Civil Engineering - RCC Structures Design

36. 

If the tendon is placed at an eccentricity e below the centroidal axis of the lon-gitudial axis of a rectangular beam (sectional modulus Z and stressed load P in tendon) the stress at the extreme top edge

A. is increased by
B. is increased by
C. is decreased by
D. remains unchanged.

Answer: Option C

Explanation:

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37. 

The maximum ratio of span to depth of a slab simply supported and spanning in one direction, is

A. 35
B. 25
C. 30
D. 20
E. 15

Answer: Option C

Explanation:

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38. 

If Ac, Asc and A are areas of concrete, longitudinal steel and section of a R.C.C. column and m and σc are the modular ratio and maximum stress in the configuration of concrete, the strength of column is

A. σcAc + m σcAsc
B. σc(A - Asc) + m σcAsc
C. σc[A + (m - 1)ASC]
D. all the above.

Answer: Option D

Explanation:

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39. 

The load stress of a section can be reduced by

A. decreasing the lever arm
B. increasing the total perimeter of bars
C. replacing larger bars by greater number of small bars
D. replacing smaller bars by greater number of greater bars
E. none of these.

Answer: Option C

Explanation:

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40. 

If W is the load on a circular slab of radius R, the maximum radial moment at the centre of the slab, is

A.
B.
C.
D.

Answer: Option C

Explanation:

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