20060712 Ver 1_Stormwater Info_20060426

20060712
DWQ - 401 PERMIT
SUPPORTING CALCULATIONS
MANGUM FARM SUBDIVISION
GRANVILLE COUNTY, NORTH CAROLINA
for:
Sawyer Homes, Inc.
2014 S. Main Street
Wake Forest, NC 27587
[phone]
SITE TECHNOLOGIES, INC.
712-B ENON ROAD
OXFORD, NC 27565
[phone]
FAX [phone]
April 24, 2006
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SWALE A
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE A
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.015000 ft/ft
Left Side Slope 5.000000 H : V
Right Side Slope 4.000000 H : V
Discharge 0.24 cfs
Results
Depth 0.20 ft
Flow Area 0.18 ft2
Wetted Perimeter 1.87 ft
Top Width 1.82 ft
Critical Depth 0.18 ft
Critical Slope 0.030365 ft/ft
Velocity 1.30 ft/s
Velocity Head 0.03 ft
Specific Energy 0.23 ft
r Froude Number 0.72
Flow is subcritical.
04/22/06 FlowMaster v5.13
09:38:01 AM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
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SWALE B
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE B
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.015000 ft/ft
Left Side Slope 5.000000 H : V
Right Side Slope 4.000000 H : V
Discharge 0.16 cfs
Results
Depth 0.17 ft
Flow Area 0.14 ftz
Wetted Perimeter 1.61 ft
Top Width 1.57 ft
Critical Depth 0.15 ft
Critical Slope 0.032047 ft/ft
Velocity 1.17 ft/s
Velocity Head 0.02 ft
Specific Energy 0.20 ft
Froude Number 0.70
Flow is subcritical.
04/22/06 FlowMaster v5.13
09:41:38 AM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

SWALE C
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE C
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.015000 ft/ft
Left Side Slope 3.000000 H : V
Right Side Slope 4.000000 H : V
Discharqe 1.58 cfs
Results
Depth 0.45 ft
Flow Area 0.72 ft2
Wetted Perimeter 3.30 ft
Top Width 3.17 ft
Critical Depth 0.42 ft
Critical Slope 0.023318 ft/ft
Velocity 2.20 ft/s
Velocity Head 0.07 ft
Specific Energy 0.53 ft
Froude Number 0.81
Flow is subcritical.
04/22/06 FlowMaster v5.13
09:48:41 AM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

SWALE D
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE D
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth

Input Data
Mannings Coefficient 0.030
Channel Slope 0.036000 ft/ft
Left Side Slope 2.000000 H : V
Right Side Slope 4.000000 H : V
Discharge 1.31 cfs

Results
Depth 0.38 ft
Flow Area 0.44 ft2
Wetted Perimeter 2.43 ft
Top Width 2.29 ft
Critical Depth 0.41 ft
Critical Slope 0.024000 ft/ft
Velocity 3.00 ft/s
Velocity Head 0.14 ft
Specific Energy 0.52 ft
Froude Number 1.21
Flow is supercritical.
04/22/06 FlowMaster v5.13
04:39:07 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
7
SWALE E
Worksheet for Triangular Channel
Project Description
Project File 0haestad\fmw\0609.fm2
Worksheet SWALE E
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.060000 ft/ft
Left Side Slope 6.000000 H : V
Right Side Slope 4.000000 H : V
Discharge 0.29 cfs
Results
Depth 0.16 ft
Flow Area 0.13 ftZ
Wetted Perimeter 1.64 ft
Top Width 1.61 ft
Critical Depth 0.18 ft
Critical Slope 0.029864 ft/ft
Velocity 2.23 ft/s
Velocity Head 0.08 ft
Specific Energy 0.24 ft
Froude Number 1.39
Flow is supercritical.
04/22/06 FlowMaster v5.13
11:09:12 AM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
? 7
SWALE F
E
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE F
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.040000 ft/ft
Left Side Slope 4.000000 H : V
Right Side Slope 5.000000 H : V
Discharge 0.29 cfs

Results
Depth 0.18 ft
Flow Area 0.15 ftz
Wetted Perimeter 1.67 ft
Top Width 1.63 ft
Critical Depth 0.19 ft
Critical Slope 0.0296 12 ft/ft
Velocity 1.97 ft/s
Velocity Head 0.06 ft
Specific Energy 0.24 ft
Froude Number 1.15
Flow is supercritical.
04/22/06 FlowMaster v5.13
11:17:16 AM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

SWALE G @ LEVEL SPDR 9
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE G
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.037000 ft/ft
Left Side Slope 4.000000 H : V
Right Side Slope 4.000000 H : V
I Discharge 0.98 cfs
r
Results
Depth 0.30 ft
Flow Area 0.37 ft2
Wetted Perimeter 2.50 ft
Top Width 2.43 ft
Critical Depth 0.33 ft
Critical Slope 0.024978 ft/ft
Velocity 2.66 ft/s
Velocity Head 0.11 ft
Specific Energy 0.41 ft
Froude Number 1.20
Flow is supercritical.
04/22/06 FlowMaster v5.13
11:35:12 AM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

SWALE H @ LEVER SPDR 10
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE H
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.110000 ft/ft
Left Side Slope 8.000000 H : V
Right Side Slope 5.000000 H : V
Discharge 1.82 cfs
Results
Depth 0.26 ft
Flow Area 0.44 ft2
Wetted Perimeter 3.41 ft
Top Width 3.37 ft
Critical Depth 0.34 ft
Critical Slope 0.023955 ft/ft
Velocity 4.17 ft/s
Velocity Head 0.27 ft
Specific Energy 0.53 ft
Froude Number 2.04
Flow is supercritical.
04/22/06 FlowMaster v5.13
12:08:18 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
a z
SWALE H @ STA 6+50
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE H @ STA 6+50
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.044000 ft/ft
Left Side Slope 10.000000 H : V
Right Side Slope 5.000000 H : V
Discharge 1.80 cfs
Results
Depth 0.29 ft
Flow Area 0.63 ftz
Wetted Perimeter 4.40 ft
11 Top Width 4.35 ft
Critical Depth 0.32 ft
Critical Slope 0.024373 ft/ft
Velocity 2.85 ft/s
Velocity Head 0.13 ft
Specific Energy 0.42 ft
Froude Number 1.32
Flow is supercritical.
04/22/06 FlowMaster v5.13
12:17:50 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
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SWALE
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmwk06O9.fm2
Worksheet SWALE I
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.080000 ft/ft
Left Side Slope 5.000000 H : V
Right Side Slope 5.000000 H : V
Discharge 0.16 cfs
Results
Depth 0.12 ft
Flow Area 0.07 ft2
Wetted Perimeter 1.25 ft
Top Width 1.22 ft
Critical Depth 0.14 ft
Critical Slope 0.032305 ft/ft
Velocity 2.14 ft/s
Velocity Head 0.07 ft
Specific Energy 0.19 ft
Froude Number 1.53
Flow is supercritical.
04/22/06 FlowMaster v5.13
12:39:31 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
I
SWALE J
Worksheet for Trapezoidal Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE J
Flow Element Trapezoidal Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.033000 ft/ft
Left Side Slope 5.000000 H : V
Right Side Slope 6.000000 H : V
Bottom Width 2.00 ft
Discharge 3.74 cfs
Results
Depth 0.31 ft
Flow Area 1.17 ftZ
Wetted Perimeter 5.51 ft
Top Width 5.45 ft
Critical Depth 0.35 ft
Critical Slope 0.021597 ft/ft
Velocity 3.20 ft/s
Velocity Head 0.16 ft
Specific Energy 0.47 ft
i Froude Number 1.22
Flow is supercritical.
04/22/06 FlowMaster v5.13
01:09:03 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
r
SWALE K
Worksheet for Trapezoidal Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE K
Flow Element Trapezoidal Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.040000 ft/ft
Left Side Slope 4.000000 H : V
Right Side Slope 6.000000 H : V
Bottom Width 2.00 ft
Discharge 4.54 cfs
Results
Depth 0.33 ft
Flow Area 1.23 ftZ
Wetted Perimeter 5.42 ft
Top Width 5.35 ft
Critical Depth 0.39 ft
Critical Slope 0.020844 ft/ft
Velocity 3.69 ft/s
Velocity Head 0.21 ft
Specific Energy 0.55 ft
Froude Number 1.36
I Flow is supercritical.
04/22/06 FlowMaster v5.13
01:34:45 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
a
SWALE L
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE L
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.056000 ft/ft
Left Side Slope 3.000000 H : V
Right Side Slope 5.000000 H : V
Discharge 3.47 cfs
Results
Depth 0.45 ft
` Flow Area 0.82 ft2
Wetted Perimeter 3.73 ft
Top Width 3.61 ft
Critical Depth 0.54 ft
Critical Slope 0.021154 ft/ft
Velocity 4.25 ft/s
Velocity Head 0.28 ft
Specific Energy 0.73 ft
Froude Number 1.58
Flow is supercritical.
04/22/06 FlowMaster v5.13
12:57:40 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
SWALE M
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmwX0609.fm2
Worksheet SWALE M
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.060000 ft/ft
Left Side Slope 10.000000 H : V
Right Side Slope 2.500000 H : V
Discharge 0.19 cfs
Results
Depth 0.13 ft
Flow Area 0.10 ft2
Wetted Perimeter 1.61 ft
Top Width 1.58 ft
Critical Depth 0.14 ft
Critical Slope 0.032506 ft/ft
Velocity 1.90 ft/s
Velocity Head 0.06 ft
Specific Energy 0.18 ft
Froude Number 1.33
Flow is supercritical.
04/22/06 FlowMaster v5.13
01:03:55 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
7
SWALE N
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE N
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.086000 ft/ft
Left Side Slope 2.000000 H : V
Right Side Slope 2.500000 H : V
Discharge 5.12 cfs
Results
Depth 0.61 ft
Flow Area 0.83 ft2
Wetted Perimeter 2.99 ft
Top Width 2.73 ft
Critical Depth 0.80 ft
Critical Slope 0.0201 19 ft/ft
Velocity 6.17 ft/s
Velocity Head 0.59 ft
Specific Energy 1.20 ft
Froude Number 1.98
Flow is supercritical.

04/22/06 FlowMaster v5.13
02:07:09 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

r
SWALE N STA 4+50
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE N STA 4+50
Flow Element Triangular-Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.050000 ft/ft
Left Side Slope 4.000000 H : V
Right Side Slope 4.000000 H : V
Discharge 0.76 cfs
Results
Depth 0.26 ft
Flow Area 0.27 ft2
Wetted Perimeter 2.15 ft
Top Width 2.09 ft
Critical Depth 0.30 ft
Critical Slope 0.025838 ft/ft
Velocity 2.79 ft/s
Velocity Head 0.12 ft
Specific Energy 0.38 ft
Froude Number 1.36
Flow is supercritical.
04122106 FlowMaster v5.13
03:07:29 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
r
SWALE O @ CULVERT 4
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE O
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.065000 ft/ft
Left Side Slope 4.000000 H : V
Right Side Slope 5.000000 H : V
Discharge 0.44 cfs
Results
Depth 0.19 ft
j Flow Area 0.17 ft2
Wetted Perimeter 1.78 ft
Top Width 1.74 ft
Critical Depth 0.23 ft
Critical Slope 0.0280 11 ft/ft
Velocity 2.62 fus
Velocity Head 0.11 ft
Specific Energy 0.30 ft
Froude Number 1.48
Flow is supercritical.
04122/06 FlowMaster v5.13
03:15:53 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
SWALE O @ STA 4+50
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE 0 @ STA 4+50
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.050000 ft/ft
Left Side Slope 5.000000 H : V
Right Side Slope 4.000000 H : V
Discharge 0.22 cfs
Results
Depth 0.16 ft
Flow Area 0.11 ft2
Wetted Perimeter 1.44 ft
Top Width 1.41 ft
Critical Depth 0.17 ft
Critical Slope 0.030724 ft/ft
Velocity 1.99 ft/s
Velocity Head 0.06 ft
Specific Energy 0.22 ft
Froude Number 1.26
Flow is supercritical.
04122/06 FlowMaster v5.13
03:20:51 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

SWALE P @ LEVEL SPREADER
Worksheet for Trapezoidal Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE P @ LEVEL SPDR
Flow Element Trapezoidal Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.047000 ft/ft
Left Side Slope 3.000000 H : V
Right Side Slope 10.000000 H : V
Bottom Width 2.00 ft
Discharge 5.33 cfs
Results
Depth 0.33 ft
Flow Area 1.38 ftz
Wetted Perimeter 6.38 ft
Top Width 6.31 ft
Critical Depth 0.40 ft
Critical Slope 0.020961 ft/ft
Velocity 3.87 ft/s
Velocity Head 0.23 ft
Specific Energy 0.56 ft
Froude Number 1.46
Flow is supercritical.
04/22106 FlowMaster v5.13
03:25:24 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
SWALE Q
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE Q
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.048000 ft/ft
Left Side Slope 3.000000 H : V
Right Side Slope 4.000000 H : V
Discharge 0.84 cfs
Results
Depth 0.29 ft
Flow Area 0.29 ft2
Wetted Perimeter 2.10 ft
Top Width 2.01 ft
Critical Depth 0.32 ft
Critical Slope 0.025367 ft/ft
Velocity 2.90 ft/s
Velocity Head 0.13 ft
Specific Energy 0.42 ft
Froude Number 1.35
Flow is supercritical.
04/22/06 FlowMaster v5.13
04:45:43 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

SWALE Q @ STA 3+00
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE Q @ STA 3+00
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth

Input Data
Mannings Coefficient 0.030
Channel Slope 0.025000 ft/ft
Left Side Slope 4.000000 H : V
Right Side Slope 4.000000 H : V
Discharge 0.31 cfs
Results
Depth 0.21 ft
Flow Area 0.18 ft2
Wetted Perimeter 1.75 ft
Top Width 1.70 ft
Critical Depth 0.21 ft
Critical Slope 0.0291 15 ft/ft
Velocity 1.72 ft/s
Velocity Head 0.05 ft
Specific Energy 0.26 ft
Froude Number 0.93
Flow is subcritical.
04/22/06 FlowMaster v5.13
04:49:08 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

SWALE R @ LEVEL SPDR
Worksheet for Trapezoidal Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE R @ LEVEL SPDR
Flow Element Trapezoidal Channel
Method Manning's Formula
Solve For Channel Depth

Input Data
Mannings Coefficient 0.030
Channel Slope 0.090000 ft/ft
Left Side Slope 3.000000 H : V
Right Side Slope 3.000000 H : V
Bottom Width 2.00 ft
Discharge 2.41 cfs
Results
Depth 0.21 ft
Flow Area 0.54 ft2
Wetted Perimeter 3.31 ft
Top Width 3.24 ft
Critical Depth 0.30 ft
Critical Slope 0.022104 ft/ft
Velocity 4.45 ft/s
Velocity Head 0.31 ft
Specific Energy 0.51 ft
Froude Number 1.92
Flow is supercritical.
04/22/06 FlowMaster v5.13
04:56:20 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

SWALE S @ LEVEL SPDR
Worksheet for Trapezoidal Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE S @ LEVEL SPDR
Flow Element Trapezoidal Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.160000 ft/ft
Left Side Slope 3.000000 H : V
Right Side Slope 3.000000 H : V
Bottom Width 2.00 ft
Discharge 1.54 cfs
i Results
Depth 0.14 ft
Flow Area 0.33 ft2
Wetted Perimeter 2.86 ft
Top Width 2.82 ft
Critical Depth 0.23 ft
Critical Slope 0.0236 87 ft/ft
Velocity 4.68 ft/s
Velocity Head 0.34 ft
Specific Energy 0.48 ft
Froude Number 2.42
Flow is supercritical.
04/22/06 FlowMaster v5.13
05:24:16 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

NORTH AMERICAN GREEN EROSION CONTROL MATERIALS DESIGN SOFTWARE VERSION 4.2
NORTH AMERICAN GREEN CHANNEL PROTECTION - ENGLISH/S.I.
USER SPECIFIED CHANNEL LINING BACK-UP COMPUTATIONS
PROJECT NAME: MANGUM FARM SUBDIVISION PROJECT NO.: 0609
COMPUTED BY: TAS DATE: 4/22/2006
FROM STATION/REACH: SWALE S TO STATION/REACH:
DRAINAGE AREA: 0.51 DESIGN FREQUENCY: 10YR

INPUT PARAMETERS
Channel Discharge : 1.5 cfs (.04 MA 3/s)
Peak Flow Period : 24 hours
Channel Slope : 0.16 ft/ft (0.16 m/m)
Channel Bottom Width : 2.0 ft (.61 m)
Left Side Slope :3:1
Right Side Slope : 3:1
Channel Lining : SC250 Staple E
Permi. Shear(Tp) :2.50 psf (119.7 Pa)
Phase = 1
CALCULATIONS
Initial Depth Estimate = 0.16 * (1.5 /(0.160^0.5))^0.375 = 0.26 ft (.08 m)
Final Channel Depth (after 8 iterations) =.16 ft (0.05 m)
Flow Area = (2.0 * 0.2)+(0.5 *0.16^2 * (3.0+3.0)) = 0.4 sq.ft (0.0 m^2)
Wet Per. =2.0 +(0.2*(((3.0^2)+1)^.5 +((3.0"2)+1)^.5)) = 3.0 ft (0.9 m)
Hydraulic Radius = (0.4 / 3.0) = 0.1 ft (0.0 m)
Channel Velocity =(1.486/0.040)*(0.1"0.667)*(0.160^.5) = 3.8 fps (1.2 m/s)
Channel Effective Manning's Roughness = 0.040
Calculated Shear (Td) = 62.4 * 0.16 * 0.160 = 1.58 psf (75.7 Pa)
Safety Factor = (Tp/Td) _ (2.50 /1.58) = 1.58

SWALE T
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE T
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.031000 ft/ft
Left Side Slope 4.500000 H : V
Right Side Slope 6.000000 H : V
Discharge 1.22 cfs
Results
Depth 0.31 ft
Flow Area 0.49 ftZ
Wetted Perimeter 3.28 ft
Top Width 3.22 ft
Critical Depth 0.32 ft
Critical Slope 0.024748 ft/ft
Velocity 2.47 ft/s
Velocity Head 0.09 ft
Specific Energy 0.40 ft
Froude Number 1.11
Flow is supercritical.
04/23106 FlowMaster v5.13
09:40:10 AM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
c
SWALE U
Worksheet for Triangular Channel
Project Description
Project File c:\haestadlfmw\0609.fm2
Worksheet SWALE U
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.045000 ft /ft
Left Side Slope 5.000000 H : V
Right Side Slope 4.000000 H : V
Discharge 0.72 cfs
Results
Depth 0.25 ft
Flow Area 0.28 ft2
Wetted Perimeter 2.30 ft
Top Width 2.24 ft
Critical Depth 0.28 ft
Critical Slope 0.026230 ft/ft
Velocity 2.58 ft/s
Velocity Head 0.10 ft
Specific Energy 0.35 ft
Froude Number 1.29
Flow is supercritical.
04/23/06 FlowMaster v5.13
09:45:48 AM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
4 1
SWALE V
Worksheet for Trapezoidal Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE V
Flow Element Trapezoidal Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.025000 ft/ft
Left Side Slope 3.000000 H : V
Right Side Slope 3.000000 H : V
Bottom Width 2.00 ft
Discharge 3.26 cfs
Results
Depth 0.35 ft
Flow Area 1.05 ftZ
Wetted Perimeter 4.18 ft
Top Width 4.07 ft
Critical Depth 0.36 ft
Critical Slope 0.021133 ft/ft
Velocity 3.11 ft/s
Velocity Head 0.15 ft
Specific Energy 0.50 ft
Froude Number 1.08
Flow is supercritical.
04/23/06 FlowMaster v5.13
09:51:05 AM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
4
SWALE W
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE W
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.067000 ft/ft
Left Side Slope 3.500000 H : V
Right Side Slope 5.000000 H : V
Discharge 0.60 cfs
Results
Depth 0.22 ft
Flow Area 0.21 ft2
Wetted Perimeter 1.93 ft
Top Width 1.88 ft
Critical Depth 0.26 ft
Critical Slope 0.026784 ft/ft
Velocity 2.90 ft/s
Velocity Head 0.13 ft
Specific Energy 0.35 ft
Froude Number 1.54
Flow is supercritical.
04/23/06 FlowMaster v5.13
11:15:16 AM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
f
SWALE X
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE X
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.013000 ft/ft
Left Side Slope 4.000000 H : V
Right Side Slope 4.000000 H : V
Discharge 1.70 cfs

Results
Depth 0.45 ft
Flow Area 0.83 ft2
Wetted Perimeter 3.75 ft
Top Width 3.63 ft
Critical Depth 0.41 ft
Critical Slope 0.023206 ft/ft
Velocity 2.06 fus
Velocity Head 0.07 ft
Specific Energy 0.52 ft
Froude Number 0.76
Flow is subcritical.
04/23106 FlowMaster v5.13
11:21:17 AM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
4
SWALE Y
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE Y
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.063000 ft/ft
Left Side Slope 3.500000 H : V
Right Side Slope 4.000000 H : V
Discharge 0.72 cfs
Results
Depth 0.25 ft
Flow Area 0.24 ftZ
Wetted Perimeter 1.95 ft
Top Width 1.88 ft
Critical Depth 0.30 ft
Critical Slope 0.025946 ft/ft
Velocity 3.05 ft/s
Velocity Head 0.14 ft
Specific Energy 0.40 ft
Froude Number 1.52
Flow is supercritical.
04/23/06 FlowMaster v5.13
11:26:08 AM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
f 14
SWALE Z
Worksheet for Trapezoidal Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE Z
Flow Element Trapezoidal Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.016000 ft/ft
Left Side Slope 3.000000 H : V
Right Side Slope 3.000000 H : V
Bottom Width 2.00 ft
Discharge 3.10 cfs
Results
Depth 0.38 ft
Flow Area 1.18 ftZ
Wetted Perimeter 4.39 ft
Top Width 4.27 ft
Critical Depth 0.35 ft
Critical Slope 0.0212 89 ft/ft
Velocity 2.62 ft/s
Velocity Head 0.11 ft
Specific Energy 0.48 ft
Froude Number 0.88
Flow is subcritical.
04/23/08 FlowMaster v5.13
11:32:28 AM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
# i
- SWALE AA AT CULVERT 8
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE AA
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.070000 ft/ft
Left Side Slope 3.500000 H : V
Right Side Slope 4.000000 H : V
Discharge 1.53 cfs
Results
Depth 0.33 ft
Flow Area 0.40 ft2
Wetted Perimeter 2.54 ft
Top Width 2.45 ft
Critical Depth 0.40 ft
Critical Slope 0.023466 ft/ft
Velocity 3.83 ft/s
Velocity Head 0.23 ft
Specific Energy 0.55 ft
Froude Number 1.67
Flow is supercritical.
04/23/06 FlowMaster v5.13
12:23:33 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
t;
CULVERT AA STA 4+50
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet CULVERT AA @ STA 4+50
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.027000 ft/ft
Left Side Slope 4.000000 H : V
Right Side Slope 4.000000 H : V
Discharge 0.75 cfs
Results
Depth 0.29 ft
Flow Area 0.34 ft2
Wetted Perimeter 2.40 ft
Top Width 2.33 ft
Critical Depth 0.29 ft
Critical Slope 0.025884 ft/ft
Velocity 2.21 ft/s
Velocity Head 0.08 ft
Specific Energy 0.37 ft
Froude Number 1.02
Flow is supercritical.
04/23/06 FlowMaster v5.13
12:30:45 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

SWALE BB @ CULVERT 9
Worksheet for Triangular Channel
Project Description
Project File c:\haestadkfmwk06O9.fm2
Worksheet SWALE BB @ CULVERT 9
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.083000 ft/ft
Left Side Slope 12.000000 H : V
Right Side Slope 4.000000 H : V
Discharge 1.09 cfs
Results
Depth 0.21 ft
Flow Area 0.35 ft2
Wetted Perimeter 3.37 ft
Top Width 3.33 ft
Critical Depth 0.26 ft
Critical Slope 0.026298 ft/ft
Velocity 3.14 ft/s
Velocity Head 0.15 ft
Specific Energy 0.36 ft
Froude Number 1.71
Flow is supercritical.
04/23/06 FlowMaster v5.13
12:40:55 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
i
SWALE BB STA 7+50
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE BB STA 7+50
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.047000 ft/ft
Left Side Slope 3.000000 H : V
Right Side Slope 4.000000 H : V
Discharge 0.49 cfs
Results
Depth 0.24 ft
Flow Area 0.19 ft2
Wetted Perimeter 1.72 ft
Top Width 1.65 ft
Critical Depth 0.26 ft
Critical Slope 0.027262 ft/ft
Velocity 2.51 ft/s
Velocity Head 0.10 ft
Specific Energy 0.33 ft
Froude Number 1.29
Flow is supercritical.
04/23/06 FlowMaster v5.13
12:45:50 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

SWALE CC @ LEVEL SPDR 10
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE CC
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.095000 ft/ft
Left Side Slope 2.500000 H : V
Right Side Slope 7.000000 H : V
Discharge 0.70 cfs
Results
Depth 0.21 ft
Flow Area 0.21 ftZ
Wetted Perimeter 2.05 ft
Top Width 2.00 ft
Critical Depth 0.27 ft
Critical Slope 0.0266 19 ft/ft
Velocity 3.34 ft/s
Velocity Head 0.17 ft
Specific Energy 0.38 ft
Froude Number 1.82
Flow is supercritical.
04/23/06 FlowMaster v5.13
01:03:01 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
rt
SWALE CC STA 8+00
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE CC STA 8+00
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.052000 ft/ft
Left Side Slope 3.000000 H : V
Right Side Slope 4.000000 H : V
Discharge 0.38 cfs
Results
Depth 0.21 ft
Flow Area 0.16 ft2
Wetted Perimeter 1.53 ft
Top Width 1.47 ft
Critical Depth 0.24 ft
Critical Slope 0.028199 ft/ft
Velocity 2.45 ft/s
Velocity Head 0.09 ft
Specific Energy 0.30 ft
Froude Number 1.33
Flow is supercritical.
04/23/06 FlowMaster v5.13
01:07:05 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

NORTH AMERICAN GREEN EROSION CONTROL MATERIALS DESIGN SOFTWARE VERSION 4.2
NORTH AMERICAN GREEN CHANNEL PROTECTION - ENGLISH/S.I.
USER SPECIFIED CHANNEL LINING BACK-UP COMPUTATIONS
*****************************************************************************
PROJECT NAME: MANGUM FARM SUBDIVISION PROJECT NO.: 0609
COMPUTED BY: TAS DATE: 4/23/2006
FROM STATION/REACH: SWALE DD AT LEVEL SPREADER TO STATION/REACH:
DRAINAGE AREA: 5.42 DESIGN FREQUENCY: 10 YR
*****************************************************************************
INPUT PARAMETERS
*****************************************************************************
Channel Discharge : 10.0 cfs (.28 MA 3/s)
Peak Flow Period : 24 hours
Channel Slope :0.08 ft/ft (0.08 m/m)
Channel Bottom W idth : 2.0 ft (.61 m)
Left Side Slope :4:1
Right Side Slope : 4:1
Channel Lining : SC250 Staple E
Permi. Shear(Tp) :2.50 psf (119.7 Pa)
Phase = 1
*****************************************************************************
CALCULATIONS
*****************************************************************************
Initial Depth Estimate = 0.16 * (10.0 /(0.080^0.5))^0.375 = 0.61 ft (.19 m)
Final Channel Depth (after 9 iterations) =.5 ft (0.15 m)
Flow Area = (2.0 * 0.5)+(0.5 *0.50^2 * (4.0+4.0)) = 2.0 sq.ft (0.2 m^2)
Wet Per. =2.0 +(0.5*(((4.OA2)+1)^.5 +((4.0^2)+1)^.5)) = 6.1 ft (1.9 m)
Hydraulic Radius = (2.0 / 6.1) = 0.3 ft (0.1 m)
Channel Velocity =(1.486/0.040)*(0.3^0.667)*(0.080".5) = 5.0 fps (1.5 m/s)
Channel Effective Manning's Roughness = 0.040
Calculated Shear (Td) = 62.4 * 0.50 * 0.080 = 2.50 psf (119.7 Pa)
Safety Factor = (Tp/Td) _ (2.50 /2.50) = 1.00
\
SWALE EE @ LEVEL SPDR 11
Worksheet for Trapezoidal Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
,Worksheet SWALE EE @ LEVEL SPDR 11
Flow Element Trapezoidal Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.080000 ft/ft
Left Side Slope 4.000000 H : V
Right Side Slope 4.000000 H : V
Bottom Width 2.00 ft
Discharge 10.01 cfs
Results
Depth 0.43 ft
Flow Area 1.63 ftz
Wetted Perimeter 5.59 ft
Top Width 5.48 ft
Critical Depth 0.62 ft
Critical Slope 0.018321 ft/ft
Velocity 6.15 ft/s
Velocity Head 0.59 ft
Specific Energy 1.02 ft
Froude Number 1.99
Flow is supercritical.
04/23/06 FlowMaster v5.13
03:23:37 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

SWALE FF @ CULVERT 10
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE FF @ CULVERT 10
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.032000 ft/ft
Left Side Slope 4.000000 H : V
Right Side Slope 3.000000 H : V
Discharge 1.63 cfs
Results
Depth 0.40 ft
Flow Area 0.55 ftZ
Wetted Perimeter 2.90 ft
Top Width 2.79 ft
Critical Depth 0.42 ft
Critical Slope 0.023225 ft/ft
Velocity 2.94 ft/s
Velocity Head 0.13 ft
Specific Energy 0.53 ft
Froude Number 1.16
Flow is supercritical.
04/23/06 FlowMaster v5.13
03:27:03 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
F
SWALE FF @ STA 0+50 DIAMOND DR
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE FF @ STA 0+50 DIAMOND DR
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.065000 ft/ft
Left Side Slope 4.000000 H : V
Right Side Slope 5.000000 H : V
Discharge 0.22 cfs
Results
Depth 0.15 ft
Flow Area 0.10 ft2
Wetted Perimeter 1.37 ft
Top Width 1.34 ft
Critical Depth 0.17 ft
Critical Slope 0.0307 12 ft/ft
Velocity 2.20 ft/s
Velocity Head 0.08 ft
Specific Energy 0.22 ft
Froude Number 1.42
Flow is supercritical.
04/23/06
03:30:44 PM
FlowMaster v5.13
Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
x
SWALE HH @ CULVERT 10
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE HH @ CULVERT 10
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.029000 ft/ft
Left Side Slope 4.500000 H : V
Right Side Slope 3.000000 H : V
Discharge 0.83 cfs
Results
Depth 0.31 ft
Flow Area 0.35 ft2
Wetted Perimeter 2.38 ft
Top Width 2.30 ft
Critical Depth 0.31 ft
Critical Slope 0.025496 ft/ft
Velocity 2.36 ft/s
Velocity Head 0.09 ft
Specific Energy 0.39 ft
Froude Number 1.06
Flow is supercritical.
04/23/06 FlowMaster v5.13
03:41:21 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

SWALE GG
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE GG
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.050000 ft/ft
Left Side Slope 3.500000 H : V
Right Side Slope 2.000000 H : V
Discharge 0.32 cfs
Results
Depth 0.22 ft
Flow Area 0.13 ftZ
Wetted Perimeter 1.29 ft
Top Width 1.20 ft
Critical Depth 0.24 ft
Critical Slope 0.028935 ft/ft
Velocity 2.43 ft/s
Velocity Head 0.09 ft
Specific Energy 0.31 ft
Froude Number 1.29
Flow is supercritical.
04/23106 FlowMaster v5.13
03:42:40 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
3 =t
SWALE If @ CULVERT 10
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE II
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.059000 ft/ft
Left Side Slope 3.000000 H : V
Right Side Slope 3.000000 H : V
Discharge 0.60 cfs
Results
Depth 0.26 ft
Flow Area 0.20 fts
Wetted Perimeter 1.64 ft
Top Width 1.56 ft
Critical Depth 0.30 ft
Critical Slope 0.026440 ft/ft
Velocity 2.98 ft/s
Velocity Head 0.14 ft
Specific Energy 0.40 ft
Froude Number 1.46
Flow is supercritical.
04/23/06 FlowMaster v5.13
03:48:44 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

SWALE II @ STA 12+00
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE II @ STA 12+00
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.055000 ft/ft
Left Side Slope 4.000000 H : V
Right Side Slope 3.000000 H : V
Discharge 0.35 cfs
Results
Depth 0.20 ft
Flow Area 0.14 ftZ
Wetted Perimeter 1.47 ft
Top Width 1.41 ft
Critical Depth 0.23 ft
Critical Slope 0.028512 ft/ft
Velocity 2.45 ft/s
Velocity Head 0.09 ft
Specific Energy 0.30 ft
Froude Number 1.36
Flow is supercritical.
04/23/06 FlowMaster v5.13
03:53:01 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
T
??*A'*'k***'k?l"Rtk'k'1t*?t"A'ytA'*'k***'k**]l"A"A"kA'*****'A"k'A"A"?"?"k1F'A't*Yt]ktt*]k*ft*******'kA'*'k?1'9t*'?']t*'k**'1k'k'k
NORTH AMERICAN GREEN EROSION CONTROL MATERIALS DESIGN SOFTWARE VERSION 4.2
NORTH AMERICAN GREEN CHANNEL PROTECTION - ENGLISH/S.I.
USER SPECIFIED CHANNEL LINING BACK-UP COMPUTATIONS
PROJECT NAME: MANGUM FARM SUBDIVISION PROJECT NO.: 0609
COMPUTED BY: TAS DATE: 4/23/2006
FROM STATION/REACH: SWALE JJ AT LEVEL SPREADER TO STATION/REACH:
DRAINAGE AREA: 3.49 AC DESIGN FREQUENCY: 10 YR

INPUT PARAMETERS
Channel Discharge : 7.7 cfs (.22 m^3/s)
Peak Flow Period : 24 hours
Channel Slope :0.091 ft/ft (0.091 m/m)
Channel Bottom Width : 2.0 ft (.61 m)
Left Side Slope :4:1
Right Side Slope : 4:1
Channel Lining : SC250 Staple E
Permi. Shear(Tp) :2.50 psf (119.7 Pa)
Phase = 1
CALCULATIONS
Initial Depth Estimate = 0.16 * (7.7 /(0.091^0.5))^0.375 = 0.54 ft (.16 m)
Final Channel Depth (after 9 iterations) =.43 ft (0.13 m)
Flow Area = (2.0 * 0.4)+(0.5 *0.43^2 * (4.0+4.0)) = 1.6 sq.ft (0.1 m^2)
Wet Per. =2.0 +(0.4*(((4.0^2)+1)^.5 +((4.0^2)+1)^.5)) = 5.5 ft (1.7 m)
Hydraulic Radius = (1.6 / 5.5) = 0.3 ft (0.1 m)
Channel,Velocity =(1.486/0.040)*(0.3^0.667)*(0.091^.5) = 4.9 fps (1.5 m/s)
Channel Effective Manning's Roughness = 0.040
Calculated Shear (Td) = 62.4 * 0.43 * 0.091 = 2.42 psf (116.0 Pa)
Safety Factor = (Tp/Td) _ (2.50 /2.42) = 1.03
t
{
SWALE JJ @ LEVEL SPDR 12
Worksheet for Trapezoidal Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE JJ @ LEVEL SPDR 12
Flow Element Trapezoidal Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.091000 ft/ft
Left Side Slope 4.000000 H : V
Right Side Slope 4.000000 H : V
Bottom Width 2.00 ft
Discharge 7.73 cfs
Results
Depth 0.37 ft
Flow Area 1.29 ft2
Wetted Perimeter 5.05 ft
Top Width 4.96 ft
Critical Depth 0.54 ft
Critical Slope 0.0189 88 ft/ft
Velocity 6.01 ft/s
Velocity Head 0.56 ft
Specific Energy 0.93 ft
Froude Number 2.08
Flow is supercritical.
04/23/06 FlowMaster v5.13
04:24:35 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

SWALE KK NEXT TO BICYCLE PATH
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE KK NEXT TO BICYCLE PATH
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.072000 ft/ft
Left Side Slope 4.500000 H : V
Right Side Slope 3.000000 H : V
Discharge 0.22 cfs
Results
Depth 0.16 ft
Flow Area 0.09 ft2
Wetted Perimeter 1.22 ft
Top Width 1.18 ft
Critical Depth 0.18 ft
Critical Slope 0.0304 35 ft/ft
Velocity 2.38 ft/s
Velocity Head 0.09 ft
Specific Energy 0.25 ft
Froude Number 1.50
Flow is supercritical.
04/23/06 FlowMaster v5.13
04:26:19 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
fi
SWALE LL @ CULVERT 12
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE LL
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.039000 ft/ft
Left Side Slope 4.000000 H : V
Right Side Slope 4.000000 H : V
Discharge 1.20 cfs
Results
Depth 0.32 ft
Flow Area 0.42 ft2
Wetted Perimeter 2.67 ft
Top Width 2.60 ft
Critical Depth 0.35 ft
Critical Slope 0.024312 ft/ft
Velocity 2.85 ft/s
Velocity Head 0.13 ft
Specific Energy 0.45 ft
Froude Number 1.25
Flow is supercritical.
04/24/06 FlowMaster v5.13
11:02:04 AM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
r
SWALE LL @ STA 15+00
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE LL @ STA 15+00
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.036000 ft/ft
Left Side Slope 4.000000 H : V
Right Side Slope 4.000000 H : V
Discharge 0.71 cfs
Results
Depth 0.27 ft
Flow Area 0.29 ftz
Wetted Perimeter 2.23 ft
Top Width 2.16 ft
Critical Depth 0.29 ft
Critical Slope 0.026075 ft/ft
Velocity 2.43 ft/s
Velocity Head 0.09 ft
Specific Energy 0.36 ft
Froude Number 1.16
Flow is supercritical.
04/24/06 FlowMaster v5.13
11:06:45 AM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
r i
s s
SWALE MM @ CULVERT 12
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE MM @ CULVERT 12
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.040000 ft/ft
Left Side Slope 4.000000 H : V
Right Side Slope 4.000000 H : V
Discharge 0.67 cfs
Results
Depth 0.26 ft
Flow Area 0.27 ft2
Wetted Perimeter 2.14 ft
Top Width 2.08 ft
Critical Depth 0.28 ft
Critical Slope 0.026278 ft/ft
Velocity 2.49 ft/s
Velocity Head 0.10 ft
Specific Energy 0.36 ft
Froude Number 1.22
Flow is supercritical.
04/24/06 FlowMaster v5.13
11:12:56 AM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
I ,
SWALE NN
Worksheet for Trapezoidal Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE NN
Flow Element Trapezoidal Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.100000 ft/ft
Left Side Slope 4.000000 H : V
Right Side Slope 4.000000 H : V
Bottom Width 2.00 ft
Discharge 4.23 cfs
Results
Depth 0.26 ft
Flow Area 0.81 ft2
Wetted Perimeter 4.18 ft
Top Width 4.11 ft
Critical Depth 0.40 ft
Critical Slope 0.020677 ft/ft
Velocity 5.24 ft/s
Velocity Head 0.43 ft
Specific Energy 0.69 ft
Froude Number 2.08
Flow is supercritical.
04/24/06 FlowMaster v5.13
11:24:28 AM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

??********************************?F?k?citYe*?nt?k****akir?k?k?t*ie*ir+t?lr*it*Ytitit?tieiric?t*?t**?k*ir*?k?t
NORTH AMERICAN GREEN EROSION CONTROL MATERIALS DESIGN SOFTWARE VERSION 4.2
NORTH AMERICAN GREEN CHANNEL PROTECTION - ENGLISH/S.I.
USER SPECIFIED CHANNEL LINING BACK-UP COMPUTATIONS
PROJECT NAME: MANGUM FARM SUBDIVISION PROJECT NO.: 0609
COMPUTED BY: TAS DATE: 4/24/2006
FROM STATION/REACH: SWALE NN TO STATION/REACH: AT CULVERT 12
DRAINAGE AREA: 2.29 AC. DESIGN FREQUENCY: 10 YR.

INPUT PARAMETERS
Channel Discharge : 4.2 cfs (.12 MA 3/s)
Peak Flow Period : 24 hours
Channel Slope : 0.1 ft/ft (0.1 m/m)
Channel Bottom Width : 2.0 ft (.61 m)
Left Side Slope :4:1
Right Side Slope :4:1
Channel Lining : SC250 Staple E
Permi. Shear(Tp) :2.50 psf (119.7 Pa)
Phase = 1

CALCULATIONS
Initial Depth Estimate = 0.16 * (4.2 /(0.100^0.5))^0.375 = 0.42 ft (.13 m)
Final Channel Depth (after 8 iterations) _ .31 ft (0.09 m)
Flow Area = (2.0 * 0.3)+(0.5 *0.31 ^2 * (4.0+4.0)) = 1.0 sq.ft (0.1 m^2)
Wet Per. =2.0 +(0.3*(((4.OA2)+1)^.5 +((4.0"2)+1)^.5)) = 4.5 ft (1.4 m)
Hydraulic Radius = (1.0 / 4.5) = 0.2 ft (0.1 m)
Channel Velocity =(1.486/0.040)*(0.2^0.667)*(0.100^.5) = 4.3 fps (1.3 m/s)
Channel Effective Manning's Roughness = 0.040
Calculated Shear (Td) = 62.4 * 0.31 * 0.100 = 1.91 psf (91.4 Pa)
Safety Factor = (Tp/Td) _ (2.50 /1.91) = 1.31
SWALE 00
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE 00
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.020000 ft/ft
Left Side Slope 4.000000 H : V
Right Side Slope 4.000000 H : V
Discharge 1.31 cfs
Results
Depth 0.38 ft
Flow Area 0.58 ftZ
Wetted Perimeter 3.13 ft
Top Width 3.04 ft
Critical Depth 0.37 ft
Critical Slope 0.024027 ft/ft
Velocity 2.27 ft/s
Velocity Head 0.08 ft
Specific Energy 0.46 ft
Froude Number 0.92
Flow is subcritical.
04/24/06 FlowMaster v5.13
11:32:40 AM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

SWALE PP @ CULVERT 13
Worksheet for Triangular Channel
Project Description
Project File c:\haestadlfmw10609.fm2
Worksheet SWALE PP
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.018000 ft/ft
Left Side Slope 4.000000 H : V
Right Side Slope 4.000000 H : V
Discharge 0.74 cfs
Results
Depth 0.31 ft
Flow Area 0.39 ft2
Wetted Perimeter 2.58 ft
Top Width 2.50 ft
Critical Depth 0.29 ft
Critical Slope 0.025929 ft/ft
Velocity 1.89 ft/s
Velocity Head 0.06 ft
Specific Energy 0.37 ft
Froude Number 0.84
Flow is subcritical.
04/24/06 FlowMaster v5.13
11:38:20 AM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1

NORTH AMERICAN GREEN EROSION CONTROL MATERIALS DESIGN SOFTWARE VERSION 4.2
NORTH AMERICAN GREEN CHANNEL PROTECTION - ENGLISH/S.I.
USER SPECIFIED CHANNEL LINING BACK-UP COMPUTATIONS
*****************************************************************************
PROJECT NAME: MANGUM FARM SUBDIVISION PROJECT NO.: 0609
COMPUTED BY: TAS DATE: 4/24/2006
FROM STATION/REACH: SWALE QQ TO STATION/REACH: AT CULVERT 13
DRAINAGE AREA: 2.11 AC. DESIGN FREQUENCY: 10 YR.
*****************************************************************************
INPUT PARAMETERS
Channel Discharge : 3.9 cfs (.11 MA 3/s)
Peak Flow Period : 24 hours
Channel Slope : 0.05 ft/ft (0.05 m/m)
Channel Bottom Width: .0 ft (.00 m)
Left Side Slope :4:1
Right Side Slope :4:1
Channel Lining : SC250 Staple E
Permi. Shear(Tp) :2.50 psf (119.7 Pa)
Phase = 1

CALCULATIONS
Initial Depth Estimate = 0.16 * (3.9 /(0.050"0.5))^0.375 = 0.47 ft (.14 m)
Final Channel Depth (after 8 iterations) =.53 ft (0.16 m)
Flow Area = (0.0 * 0.5)+(0.5 *0.53"2 * (4.0+4.0)) = 1.1 sq.ft (0.1 m^2)
Wet Per. =0.0 +(0.5*(((4.OA2)+1)^.5 +((4.0^2)+1)".5)) = 4.4 ft (1.3 m)
Hydraulic Radius = (1.1 / 4.4) = 0.3 ft (0.1 m)
Channel Velocity =(1.486/0.039)*(0.3^0.667)*(0.050^.5) = 3.4 fps (1.0 m/s)
Channel Effective Manning's Roughness = 0.039
Calculated Shear (Td) = 62.4 * 0.53 * 0.050 = 1.66 psf (79.7 Pa)
Safety Factor = (Tp/Td) = (2.50 /1.66) = 1.50

SWALE QQ
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE QQ
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.050000 ft/ft
Left Side Slope 4.000000 H : V
Right Side Slope 4.000000 H : V
Discharge 3.90 cfs
Results
Depth 0.48 ft
Flow Area 0.93 ft2
Wetted Perimeter 3.97 ft
Top Width 3.85 ft
Critical Depth 0.57 ft
Critical Slope 0.020776 ft/ft
Velocity 4.20 ft/s
Velocity Head 0.27 ft
Specific Energy 0.76 ft
Froude Number 1.51
Flow is supercritical.
04/24/06 FlowMaster v5.13
11:49:33 AM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
A ? ? Y
SWALE RR @ CULVERT 13
Worksheet for Triangular Channel
Project Description
Project File c:\haestad\fmw\0609.fm2
Worksheet SWALE RR @ CULVERT 13
Flow Element Triangular Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.050000 ft/ft
Left Side Slope 4.000000 H : V
Right Side Slope 4.000000 H : V
Discharge 1.98 cfs
Results
Depth 0.37 ft
Flow Area 0.56 ft2
Wetted Perimeter 3.08 ft
Top Width 2.99 ft
Critical Depth 0.43 ft
Critical Slope 0.022741 ft/ft
Velocity 3.55 ft/s
Velocity Head 0.20 ft
Specific Energy 0.57 ft
Froude Number 1.45
,Flow is supercritical.
04/24/06 FlowMaster v5.13
11:57:58 AM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1