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    Post-stressing is also used in the construction of various bridges, both after concrete is cured after support by falsework and by the assembly of prefabricated sections, as in the segmental bridge.The advantages of this system over unbonded post-tensioning are:

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    In post-tensioning the concrete unit are first cast by incorporating ducts or grooves to house the tendons. When the concrete attains sufficient strength, the high-tensile wires are tensioned by means of jack bearing on the end of the face of the member and anchored by wedge or nuts. ... Direct bearing from the rivet or bolt heads formed at the ...

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    This section specifies the requirements for supply, placing, stressing and grouting of post tensioning systems. Cast in place concrete for post tensioned construction shall comply with the requirements of Section 610 - Structural Concrete.

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