A pre tensioned concrete beam 100mm wide and 300mm deep, initial force of 150kn at an eccentricity of 50mm, moment of inertia is 225 106mm4, initial stress in steel is 400n/mm2, modular ratio is 8. Estimate the percentage loss?

A pre tensioned concrete beam 100mm wide and 300mm deep, initial force

1.	A pre tensioned concrete beam 100mm wide and 300mm deep, initial force of 150kn at an eccentricity of 50mm, moment of inertia is 225 106mm4, initial stress in steel is 400n/mm2, modular ratio is 8. Estimate the percentage loss?
A.	10%
B.	5%
C.	14%
D.	20%
Answer» D. 20%

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A pre tensioned concrete beam 100mm wide and 300mm deep, initial force of 150kn at an eccentricity of 50mm, moment of inertia is 225 106mm4, initial stress in steel is 400n/mm2, modular ratio is 8. Estimate the percentage loss?

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