In post tensioning, the concrete units are cast by _______

Which is one of the systems used for pretensioning?

In thermo electric pre stressing, the elongation is observed in case of _______

In pre tensioning system, type of prestressing tendon used is _______

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 _______

The concrete dams are constructed using which?

Which of the following is a disadvantage of Freyssinet system?