THE_LOSS_OF_PRESTRESS_DUE_TO_SHRINKAGE_IS_OBTAINED_BY_MULTIPLYING:?$ – McqOptions

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1.	THE_LOSS_OF_PRESTRESS_DUE_TO_SHRINKAGE_IS_OBTAINED_BY_MULTIPLYING:?$
A.	Shrinkage strain and modulus of elasticity
B.	Principal stress and durability of concrete
C.	Curing and grade of concrete
D.	Compression and tension
Answer» B. Principal stress and durability of concrete

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THE_LOSS_OF_PRESTRESS_DUE_TO_SHRINKAGE_IS_OBTAINED_BY_MULTIPLYING:?$
A concrete beam is prestressed by a cable carrying an initial prestressing force of 300kn, area is 300mm2. Calculate the percentage of loss of stress due to shrinkage in pretensioned members?$