Application of prestressing with pretension and post-tension in precast beams

In Nowdays, prestressed concrete founds wide application in the construction of engineering structures. Where concrete elements are subjected to mandatory stresses to gain more favorable behaviors. This can be realized by applying prestressing force with system of pre-tension and post-tension.Analysis of precast beams elements with different sections by applying these prestressing methods, will help us to determine which method of force application is going to be more favorable for realization.Analysis of precast beams elements for different shapes of sections for two methods of prestressing, that with pretensioned and post-tension, by checking the basic condition criteria of servisability limit state.