The method of pre stressing by heated tendons, achieved by passing an electric current is known as _______

The chemical pre stressing is also called as _______

The drawback of Lee-McCall system is it cannot use _______

In Freyssinet system which element behaves as a guide?

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

The method of tensioning Magnel-Balton system involves _______

The tendons in the pretensioning system are tensioned between _______

In post tensioning, the concrete units are cast by _______