SW4210302_Outlet Calculations_20210621

0
T
Outlet
pipe 4fo�]
= Do + 0.4La
diameter (Do) � La
Tail water 0.5Do
APRON DEPTH IS 1.5 TIMES THE STONE
DIAMETER (18" MINIMUM DEPTH) 90
20
10 FT
(MIN. LENGTH)
—> 10
0
80
O -
QQ� 70
-4
1
60
3 5 10 20 50 100 200 500
Discharge (ft 3/sec)
Curves may not be extrapolated.
Figure 8.06b Design of outlet protection from a round pipe flowing full, maximum tailwater condition (TW >_ 0.5 diameter).
STRUCTURE: DETENTION OUTLET LENGTH: loft
DISCHARGE: 14.33 cfs WIDTH: 6 ft
PIPE DIA. (D) 24 in d50: 0.5 ft
DEPTH: 1.5 ft
3
2
a�
N_
a
Cz
i
�O _n.
1 �
LO
O
0
0.50 FT
(MIN. d50)
.�0
1000
8.06.4 Rev. 12/93