11-14-2009, 08:39 PM
Pre Stressed Concrete Structures Notes
info:
A prestressed concrete structure is different from a conventional reinforced concrete
structure due to the application of an initial load on the structure prior to its use.
The initial load or ‘prestress’ is applied to enable the structure to counteract the stresses
arising during its service period.
The prestressing of a structure is not the only instance of prestressing. The concept of
prestressing existed before the applications in concrete. Two examples of prestressing
before the development of prestressed concrete are provided.
Force-fitting of metal bands on wooden barrels
The metal bands induce a state of initial hoop compression, to counteract the hoop
tension caused by filling of liquid in the barrels.
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