The yield stress relieved in wires is about _______

The electrical devices are commonly used for tensioning of _______

The Hoyer’s system of prestressing proves to be economical for _______

In post tensioning, the concrete units are cast by _______

The drawback of Lee-McCall system is it cannot use _______

Hoyer’s system of pre tensioning is generally adopted for _______

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

In Freyssinet system which element behaves as a guide?