Answered: (a) The column shown in Figure Q3 below…

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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(a) The column shown in Figure Q3 below is constructed from high-strength concrete and
six steel reinforcing bars. The Young’s modulii for the steel and concrete are Est = 210
GPa and Econ = 35 GPa respectively.
i. If the column is subjected to an axial force of 175 kN, show that using a bar
diameter of 43.8 mm for the steel bars will result in 40% of the load being carried by
the concrete with the remainder carried by the steel; (12 marks)
ii. Hence, evaluate the axial deformation of the column (5 marks)
iii. Evaluate the average normal stresses in the concrete and in each steel bar
(4 marks)

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