Holdfast Training Services Trial Blog

As I was walking around site in the beautiful sunshine of Sydney’s first day of “winter” I found myself staring at the PT cables in a new slab and wondering how it actually works. Whilst I fully understand the theory of post tensioning, I was unsure why the cables were is conduit – so my question is: if the the cables are not in contact with the concrete, how do they transfer the tension into the slab?

PT cables in conduits