A prestressed concrete beam, 200mm wide and 300mm deep is prestressed – McqOptions

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1.	A prestressed concrete beam, 200mm wide and 300mm deep is prestressed with wires (area is 320mm2) located at a constant eccentricity of 50mm, initial stress of 1000n/mm2, span is 10m. Calculate loss of stress due to friction and slip anchorage of post tensioned beam?(Es = 210kn/mm2, Ec = 35kn/mm2)$
A.	21 and 15
B.	35 and 25
C.	15 and 20
D.	5 and 10
Answer» B. 35 and 25

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