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Civil Engineering QUESTION #6640
Question 1
The ACI code specifies a 'Maximum spacing' for stirrups primarily to:
  • Reduce the cost of steel
  • Ensure that every 45-degree potential crack is intercepted by at least one stirrup✔️
  • Prevent the longitudinal bars from buckling
  • Increase the compressive strength of the web
Correct Answer Explanation
By limiting spacing (e.g., d/2), the designer ensures that any diagonal crack forming at roughly 45 degrees will be crossed by shear reinforcement.