2.01 AGGREGATE MATERIALS A. Fine Aggregate (Type A4): Natural river or bank sand; free of silt, clay, loam, friable or soluble materials, and organic matter; graded in accordance with ASTM C33. B. Coarse Aggregate (Type A1): Well graded crushed stone or gravel conforming to the requirements of ASTM C33, Gradation 67. C. Gravity PVC/HDPE Sewer Pipe Bedding Aggregate: Special Class 1 PVC pipe bedding material graded in accordance with ASTM C136, within the limits specified in the table within this Section. D. RCP Storm Sewer Bedding Aggregate: Class 4 aggregate graded in accordance with ASTM C136, within the limits specified in the table within this Section. E. PVC Water and Sewer Pipe Bedding Aggregate: Class 6 aggregate graded in accordance with ASTM C136, within the limits specified in the table within this section. F. Coarse Aggregate (Base Course and Type A3): Gravel; Angular crushed, or natural stone; free of shale, clay, friable material and debris; of one of the following three materials: 1. Class 5 Aggregate as specified in Section 816 of the North Dakota Department of Transportation Standard Specifications for Road and Bridge Construction, latest edition. 2. Crushed Recycled Concrete Pavement. Maximum size of crushed material shall be 1 ½ inches. Maximum percentage passing the #200 sieve shall be 10 percent. Material shall be blended to provide a uniform consistent mixture. Rubble material from building demolition shall not be acceptable. 3. Salvaged Base Course meeting requirements of North Dakota Department of Transportation Standard Specification Section 817. G. Manhole Bedding Aggregate: Gravel; Angular crushed, or natural stone; free of shale, clay, friable material and debris; Class 3 aggregate graded in accordance with ASTM C136, within the limits specified in the table within this Section.
