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2017-02-03_PERMIT FILE - C1980004 (18)
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2017-02-03_PERMIT FILE - C1980004 (18)
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Last modified
7/13/2017 8:20:02 AM
Creation date
7/13/2017 8:18:29 AM
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Template:
DRMS Permit Index
Permit No
C1980004
IBM Index Class Name
Permit File
Doc Date
2/3/2017
Section_Exhibit Name
Appendix M Hydrologic Calculations
Media Type
D
Archive
No
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Riprap Sizing - Across Embankment <br />D50 = Size of Riprap <br />D50 = ((V X S^.17)/7.58))^2 <br />D50 = Diameter in feet <br />V =Velocity <br />S =Slope <br />D50 = 0.09 feet <br />1.1 inches None Required <br />Embankment Spillway Design (into McClane Creek) <br />Manning's Equation <br />Flow In a Trapezoidal Channel <br />DEPTH <br />D <br />0.33 <br />FEET <br />WIDTH <br />W <br />8 <br />FEET <br />Slope <br />S <br />0.65 <br />EXPRESS AS DECIMAL <br />Mannings "N" <br />N <br />0.04 <br />EXPRESS AS DECIMAL <br />SIDE SLOPE <br />X <br />1.5 <br />SLOPE = X:1 <br />AREA=(W*D)+(X*D2)= <br />WETTED PERIMETER=(W)+2*[((X*D)2+D2)112] <br />R=AREA/WETTED PERIMETER <br />V=(1.49/N)*(R2r3) *(S "2 )= <br />Q=AXV= <br />Q REQUIRED - Peak Discharge <br />Riprap Sizing - Across Embankment <br />D50 = Size of Riprap <br />D50 = ((V X S^.17)/7.58))^2 <br />D50 = Diameter in feet <br />V = Velocity <br />S =Slope <br />D50 = 2.78 feet <br />2.80 Feet <br />9.19 Feet <br />0.31 <br />13.61 Ft/Sec <br />38.15 CFS <br />38.10 CFS <br />33.4 inches Use 36" <br />TR -16 16 05/08 <br />
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