Multiple choice

As per IS : 456-2000, consider the following statements I. The modular ratio considered in the working stress method depends on the type of steel used II. There is an upper limit on the nominal shear stress in beams (even withshear reinforcement) due to the possibility of crushing of concrete in diagonal compression. III. A rectangular slab whose length is equal to its width may not be a two-way slab for some support conditions.

The TRUE statements are

  1. only I and II

  2. only II and III

  3. only I and III

  4. I, II and III
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

 $\text{Modulus ratio in working stress method is defined as}\\ \hspace{1.5cm}m=\frac{280}{3\sigma_{cbc}}\\ \text{Hence,dose not depend upon the type of steel used but type of grade of concrete.E for steel remains constant for all steel}\bigg(m=\frac{E_c}{E_s}\bigg)$

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