If the depth of actual neutral axis of a doubly reinforced beam

- 1
  
  is greater than the depth of critical neutral axis, the concrete attains its maximum stress earlier
- 2
  
  is less than the depth of critical neutral axis, the steel in the tensile zone attains its maximum stress earlier
- 3
  
  is equal to the depth of critical neutral axis, the concrete and steel attain their maximum stresses simultanesouly
- 4
  
  all the above

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