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JOB NO 96.001.00 DATE 1/31/96 <br />PROJECT Stevens Lease Clay Mine <br />Rip-rap -Diversion Ditch <br />From Urban Drainage 8 Flood Control District's <br />Drainage Criteria Manual: <br />V =Mean Velocity = 9.0 for 100-yr flows V * S'"~ _ 9.0*.06'~ <br />= 4.3 <br />S =Channel Slope = 6% (SS -1) (2.5-1) <br />SS =Specific Density =Assume minimum of 2.5 <br />From Table 5-6, Use Type "M" (18") Rip-Rap <br />Use L= 5'Top width of 100-year flow in channel <br />=5'8=40 feet long <br />Place approximately 2'Top width wide <br />Place rip-rap 15 'wide. <br />Minimum Depth = 1.5' D = 24 "deep. <br />