• Before a post-tension slab is poured, high-strength steel strands or cables, called tendons, are laid in a tight grid. These help support and give strength to the slab once the concrete has been cured and they have been tensioned at the proper pressure.

  • Advantages of post-tensioned slab systems:

    DSE slabs bring unique architectural freedom when compared to conventional building methods.

    They allow increased spans to be achieved with thinner concrete sections. By reducing the need for columns the structure becomes more efficient and functional.

    These advantages can result in significant savings in overall costs. There are also some situations where the height of the building is limited, in which the reduced story height has allowed additional floors to be constructed within the building envelope. The following figures 1 and 2 below show the deflection of the slab before the post-tension forces were applied. The finite element analysis is done using Ram Concept.


    Applications

    The use of post-tensioned slab systems has been consistently growing in the recent years.

    Typical applications have been:

    Private residential housing

    Offices

    Car parks

    Shopping centers

    Hospitals

    Hotels and apartments

    Industrial buildings

    Transverse pre-stressing of bridge deck slabs

     

     

     

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