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

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

The yield stress relieved in wires is about _______

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

The long span decks are fabricated by _______

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

The tendons in the pretensioning system are tensioned between _______

The bond of prestressing wires in Hoyer’s system can be formed by _______