Multiple choice

A reinforced concrete structure has to be constructed along a sea coast. The minimum grade of concrete to be used as per IS: 456-2000 is

  1. M 15

  2. M 20

  3. M 25

  4. M 30

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

 High durability of the concrete is important criteria for selection of concrete along a sea coast. M-30 having more durability than M-20. Hence, M-30 is recommended as minimum grade of concrete.