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

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The maximum ratio of span to depth of a slab simply supported and spanning in two directions, is

A. 25

B. 30

C. 35

D. 40

Answer: Option C

Solution (By Examveda Team)

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.

This Question Belongs to Civil Engineering >> RCC Structures Design

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Comments (3)

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:

2 years ago

for mild steel its correct . i.e 35
Pratyusa Kumar:

7 years ago

Option B is correct

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