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0 <br /> TABLE I <br /> • Aggregate' <br /> Standard Sizes of Coarse That Meet <br /> Xerxes PEA GRAVEL Specification 2 <br /> This table identifies standard sizes of coarse aggregate that meet Xerxes'pea gravel <br /> specification.The first column identifies standard sieve sizes that are used to grade aggregate <br /> material.The remainder of the columns have a standard aggregate size number at the top of <br /> the column.For each aggregate size, the amount of material finer than each laboratory sieve <br /> (square openings)is given as percentage of the total weight of the sample.These percentages <br /> give an indication of the particle size distribution or gradation within a given aggregate size. <br /> Using aggregate size number 6 as an example, we can expect 20% to 55% of the sample <br /> (measured by weight)to pass through a 1/2 inch sieve. <br /> Aggregate Size Numbers <br /> Sieve Size 6 67 7 <br /> Amounts finer than each laboratory sieve(Square Openings),weight percent <br /> a, <br /> 1 in. 100% 100% — <br /> a <br /> 3/4 in. 90 to 100 90 to 100 100 <br /> 1/z in. 20 to 55 — 90 to 100 <br /> 3/8 in. 0 to 15 20 to 55 40 to 70 <br /> nA <br /> No.4(0.187 in.) 0 to 5 0 to 10 0 to 15 <br /> ft <br /> 1/s in. — — <br /> No.8(0.094 in.) — 0 to 5 0 to 5 <br /> NOTES <br /> 1. Standard sizes of coarse aggregate per ASTM D-448,ASTM C-33 and AASHTO M 43. <br /> 2. PEA GRAVEL(mix of rounded particles)must have a minimum diameter of 1/s'and a maximum <br /> diameter of 3/4". No more than 5% of the backfill shall pass through a No. 8 sieve. <br />