engineering recuitment UKPSC AE Civil 2021 Mock Test (Re-Exam) Reinforced Concrete Structures Prestress Concrete Analysis of Prestress
As per India standard code of practice for prestressed concrete (IS:1343-1980) the minimum grades of concrete to be used for post-tensioned and pre-tensioned structural elements are respectively
1
M 20 for both
2
M 40 and M 30
3
M 15 and M 20
4
M 30 and M 40