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An orthotropic bridge or orthotropic deck is typically one whose fabricated deck consists of a structural steel deck plate stiffened either longitudinally with ribs or transversely, or in both directions. This allows the fabricated deck both to directly bear vehicular loads and to contribute to the bridge structure's overall load-bearing behaviour.
A marlinspike (/ ˈ m ɑːr l ɪ n s p aɪ k /, sometimes spelled marlin spike, marlinespike, or [archaic] marlingspike) is a tool used in marine ropework. Shaped in the form of a narrow metal cone tapered to a rounded or flattened point, it is used in tasks such as unlaying rope for splicing , untying knots , drawing tight using a marlinspike ...