SW5190201_2019-07-12 NCDEQ Storm Ditch Calculations_7/16/2019

DITCH/CHANNEL CALCULATIONS
SUB DA
PERMISSIBLE
CALCULATED
STREET
STATION
A
Q10
SLOPE
V10
DEPTH
LINER *
SHEAR STRESS
SHEAR STRESS
Left (LT) 0+00 to end
FROM
TO
(Ac)
(CFS)
M
(FPS)
(FEET)
(PSF)
(PSF)
HOWARD COURT
LT
0+00
1+00
0.14
0.32
3.00
0.85
0.16
GRASS
4.000
0.300
LT
1+00
2+00
0.35
0.81
3.00
1.28
0.25
GRASS
4.000
0.470
LT
2+00
3+00
0.66
1.52
4.00
1.94
0.30
GRASS
4.000
0.750
LT
3+00
3+50
0.86
2.11
4.00
2.22
0.35
GRASS
4.000
0.880
LT
6+50
6+00
0.15
0.60
4.00
1.30
0.19
GRASS
4.000
0.480
LT
6+00
5+00
0.37
1.28
4.00
1.81
0.28
GRASS
4.000
0.690
LT
5+00
4+00
1.05
3.11
4.00
2.60
0.42
GRASS
4.000
1.050
LT
4+00
3+55
1.65
4.65
4.00
3.05
0.51
GRASS
4.000
1.260
LT
6+50
7+00
0.34
1.23
4.00
1.78
0.27
GRASS
4.000
0.680
LT
7+00
8+00
0.64
2.13
4.00
2.23
0.35
GRASS
4.000
0.880
LT
8+00
8+30
0.68
2.36
4.00
2.33
0.37
GRASS
4.000
0.920
LT
8+30
9+00
0.17
0.59
4.00
1.29
0.19
GRASS
4.000
0.480
LT
9+00
9+75
0.36
1.20
4.00
1.76
0.27
GRASS
4.000
0.670
Pipe Discharge Swale 1
FES #16
End
1.98
5.68
2.40
2.17
0.56
GRASS
4.000
1.010
Pipe Discharge Swale 2
FES #24
End
0.67
2.17
2.00
1.34
0.39
GRASS
4.000
0.480
Road Discharge Swale 3
9+75
End
0.45
1.40
5.50
1.88
0.21
GRASS
4.000
0.710
* NAG = NORTH AMERICAN GREEN OR EQUIVALENT
SEE ENCLOSED
CHANNEL ANALYSIS