RFI - Stormwater Management Plan

NODE 02 - Overland Flowpath 4m - BLOCK WALLS and MOWED GRASS BASE - GAP FLOW

Trapazoid Channel

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

xt x2
@
x
ao
Es
On0,0f9d
262025
Enter x1 - 0.07] (m)
Enter y1 4{(m)
Enter w | 4|(m)
Enter x2 - 0.01}(m)
Enter y2 4(m)
Enter S 0.005|(m/m) (calculate only for length of channel)
Sect No n din d2n w a Pp a‘.67  p*.667 q v s DxVv
(m) (m) (m) (m2) (m) (m3/sec) (mvs) (mm) _—_(m2/s)
1 0.013] 0.000[ 0.168] 0.002 0.000 0.168 0.000 0.304 0.000 0.048 0.00500 0.008
2 0.035] 0.168 0.168 4.000 0.672 4.000 0.516 2.520 0.413 0.615 0.00500 0.103 LESS THAN 0.4m2/s
3 0.013] 0.168 0.000 0.002 0.000 0.168 0.000 0.304 0.000 0.048 0.00500 0.008
4.0034 0.6723 4.3360 0.4134 m3/sec

DRAINAGE CHANNEL INVERT LEVEL (IL) 17.15
ADJACENT FLOOR LEVEL (FFL) 18.00
FREEBOARD ACHIEVED (m) 0.682 GREATER THAN 0.3m