# Civil Engineering - Steel Structure Design

### Exercise :: Steel Structure Design - Section 3

11.

The tensile strength of mild steel for bolts and nuts should not be less than

 A. 32 kg/mm2 B. 36 kg/mm2 C. 40 kg/mm2 D. 44 kg/mm2

Explanation:

No answer description available for this question. Let us discuss.

12.

A riveted joint may experience

 A. shear failure B. shear failure of plates C. bearing failure D. bearing failure of rivets E. all the above.

Explanation:

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13.

With a percentage increase of carbon in steel, decreases its

 A. strength B. hardness C. brittleness D. ductility.

Explanation:

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14.

In a built up beam actual bending compressive stress fbc is given by (when y1 is the distance of the edge of the beam from the neutral axis).

 A. B. C. D. E.

Explanation:

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15.

In double lacing, the thickness t of flat lacing is

 A. t < 1/40 th length between inner end rivets B. t < 1/50 th length between inner end rivets C. t < 1/60 th length between inner end rivets D. t < 1/70 th length between inner end rivets E. none of these.