# Civil Engineering - Steel Structure Design

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

21.

Web crippling generally occurs at the point where

 A. bending moment is maximum B. shearing force is minimum C. concentrated loads act D. deflection is maximum E. all the above.

Explanation:

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22.

Pick up the incorrect statement from the following:

 A. The nominal diameter of a rivet is its diameter before driving B. The gross diameter of a rivet is the diameter of rivet hole C. The gross area of a rivet is the cross-sectional area of the rivet hole D. The diameter of a rivet hole is equal to the nominal diameter of the rivet plus 1.5 mm E. None of these.

Explanation:

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23.

The allowable stress in axial tension for rolled I-sections and channels, is taken as

 A. 1420 kg/cm2 B. 1500 kg/cm2 C. 2125 kg/cm2 D. 1810 kg/cm2

Explanation:

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24.

When a tension member is made of four angles with a plate as a web, the allowance for holes is made as

 A. two holes for each angle and one hole for the web B. one hole for each angle and one hole for the web C. one hole for each angle and two holes for the web D. two holes for each angle and two holes for the web E. none of these.

Explanation:

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25.

The failure of a web plate takes place by yielding if the ratio of the clear depth to thickness of the web, is less than

 A. 45 B. 55 C. 60 D. 75 E. 82