21 A rigid steel plate is supported by three posts of high-strength concrete each having aneffective cross-sectional area A = 40,000 mm2 and length L = 2 m (see figure). Before the!D%3Dload P is applied, the middle post is shorter than the others by an amount s =1.0 mm. Theallowable 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 haveaxial stresses equal to the allowable compressive stress of 20 MPa. (2 decimals)

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rigid steel plate is supported by three posts of high-strength concrete each having an ffective cross-sectional area A = 40,000 mm2 and length L = 2 m (see figure). Before the pad P is applied, the middle post is shorter than the others by an amount s llowable compressive stress in the concrete is 20 MPa and E of concrete is 30 GPa. %3D 1.0 mm. The 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)

rigid steel plate is supported by three posts of high-strength concrete each having an ffective cross-sectional area A = 40,000 mm2 and length L = 2 m (see figure). Before the pad P is applied, the middle post is shorter than the others by an amount s llowable compressive stress in the concrete is 20 MPa and E of concrete is 30 GPa. %3D 1.0 mm. The 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)

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter1: Tension, Compression, And Shear

Section: Chapter Questions

Problem 1.8.2P: Truss members supporting a roof are connected to a 26-mm-thick gusset plate by a 22-mm diameter pin,...

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