Metric Gradation Table

AGGREGATE GRADATION TABLE - (METRIC)

		Metric Sieve Size	37.5 mm	25 mm	19 mm	12.5 mm	9.5 mm	4.75 mm	2.36 mm	600 µm	300 µm	150 µm	75 µm
Grad. No.	Section No.	Intended Use	Percent Passing											Notes
1.	4110, 4125, 4133	PCC FA, Cover Agg.					100	90-100	70-100	10-60			0-1.5	1
3.	4115 (57, 2-8)	PCC CA	100	95-100		25-60		0-10	0-5				0-1.5	2, 11
4.	4115 (2-8)	PCC CA	100	50-100	30-100	20-75	5-55	0-10	0-5				0-1.5	11
5.	4115 (67, 2-8)	PCC CA		100	90-100		20-55	0-10	0-5				0-1.5	11
6.	4115.06 (Repair & Overlay)	PCC CA			100	97-100	40-90	0-30					0-1.5	11
7.	4117 (Class V)	PCC FA&CA	100					80-92	60-75	20-40
8.	4117.03 (Class V)	Fine Limestone					100	90-100					0-30
10.	4120.02, 4120.03 (C gravel)	Granular Surface			100			50-80	25-60					3
11.	4120.02, 4120.04, 4120.05, 4120.07, A,B Cr.St.)	Granular Surface & Shoulder		100	95-100	70-90		30-55	15-40				6-16	4, 5
12a.	4121 (Cr. St.)	Granular Subbase	100			40-80			5-25				0-6	6
12b.	4121 (Cr. Gravel)	Granular Subbase	100			50-80			10-30		5-15		3-7
13.	4122.02 (Cr.St.)	Mac. St. Base	75 mm nominal maximum size screened over 19 mm or 25 mm screen.
14.	4123	Modified Subbase	100		70-90				10-40				3-10	5, 7
19.	4125 (12.5mm) (Cr.Gr. or Cr.St.)	Cover Aggregate			100	97-100	40-90	0-30	0-15				0-2
20.	4125 (12.5mm) (Scr.Gr.)	Cover Aggregate			100	95-100	40-80	0-15	0-7				0-1.5
21.	4125 (9.5 mm)	Cover Aggregate				100	90-100	10-55	0-20	0-7			0-1.5
22.	4124.02B	Fine Slurry Mixture					100	85-100	40-95	20-60	14-35	10-25	5-25	10
23.	4124.02B (Cr.St.)	Coarse Slurry Mixture					100	70-90	45-70	19-34	12-25	7-18	5-15
29.	4131	Porous Backfill			100	95-100	50-100	0-50	0-8
30.	4132.02 (Cr.St.)	Special Backfill	100						15-45				0-10	5
31.	4132.03 (Gravel)	Special Backfill		100	90-100	75-90			30-55				3-7
32.	4133 (Sand/Gr./Cr.St.)	Granular Backfill	100% passing the 76.2 mm screen.						20-100				0-10	8.9
35.	4133.05 (Natural Sand/Gr.)	Floodable Backfill	100						20-90				0-4
36.	4133.05 (Natural Sand)	Floodable Backfill							100				0-2

Notes: (Gradations No. 2, 9, 12, 15, 16, 17, 18, 24, 25, 26, 27, 28, 33, and 34 have been deleted)

1. For Section 4110, when the fine aggregate is sieved through the following numbered sieves - 4.75 mm, 2.36 mm, 1.18 mm, 600 µm, 300 µm, and 150 µm - not more than 40% shall pass one sieve and be retained on the sieve with the next higher number.

2. When used in precast and prestressed concrete bridge beams, 100% shall pass the 25 mm sieve.

3. When compaction of material is a specification requirement, the minimum percent passing the 75 µm sieve is 6%.

4. See specifications for combination of gravel and limestone.

5. Unwashed air dried samples of crushed composite material shall be tested for gradation compliance except that no gradation determination will be made for material passing the 75 µm sieve.

6. The gradation requirement for the 2.36 µm sieve shall be 5% to 20% when recycled material is supplied.

7. For Section 4121 gravel, one fractured face on 30% or more of the particles retained on the 3/8 inch sieve. For Section 4123 gravel, one fractured face on 75% or more of the particles retained on the 3/8 sieve.

8. Crushed stone shall have 100% passing the 25 mm sieve.

9. When granular backfill is used in floodable applications, use gradation 35 or 36. When granular backfill is used under flowable mortar, one of the following alternative materials shall be used: natural sand compliant with Section 4110, except the % passing the No. 200 sieve shall not exceed 4%; gravel, crushed stone, or crushed concrete meeting the gradation requirements of Section 4121.

10. Gradation limitations for the 600 µm, 300 µm, and 150 µm sieves shall not apply when slurry mixture is applied by hand lutes such as for slurry leveling.

11. Maximum of 2.5% passing the No 200 sieve allowed if generated from the parent material when documented production is 1% or less ad determined by the Office of Materials.