A concrete beam is post tensioned by a cable carrying an initial stres – McqOptions

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1.	A concrete beam is post tensioned by a cable carrying an initial stress of 1000n/mm², the slip at the jacking end was end was observed to be 5mm; modulus of elasticity of steel is 210kn/mm². Estimate the percentage loss of stress due to anchorage if length of beam is 30m?
A.	3.5%
B.	4.5%
C.	5.5%
D.	8.7%
Answer» B. 4.5%

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