The grading of coarse aggregate may be varied through wider limits than that of fine aggregates, since it does not affect the workability, uniformity and finishing qualities of concrete mix. As per IS-383 the grading limit of coarse aggregate, both for single size as well as graded should be as per the table given below.
Grading Limits For Single-Sized Aggregate of Nominal Size
| Sieve Size (mm) | 63 mm | 40 mm | 20 mm | 16 mm | 12.5 mm | 10 mm |
| (Percentage of Passing) | ||||||
| 80 | 100 | – | – | – | – | – |
| 63 | 85 to 100 | 100 | – | – | – | – |
| 40 | 0 to 30 | 85 to 100 | 100 | – | – | – |
| 20 | 0 to 5 | 0 to 20 | 85 to 100 | 100 | – | – |
| 16 | – | – | – | 85 to 100 | 100 | – |
| 12.5 | – | – | – | – | 85 to 100 | 100 |
| 10 | 0 to 5 | 0 to 5 | 0 to 20 | 0 to 30 | 0 to 45 | 85 to 100 |
| 4.75 | – | – | 0 to 5 | 0 to 5 | 0 to 10 | 0 to 20 |
| 2.36 | – | – | – | – | – | 0 to 5 |
Grading Limits For Graded Aggregate of Nominal Size
| Sieve Size (mm) | 40 mm | 20 mm | 16 mm | 12.5 mm |
| (Percentage of Passing) | ||||
| 80 | 100 | – | – | – |
| 63 | – | – | – | – |
| 40 | 95 to 100 | 100 | – | – |
| 20 | 30 to 70 | 95 to 100 | 100 | 100 |
| 16 | – | – | 90 to 100 | – |
| 12.5 | – | – | – | 90 to 100 |
| 10 | 10 to 35 | 25 to 55 | 30 to 70 | 40 to 85 |
| 4.75 | 0 to 5 | 0 to 10 | 0 to 10 | 0 to 10 |
| 2.36 | – | – | – | – |
