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1. Stabilization material is crusher-run rock, conforming to ASTM D448, or <br /> CDOT#357. <br /> SIZE PERCENT PASSING <br /> 2 %2" 100 <br /> 211 95-100 <br /> 1" 35-70 <br /> /2 11 10-30 <br /> ##4 0-5 <br /> a. Or preapproved substitute. <br /> B. Geotextile fabric shall be used in conjunction with stabilization material unless prior <br /> written approval is received from the City. <br /> 1. Geotextile fabric shall conform to CDOT, Section 712.08, Class A Table <br /> 712-2. <br /> 2. Acceptable types of geotextile fabric and their manufacturers are: <br /> a. Bidim C-28 and C-34. <br /> b. Fibretex Grade 150,by"Crown Zelerbach". <br /> } C. Mirafi 500 X,by"Celanese". <br /> d. True Tex MG-100,by"True Temper". <br /> e. Or an approved equivalent. <br /> C. Subgrade below top six-inches (6") - Same as top six-inches (6") except that broken <br /> concrete and rock may be included in sizes permitting compaction as specified <br /> without discernible voids. <br /> 2.03 BEDDING ZONE MATERIALS <br /> A. The bedding zone shall extend from either four-inches(4")or 0.25 O.D., whichever is <br /> greater below the invert of the pipe to an elevation six-inches above the top of pipe. <br /> B. Bedding and Pipe Zone materials: <br /> 1. Angular crushed rock,conforming to CDOT#67. <br /> SIZE PERCENT PASSING <br /> 1-inch 100 <br /> Y4-inch 90-100 <br /> 3/8-inch 20-55 <br /> No.4 0-10 <br /> No. 8 0-5 <br /> Boyd Freeman Ditch Improvements 02320-5 Trenching,Backfilling and <br /> August 2005 Compacting <br />