SW4220302_As-Built - Calculations_20220322 (2)

LaBeLta
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Noland Farm SWA000105
Table of Contents for additional Stormwater Calculations
Low Density Information Page 1
Channel Calculations Page 2 through Page 10
Respectfully submitted,
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LABELLA GA
C*�0F�SS,6'
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Paul A. Stimpson, PE
Regional Civil Leader/Office Manager
C#0430
939 Burke Street, Suite H Winston-Salem, NC 27101 p (704) 56o-8514
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LOW DENSITY
DESIGN REQUIREMENTS FOR LOW DENSITY PROJECTS FROM 02H .1003
1
Is project below density thresholds set forth in the applicable stormwater rule?
Yes
2
Does project maximize dispersed flow and minimize channelization of flow?
Yes
3
Has the use of piping been minimized per.1003(2)(c)?
Yes
4
Side slopes of the vegetated conveyances (H:V)
31-1:1V
5
Maximum velocity in the vegetated conveyances during the 10-yew storm?
4.93
6
Are curb outlet swales proposed?
No
7
Maximum - dlnal a) .e of curb outlet swele(sj N
N/A
8
Bottom width of curb outlet swale(s) (feet)
N/A
9
Maximum side slope of curb outlet swale(s) (H:V)
N/A
10
Minimum length of curb outlet swale(s) (feet)
N/A
11
Are treatment swales used instead of curb outlet swales?
No
12
Is stormwater released at the edge of the setback as dispersed flow?
N/A
13
Have stormwater outlets been designed to preven-downslope erosion?
Yes
14
Are variations to rule .1003 proposed?
No
ADDITIONAL INFORMATION
15 Please use this space to provide any additional information about this low density project:
Contractor must construct channel 11(from Flared End Section 2 to the eastern property line) within the Private Drainage Easement
once the existing skimmer basin has apprwal to be removed.
Swale
#
Drainage
Area
ac
BUA
(ac)
Pervious
area
ac
C
Q
(cfs)
Slope
N
Vrlq„
(fps)
V-i
(fps)
-
Flow depth
(ft)
1
2.07
0.14
1.93
0.50
7.14
1.12
5.00
2.78
0.65
2
1.26
0.14
1.12
0,50
4.35
3.89
5.00
3.77
0.37
3
0.99
0.14
0.85
0.50
3.42
1.00
5.00
2.17
0.46
4
0.30
0.09
0.21
0.50
1.04
3.60
5.00
2.63
0.32
5
0,31
0,08
0.23
0.50
1.07
3.60
5.00
2.65
0.33
6
0.17
0.07
0A0
0.50
0.59
4.20
5.00
2.47
0.27
7
1.80
0.58
1.22
0.48
5.96
4.70
5.00
4.46
0.60
8
0.62
0.27
0.35
0.57
2.44
3.90
5.00
3.33
0.44
9
0.65
0.27
0.38
0.57
2.56
3.90
5.00
3.36
0.45
10
0.52
0.16
0.36
0.50
1.79
5.40
5.00
3.48
0.37
11
2.98
1 0.68
2.30
0.35
7.61
5.88
5.00
4.93
0.37
12
13
14
f
15
16
17
18
19
20
21
22
23
24
25
26
27
28
_

Trapezoidal Channel Analysis
Project Info
User Input
Bed Manning's n-Value (Nc):.032
Right Manning's n-Value (Nr):.032
Left -Side Slope (Zl) [H:1 V]: 4
Bottom Width (B) [ft]:.l
Bend Coefficient (Kb): 1
Hydraulic Results
Depth [ft]: 0.322
Froude:1.13
Project Information
Designers Name: Paul Stimpson
Designers Organization: LaBella Associates, PC
Project Number: 2211778
Project Segment: channel above point 4
Project Description:
Project Start Date: --
American glob
Excelsior
Company®
RW
Earth Science Division
Left Manning's n-Value (NI):.032
Right -Side Slope (Zr) [H:1 V]: 3
Bed Slope (S) [ft/ft]: 0.036
Design Discharge (Q) [f}'/sec]: 1:04'
Velocity [ft/sec]: 2.63
Shear [lb/ft']: 0.723
Designers Title: engineer
Project Name: Noland Farm
Project Location (City, State): Davidson County, North Carolina
Applications(s): channel stabilization
Project Bid Date: --
Mar 15th, 2022
1111tiW�.EROSIONWOR{KS.00M

Trapezoidal Channel Analysis
Project Info
User Input
Bed Manning's n-Value (Nc):.032
Right Manning's n-Value (Nr):.032
Left -Side Slope (ZI) [H:I V]: 3
Bottom Width (B) [ft]:.1
Bend Coefficient (Kb): 1
Hydraulic Results
Depth [ft]: 0.326
Froude:1.13
Project Information
Designers Name: Paul Stimpson
Designers Organization: LaBella Associates, PC
Project Number: 2211778
Project Segment: channel above point 5
Project Description:
Project Start Date: --
American gift
Excelsior
Company°
lw
Earth Science Division
Left Manning's n-Value (NI):.032
Right -Side Slope (Zr) [H:1 V]: 4
Bed Slope (S) [ft/ft]: 0.036
Design Discharge (Q) [ft'/sec]: 1.07
Velocity [ft/sec]: 2.65 ✓
Shear [lb/ft']: 0.732
Designers Title: engineer
Project Name: Noland Farm
Project Location (City, State): Davidson County, North Carolina
Applications(s): channel stabilization
Project Bid Date: --
Mar 15th, 2022
VN M.EROSIp1dVHOR;CS GOM

Trapezoidal Channel Analysis
Project Info
User Input
Bed Manning's n-Value (Nc):.032
Right Manning's n-Value (Nr):.032
Left -Side Slope (ZI) [H:I V]: 3
Bottom Width (B) [ft]:.1
Bend Coefficient (Kb): I
Hydraulic Results
Depth [ft]: 0.266
Froude:1.16
Project Information
Designers Name: Paul Stimpson
Designers Organization: LaBella Associates, PC
Project Number: 221778
Project Segment: channel above point 6
Project Description:
Project Start Date: --
American gift
Excelsior
Company°
Earth Science Division
Left Manning's n-Value (Nl):.032
Right -Side Slope (Zr) [H:1 V]: 3
Bed Slope (S) [ft/ft]: 0.042
Design Discharge (Q) [ft'/sec]:.59
!D °
Velocity [ft/sec]: 2.47
Shear [lb/ft2]: 0.697
Designers Title: engineer
Project Name: Noland Farm
Project Location (City, State): Davidson County, North Carolina
Applications(s): channel stabilization
Project Bid Date: --
Mar 15th, 2022
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Trapezoidal Channel Analysis
Project Info
User Input
Bed Manning's n-Value (Nc):.032
Right Manning's n-Value (Nr):.032
Left -Side Slope (Zl) [H:]V]: 4
Bottom Width (B) [ft]:.1
Bend Coefficient (Kb): 1
Hydraulic Results
Depth [ft]: 0.603
Froude: 1.42
Project Information
Designers Name: Paul Stimpson
Designers Organization: LaBella Associates, PC
Project Number: 2211778
Project Segment: channel above point 7
Project Description:
Project Start Date: --
American
Excelsior
Company
RW
Earth Science Division
Left Manning's n-Value (Nl):.032
Right -Side Slope (Zr) [H:1 V]: 3
Bed Slope (S) [ft/ft]: 0.047
Design Discharge (Q) [ft'/s;c]: 5.96
Velocity [ft/sec]: 4.46
Shear [lb/ft']: 1.77
Designers Title: engineer
Project Name: Noland Farm
Project Location (City, State): Davidson County, North Carolina
Applications(s): channel stabilization
Project Bid Date: --
Mar 15th, 2022
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Trapezoidal Channel Analysis
Project Info
User Input
Bed Manning's n-Value (Nc):.032
Right Manning's n-Value (Nr):.032
Left -Side Slope (ZI) [H:1 V]: 3
Bottom Width (B) [ft]:.1
Bend Coefficient (Kb): 1
Hydraulic Results
Depth [ft]: 0.444
Froude:1.23
Project Information
Designers Name: Paul Stimpson
Designers Organization: LaBella Associates, PC
Project Number: 2211778
Project Segment: channel above point 8
Project Description:
Project Start Date: --
American tdbk
Excelsior
Company°
RW
Earth Science Division
Left Manning's n-Value (Nl):.032
Right -Side Slope (Zr) [H:1 V]: 4
Bed Slope (S) [ft/ft]: 0.039
Design Discharge (Q) [ft'/sec]: 2.44
Velocity [ft/sec]: 3.33
Shear [lb/ft']: 1.08
Designers Title: engineer
Project Name: Noland Farm
Project Location (City, State): Davidson County, North Carolina
Applications(s): channel stabilization
Project Bid Date: --
Mar 15th, 2022
WMEROSIONWORKS.COM

Trapezoidal Channel Analysis
Project Info
User Input
Bed Manning's n-Value (Nc):.032
Right Manning's n-Value (Nr):.032
Left -Side Slope (ZI) [H:1V]: 4
Bottom Width (B) [ft]:.1
Bend Coefficient (Kb): 1
Hydraulic Results
Depth [ft]: 0.453
Froude: 1.22
Project Information
Designers Name: Paul Stimpson
Designers Organization: LaBella Associates, PC
Project Number: 2211778
Project Segment: channel above point 9
Project Description:
Project Start Date: --
American 9161111
Excelsior
Company
Earth Science Division
Left Manning's n-Value (Nl):.032
Right -Side Slope (Zr) [H:1 V]: 3
Bed Slope (S) [ft/ft]: 0.039
Design Discharge (Q) [ft'/sec]: 2.56
Velocity [ft/sec]: 3.36
Shear [lb/ftz]: 1.1
Designers Title: engineer
Project Name: Noland Farm
Project Location (City, State): Davidson County, North Carolina
Applications(s): channel stabilization
Project Bid Date: --
Mar 15th, 2022
W WW. ER051QNA 0RKS.CDM

Trapezoidal Channel Analysis
Project Info
User Input
Bed Manning's n-Value (Nc):.032
Right Manning's n-Value (Nr):.032
Left -Side Slope (ZI) [H:1 V]: 3
Bottom Width (B) [ft]:.I
Bend Coefficient (Kb): 1
Hydraulic Results
Depth [ft]: 0.369
Froude: 1.4
Project Information
Designers Name: Paul Stimpson
Designers Organization: LaBella Associates, PC
Project Number: 2211778
Project Segment: channel about point 10
Project Description:
Project Start Date: --
American
Excelsior
Company
Earth Science Division
Left Manning's n-Value (NI):.032
Right -Side Slope (Zr) [H:1 V]: 4
Bed Slope (S) [ft/ft]: 0.054
Design Discharge (Q) [ft'/sec]: 1.79
A
0,s'0 (0,She-)
Velocity [ft/sec]: 3.48 0"
Shear [lb/ftz]: 1.24
Designers Title: engineer
Project Name: Noland Farm
Project Location (City, State): Davidson County, North Carolina
Applications(s): channel stabilization
Project Bid Date: --
Mar 15th, 2022
WUW _ER0Si0NLIPRK5.00M

Trapezoidal Channel Analysis
Project Info
User Input
Bed Manning's n-Value (Nc):.032
Right Manning's n-Value (Nr):.032
Left -Side Slope (ZI) [H:]V]: 3
Bottom Width (B) [ft]: 3
Bend Coefficient (Kb): 1.25
Hydraulic Results
Depth [ft]: 0.374 f/
Froude: 1.6
Project Information
Designers Name: Paul Stimpson
Designers Organization: LaBella Associates, PC
Project Number: 2211778
Project Segment: channel 11
Project Description:
Project Start Date: --
�d17nP�1
PI WERff
American _
Excelsior
Company
RW
Earth Science Division
Left Manning's n-Value (Nl):.032
Right -Side Slope (Zr) [H:1 V]: 3
Bed Slope (S) butyl: 0.0588
Design Discharge (Q) [ft'/sec]: 7.61 V
Velocity [ft/sec]: 4.93
Shear [lb/ft']: 1.72
Designers Title: engineer
Project Name: Noland Farm
Project Location (City, State): Davidson County, North Carolina
Applications(s): channel stabilization
Project Bid Date: --
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Mar 16th, 2022 17
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Gl(
AEC Premier Coconut
1.53
1.31
up to 36
AEC Premier Straw DN QM (White Net)
1.35
1.02
up to 3
AEC Premier Straw Double Net
1.35
1.02
up to 12
AEC Premier Straw Single Net
1.27
0.901
up to 12
AEC Premier Straw SN QM (White Net)
1.27
0 901
up to 3
AEC Premier Straw/Coconut
1.44
1.16
up to 24
Curlex Enforcer (Unvegetated)
1.83
1.89
Permanent
Curlex Enforcer (Vegetated)
3.22
5.81
Permanent
1✓Curlex High Velactt H
1.83
1.89
36+
Curlex 1
1.35
1.02
up to 18
Curlex I CL
1.29
0.93
up to 15
Curlex I CL QuickMow (White Net)
1.29
0.93
up to 3
Curlex I QuickMow (White Net)
1.35
1.02
up to 3
Curlex II i
iii
1.53
1.31
up to 24
Curlex II .98
1.61
1.45
up to 30
Curlex II CL
1.36
1.05
up to 18
Curlex 11 CL QuickMow (White Net)
1.36
1.05
up to 3
Curlex 11 QuickMow (White Net)
1.53
1.31
up to 3
Curlex III
1.61
1.45
up to 36
Curlex NetFree
1.02
0.581
up to 18
Recyclex TRM (Unvegetated)
1.87
1.97
Permanent
Recyclex TRM (Vegetated)
3.37
6.4
Permanent
Recyclex TRM-V (Unvegetated)
1.85
1 93
Permanent
Recyclex TRM-V (Vegetated)
2.88
4.65
i
Permanent
TriNet Coconut (Unvegetated)
1.82
1.86
Permanent
TriNet Coconut (Vegetated)
3.52
6.98
Permanent
TriNet Curlex (Unvegetated)
1.82
1.86
Permanent
TriNet Curlex (Vegetated)
3.67
7.56
Permanent
TriNet Recyclex (Unvegetated)
1.82
1 86
Premanent
TriNet Recyclex (Vegetated)
3.8
8.14
Permanent
TriNet Straw/Coconut (Unvegetated)
1.82
1.86
Permanent
TriNet Straw/Coconut (Vegetated)
3.22
5.81
Permanent
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
N/A
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Mar 16th, 2022
WVWIf EROSIONWOt3KS.COM