The use of prestressed concrete in Europe and United states spread rapidly from?

The overall economy in using prestressed concrete reduces?

The classification of prestressed concrete is based on the method of _______

In 1907, the losses of prestress due to elastic shortening of concrete was developed by _______

In reinforced concrete members, the prestress commonly introduced is _______

The significant observations which resulted from the pioneering research on prestressed concrete were _______

Development of early cracks in reinforced concrete is due to _______

The prestressing members have better ability of absorbing energy when the structures are subjected to _______