Post Tensioning Duct

  

Introduction :
The prestressing steel is housed in sheathing or duct to allow it move as the tensioning force is applied after  the concrete cures .

Applications :
Post-tensioning is a method of reinforcing (strengthening) concrete or other materials with high-strength steel strands or bars, typically referred to as tendons. Post-tensioning applications include ofifce and apartment buildings, parking structures, slabs-on-ground, bridges, sports stadiums, rock and soil anchors, and water-tanks.

Advantages Of Post-Tensioning :
▫ Thinner concrete sections.
▫ Longer spans between supports.
▫ Stiffer walls to resist lateral loads.
▫ Stiffer foundations to resist the effects of shrinking and swelling soils.
▫ Less visible cracks.
▫ Cost saving and time saving.

                           
Round Duct






Flat Duct