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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 ...
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]
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.
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.
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"Aerodynamic performance of long span steel truss bridges in Indonesia" (PDF). matec-conferences.org. MATEC Web of Conferences. "Project Reference Catalogue - Bridge Design Services - Cable Stay, Extradosed & Suspension Bridges" (PDF). bdeibig.com. Wiecon Consulting Engineers. "Suspension Bridges of Indonesia". bridgemeister.com.
1998: Kuala Lumpur: Kuala Lumpur [1]2: Langkawi Sky Bridge: Jambatan Udara Langkawi: Curved cable-stayed bridge 660 metres (2,170 ft) above sea level Swiss Steel Design Award 2005
Main spar of a de Havilland DH.60 Moth. In a fixed-wing aircraft, the spar is often the main structural member of the wing, running spanwise at right angles (or thereabouts depending on wing sweep) to the fuselage. The spar carries flight loads and the weight of the wings while on the ground.