover technique. It was then towed vertically to the Aasta Hansteen gas field 300 kilometres (190 mi) off Bodø at the northwest coast of Norway. The spar is moored north of the Arctic Circle using polyester moorings to the seabed 1,200 metres (3,900 ft) below.
A continuous truss bridge is a truss bridge that extends without hinges or joints across three or more supports. A continuous truss bridge may use less material than a series of simple trusses because a continuous truss distributes live loads across all the spans; in a series of simple trusses, each truss must be capable of supporting the ...
A side-spar cable-stayed bridge may be an otherwise conventional cable-stayed bridge, but its cable support does not span the roadway, and is instead cantilevered from one side. The Esplanade Riel illustrated is located in Winnipeg, Manitoba, Canada. [1] This bridge is intended for pedestrian use only and has a restaurant in its base.
A truss is an assembly of members such as beams, connected by nodes, that creates a rigid structure. [1] In engineering, a truss is a structure that "consists of two-force members only, where the members are organized so that the assemblage as a whole behaves as a single object". [2]