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

In post tensioning, the concrete units are cast by _______

The applied force should be measured accurately in hydraulic devices while?

The Freyssinet system of prestressing involves the arrangement of wires of number?

The commonly used mechanical devices used in the following statement.

The yield stress relieved in wires is about _______

The use of bar tendons with threaded anchorages reduces the possibility of _______

The Freyssinet system of post tensioning anchorages was developed in _______