PART 2 - PRODUCTS
2.01 MATERIAL:
A. GRAVEL BORROW:
Gravel borrow shall consist of inert material that is hard, durable stone and coarse
sand essentially free of organic matter, plastic fines (clay) and debris, and shall
meet the gradation requirements below:
Sieve Opening Percent Passing (weight)
6 inch 100
No 4 25 - 70
No 200 0-12
B. CRUSHED STONE:
Crushed stone shall consist of sound, hard, durable, angular fragments obtained
by breaking and crushing solid or shattered natural rock. Crushed stone shall not
contain vegetation, masses of roots, loam and other organic matter, clay, and
other fine or harmful substances. It shall be well graded and shall meet the
gradation requirements listed below:
Sieve Opening Percent Passing
2 inch 100
1-1/2 inch 85 - 100
3/4 inch 45-75
No. 4 10 - 45
No. 200 0-5
C. SAND BORROW:
The maximum size of any stone or fragment shall not exceed three-fourths of the
compacted depth of the layer being placed but in no case larger than 6 inches
Passing No. 4 sieve opening 70 — 100%
Passing No. 200 sieve opening O-12%
E. PEASTONE:
Peastone shall be smooth, hard, naturally occurring, rounded stone meeting the
following gradation requirements:
Passing 5/8 inch square sieve opening - 100%
Passing No. 8 sieve opening - 0%
E. BACKFILL MATERIALS:
1. Class B Backfill:
Class B backfill shall be granular, well graded friable soil; free of rubbish, ice,
snow, tree stumps, roots, clay and organic matter; with 30 percent or less passing
02300-3
