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Determine the axial defromation in mm of the middle post when the outer posts have axial stresses equal to the allowable compressive stress of 20 MPa. (2 decimals)

Determine the axial defromation in mm of the middle post when the outer posts have axial stresses equal to the allowable compressive stress of 20 MPa. (2 decimals)

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A rigid steel plate is supported by three posts of high-strength concrete each having an effective cross-sectional area A = 40,000 mm2 and length L = 2 m (see figure). Before %3D the load P is applied, the middle post is shorter than the others by an amount s = 1.0 mm. The allowable compressive stress in the concrete is 20 MPa and E of concrete is 30 GPa. Determine the axial defromation in mm of the middle post when the outer posts have axial stresses equal to the allowable compressive stress of 20 MPa. (2 decimals) S
Transcribed Image Text:A rigid steel plate is supported by three posts of high-strength concrete each having an effective cross-sectional area A = 40,000 mm2 and length L = 2 m (see figure). Before %3D the load P is applied, the middle post is shorter than the others by an amount s = 1.0 mm. The allowable compressive stress in the concrete is 20 MPa and E of concrete is 30 GPa. Determine the axial defromation in mm of the middle post when the outer posts have axial stresses equal to the allowable compressive stress of 20 MPa. (2 decimals) S
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