PERMFILE110230

• Permit No: C1981044
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: Pages 262-315o
• Section_Exhibit Name: Exhibit 18 Culvert Design Summary
• Media Type: D
• Archive: No

CULVERT 54
' benign .Discharge ' . _ .0.250 cfs *.
X
0.2
')rntrunce Loss'Coefficient =
'
'. •'Pil>c Length c <.45.000 feet:,: ,....
rime slehe = 0.50o r
Manning's n = 0.024 .
• ~ Maximum IIeadwater = 1.fl00•feet
Tailwater Dchth = 1.000 feet
Smallest Diawetcr Required to Puss Flow is G inches
PirRPORMANCE CURV);S:
' Diameter: 9 inches
F[eadwater Discharge Flow
(ft) (cfs)
--^---
--^---------
------ Control
-_----~---------------- TYPe.
-------^-
0
,
.la 0 00 0 .
0.3G 0.01 0
.
0. v4 0.01 ,
0
' 0.72 0.02 0
..0.90 0.02 0.
• l.oa 0.02 0
1.2G 0.03' 0 .
1.4•l . 0.03 0
1.G2 0.03 p
1.80. 0.0.1 0
,. Diameter: G inches
llcadwater Discharge Flow
" (ft) (cfs) Control Type
• 0.18 0 03 0 .
0.3G O.OG 0
0.51 0.09 Outlet (Subcritical) 1
0.72 0.11 Outlet (Subcritical) 1
0:00 0.14 Outlet (SuUcr.iCical) 1
1.Ofl 0.17 Out1eC (SuUeriticul) 1
]..2G 0.20 Out1eC (Subc•ritical) 1.
. ~ .. 1.44 ~~ '." ~ ..0.23 ~ ~` .DU t1Ct (JLLI>CrltlCal) ~ :.' ,
1.G2, 0.2G Uutlct (Su~criticul) 2
1.90 0.28 outlet (SuUcritical.) ?
Diameter: 8 inches '.
Hchdwnter Discharge ,;~<'. Plow
• (ft). (Cfs).'. Control, TyNe
0;18 0.09 Outlet (Subcriticul)
,..
1' •
• .:.., ;0:3G 0.18 - Outlet (SUbcritical),'.
,:
..:'1 '
'.0.5=1 0.2G Out1eC.(Subcrtical) 2'
` 10..72 0.35 Outlet (Sulicritical)'' 2 ,~
.0.90 0.44.
•
, Inlet (Supercritical) ~ 3
.:
'1,08 0.53 •, :
Inlet: (Sul'~crcriticul} ';
4, `
l
~'1.2G O. G2
Inlet' (Supercritical)'," '
4''°'~ ;:
*Same Watershed ds ~L'ulvert 45
Exhibit 18 -315d-. Revised 9/27/91