21. The Poisson's ratio of an orthotropic material is different in each direction ( x, y and z ). 22. Bolshoy Ustinsky bridge was reconstructed in 1999-2000, replacing the roadway deck with an improved, lighter orthotropic type. 23. The roadway lies on top of an orthotropic deck on a steel box girder, which is wide, tall and long. 24. The orthotropic deck may be integral with or supported on a grid of deck framing members such as floor beams and girders. 25. Resistance to use of an orthotropic deck relates mainly to its cost of fabrication, due to the amount of welding involved. 26. The deck is an orthotropic design, which is structurally more efficient than a concrete deck on top of steel deck beams. 27. Welded field connections are used for longitudinal and transversal joints of the cap sheet of the orthotropic deck and lower ribbed plate. 28. The lateral profile of the bridge deck comprises a single box section and an Orthotropic deck inclined at 3.8 %. 29. The Millau Viaduct a cable-stayed bridge of Millau, France has the largest orthotropic steel deck area of any single bridge. 30. This arch deck bridge has an orthotropic deck system with total width which incorporates a two-way carriageway and a walkway at each side.
