Laserfiche WebLink
Culvert T -F1 <br />Manning's Equation <br />Flow In a 30" Half Culvert <br />Flow Depth D 0.80 <br />Slope S 0.33 <br />Mannings "N" N 0.015 <br />AREA = Number Derived in AutoCad <br />WETTED PERIMETER= (2 *Pi *r) /2 <br />Number derived in AutoCad <br />R= AREANVETTED PERIMETER <br />V= (1.49/N) *(R ".667) *(S ^.5) = <br />Q =AXV= <br />Q REQUIRED - Peak Discharge <br />Feet <br />Express as Decimal <br />Express as Decimal <br />*Flow from E. Diversion ditch (previously approved with TR -89) <br />1.35 FEET ^2 <br />3.01 FEET <br />0.45 <br />33.43 FT /SEC <br />45.14 CFS <br />21.75 CFS <br />Culvert T -F1 <br />Manning's Equation <br />Flow In a Trapezoidal "Smart Ditch" Channel <br />Depth <br />D <br />0.7 <br />Width <br />W <br />1.12 <br />Slope <br />S <br />0.25 <br />Mannings "N" <br />N <br />0.022 <br />Side Slope <br />X <br />1.3 <br />Feet <br />Feet <br />Express as Decimal <br />Express as Decimal <br />Slope = X:1 <br />AREA= (W *D) +(X *D ^2)= <br />WETTED PERIMETER= (W) +2 *[((X *D) ^2 +D ^2) "0.5] <br />R= AREANVETTED PERIMETER <br />V= (1.49/N) *(R ^.667) *(S ^.5) = <br />Q =AXV= <br />Q REQUIRED - Peak Dischar e <br />1.42 <br />FEET ^2 <br />3.42 <br />FEET <br />0.42 <br />18.87 <br />FT /SEC <br />26.81 <br />CFS <br />21.75 <br />CFS <br />MR -162 App. B -103 09/14 <br />