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Q: What is the minimum value of effective depth of a cantilever RCC beam of span 7 m to satisfy the vertical deflection limit as per IS 456-2000?
  • A. 500 mm
  • B. 1000 mm
  • C. 269.2 mm
  • D. 350 mm
Correct Answer: Option B - Given, Span of cantilever = 7 m Depth of beam = ? We know, Span/depth ratio for vertical deflection limit is 7. Span/depth = 7 7000/depth = 7 depth = 7000/7 depth = 1000 mm
B. Given, Span of cantilever = 7 m Depth of beam = ? We know, Span/depth ratio for vertical deflection limit is 7. Span/depth = 7 7000/depth = 7 depth = 7000/7 depth = 1000 mm

Explanations:

Given, Span of cantilever = 7 m Depth of beam = ? We know, Span/depth ratio for vertical deflection limit is 7. Span/depth = 7 7000/depth = 7 depth = 7000/7 depth = 1000 mm