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PART 2 — PRODUCTS <br />2.1 SOIL AND RIPRAP MATERIALS <br />A. All embankment and backfill materials shall be free of debris, waste, frozen materials, <br />vegetation, and other deleterious matter in addition to the specific requirements listed for <br />each material type. <br />B. Select Backfill: Granular soil materials free of cobbles and gravel larger than 3 -inches, <br />weathered bedrock and other soft particles of poor durability, and other deleterious <br />matter, and meeting the gradation limits shown on Table 02200-1: <br />TABLE 02200-1 <br />SELECT BACKFILL GRADATION LIMITS <br />Sieve Designation <br />Opening Size (mm) <br />Passing(%) <br />No. 200 <br />0.074 <br />0-15 <br />No. 4 <br />4.67 <br />0-60 <br />% - inch <br />19.1 <br />45-100 <br />3 — inch <br />76.2 <br />100 <br />Select backfill materials having more than 12 percent passing the No. 200 sieve, fines <br />shall be silty: Atterberg limits determined in accordance with ASTM D4318 plot below <br />the "A" line on a Casagrande plasticity chart or plasticity index < 4. <br />C. Embankment Fill: Soil materials derived from required excavations or from local borrow <br />sources; free of rock or gravel larger than 3 -inches. <br />D. Drain Rock: Clean, coarse gravel or crushed gravel to sandy gravel composed of hard, <br />strong, and durable particles; free of nondurable materials; meeting the gradation limits <br />shown on Table 02200 — 2. Particles larger than 3/ -inch for Drain Rock shall have a <br />percentage of wear of not more than 50 at 500 revolutions as determined by ASTM C535 <br />and a maximum absorption of 3% as determined by ASTM C127. Place against Select <br />Backfill, bedrock or concrete only unless directed otherwise by Engineer. <br />TABLE 02200-2 <br />DRAIN ROCK GRADATION LIMITS <br />Sieve Designation <br />Opening Size (mm) <br />Passing(%) <br />No. 200 <br />0.074 <br />0-3 <br />No. 8 <br />2.36 <br />0-5 <br />No. 4 <br />4.75 <br />0-10 <br />% —inch <br />9.5 <br />20-55 <br />3/ - inch <br />19.0 <br />90-100 <br />1 -inch <br />25 <br />100 <br />Earthwork February 2017 02200-4 <br />