The distortion principle of statically indeterminate structures is subjected by _______

Which of the following basic concept is involved in the analysis of prestressed concrete members?

In pre-tensioning system, after curing and hardening of concrete the reinforcement is set _______

The attempt to introduce permanently acting forces in concrete to resist the elastic forces is _______

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

The phenomena of reduction of stress in steel at a constant strain are known as _______

In 1886, Jackson of San Francisco applied for a patent in which prestress was introduced by _______

In the zone of anchorages the material preferred to minimize costs is _______