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TABLE NO 4
GRADATION SPECIFICATION LIMIT FOR BITUMINOUS PAVEMENTS

ASPHALT MIXTURE - SURFACE COURSE - LOW PRESSURE TIRES ( 100 Psi & under)
Percent passing (by weight)

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

Size Gradation 13 Gradation 14 Gradation 15
1“ A B C A B C A B C

100 100 100 - - - - - -
3/4” 78-95 80-95 84-96 100 100 100 - - -

1/2” 68-85 71-88 75-90 76-95 80-95 85-96 100 100 100

3/8” 57-75 62-82 66-85 67-85 73-89 79-93 75-95 80-95 86-96
#4 40-58 47-65 52-70 50-66 58-73 65-80 55-70 63-80 70-84

#8 28-46 35-51 40-58 38-53 43-58 53-68 38-54 48-64 54-69

#16 20-35 26-40 30-47 28-41 32-46 41-55 27-41 36-49 41-55
#30 13-25 18-30 22-36 19-30 23-36 29-42 18-29 24-36 28-42

#50 8-17 12-21 15--26 12-21 15-25 18-29 10-20 15-25 18-29

#100 5-12 7-14 9-18 6-14 9-16 11-18 6-13 9-17 11-19
#200 2-8 4-10 4-10 4-10 4-10 6-10 4-10 4-10 6-10