In post tensioning, the concrete units are cast by _______

The electrical devices are commonly used for tensioning of _______

In thermo electric pre stressing, the elongation is observed in case of _______

The linear expansion of the cement in chemical pre stressing is about _______

The method of chemical pre stressing is not suited for _______

The estimation of the current, voltage and power requirements of the transformer are for _______

The period of cooling in thermo electric pre stressing is observed as _______

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