upper part of the beam
lower part of the beam
center
anywhere
Long line method
Freyssinet system
Magnel-Blaton system
Lee-Macall system
The loss of prestress is more in pre-tensioning system than in post-tensioning system.
Pretensioning system has greater certainty about its durability.
For heavy loads and large spans in buildings or bridges, post-tensioning system is cheaper than pretensioning system
none of the above
elastic shortening of concrete
shrinkage of concrete
creep of concrete
loss due to friction
only in post-tensioned beams
only in pretensioned beams
in both post-tensioned and preten-sioned beams