In post tensioning, the concrete units are cast by _______

After the tensioning operation, the space between the tendons and the ducts are _______

The transfer of prestress of concrete is achieved by _______

The hydraulic jacks are the simplest and most widely used devices for providing prestress of _______

The tensile stresses developed in steel by the expansion of concrete are about _______

The method of chemical pre stressing is not suited for _______

In Lee-McCall system, the prestressing tendons are in the form of _______

The long span decks are fabricated by _______