Civil Engineering - Structural Design Specifications

Exercise :: Structural Design Specifications - Section 3

6. 

The value of E for allowable compressive stress for columns, in the formula is taken as

A. 2000000 kg/cm2
B. 2044000 kg/cm2
C. 2045000 kg/cm2
D. 2047000 kg/cm2

Answer: Option D

Explanation:

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7. 

The structure which is subjected to an imposed load after 72 hours for a period of 24 hours, is deemed to be unacceptable if it fails to recover the net deflection less than

A. 90%
B. 85%
C. 80%
D. 75%

Answer: Option C

Explanation:

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8. 

The pitch of transverse reinforcement of a column is taken as

A. least lateral diamension of the compression member
B. sixteen times the smallest diameter of the longitudinal reinforcement of the column
C. forty eight times the diameter of the transverse reinforcement
D. least value of the above.

Answer: Option D

Explanation:

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9. 

The pH value of water to be used in concrete shall generally be

A. not more than 7
B. not less than 6
C. not less than 5
D. not more than 6

Answer: Option B

Explanation:

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10. 

Pick up the correct statement applicable to cased columns.

A. Single I-beam or channels back with or without flange plates may be used
B. The overall dimensions of the steel section do not exceed 750 x 450 mm over plate if used
C. The column is unpainted and is solidly encased in ordinary dense concrete with 10 mm aggregates having a minimum of cube strength 160 kg/cm2 at 28 days
D. The surface and edges of the steel column should be provided a concrete cover not less than 50 mm
E. All the above.

Answer: Option E

Explanation:

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