An R.C.C. beam of 6 m span is 30 cm width and has a lever arm of 55 cm. If it carries a U.D.L. of 12 t per m and allowable shear stress is $5 k g / c m^{2}$ , the beam

- 1
  
  is safe in shear
- 2
  
  is safe with strirups
- 3
  
  is safe with stirrups and inclined bars
- 4
  
  needs revision of section

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