Coarse-aggregate grading. The grading of coarse aggregate of a given maximum size can vary over a
wide range without much effect on cement and water requirements if the proportion of fine aggregate
produces concrete having good workability. Table 1-3 gives the grading requirements for coarse
aggregate. If coarse-aggregate grading varies too much, you may need to vary the mix proportions to
produce workable concrete or, more economically, request the producer to adjust his operation to meet
the grading requirements.
Table 1-3. Grading requirements for coarse aggregate.