Civil Engineering - RCC Structures Design - Discussion

22. 

An R.C.C. beam not provided with shear reinforcement may develop cracks in its bottom inclined roughly to the horizontal at

[A]. 25°
[B]. 35°
[C]. 45°
[D]. 55°
[E]. 60°

Answer: Option C

Explanation:

No answer description available for this question.

Harshit said: (Oct 3, 2014)  
Cracks are developed at 45 degree at supports.

Manikandan said: (Mar 1, 2015)  
Shear reinforcement mean stirrups or other please tell me.

Rahul Malik said: (Apr 20, 2015)  
Its because tension reinforcement wants to expand, so the cracks are developed at 45 degree at the support.

Chinnappa said: (Aug 18, 2015)  
Shear reinforcement means stirrups and it shouldn't greater than 0.8% of total reinforcement.

Piyush Singh said: (Sep 3, 2015)  
Cracks develop at 45 degree from D/2 distance from the face of support where D is the depth of the beam, flexural cracks occurs at middle of the beam with cracks at 90 degree.

Shivappa B said: (Apr 17, 2017)  
Thanks @Piyush.

Ghalib said: (Mar 26, 2018)  
It is towards the middle of the beam at the neutral axis. And at bottom tensile strength is along horizontal so cracks will be perpendicular.

Talib said: (Dec 25, 2018)  
Shear failure at section of beam without shear reinforcement will normally occur at 30 degree to the horizontal.

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