of Prestressed Concrete
In case of fully prestressed member,
which are free from tensile stresses under working loads.
The cross section is more effectively
utilized when compared with a reinforced concrete section which is cracked
under working loads.
· Within certain limits, a
permanent will be counteracted by increasing the eccentricity of the
prestressing force in a prestressed structural elements, thus effecting saving
in the use of materials.
· Prestressed concrete members possess improved resistance
to shearing forces, due to the effect of compressive prestress, which reduces
the principal tensile stress.
· The use of high
strength concrete and steel in prestressed members results in lighter and
slender members than is possible with reinforced concrete.
· It is free from cracks,
contributes to the improved durability of the structure under aggressive
· The economy of prestressed concrete is well established
for long span structures.
· A prestressed concrete flexural member is stiffer under working
loads than a reinforced concrete member of the same depth.