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RIPRAP SIZING TABLE <br /> CLASSIFICATION AND GRADATION OF ORDINARY RiPRAP <br /> Riprap % Smaller Than Intermediate Rock d50 <br /> Designation Given Size Dimension <br /> By Weight (Inches) (Inches) <br /> Type VL 70-100 12 <br /> 50-70 9 <br /> 35-50 6 6** <br /> 2-10 2 <br /> Type L 70-100 15 <br /> 50-70 12 <br /> 35-50 9 9** <br /> 2-10 3 <br /> Type M 70-100 21 <br /> 50-70 18 <br /> 35-50 12 12 <br /> 2-10 4 <br /> Type H 100 30 <br /> 50-70 24 <br /> 35-50 18 18 <br /> 2-10 6 <br /> Type VH 100 42 <br /> 50-70 33 <br /> 35-50 24 24 <br /> 2-10 9 <br /> ° *d50 = Mean particle size <br /> 0 <br /> ° ** Bury types VL and L with native top soil and revegetate to protect <br /> from vandalism. <br /> O <br /> C <br /> W <br /> TAKEN FROM DRAINAGE CRITERIA MANUAL, URBAN DRAINAGE AND FLOOD CONTROL <br /> DISTRICT-66, DENVER. TABLE 5-1. <br /> r <br /> i <br /> r = <br /> C <br />� O - <br /> d Golder Associates <br />