# Civil Engineering - RCC Structures Design

### Exercise :: RCC Structures Design - Section 3

31.

If the size of a column is reduced above the floor, the main bars of the columns, are

 A. continued up B. bent inward at the floor level C. stopped just below the floor level and separate lap bars provided D. all the above.

Explanation:

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32.

The system in which high tensile alloy steel bars (silica manganese steel) are used as prestressing tendons, is known as

 A. Freyssinet system B. Magnel-Blaton system C. C.C.L. standard system D. Lee-McCall system.

Explanation:

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33.

The minimum clear cover for R.C.C. columns shall be

 A. greater of 40 mm or diameter B. smaller of 40 mm or diameter C. greater of 25 mm or diameter D. smaller of 25 mm or diameter

Explanation:

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34.

If jd is the lever arm and ΣO is the total perimeter of reinformcement of an R.C.C. beam, the bond stress at the section having Q shear force, is

 A. B. C. D.

Explanation:

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35.

If the loading on a prestressed rectangular beam, is uniformly distributed, the tendon to be provided should be .

 A. straight below centroidal axis B. parabolic with convexity downward C. parabolic with convexity upward D. straight above centroidal axis E. none of these.