Civil Engineering - UPSC Civil Service Exam Questions - Discussion

14. 

Consider the following statements with ragard to crack formation and its control:
1. The surface width of the crack should not, in general, exceed 0.30 mm for structures not subjected to aggressive environment.
2. When depth of web in a beam exceeds 750 mm, side face reinforcement @ 0.1 percent of web area should be provided on each face.
3. The nominal spacing of main bars in a slab should not exceed three times the effective depth of a solid slab or 300 mm, whichever is smaller.
Which of the statements given above is/are correct ?

[A]. 1 only
[B]. 1 and 2
[C]. 1 and 3
[D]. 2 and 3

Answer: Option C

Explanation:

No answer description available for this question.

Gopu said: (Apr 29, 2017)  
I think the 2nd statement is also right.

Vai said: (Nov 3, 2017)  
As per Clause 26.5.1.3 of IS 456:2000, side face reinforcement @ 0.1 percent of web area shall be distributed equally on two faces.

This implies that side face reinforcement on each face shall be 0.05 percent. Hence point no.2 is wrong above.

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