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APPENDIX 2.05.3-5B <br />• RIPRAP 8 CULVERT VELOCITY CALCULATIONS <br />100-YEAR, 24-HOUR STORM EVENT <br />SUN COAL COMPANY - MEADOWS N0. 1 <br />ROUTT COUNTY, COLORADO <br />Riprap - Culvert No. 2 <br />Da = 1.5 Q = 1.81 S = .05 Yt = .23 <br />Yt = 23 .15 <br />o T:5 <br />D~5 _ ~ _ .13 <br />Riprap channel length for distance 3 Da or 4.5 feet D50 9~~ <br />Da = pipe diameter in feet <br />5 =slope <br />Yt = tailwater depth in feet <br />Q =peak discharge (cubic feet per second) <br />Reference, Wright-McLaughlin Engineers, 1969 (Figure 5-7) <br />• <br />Riprap - Culvert No. 3 <br />Da = 1.5 Q - 1.45 Yo = .50 <br />Yt = 50 .33 <br />D T.3 <br />pQ~ _ ~4 = .79 <br />Riprap channel length for distance 3 Da or 4.5 feet D50 = 9~~ <br />• <br />- 234 - Rev. 5/86) <br />