Civil Engineering - Structural Design Specifications

Exercise :: Structural Design Specifications - Section 3

11. 

M 30 grade concrete means, its compressive strength of 15-cm cube, is 30 N/mm2 after

A. 3 days
B. 7 days
C. 21 days
D. 28 days

Answer: Option D

Explanation:

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12. 

If the ratio of effective span to overall depth of a simply supported beam is less than 1, the lever arm is

A. 0.3l
B. 0.4l
C. 0.5l
D. 0.6l

Answer: Option D

Explanation:

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13. 

If the ends of the compression flanges of simply supported girders are fully restrained against lateral bending, the effective length is taken as

A. span
B. 0.85 x span
C. 0.7 x span
D. 0.5 x span

Answer: Option C

Explanation:

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14. 

The individual part of the structures is subjected to a load test for 24 hours by applying a load equal to full dead load of the structure plus

A. imposed load
B. 1.15 times imposed load
C. 1.25 times imposed load
D. 1.3 times imposed load.

Answer: Option C

Explanation:

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15. 

The width of lacing bars in mm is kept

A. equal to nominal rivet diameter
B. twice the nominal rivet diameter
C. thrice the nominal rivet diameter
D. maximum of the above rounded to nearest 5 mm.

Answer: Option D

Explanation:

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