The losses in prestress in pre-tensioning system are due to :1. elastic deformation of concrete when wires are tensioned successively2. friction3. shrinkage and creep of concreteSelect the correct answer using the codes given below:

The losses in prestress in pre-tensioning system are due to :1. elasti

1.	The losses in prestress in pre-tensioning system are due to :1. elastic deformation of concrete when wires are tensioned successively2. friction3. shrinkage and creep of concreteSelect the correct answer using the codes given below:
A.	1, 2 and 3
B.	2 and 3
C.	1 alone
D.	3 alone
Answer» B. 2 and 3

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The losses in prestress in pre-tensioning system are due to :1. elastic deformation of concrete when wires are tensioned successively2. friction3. shrinkage and creep of concreteSelect the correct answer using the codes given below:

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