SW4231203_As-Built - Calculations_20240214

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Noland Farm SWA000105
Table of Contents for additional Stormwater Calculations
Low Density Information Page 1
Channel Calculations for permanent grassed swales Page 2 through Page 12
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Revision#1- 11/20/23 Permanent Grass Swales reworked and calculations modified
Paul A.Stimpson, PE
Regional Civil Leader/Office Manager
C#0430
939 Burke Street, Suite H Winston-Salem, NC 27101 i p(704) 560-8514
www labellapc corn

LOW DENSITY
a 33 one Way Misternaittsfutom OM Jen
1 Is project below aensity 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(21(.11' - Yes
4 Side slopes of the vegetated onveyances 4:V) 31-t 1V
5 Maximum velocityin the vegetated conveyances during the 10-year storm? - Tirii-
6 Are curb outlet swales proposed? ,t - NO -
7 Maximum longitudinal slope of curb outlet swale(s)Obi Al/1 .-.
a Bottom width of curb outlet swale(sl;feet) _ /W4-
0 - Maximum side slope 3f zurb outlet swale(s)(H:V) --- __--Al/ --.
1_10 Minimum length of curb outlet Swale 31;feed ,_ �t�N t
11 Are treatment swales used instead of curb outlet swales? w,/09 s/i6
12 _Is stormwater released at the edge of the setback as dispersed flow? ojYE 5
13 Have stormwater outlets been designed to prevent downslppe erosion? Yes
14 Are variations to rule 1003 proposed' rid
f Q4L.IN- NtJQ& __ _ -
15 Please use this space to provide any additional information about this low density project
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i3 , area act arise C [cfsJ C'4 ih�( (-F51 r
{_:_-1--_• !,'f S • 0_1.4 ,,.311 6b0 j �a05 ' 2.213 5-00 ; 3•2 ,Ago
22 126 0.t4 i 1.12 0$0 4.38 �1;0 5.00 ) 3.03 f 0.44
_ • 0.31 0 14 0.17 _ ; 1.08 l 4.83 5.06 2fz6 0.16
` 0 ; 0-09 0.21 ` 0.50 r 1.04 11 3.60 5.00. ; 2.37 017
I, 71.,, a.3; 6l1< . 0_08 0_23 i 0_50 1 08 y 3.60 5.00 r 440 0. tI _
r tr O,t7 0.07 ' 0.10 1 0.50 ' 0.59 (1 3.30 5 00 1 1 91 0.13
I Z. - 1.80 0.71 1.09 j 0.50 626 ! 457 I 5-00 ) 4.63 0.66.
B O B 50 2 0 27 035 j 0 i-t6 '90' s:150:_ 1 3.33 0.45
1 9 0.65 027 0.38` , 050 2.26 i 3.90 500, 3.37 0.46
10 0.52 I 116 0 6 l 0:50 181 5_40'1 6.00. 1 3.6.1 0.39
i 11 2-88 • 0.68 2-.20 i 050 10.02 4_69 5.00 4.91 � 0.46

American -
Trapezoidal Channel Analysis Excelsior -
Company®
Project Info Earth Science Division
User Input
Bed Manning's n-Value(Nc): .032 Left Manning's n-Value(NI): .032
Right Manning's n-Value(Nr): .032 Right-Side Slope(Zr) [H:1V]:3
Left-Side Slope(Z1)[H:l V]:3 Bed Slope(S)[ft/ft]:0.0228
Bottom Width(B) [ft]:2 Design Discharge(Q)[ft3/sec]:5.05
Bend Coefficient(Kb): 1 /�� 0 r �� Sp/6. It; i'N/hr)(/•1/s-gc)
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Hydraulic Results
Depth[ft]:0.461 � Velocity [ft/sec]:3.24 V
Froude:0.999 Shear[lb/ft2]:0.655
Project Information
Designers Name:Paul Stimpson Designers Title:engineer
Designers Organization:LaBella Associates,PC Project Name:Noland Farm
Project Number:2222629 Project Location(City,State):Davidson County,NC,North Carolina
Project Segment:Grassed swale#1 Applications(s):channel stabilization
Project Description: Project Bid Date:--
Project Start Date:--
Jan 23rd,2024
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American -
Trapezoidal Channel Analysis Excelsior
Cornpany �
Project Info Earth Science Division
User Input
Bed Manning's n-Value(Nc): .032 Left Manning's n-Value(NI): .032
Right Manning's n-Value(Nr): .032 Right-Side Slope(Zr) [H:1 V]:3
Left-Side Slope(ZI) [H:IV]:3
Bed Slope(S) [ft'ft]:0.021
Bottom Width(B) [ft]:2
Design Discharge(Q)[ft;/sec]:4.38
Bend Coefficient(Kb): 1 r 1 A l
,- 0, 5 L4
Hydraulic Results
Depth [ft]:0.437 Velocity [ft/sec]: 3.03
Froude: 0.953 Shear[Ib/ft']: 0.573
Project Information
Designers Name: Paul Stimpson Designers Title:engineer
Designers Organization: LaBella Associates,PC Project Name:Noland Farm
Project Number:22222629 Project Location(City,State): Davidson County,NC,North Carolina
Project Segment:grassed swale#2 Applications(s): permanent grassed swale
Project Description: Project Bid Date:--
Project Start Date:--
Nov 2nd, 2023
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Trapezoidal Channel Analysis Excelsior
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Project Info Earth Science Division
User Input
Bed Manning's n-Value(NC): .032 Left Manning's n-Value(NI):.032
Right Manning's n-Value(Nr): .032 Right-Side Slope(Zr)[H:IV]:3
Left-Side Slope(ZI) [H:1 V]:3 Bed Slope(S) [ftift]:0.0483
Bottom Width (B) [ft]:2 Design Discharge(Q)[ft3/sec]: 1.08
Bend Coefficient(Kb): 1 )
Hydraulic Results =
Depth[ft]:0.163 Velocity [ft/sec]:2.66 vim'
Froude: 1.27 Shear[Ib/ft2]:0.491
Project Information
Designers Name: Paul Stimpson Designers Title:engineer
Designers Organization:LaBella Associates, PC Project Name:Noland Farm
Project Number:2222629 Project Location(City,State):Davidson County,NC,North Carolina
Project Segment:grassed swale#3 Applications(s): permanent grassed swale
Project Description: Project Bid Date:--
Project Start Date:--
Nov 2nd, 2023
V 'IN EROSIQNWORKS.COM Li

American Trapezoidal Channel Analysis Excelsior
Cornpany'-
Project Info Earth Science Division
User Input
Bed Manning's n-Value(NC): .032 Left Manning's n-Value(N1): .032
Right Manning's n-Value(Nr): .032 Right-Side Slope(Zr) [H:1 V]:3
Left-Side Slope(Z1) [H:1V]:3 Bed Slope(S) [ft/ft]: 0.036
Bottom Width(B) [ft]:2
Design Discharge(Q)[ft3/sec]: 1.04 I.d'
Bend Coefficient(Kb): 1 1 A }
Hydraulic Results
Depth [ft]:0.174 Velocity [ft/sec]:2.37
Froude: 1.1 Shear[lb/ft2]:0.39
Project Information
Designers Name: Paul Stimpson Designers Title:engineer
Designers Organization:LaBella Associates,PC Project Name:Noland Farm
Project Number:2222629 Project Location(City,State):Davidson County,NC,North Carolina
Project Segment:Grassed swale#4 Applications(s): permanent grassed swale
Project Description: Project Bid Date:--
Project Start Date:--
Nov 2nd, 2023
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American -
Trapezoidal Channel Analysis Excelsior
Company �
Project Into Earth Science Division
User Input
Bed Manning's n-Value(Nc): .032 Left Manning's n-Value(Nl): .032
Right Manning's n-Value(Nr): .032 Right-Side Slope(Zr)[H:1 V]:3
Left-Side Slope(Zl)[H:l V]:3
Bed Slope(S)[ft/ft]:0.036
Bottom Width(B)[ft]:2 Design Discharge(Q)[ft3/sec]: 1.08 '`
Bend Coefficient(Kb): l l
Hydraulic Results
Depth[ft]:0.178 Velocity [ft/sec]:2.4
Froude: 1.1 Shear[Ib/ft']:0.399
Project Information
Designers Name: Paul Stimpson Designers Title:engineer
Designers Organization:LaBella Associates,PC Project Name:Noland Farm
Project Number:2222629 Project Location(City,State):Davidson County,NC,North Carolina
Project Segment:Grassed swale#5 Applications(s):permanent grassed swale
Project Description: Project Bid Date:--
Project Start Date:--
Nov 2nd, 2023
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Trapezoidal Channel Analysis Excelsior
ummiler
Company
Project Info Earth Science Division
User Input
Bed Manning's n-Value(Nc): .032 Left Manning's n-Value(NI): .032
Right Manning's n-Value(Nr): .032 Right-Side Slope(Zr) [H:l V]:3
Left-Side Slope(ZI) [H:IV]:3
Bed Slope(S)[ft/ftl:0.033
Bottom Width(B) [ft]:2 Design Discharge(Q) [ft3/sec]: .59
Bend Coefficient(Kb): l •
Hydraulic Results
Depth [ft]:0.129 Velocity [ft/sec]: 1.91
Froude: 1.01 Shear[lb/ft']: 0.266
Project Information
Designers Name: Paul Stimpson Designers Title:engineer
Designers Organization: LaBella Associates,PC Project Name:Noland Farm
Project Number:2222629 Project Location(City,State): Davidson County,NC,North Carolina
Project Segment: Grassed swale#6 Applications(s): permanent grassed swale
Project Description: Project Bid Date:--
Project Start Date:--
•
Nov 2nd, 2023
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American -
Trapezoidal Channel Analysis Excelsior
Company �
Project Info Earth Science Division
User Input
Bed Manning's n-Value(Nc): .032 Left Manning's n-Value(NI): .032
Right Manning's n-Value(Nr): .032 Right-Side Slope(Zr)[H:I V]:3
Left-Side Slope(Zl)[H:l V]:3 Bed Slope(S)[ft/ft]: 0.0457
Bottom Width(B)[ft]: .l
Design Discharge(Q)[ft3isec]:6.26"J
r �_ Y Bend Coefficient(Kb): 1 A
Hydraulic Results
Depth [ft]:0.655 Velocity [ft/sec]:4.63
Froude: 1.41 Shear[Ib/ftl: 1.87
Project Information
Designers Name: Paul Stimpson Designers Title:engineer
Designers Organization:LaBella Associates, PC Project Name:Noland Farm
Project Number:2222629 Project Location(City,State): Davidson County,NC,North Carolina
Project Segment: Grassed swale#7 Applications(s):permanent grassed swale
Project Description: Project Bid Date:--
Project Start Date:--
Nov 2nd. 2023
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American Trapezoidal Channel Analysis Excelsior
Cornpany' �
Project Info Earth Science Division
User Input
Bed Manning's n-Value(Nc): .032 Left Manning's n-Value(NI): .032
Right Manning's n-Value(Nr): .032 Right-Side Slope(Zr) [H:IV]:3
Left-Side Slope(Z1)[H:I V]:3 Bed Slope(S)[ft/ft]:0.039 V
Bottom Width(B)[ft]: .l
Design Discharge(Q)[ft3/sec]:2.16
A
Bend Coefficient(Kb): iI /� a +^ )(
Hydraulic Results
Depth [ft]:0.449 Velocity [ft/sec]:3.33 /
•
Froude: 1.22 Shear[lb/ft']: 1.09
Project Information
Designers Name: Paul Stimpson Designers Title:engineer
Designers Organization:LaBella Associates,PC Project Name:Noland Farm
Project Number:2222629 Project Location(City,State): Davidson County,NC,North Carolina
Project Segment:Grassed swale#8 Applications(s):permanent grassed swale
Project Description: Project Bid Date:--
Project Start Date:--
Nov 2nd, 2023
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American -
Trapezoidal Channel Analysis Excelsior
Company4IIIPPP
Project Info Earth Science Division
User Input
Bed Manning's n-Value(Nc): .032 Left Manning's n-Value(Nl):.032
Right Manning's n-Value(Nr): .032 Right-Side Slope(Zr)[H:1 V]:3
Left-Side Slope(ZI)[H:l V]:3
Bed Slope(S) [ft/ft]:0.039
Bottom Width(B) [ft]: .1
Design Discharge(Q)[ft3/sec]:2.26
Bend Coefficient(Kb): l >,9 3 ,,t_ rVP,6, >4e-^
Hydraulic Results
Depth[ft]:0.457 Velocity [ft/sec]:3.37
Froude: 1.22 Shear[lb/ftz]: 1.1 I
Project Information
Designers Name: Paul Stimpson Designers Title:engineer
Designers Organization:LaBella Associates,PC Project Name:Noland Farm
Project Number:2222629 Project Location(City,State):Davidson County,NC,North Carolina
Project Segment:Grassed swale#9 Applications(s): permanent grassed swale
Project Description: Project Bid Date:--
Project Start Date:--
Nov 2nd,2023
ENEROSIONWORKS COM /0

American Trapezoidal Channel Analysis Excelsior
Company aigup•P
Project Info Earth Science Division
User Input
Bed Manning's n-Value(Nc): .032 Left Mannings n-Value(NI): .032
Right Manning's n-Value(Nr): .032 Right-Side Slope(Zr) [H:1V]:3
Left-Side Slope(ZI) [H:1V]:3 Bed Slope(S)[ft/ft]:0.054
Bottom Width(B) [ft]: .1 Design Discharge(Q)[ft'!sec]: 1.81 'osj
Bend Coefficient(Kb): l ,_
Hydraulic Results
Depth [ft]:0.392 Velocity [ft/secl:3.61 ./
Froude: 1.41 Shear[lb/ftz]: 1.32
Project Information
Designers Name: Paul Stimpson Designers Title:engineer
Designers Organization:LaBella Associates,PC Project Name:Noland Farm
Project Number:2222629 Project Location(City,State): Davidson County,NC,North Carolina
Project Segment: Grassed swale#10 Applications(s):permanent grassed swale
Project Description: Project Bid Date:--
Project Start Date:--
Nov 2nd, 2023
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American -
Trapezo`dal Channel Analysis Excelsior Company
Project Info Earth Science Division
User Input
Bed Mannings n-Value(Nc): .032 Left Manning's n-Value(NI): .032
Right Manning's n-Value(Nr): .032 Right-Side Slope(Zr) [H:l V]:3
Left-Side Slope(ZI)[H:I V]:3 Bed Slope(S)[ft/ftl:0.0469
Bottom Width(B) [ft]:3 Design Discharge(Q) [ft3/sec]: 10.02 V
Bend Coefficient(Kb): 1
Hydraulic Results
Depth[ft]:0.464 Velocity [ft/sec]:4.91 V
Froude: 1.46 Shear[lb/ft2]: 1.36
Project Information
Designers Name: Paul Stimpson Designers Title:engineer
Designers Organization:LaBella Associates, PC Project Name:Noland Farm
Project Number:2222629 Project Location(City,State): Davidson County,NC,North Carolina
Project Segment:Grassed swale#11 Applications(s): permanent grassed swale
Project Description: Project Bid Date:--
Project Start Date:--
Nov 2nd, 2023
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