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
Join The Discussion
Comments (3)
Distribution of shear intensity over a rectangular section of a beam, follows:
A. A circular curve
B. A straight line
C. A parabolic curve
D. An elliptical curve
If the shear stress in a R.C.C. beam is
A. Equal or less than 5 kg/cm2, no shear reinforcement is provided
B. Greater than 4 kg/cm2, but less than 20 kg/cm2, shear reinforcement is provided
C. Greater than 20 kg/cm2, the size of the section is changed
D. All the above
In a pre-stressed member it is advisable to use
A. Low strength concrete only
B. High strength concrete only
C. Low strength concrete but high tensile steel
D. High strength concrete and high tensile steel
In a simply supported slab, alternate bars are curtailed at
A. $${\frac{1}{4}^{{\text{th}}}}$$ of the span
B. $${\frac{1}{5}^{{\text{th}}}}$$ of the span
C. $${\frac{1}{6}^{{\text{th}}}}$$ of the span
D. $${\frac{1}{7}^{{\text{th}}}}$$ of the span
For Simply support
Mild steel 35,So option C is right
HYSD 0.8 times of mild steel value=0.8*35=28
for mild steel its correct . i.e 35
Option B is correct