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

In thermo electric pre stressing, heating the bars is done to a temperature of _______

When the concrete attains sufficient strength, which elements are released?

Which system of prestressing is widely used in India?

In which place thermo electric pre stressing found to be more economical?

The Hoyer’s method of prestressing is done by _______

The cables are formed by arrangement of wires or strands in _______

The chemical pre stressing is generally suited for elements like _______