DESIGN OF TRAPEZOIDAL STORM WATER DRAIN.
( Actual Program is available in  Super Civil CD )
                           [A] Calculation Of Drain Capacity :
Run off (discharge) [m3/s] 
Depth of Drain  [m] 
Base Width of Drain  [m] 
Side Slope of Drain [ H : V ]
Slope of Drain [1: S]                                  1:
Drain Construction 
                     
 Velocity [m/s]:                       AREA of Drain [m2] :
 Hydraulic Mean Depth [m] : Perimeter of Drain : 
                                   [B] Calculation Of Run Off :
TRIBUTARY  AREA  [HECTOR] {1 hector = 10000 m2 }
INTENSITY OF RAIN FALL  [MM/HOUR] 
AREA CHARACTERISTICS
                                
RUN OFF COEFFICIENT :