2015-07-14_PERMIT FILE - C1996083A

• Permit No: C1996083A
• IBM Index Class Name: Permit File
• Doc Date: 7/14/2015
• 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

HYDRAULICS OF CULVERTS 161
Fig. 4-18. Inlet control nomograph for corrugated steel pipe culverts. The manufac-
turers recommend keeping HWJA to a maximum of 1.5 and preferably to•no more
than 1.0.
i
i
TR -91 E:XH -8 -31 ii 10/14
160.
10,000
I I )
LOSS COEFFICIENT Ke
166
8,000
FOR VARIOUS ENTRANCE (2)
156
a 6,000o 00
_ TYPES 6
(3)
144
4,000
KW ENTRANCE 5. 6•
SCALE COEFFICIENT
132
3,000
U 7YPE
5,
6,
(1) Headwal4 sq. rdgej or End 0.5
9
5.
—120
Section cantor , fit
o
2,000
dope 4.
tab
(7) Mhored to conform to slope 0.7
3.
4.
o
(� Projecting from fill 0.9
96
n
t
1,000
3'
3.
800
To asa soda (?) or (3) protect
64
600
horison1 m uale (1), rThheenn
M straight i mad line through 2•
-�
500
0 and Q scale; or reverse as
400
Iluarated. 2.
2.
72
a
300
d
13
60
200
1.5
1.5
c
_
S
Y
54
loo
u
a
Bo
°
3
o
=
60' `4g��T y ^_
42
_ 50
—40
EXAMPLE
`o
.71.0
-
m
O
36
30
oiam.0 -I8 in,-4 ft.
.
4 -70ds
.9
p
33
20
----- - -- v
u 8 B
Scale }1W MW T
30
0�
6
•
''
(1) lA 4.0 ft.
(n
27
to
(2) lA 4.0
4.4 •7 .7
8
24
7
6
'p
V
2t
6
4
6
-
'O
•6
t6
_p
1.5
15'
.. .5
1.0 1 0
`
HEADWATER DEPTH FOR
12
CORRUGATED-STEEL-PIPE CULVERTS
WITH INLET CONTROL
Fig. 4-18. Inlet control nomograph for corrugated steel pipe culverts. The manufac-
turers recommend keeping HWJA to a maximum of 1.5 and preferably to•no more
than 1.0.
i
i
TR -91 E:XH -8 -31 ii 10/14