Application of Pre- and Post-tensioned Concrete. The general rule of thumb is that pretensioned beams are utilized for short spans and posttensioned beams for longer, more complicated spans. For short spans with simple alignment and clearance constraints, the pretensioned beam offers a straightforward, economical solution.

Larger spans, however, which can be cast in place at or near the project site, are better suited to posttensioning. Another advantage of posttensioned construction is that the tendons can be placed on nonlinear paths (something that is very difficult to do when the beam is pretensioned). Thus, when complicated overpass alignment geometries are present, posttensioning is the preferred approach.

For more information about Precast - Posttension concrete Please see our bridges section on same

Esolution has completed range of bridges in same fashion in Saudi Arabia and Egypt, however solution is not limited only to bridges and can be used into industrial construction for roof Rafters ( long span beams support concrete or steel structures up to 35 meters )