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

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

Materials Science And Engineering Properties

1st Edition

ISBN:9781111988609

Author:Charles Gilmore

Publisher:Charles Gilmore

Chapter12: Composite Materials

Section: Chapter Questions

Problem 12.7P: Estimate the transverse tensile strength of the concrete in Problem 12.6.

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