Nominal Proportion Method:

The method of nominal grading of aggregate is frequently used for minor concrete works, while design mix is not practiced or practicable. The nominal grading of concrete is commonly one part of cement to 'b' part of fine aggregate and '2b' part of coarse aggregate, that is 1 : 1 : 2; 1 : 1½ : 3, 1 : 2 : 4, 1 : 3 : 6; 1 : 4 : 8 and 1 : 8 : 16 and etc.

In common the coarse aggregate preparation is twice that of fine aggregate.