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STORMWATER REPAIRS TO WHITTED BUILDING <br /> HILLSBOROUGH,NC 03/26/13 <br /> E. Base Course: Naturally or artificially graded mixture of natural or crushed gravel, crushed <br /> stone, and natural or crushed sand; ASTM D 2940; with at least 95 percent passing a 1-1/2-inch <br /> (37.5-mm)sieve and not more than 8 percent passing a No. 200 (0.075-mm)sieve. <br /> F. Engineered Fill: Naturally or artificially graded mixture of natural or crushed gravel, crushed <br /> stone, and natural or crushed sand; ASTM D 2940; with at least 90 percent passing a 1-1/2-inch <br /> (37.5-mm)sieve and not more than 12 percent passing a No. 200(0.075-mm)sieve. <br /> G. Bedding Course: Naturally or artificially graded mixture of natural or crushed gravel, crushed <br /> stone, and natural or crushed sand; ASTM D 2940; except with 100 percent passing a 1-inch <br /> (25-mm)sieve and not more than 8 percent passing a No. 200(0.075-mm)sieve. <br /> H. Drainage Course: Narrowly graded mixture of washed crushed stone, or crushed or uncrushed <br /> gravel; ASTM D 448; coarse-aggregate grading Size 57; with 100 percent passing a 1-1/2-inch <br /> (37.5-mm)sieve and 0 to 5 percent passing a No. 8 (2.36-mm)sieve. <br /> I. Filter Material: Narrowly graded mixture of natural or crushed gravel, or crushed stone and <br /> natural sand; ASTM D 448; coarse-aggregate grading Size 67; with 100 percent passing a f- <br /> inch(25-mm)sieve and 0 to 5 percent passing a No. 4(4.75-mm)sieve. <br /> J. Sand: ASTM C 33; fine aggregate,natural,or manufactured sand. <br /> K. Impervious Fill: Clayey gravel and sand mixture.capable of compacting to a dense state. <br /> PART 3 -EXECUTION <br /> 3.1 GENERAL <br /> A. ALL EARTHWORK ON THIS PROJECT TO BE UNCLASSIFIED. <br /> 3.2 PREPARATION <br /> A. Protect structures, utilities, sidewalks, pavements, and other facilities from damage caused by <br /> settlement, lateral movement, undermining, washout, and other hazards created by earthwork <br /> operations. <br /> B. Preparation of subgrade for earthwork operations including removal of vegetation, topsoil, <br /> debris, obstructions, and deleterious materials from ground surface shall be performed prior to <br /> earthwork operations. <br /> 3.3 DEWATERING <br /> A. Prevent surface water and ground water from entering excavations, from ponding on prepared <br /> subgrades,and from flooding Project site and surrounding area. <br /> EARTHWORK 02300-3 <br />