2015-06-09_PERMIT FILE - C1996083A ‎(5)‎

• Permit No: C1996083A
• IBM Index Class Name: Permit File
• Doc Date: 6/9/2015
• Doc Name: Pages EXH 8-1 to EXH 8-97
• Section_Exhibit Name: Volume III Exhibit 08 Protection of The Hydrologic Balance
• Media Type: D
• Archive: Yes

411�5.1 mi"A P" s, DITCH
FINALLY, SMARTER SOLUTIONS IN WATER MANAGLMEN'r.4
FLOW CALCULATIONS
Flow rate calculations for the channel system
are based on the standard hydraulic flow
formula:
Q = (1.49/n) A R 2/3 S 1/2
Where:
Q = Total Flow
N = Manning's Coefficient of Friction (0.022)
A= area (sf)
R = hydraulic radius (ft) [R =A/ wetted
perimeter] S = slope ( %)
To calculate the hydraulic flow area & radius of
each SmartDitch size, dimensions are
provided below.
' ' pE m pd For More Information: www.smartditch.com / Hotline: 866 - 576 - 2783
Ex N 8_29:.,
© 2013 Penda Corp. 02/13
12" DEPTH
24" DEPTH
24" DEPTH
ITEM DESCRIPTION
ITEM #
TRAPEZOIDAL - IN
TRAPEZOIDAL - IN (MM)
SEMI - CIRCULAR - IN (MM)
Channel top
A
37.50
64.25
24.00
width
(952.50)
(1632)
(609.60)
Channel height
B
14.50
27.00
16.00
(interior)
(368.30)
(685.80)
(406.40)
Minimum
C
1.00
2.00
2.00
freeboard
(25.40)
(50.80)
(50.80)
Maximum flow
D
34.50
60.00
16.00
area top width
(876.30)
(1524)
(406.40)
Maximum
E
13.50
24.75
14.00
flow depth
(342.90)
(629)
(355.60)
Bottom channel
F
8.00
11.50
N/A
width (interior)
(203.20)
(292)
(Rounded Bottom)
Top shoulder width
G
4.50
5.25
5.00
(w /out knuckle)
(114.30)
(133)
(127.00)
' ' pE m pd For More Information: www.smartditch.com / Hotline: 866 - 576 - 2783
Ex N 8_29:.,
© 2013 Penda Corp. 02/13