Post Tensioning

Post-tensioning is a method of replacing reinforcing bars in concrete structures for increased strength and comprises of materials with high strength steel strands or bars, typically referred to as tendons.

Post-tensioning applications include office and apartment buildings, parking structures, slabs-on-ground, bridges, sports stadiums, rock and soil anchors, and water-tanks.

In many cases, post tensioning allows construction that would otherwise be impossible due to either site constraints or architectural requirements. There are post-tensioning applications in almost all facets of construction.

Advantages / Applications of Post-Tensioning Concrete

  • Allows longer clear spans, thinner slabs, fewer beams and more slender, dramatic elements.
  • Allows a reduction in depth of beams, slabs, column and foundation size.
  • Allow a significant reduction in building weight versus a conventional concrete building.
  • This reduces the foundation load and can be a major advantage in seismic areas.
  • Post-tensioning is the system for parking structures since it allows a high degree of flexibility in the column layout, span lengths and ramp configuration.
  • It is structurally efficient over spans greater than 8m.
  • Commercially there are many advantages over traditional reinforced concrete.
  • It is used in extremely long span bridges to be constructed without the use of temporary intermediate supports.
  • In stadiums, post-tensioning allows long clear spans and very creative architecture.
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