If the age of loading on the concrete structure is 28 days, then the creep coefficient may be taken as
- A2.2
- B2.0
- C1.8
- D1.6Correct
Solution
Concept
Creep coefficient by age of loading (IS 456)
Step-by-step solution
1. 7 days: 2.2; 28 days: 1.6; 1 year: 1.1.
Explanation
Creep reduces with the age of concrete at loading.
Why the other options are wrong
2.2 is for loading at 7 days.
Shortcut
7 d 2.2, 28 d 1.6, 1 yr 1.1.
Common mistake
Taking 2.2.
Correct answer: D) 1.6