A rectangular concrete beam of width 120 mm and depth 200 mm is prestressed by pre-tensioning to a force of 150 kN at an eccentricity of 20 mm. The cross-sectional area of the pre-stressing steel is 187.5 mm2. Take modulus of elasticity of steel and concrete as 2.1 x 105 MPa and 3.0 x 104 MPa respectively. The percentage loss of stress in the pre-stressing steel due to elastic deformation of concrete is

Structural Analysis
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ISBN:9781337630931
Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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A rectangular concrete beam of width 120 mm
and depth 200 mm is prestressed by pre-tensioning
to a force of 150 kN at an eccentricity of 20 mm.
The cross-sectional area of the pre-stressing steel
is 187.5 mm2. Take modulus of elasticity of steel
and concrete as 2.1 x 105 MPa and 3.0 x 104
MPa respectively. The percentage loss of stress
in the pre-stressing steel due to elastic deformation
of concrete is
Transcribed Image Text:A rectangular concrete beam of width 120 mm and depth 200 mm is prestressed by pre-tensioning to a force of 150 kN at an eccentricity of 20 mm. The cross-sectional area of the pre-stressing steel is 187.5 mm2. Take modulus of elasticity of steel and concrete as 2.1 x 105 MPa and 3.0 x 104 MPa respectively. The percentage loss of stress in the pre-stressing steel due to elastic deformation of concrete is
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