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

The degree of expansion can be controlled by varying the conditions of _______

After the tensioning operation, the space between the tendons and the ducts are _______

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

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

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

In Hoyer’s system the projection of plugs left in concrete exceeds beyond _______

Hoyer’s system of pretensioning can be done for beams.