GRADATIONS
Forgey-Smith
Quarries
1-1/2" W-BASE
1-1/2" = 100%
1" = 90-100%
1/2" = 60-85%
#4 = 45-65%
#8 = 33-53%
#200 = 3-12%
GR-BASE
1" = 100%
3/4" = 90-100%
1/2" = 65-85%
#4 = 50-78%
#8 = 37-67%
#30 = 13-35%
#200 = 4-15%
Quarries
1-1/2" = 100%
1" = 90-100%
1/2" = 60-85%
#4 = 45-65%
#8 = 33-53%
#200 = 3-12%
1" = 100%
3/4" = 90-100%
1/2" = 65-85%
#4 = 50-78%
#8 = 37-67%
#30 = 13-35%
#200 = 4-15%