31. The spans were cast in place, using extensive reinforcing, with post-tensioned cable tendons. 32. Force is then transferred back to the healthy bone through the bottom ring and the tensioned wires. 33. Both mobile and permanently installed pull-down screens may be of tensioned or not tensioned variety. 34. Both mobile and permanently installed pull-down screens may be of tensioned or not tensioned variety. 35. The 1985 bridge is of a twin post-tensioned prestressed concrete type in a continuous span. 36. The deck consists of 196 precast post-tensioned trapezoidal box girder segments, each typically long. 37. A tensioned but flexible belt vibrates by the passing flow of air, due to aeroelastic flutter. 38. The structure is post-tensioned concrete construction and white Georgia marble as stipulated by the donor. 39. The rim of the Eye is supported by tensioned steel cables and resembles a huge spoked bicycle wheel. 40. For medium and high speeds, the wires are generally tensioned by weights or occasionally by hydraulic tensioners.
