Advantages

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Advantages of Post-Tensioned Building Construction

  • Significant reduction in the amount of concrete and reinforcing steel required.
  • Thinner structural members as compared to non-prestressed concrete, resulting in lower overall building heights and reduced foundation loads.
  • Aesthetically pleasing structures that harness the benefits of cast-in-place structures with curved geometries, longer cantilevers and slender members with large spaces between supports.
  • Superior structural integrity as compared to precast concrete construction because of continuous framing and tendon continuity.
  • Monolithic connections between slabs, beams, and columns that can eliminate troublesome joints between elements that require maintenance.
  • Profiled tendons that result in balanced gravity loads (typically a portion of dead load only), significantly reducing total deflection.
  • Better crack control, which results from permanent compressive forces applied to the structure during prestressing.
  • Reduction in overall building mass, which is important in zones of high seismicity.
  • As compared to steel, non-prestressed concrete and precast construction offer faster floor construction cycles, lower floor weight, lower floor-to-floor height, larger spans between columns and reduced foundations.
  • The high early-strength of post-tensioned concrete allows for faster floor construction cycles and the use of standard design details for post-tensioned elements, minimum congestion of prestressed and non-prestressed reinforcement, and earlier stripping of formwork after tendon stressing.

 

 

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