1.

For the construction of R.C.C. slabs, columns, beams, walls, etc. the grade of concrete mix used, is

A. 1 : 3 : 6
B. 1 : 1.5 : 3
C. 1 : 2 : 4
D. 1 : 1 : 2
Answer» D. 1 : 1 : 2


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