Laserfiche WebLink
Asc-6 <br />Manning Equation: <br />• q10 = 1 . 49 AR~s S <br />n <br />Hydraulic Data: <br />Q = 16.0 cfs <br />D = 1.13 feet <br />A = 2.55 feet2 <br />R = 0.51 feet <br />s = 0.07 feet/feet <br />n = 0.04 <br />V = 6.26 fps <br />III. SEDIMENTATION RESERVOIR COLLECTOR <br />SIGN - North of Stockpile <br />acent to Access-Haul Road <br />Problem: Determine hydraulic data of a V-shaped collector ditch, <br />depth of flow at the design storm and maximum antici- <br />pated velocity. <br />Solution: Maximum Allowable Velocity, Vmax = 6 fps <br />q10 - 7.7 cfs (from Peak Discharge Calculations) <br />• n = 0.04 (Manning Coefficient for riprap) <br />sideslope = 2:1 (horizontal to vertical) <br />slope(s) = 0.04 feet/feet <br />Manning Equation: <br />q10- 1.49 AR''~~ S= <br />n <br />Hydraulic Data: <br />Q = 7.7 cfs <br />D = 0.96 feet <br />A = 1.84 feet2 <br />R = 0.43 feet <br />s = 0.04 feet/feet <br />n = 0.04 <br />V = 4.18 fps <br />. IV. TOTAL RESERVOIR VOL <br />Liquid Volume = 1.95 Ac-Ft = 84,942 cubic feet <br />Sediment Volume = 1.90 Ac-Ft = 82,764 cubic feet <br />