PERMFILE112710

• Permit No: C1981029
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: APPENDIX 2.05.3-5B RIPRAP & CULVERT VELOCITY CALCULATIONS
• Media Type: D
• Archive: No

u
u
•
APPENDIX 2.05.3-5B (Continued)
Culvert No. 4
Da = 1.5 Q100 = .14 S = .05
Qn = (.14)(,024) = Y8 = .02
Yo~Spt. Yo3~ (.22) ~
= Yo = .23
Yo = 2 ,15
11` T: 5
~ _ .0871
R = .13
A2 = .0668 = .0668 x (1.5)2 = .15
do
y = 1.49 (R?) (5~ )
n 3

V = 3.6 fps
Da = pipe diameter in feet
Q =peak discharge (cubic ft/second)
So = slope
R =hydraulic radius
A =cross-sectional area
n =Manning coefficient (n) (.024)
V =velocity
- 239 -
(Rev. 5/86)