engineering recuitment BMC Sub Engineer Mock Test 2024 Construction Materials and Management Concrete
As per IS 10262, the target mean compressive strength is given by fck' = fck + X OR fck + 1.65 S . The value of X for M 30 grade of concrete is _____, when adequate record of the past data is present with us ? Where X is a factor based on the grade of concrete and S is the standard deviation in N/mm2
1
5
2
5.5
3
6.5
4
8
5
4.5