SW5210602_Design Calculations_20210616

Culvert Report
Hydraflow Express Extension for Autodesk@AutoCAD@ Civil 3D@ by Autodesk, Inc.
CULVERT1
Invert Elev Dn (ft)
= 272.75
Calculations
Pipe Length (ft)
= 40.00
Qmin (cfs)
Slope (%)
= 0.63
Qmax (cfs)
Invert Elev Up (ft)
= 273.00
Tailwater Elev (ft)
Rise (in)
= 15.0
Shape
= Circular
Highlighted
Span (in)
= 15.0
Qtotal (cfs)
No. Barrels
= 1
Qpipe (cfs)
n-Value
= 0.013
Qovertop (cfs)
Culvert Type
= Circular Concrete
Veloc Dn (ft/s)
Culvert Entrance
= Groove end projecting (C)
Veloc Up (ft/s)
Coeff. K,M,c,Y,k
= 0.0045, 2, 0.0317, 0.69, 0.2
HGL Dn (ft)
HGL Up (ft)
Embankment
Hw Elev (ft)
Top Elevation (ft)
= 275.00
Hw/D (ft)
Top Width (ft)
= 27.00
Flow Regime
Crest Width (ft)
= 25.00
El. (ft�
276 CC
275 CC
Z74 00
273 an
272 OU
271 OU
0
Wednesday, May 26 2021
= 2.40
= 2.40
= (dc+D)/2
= 2.40
= 2.40
= 0.00
= 2.44
= 3.96
= 273.68
= 273.62
= 273.88
= 0.70
= Inlet Control
CULVERT1 H� D.pth (ft�
30D
2.OD
I.OD
Don
-1 Ou
2OU
5 10 15 20 25 31) 35 40 45 50 55 60
CIFGUIUGUI-1 - HGL - Elb-k
R-h �ft)

Culvert Report
Hydraflow Express Extension for Autodesk@AutoCAD@ Civil 3D@ by Autodesk, Inc.
Culvert 2
Invert Elev Dn (ft)
= 256.50
Calculations
Pipe Length (ft)
= 85.00
Qmin (cfs)
Slope (%)
= 0.59
Qmax (cfs)
Invert Elev Up (ft)
= 257.00
Tailwater Elev (ft)
Rise (in)
= 18.0
Shape
= Circular
Highlighted
Span (in)
= 18.0
Qtotal (cfs)
No. Barrels
= 1
Qpipe (cfs)
n-Value
= 0.012
Qovertop (cfs)
Culvert Type
= Circular Concrete
Veloc Dn (ft/s)
Culvert Entrance
= Square edge w/headwall (C)
Veloc Up (ft/s)
Coeff. K,M,c,Y,k
= 0.0098, 2, 0.0398, 0.67, 0.5
HGL Dn (ft)
HGL Up (ft)
Embankment
Hw Elev (ft)
Top Elevation (ft)
= 261.00
Hw/D (ft)
Top Width (ft)
= 40.00
Flow Regime
Crest Width (ft)
= 40.00
El. (ft�
262 CC
261 CC
2W 00
25900
25a an
267 OU
253 CC
2-15 CC
0
Culwrt 2
10 20 30 40 DD 60 70 80 90 100 110 120
CIFGUIUGUI-1 — HGL — Elb-k
Wednesday, May 26 2021
= 4.80
= 4.80
= (dc+D)/2
= 4.80
= 4.80
= 0.00
= 3.24
= 4.70
= 257.67
= 257.84
= 258.25
= 0.84
= Inlet Control
H� D.pth (ft�
SOD
4.OD
3.OD
2.OD
I OD
O.OD
-1 on
2OU
130
R—h �ft)

Channel Report
Hydraflow Express Extension for Autodesk@AutoCAD@ Civil 3D@ by Autodesk, Inc.
Friday, Jun 4 2021
Northern Roadside
Ditch to Temporary Diversion
Ditch
Trapezoidal
Highlighted
Bottom Width (ft)
= 3.00
Depth (ft)
= 0.48
Side Slopes (z-1)
= 3.00,3.00
Q (Cfs)
= 6.620
Total Depth (ft)
= 2.00
Area (sqft)
= 2.13
Invert Elev (ft)
= 275.00
Velocity (ft/s)
= 3.11
Slope (%)
= 1.70
Wetted Perim (ft)
= 6.04
N-Value
= 0.030
Crit Depth, Yc (ft)
= 0.46
Top Width (ft)
= 5.88
Calculations
EGL (ft)
= 0.63
Compute by:
Known Q
Known Q (cfs)
= 6.62
Elev (ft)
278.00 ----1
277.50
277.00
276.50
276.00
275.50
275.00
274.50
2 4 6
Section
Depth (ft)
3.00
2.50
2.00
1.50
1.00
0.50
111MI
I I I I I 1 1 -0.50
8 10 12 14 16 18 20
Reach (ft)

Channel Report
Hydraflow Express Extension for Autodesk@AutoCAD@ Civil 3D@ by Autodesk, Inc.
Southern Roadside Ditch
Trapezoidal
Bottom Width (ft)
= 3.00
Side Slopes (z-1)
= 3.00,3.00
Total Depth (ft)
= 1.00
Invert Elev (ft)
= 269.00
Slope (%)
= 4.00
N-Value
= 0.030
Calculations
Compute by:
Known Q
Known Q (cfs)
= 2.3 9
Elev (ft)
271.00 ----1
270.50
270.00
269.50
020011818A
268.50
Section
Friday, Jun 4 2021
Highlighted
Depth (ft)
= 0.22
Q (Cfs)
= 2.390
Area (sqft)
= 0.81
Velocity (ft/s)
= 2.97
Wetted Perim (ft)
= 4.39
Crit Depth, Yc (ft)
= 0.25
Top Width (ft)
= 4.32
EGL (ft)
= 0.36
Depth (ft)
2.00
1.50
1.00
0.50
98118181
I I I I I I I I I I I . -0.50
1 2 3 4 5 6 7 8 9 10 11
Reach (ft)

Phobos — Phase I : Impervious Calculations
Gravel Road (including paved apron): SF = 43,236.24 = 1.00 AC
Substation Pad: 59,500.4 SF = 1.37 AC
Permanent Layclown areas:
2,076.85 SF +
2,500 SF =
4,576.85 SF
0.210 AC
Total:
1.00 + 1.37 + 0.210 AC = 2.58 AC
2.58 AC / 60.38 AC = 0.0427
4.27 % Built Upon Area
Calculations By: Shayne MacLean Signature: Date: 6/14/2021
Calculations By: Michael D. Ivy, PE