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MANNINGS FLOW EQUATIONS.xis <br />CANON CITY QUARRY - MAIN DRAINAGE COLLECTOR CHANNEL (Q100 = 155.4 CFS) <br />BOTTOM WIDTH (B) (FT) <br />= 2.00 <br />AREA (A) _ <br />(B + ((0.5' D) / TAN O� + ((0.5 * D) / TAN OR)) ` D <br />= 7.500 <br />SOFT <br />DEPTH (D) (FT) <br />= 1.50 <br />SIDE SLOPE ANGLE (LEFT)(Oj <br />= 26.565 = 0.4636 <br />WETTED PERIMETER (P) = <br />B + (D / SIN 00 + (D / SIN OR) <br />= 8.7082 <br />FT <br />SIDE SLOPE ANGLE (RIGHT)(OR) <br />= 26.565 = 0.4636 <br />TOP WIDTH (T) (FT) <br />= 8.00 <br />HYDRAULIC RADIUS (R) = <br />A / P <br />= 0.8613 <br />FT <br />SLOPE (S) (FT/FT) <br />= 0.333 <br />MANNINGS NUMBER (N) <br />= 0.037 <br />CONVEYANCE (0) _ <br />(1.486 / N) * A" Rev')S(1/2) <br />= 157.35 <br />CFS <br />VELOCITY (V) = <br />O / A <br />= 20.98 <br />FT/S <br />TYPICAL MANNINGS NUMBERS <br />CONCRETE <br />= 0.013 <br />SMOOTH EARTH <br />= 0.018 <br />FIRM GRAVEL <br />= 0.023 <br />NATURAL CHANNEL, GOOD <br />= 0.025 <br />NATURAL CHANNEL, ROUGH <br />= 0.035 <br />NATURAL CHANNEL, VERY POOR <br />= 0.060 <br />TYPE VL RIPRAP <br />= 0.031 <br />TYPE L RIPRAP <br />= 0.033 <br />TYPE M RIPRAP <br />= 0.035 <br />TYPE H RIPRAP <br />= 0.037 <br />TYPE VH RIPRAP <br />= 0.039 <br />TYPICAL SIDE SLOPES <br />1.0:1 SLOPE <br />= 45.000 <br />1.5:1 SLOPE <br />= 33.690 <br />2.0:1 SLOPE <br />= 26.565 <br />2.5:1 SLOPE <br />= 21.801 <br />3.0:1 SLOPE <br />= 18.435 <br />OPEN DITCH <br />