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TABLE NO 6
GRADATION SPECIFICATION LIMIT FOR BITUMINOUS PAVEMENTS

BITUMINOUS ROAD MIX - SURFACE COURSE
Percent passing (by weight)

Sieve 1 inch maximum 3/4 inch maximum 1/2 inch maximum

Size Gradation 17 Gradation 18 Gradation 19
1“ A B C A B C A B C

100 - -
3/4” 85-100 100 -

1/2” 72-95 82-100 100

3/8” 61-90 68-93 82-100
#4 43-79 48-82 57-88

#8 32-68 35-71 41-76

#16 24-56 26-60 30-64
#30 18-44 20-48 22-52

#50 13-32 14-38 15-40

#100 9-21 10-25 10-26
#200 5-12 5-12 5-12