Vertical post-tensioning is used to achieve lateral stability by vertically stabilising the core of a structure, resisting horizontal loads and uplift loads, and providing robustness at the connection of precast vertical elements. Increasing the overall stiffness of a vertical element can prove highly effective in seismic or wind-prone areas. Its increased rigidity delivers enhanced crack resistance, allowing the use of uncracked sectional stiffness.
Because of the post-tensioning benefits, the thickness or column dimensions and the amount of reinforcement can be reduced. Such reduction leads to higher usable and sellable space due to slimmer vertical elements. As a proportion of the vertical reinforcement is replaced with high-strength steel strand, congestion and placement within the vertical element are reduced. Ideal for applications with variable wall geometry, vertical post-tensioning can reduce the size and number of supporting walls, creating a more flexible layout.
