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The maximum ratio of span to depth of a slab simply...

This question belongs to Civil Engineering RCC Structures Design
RCC Structures Design
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The maximum ratio of span to depth of a slab simply supported and spanning in two directions, is

Answer & Solution
Correct Answer: Option C
Reason: As per IS 456:2000, the basic span-to-effective depth ratio for a simply supported slab spanning in two directions is 35 when mild steel reinforcement (Fe 250) is used.

For HYSD bars: The value is multiplied by a modification factor of 0.8, giving 0.8 × 35 = 28.

Purpose: This limit controls deflection and ensures adequate stiffness of the slab under service loads.
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3 Comments
Prana Krushna
Prana Krushna 1 year ago
For Simply support
Mild steel 35,So option C is right
HYSD 0.8 times of mild steel value=0.8*35=28
Muhammad ZAKIR
Muhammad ZAKIR 2 years ago
for mild steel its correct . i.e 35
Pratyusa Kumar
Pratyusa Kumar 7 years ago
Option B is correct
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