Multiple choice

A 16 mm thick plate measuring 650 mm x 420 mm is used as a base plate for an ISHB 300 column subjected to a factored axial compressive load of 2000 kN. As per IS 456-2000, the minimum grade of concrete that should be used below the base plate for safely carrying the load is

  1. M 15

  2. M 20

  3. M 30

  4. M 40

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

 Plate size and column dimension has nothing to do with minimum grade of concrete, As per IS : 456 - 2000 $$f_{ck} = 20MPa$$

or grade of concrete M-20