Civil Engineering - GATE Exam Questions - Discussion

47. 

Un-factored maximum bending moments at a section of a reinforced concrete beam resulting from a frame analysis are 50, 80, 120 and 180 kNm under dead, live, wind and earthquake loads respectively. The design moment (kNm) as per IS: 456-2000 for the limit state of collapse (flexure) is

[A]. 195
[B]. 250
[C]. 345
[D]. 372

Answer: Option D

Explanation:

No answer description available for this question.

Anupama said: (Jan 26, 2014)  
1.2 DL+1.2 LL+1.2 EQ = DESIGN MOMENT.
1.2*50 + 1.2*80 + 1.2*180 = DESIGN MOMENT.

60+96+216 = DESIGN MOMENT.
DESIGN MOMENT = 372.

Vamsi said: (Aug 11, 2014)  
What about wind load?

Dileepbarnwal said: (Sep 24, 2014)  
Design moment = maximum of 1.2(DL + LL + EQ/WL).

Anurag Srivastava said: (Sep 26, 2015)  
Then why wind load is given when it is optional.

Saajan said: (Nov 27, 2015)  
Wind load is given because this question is for GATE examination. Just for the sole purpose of creating confusion.

Shail said: (Dec 16, 2015)  
@Mr. Anurag.

If there is seismic wave then the effect of wind is neglected, it is not optional.

Vaibhav said: (Jan 28, 2017)  
Is it every time possible that, wind load is always less than earthquake load?

Arya said: (Apr 18, 2017)  
Assumed as wind and earthquake forces will never act together, so seismic only considered.

Tapash Paul said: (Jan 1, 2018)  
Here, the seismic load is maximum w.r.t wind load, so the seismic load is considered.

Shakil Alwar said: (Jan 6, 2018)  
Wind load and earthquake load not consider together.

Swar said: (Apr 9, 2019)  
Yes, it is a rule that wind load and earthquake loads should not be considered together.

Santosh said: (Dec 25, 2020)  
Thank you all.

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