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

The suitability of post tensioning is good for _______

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

The electrical devices are commonly used for tensioning of _______

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

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

The method of pre stressing by heated tendons, achieved by passing an electric current is known as _______

Which of the following is a disadvantage of Freyssinet system?