Multiquip C-30HD ユーザーズマニュアル
C-30HD — PARTS & OPERATION MANUAL — REV. #4 (03/06/01) — PAGE 21
A.S.T.M. STANDARD SPECIFICATION FOR GRADING AGGREGATE
Screen
Size of Operating
Percentage Passing
U.S.
Metric
(by weight)
FINE AGGREGATE: Referred to as washed concrete sand.
3/8”
3/8”
9.51mm
100%
#4
4760 micron
4.76 mm
95 to 100%
#8
2380 micron
2.38 mm
80 to 100%
#16
1190 micron
1.19 mm
50 to 85%
#30
590 micron
1.19 mm
50 to 85%
#50
297 micron
297 µ
10 to 30%
#100
149 micron
149 µ
2 to 10%
3/8” (9.51 mm) PEA GRAVEL AGGREGATE: Referenced to as #4 Rock or Gravel or 1/2” minus (12.7 mm) size.
1/2”
1/2”
12.7 mm
100%
3/8”
3/8”
9.51 mm
85 to 100%
#4
4760 micron
4.76 mm
10 to 30%
#8
2380 micron
2.38 mm
0 to 10%
#16
1190 micron
1.19 mm
0 to 5%