Post tensioning is a technique for reinforcing concrete. Use of post-tensioning in buildings achieves substantial benefits for all parties.
Owners benefit from:
- a reduction in materials, structures and their foundations.
- reduced financing costs (due to shorter construction periods).
- more usable space for a given building height.
- reduced structural deflection.
- less maintenance.
Architects benefit from:
- more aesthetic freedom – as cantilevering structures and larger spans allow for larger, column-free spaces.
Contractors benefit from:
- shorter construction periods: post-tensioning allows the formwork to be stripped earlier; therefore reducing cycle times.
- improved constructability (requiring fewer materials to be handled and placed).
- a reduction in structural depth and weight thanks to thinner slabs (as this requires less building materials and reduces the load on the foundation loadings.
- fast and easy installation of electrical, air-conditioning and other services, as post-tensioning permits for the design of a flat soffit and easy access to the under-surface of the floor.