The thermo electric pre stressing, initial stress in tendons ranges between _______

The chemical pre stressing is also called as _______

Which is one of the systems used for pretensioning?

When the concrete attains sufficient strength, which elements are released?

The Freyssinet system of post tensioning anchorages was developed in _______

The long span decks are fabricated by _______

How many types of splicing arrangement are widely used in post tensioning systems?

The transfer of prestress of concrete is achieved by _______