# Civil Engineering - RCC Structures Design

### Exercise :: RCC Structures Design - Section 1

36.

If d and n are the effective depth and depth of the neutral axis respectively of a singly reinforced beam, the lever arm of the beam, is

 A. d B. n C. D. E.

Explanation:

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37.

To have pressure wholly compressive under the base of a retaining wall of width b, the resultant of the weight of the wall and the pressure exerted by the retained, earth should have eccentricity not more than

 A. B. C. D. E.

Explanation:

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38.

The width of the flange of a T-beam, which may be considered to act effectively with the rib depends upon

 A. breadth of the rib B. overall thickness of the rib C. centre to centre distance between T-beams D. span of the T-beam E. all the above.

Explanation:

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39.

Design of a two way slab simply supported on edges and having no provision to prevent the corners from lifting, is made by

 A. Rankine formula B. Marcus formula C. Rankine Grashoff formula D. Grashoff formula E. Rankine-Marcus formula.

Explanation:

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40.

Design of R.C.C. simply supported beams carrying U.D.L. is based on the resultant B.M. at

 A. supports B. mid span C. every section D. quarter span.