# Civil Engineering - Steel Structure Design

### Exercise :: Steel Structure Design - Section 1

11.

If the moment of inertia of a section about its axis is I and its effective sectional area is A, its radius of gyration r about the axis, is

 A. B. C. D. E.

Explanation:

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12.

The critical load for a column of length I hinged at both ends and having flexural rigidity El, is given by

 A. B. C. D. none of these

Explanation:

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13.

Slenderness ratio of a compression member is

 A. B. C. D. E.

Explanation:

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14.

Pick up the correct statement from the following:

 A. Vertical stiffeners may be placed in pairs one on each side of the web B. Single vertical stiffeners may be placed alternately on opposite sides of the web C. Horizontal stiffeners may be placed in pairs one on each side of the web D. Horizontal stiffeners may be placed alternately on opposite sides of the web E. All the above.

Explanation:

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15.

A structural member subjected to compressive stress in a direction parallel to its longitudinal axis, is generally known as

 A. column B. stanchion C. post D. strut E. all the above.