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Q. |
Which of the following statement is incorrect? |
A. | For columns, the solid round bar is less economical than the turbular section |
B. | The radius of gyration for the tubular section in all directions remains the same |
C. | A tubular section is most economical for the column free to buckle in any direction |
D. | none of the above |
E. | Increasing the diameter of threaded portion |
Answer» D. none of the above |
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