Mechanics of materials II 8–38. Since concrete can support little or no tension, thisproblem can be avoided by using wires or rods to prestressthe concrete once it is formed. Consider the simplysupported beam shown, which has a rectangular crosssection of 18 in. by 12 in. If concrete has a specific weight of150 Ib/ft°, determine the required tension in rod AB, whichruns through the beam so that no tensile stress is developedin the concrete at its center section a-a. Neglect the size ofthe rod and any deflection of the beam.16 in.18 in.6 in. 6 in.

Given: TO determine: Tensile stress developed in the concrete beam when normal stress is 0

Answered: runs through the beam so that no…

runs through the beam so that no tensile stress is developed in the concrete at its center section a-a. Neglect the size of the rod and any deflection of the beam.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

Mechanics of materials II

8–38. Since concrete can support little or no tension, this
problem can be avoided by using wires or rods to prestress
the concrete once it is formed. Consider the simply
supported beam shown, which has a rectangular cross
section of 18 in. by 12 in. If concrete has a specific weight of
150 Ib/ft°, determine the required tension in rod AB, which
runs through the beam so that no tensile stress is developed
in the concrete at its center section a-a. Neglect the size of
the rod and any deflection of the beam.
16 in.
18 in.
6 in. 6 in.

Branch of science that deals with the stationary and moving bodies under the influence of forces.

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