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

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

The thermo electric pre stressing is also used in _______

The concrete dams are constructed using which?

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

The tensioning of oval section ribbed wires with an ultimate tensile strength was adopted in _______

The chemical pre stressing is generally suited for elements like _______

The expansion of the concrete is restrained by _______