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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.