2016-09-22_PERMIT FILE - C1980007 ‎(3)‎

• Permit No: C1980007
• IBM Index Class Name: Permit File
• Doc Date: 9/22/2016
• Doc Name: MISCELLANEOUS DRAINAGE
• Section_Exhibit Name: Exhibit 66 Miscellaneous Drainage
• Media Type: D
• Archive: No

MR -418 Calculations
Structure Name C5E-25
SEDCAD Structure #
67
Size (in)
12
Material
HDPE
Length (ft.)
320
Slope (%)
35
Manning's n
0.0130
Design Discharge (cfs)
2.75
Structure: D5E-6 - # 13
Manning's Equation for Gravity Flow
1.49* a * i
Q= n R
w/ Freeboard
Summary of Results
(ft.)
Manning's Coefficient (n)
Structure
Structure #
Design Discharge
Design Discharge
C5E-25
Combined
Discharge
Maximum
Discharge of
Structure
D5E-6
13
3.96
2.75
6.71
22.18
C5E-7
Stand Alone #1
13.7
2.75
16.45
28.38
D5E-4
6
15.95
2.75
18.7
38.82
C5E-6
Stand Alone #1
15.95
2.75
18.7
24.45
D5E-3
#4
20.34
2.75
23.09
44.88
D5E-2
#3
26.49
2.75
29.24
49.29
C5E-4
Stand Alone 91
21.35
2.75
24.1
24.45
C5E-3
#17
21.6
2.75
24.35
31.56
C5E-2
Stand Alone #1
21.6
2.75
24.35
24.45
Structure: D5E-6 - # 13
Manning's Equation for Gravity Flow
1.49* a * i
Q= n R
Maximum Flow - Q (cfs) 22.18
Design Discharge (cfs) 3.96
Combined Flow 6.71
(D5E-6 Design Flow + C5E-25 Design Flow)
Maximum Flow > Combined Flow? Yes
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w/ Freeboard
(ft.)
Manning's Coefficient (n)
0.017
Top Width (T)
4.12
Bottom Width (b)
0.00
Depth (h)
1.03
Z (ft.)
2.00
Area (ft)
2.12
Wetted Perimeter (ft.)
4.61
Hydraulic Radius - R (ft.)
0.46
Slope - S (ft./ft.)
0.04
Maximum Flow - Q (cfs) 22.18
Design Discharge (cfs) 3.96
Combined Flow 6.71
(D5E-6 Design Flow + C5E-25 Design Flow)
Maximum Flow > Combined Flow? Yes
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