SW6230802_Design Calculations_20230831

Culvert Report
Hydraflow Express Extension for Autodesk®Civil 3D®by Autodesk, Inc. Thursday,Jun 1 2023
PIPE 1
Invert Elev Dn (ft) = 124.15 Calculations
Pipe Length (ft) = 50.00 Qmin (cfs) = 5.18
Slope (%) = 0.50 Qmax (cfs) = 5.18
Invert Elev Up (ft) = 124.40 Tailwater Elev (ft) = (dc+D)/2
Rise (in) = 18.0
Shape = Circular Highlighted
Span (in) = 18.0 Qtotal (cfs) = 5.18
No. Barrels = 1 Qpipe (cfs) = 5.18
n-Value = 0.012 Qovertop (cfs) = 0.00
Culvert Type = Circular Concrete Veloc Dn (ft/s) = 3.45
Culvert Entrance = Square edge w/headwall (C) Veloc Up (ft/s) = 4.84
Coeff. K,M,c,Y,k = 0.0098, 2, 0.0398, 0.67, 0.5 HGL Dn (ft) = 125.34
HGL Up (ft) = 125.28
Embankment Hw Elev (ft) = 125.72
Top Elevation (ft) = 126.60 Hw/D (ft) = 0.88
Top Width (ft) = 28.00 Flow Regime = Inlet Control
Crest Width (ft) = 50.00
Elev 10) PIPE 1 Rvl Depth(0)
127.00 2.60
12650 2.10
tdlldliii _--'.'''
MOO 1.60
inlet nn,rtl
125.50 1.10
12500 0.60
124.50 0.10
124.00 -040
123.50 -0.90
0 5 10 15 20 25 30 35 <0 45 50 _1 60 65 70
GIrmAarGulven 11GL Embank
Reach(6)

Culvert Report
Hydraflow Express Extension for Autodesk®Civil 3D®by Autodesk, Inc. Thursday,Jun 1 2023
PIPE 2
Invert Elev Dn (ft) = 126.60 Calculations
Pipe Length (ft) = 46.00 Qmin (cfs) = 3.49
Slope (%) = 0.54 Qmax (cfs) = 3.49
Invert Elev Up (ft) = 126.85 Tailwater Elev (ft) = (dc+D)/2
Rise (in) = 18.0
Shape = Circular Highlighted
Span (in) = 18.0 Qtotal (cfs) = 3.49
No. Barrels = 1 Qpipe (cfs) = 3.49
n-Value = 0.012 Qovertop (cfs) = 0.00
Culvert Type = Circular Concrete Veloc Dn (ft/s) = 2.50
Culvert Entrance = Square edge w/headwall (C) Veloc Up (ft/s) = 4.22
Coeff. K,M,c,Y,k = 0.0098, 2, 0.0398, 0.67, 0.5 HGL Dn (ft) = 127.71
HGL Up (ft) = 127.56
Embankment Hw Elev (ft) = 127.87
Top Elevation (ft) = 129.74 Hw/D (ft) = 0.68
Top Width (ft) = 20.00 Flow Regime = Inlet Control
Crest Width (ft) = 50.00
EH:i31 PIPE 2 Ho C4ptn!3.i
13... 3.15
128.00 1.15
ImNcaabd
1z>_ao o.1s
12fi.00 -0.65
125.00 -1.05
0 5 10 15 20 25 30 35 4. 45 53 55 E. 65 70
GirwlarGolve, HGL Embank
Rea.01)

Culvert Report
Hydraflow Express Extension for Autodesk®Civil 3D®by Autodesk, Inc. Thursday,Jun 1 2023
PIPE 3
Invert Elev Dn (ft) = 125.60 Calculations
Pipe Length (ft) = 40.00 Qmin (cfs) = 15.48
Slope (%) = 0.50 Qmax (cfs) = 15.48
Invert Elev Up (ft) = 125.80 Tailwater Elev (ft) = (dc+D)/2
Rise (in) = 24.0
Shape = Circular Highlighted
Span (in) = 24.0 Qtotal (cfs) = 15.48
No. Barrels = 1 Qpipe (cfs) = 15.48
n-Value = 0.012 Qovertop (cfs) = 0.00
Culvert Type = Circular Concrete Veloc Dn (ft/s) = 5.42
Culvert Entrance = Square edge w/headwall (C) Veloc Up (ft/s) = 6.50
Coeff. K,M,c,Y,k = 0.0098, 2, 0.0398, 0.67, 0.5 HGL Dn (ft) = 127.31
HGL Up (ft) = 127.22
Embankment Hw Elev (ft) = 128.11
Top Elevation (ft) = 128.60 Hw/D (ft) = 1.15
Top Width (ft) = 20.00 Flow Regime = Inlet Control
Crest Width (ft) = 50.00
Elev(rt) PIPE 3 Hw Dept,(1)
129.00 3.20
jnIfrd
128.00 - 220
127.00 1.20
12600 030
125.00 -0.80
121.00 -1.80
0 5 10 15 20 25 3D 35 40 IS 50 55 50
Gra rCdv00 HGL Embank
Rea.(a)

1882-MORNING GLORY SUBDIVISION
EC Matting Calculations
Ditch#1
fl North American Green ECMDS Version 4.3-Channel Protection Design,Output Form
File Specifications Options Help
IENGLISH. IUSER I 6/1/2023 02:07PMI
HYDRAULIC RESULTS
Discharge Peak Flow Velocity(fps) Area(sq.ft) Hydraulic Normal Unreinforced Vegetation(n=0.040)
(cfs) Period(hrs) Radius(ft)• _ Depth(ft)
12.9 0.1 1.83 1.59 0.34 0.65
I S=0.0100
t' rr,', „, M'„tr r� r.,, V rM
F .-{? p h a� f : f....is*,.:,' e p ,*�
,� a;{£; 4,,: 4 �., . , .4. ., r•4 ff \_____
B 1
t rw . ice, A �iM r. r, 3.0 Width=0.50ft 3.0
' f 4 ' f A. "
LINER RESULTS X X tK Not to Scale
Matting Type Vegetation Characteristics
Reach Stability Analysis Permissible Calculated Safety Factor Remarks
Staple Pattern Phase Class Type Density Shear Stress Shear Stress
(psi) (psi)
• Straight Unreinforced Vegetation D Bunch 50-75% 3.33 - 0.40 - 8.22 STABLE
Soil Sandy Loam 0.035 0.037 0.95 UNSTABLE
IINorth American Green ECMDS Version 4.3-Channel Protection Design,Output Form
File Specifications Options Help
IdENGLISH. IUSER I 16/1/21123 02:08 PM II
HYDRAULIC RESULTS
Discharge Peak Flow Velocity(fps) Area(sq.ft) Hydraulic Normal S75(n=0.050)
(cfs) Period(hrs) Radius(ft) . Depth(ft)
In 0.1 1.54 1.88 0.38 0.71
S=0.0100
,,4S ,`1ti .��1t 1 , •',
47#,
\ 4, ‘\ `, ; A .,:4 i� t L Bottom
4:;, , 45 3.0 Width=0.50ft 3.0
.*:„
:.'.r14•• 4. .`„,.I.,.'t,(
(t ` ,A U `
^� 4 y. #.V <1s
LINER RESULTS ti ,, _ Not to Scale
Matting Type Vegetation Characteristics
Reach Stability Analysis Permissible Calculated Safety Factor Remarks
Staple Pattern Phase Class Type Density Shear Stress Shear Stress
(psi) (psi)
Straight S75 Unvegetated 1.55 0.44 3.48 STABLE
Staple D

Ditch#2
1 North American Green ECMDS Version 4.3-Channel Protection Design,Output Form
File Specifications Options Help
:ENGLISH. (USER I 6/1/2023 02:10 PM I
HYDRAULIC RESULTS
Discharge Peak Flow Velocity(fps) Area(sq.ft) Hydraulic Normal Unreinforced Vegetation(n=0.040)
(cfs) Period(hrs) Radius(ft) . Depth(ft) I I
2.7 0.1 1.38 1.95 0.38 0.73
S=0.0050
1 L Bottom _I 1
3.0 Width=0.50 ft 3.0
LINER RESULTS Not to Scale
Matting Type Vegetation Characteristics
Reach Stability Analysis Permissible Calculated Safety Factor Remarks
Staple Pattern Phase Class Type Density Shear Stress Shear Stress
(psf) (psf)
Straight Unreinforced Vegetation D Bunch 50.75% 3.33 0.23 14.67 STABLE
- Soil Sandy Loam 0.035 0.021 1.69 STABLE
Ditch#3
fl North American Green ECMDS Version 4.3-Channel Protection Design,Output Form
File Specifications Options Help
:ENGLISH. IUSER 6/1/2023 02:11 PMI
HYDRAULIC RESULTS
Discharge Peak Flow Velocity(fps) Area(sq.ft) Hydraulic Normal Unreinforced Vegetation(n=0.040)
(cfs) Period(hrs). Radius(ft) , Depth(ft) I
0.7 0.1 1.82 0.38 0.17 0.28
S=0.0260
1 L Bottom _1 1
3.0 Width=0.50 ft 3.0
LINER RESULTS Not to Scale
Matting Type Vegetation Characteristics
Reach Stability Analysis Permissible Calculated Safety Factor Remarks
Staple Pattern Phase Class Type Density Shear Stress Shear Stress
(Psi) (psi)
Straight Unreinforced Vegetation D Bunch 50-75% 3.33 0.46 7.22 STABLE
Soil Sandy Loam 0.035 0.042 0.83 UNSTABLE

III North American Green ECMDS Version 4.3-Channel Protection Design,Output Form
File Specifications Options Help
:ENGLISH. }USER I 6/1/2023 02:12 PM I
HYDRAULIC RESULTS
Discharge Peak Flow Velocity(fps) Area(sq.ft) Hydraulic Normal S75(n=0.055)
(cfs) Period(hrs) Radius(ft) Depth(ft)
10.7 0.1 1.44 0.49 0.19 0.33
S=0.0260
1 L Bottom _I 1
3.0 Width=0.50 ft 3.0
LINER RESULTS Not to Scale
Matting Type Vegetation Characteristics
Reach Stability Analysis Permissible Calculated Safety Factor Remarks
Staple Pattern Phase Class Type Density Shear Stress Shear Stress
(psi) (psi)
Straight S75 Unvegetated 1.55 - 0.53 2.91 STABLE
Staple D
Ditch#4
IINorth American Green ECMDS Version 4.3-Channel Protection Design,Output Form
File Specifications Options Help
IHENGLISH. FUSER 6/1/2023 02:13PM
y. HYDRAULIC RESULTS
Discharge Peak Flow Velocity(fps) Area(sq.ft) Hydraulic Normal Unreinforced Vegetation(n=0.040)
(cfs) Period(hrs)_ Radius(ft) _ Depth(ft)
p.6 0.1 1.75 0.34 0.16 0.26
W w, h S=0.0260
{x ' ci ;i St � i �Se_. ii;* 0: . 1 Bottom -1
tp.4,11, w,1 ,. , •,�,�c, . ; � , �, 3.0 Width=0.50ft 3.0
.,1.4't,-*
LINER RESULTS -ra. ,`'4 .,�'I^ '. -j�`''t',. , Not to Scale
Matting Type Vegetation Characteristics
Reach Stability Analysis Permissible Calculated Safety Factor Remarks
Staple Pattern Phase Class Type Density Shear Stress Shear Stress
(psi) (psi)
Straight Unreinforced Vegetation D Bunch 50.75% 3.33 0.43 7.75 STABLE
Soil Sandy Loam 0.035 0.039 0.89 UNSTABLE
i0`.,/,-`7.t:c0dis.i'..s ctg4sjw sl cis A '.c.;L1I.INV'...t LV aritj'..t.:I b� awe'.s-'�0 sw 4 Lb 4r7.4.:ctg swn: ,:-0A.':J.c0Asstr*s..i.i:'I'

111 North American Green ECMDS Version 4.3-Channel Protection Design,Output Form
File Specifications Options Help
:ENGLISH. IUSER I 6/1/2023 02:13PM(
HYDRAULIC RESULTS
Discharge Peak Flow Velocity(fps) Area(sq.ft) Hydraulic Normal S75(n=0.055)
(cfs) ,Period(hrs). _ Radius(ft) Depth(ft)
0.6 0.1 1.38 0.43 0.18 0.31
S=0.0260
1 L Bottom _I 1
3.0 Width=0.50 ft 3.0
LINER RESULTS Not to Scale
Matting Type Vegetation Characteristics
Reach Stability Analysis Permissible Calculated Safety Factor Remarks
Staple Pattern Phase Class Type Density Shear Stress Shear Stress
(psi) (psi)
Straight S75 Unvegetated 1.55 0.50 3.12 STABLE
Staple D
Ditch#5
® North American Green ECMDS Version 4.3-Channel Protection Design,Output Form
File Specifications Options Help
NEIENGLISH. IUSER 6/1/2023 02:14 PM
HYDRAULIC RESULTS
Discharge Peak Flow Velocity(fps) Area(sq.ft) Hydraulic Normal Unreinforced Vegetation(n=0.040)
(cfs) Period(hrs) _ Radius(ft) Depth(ft)
18.2 0.5 2.23 8.15 0.78 1.57
S=0.0050
i
1 L Bottom _I 1
3.0 Width=0.50 ft 3.0
{
LINER RESULTS Not to Scale
Matting Type Vegetation Characteristics
[,. Reach Stability Analysis Permissible Calculated Safety Factor Remarks
Staple Pattern ' Phase Class Type Density Shear Stress Shear Stress
(psi) (psi)
Straight Unreinforced Vegetation D Bunch 50.75% 3.33 0.49 6.81 STABLE
Soil Sandy Loam 0.035 0.045 0.78 UNSTABLE

III North American Green ECMDS Version 4.3-Channel Protection Design,Output Form
File Specifications Options Help
:ENGLISH. FUSER I 6/1/2023 02:15PM!
HYDRAULIC RESULTS
Discharge Peak Flow Velocity(fps) Area(sq.ft) Hydraulic Normal S75(n=0.033)
(cis) Period(hrs) Radius(ft) Depth(ft) I I
18.2 - 0.5 2.56 7.11 0.73 1.46
S=0.0050
1 L Bottom _I 1
3.0 Width=0.50 ft 3.0
LINER RESULTS Not to Scale
Matting Type Vegetation Characteristics
Reach Stability Analysis Permissible Calculated Safety Factor Remarks
Staple Pattern Phase Class Type Density Shear Stress Shear Stress
(psi) (psi)
Straight S75 Unvegetated 1.55 0.45 3.41 : STABLE
•
Staple D
Ditch#6
LI North American Green ECMDS Version 4.3-Channel Protection Design,Output Form
File Specifications Options Help
:ENGLISH. IUSER I 16/1/21123 02:15PMI
HYDRAULIC RESULTS
Discharge Peak Flow Velocity(fps) Area(sq.ft) Hydraulic Normal Unreinforced Vegetation(n=0.040)
(cfs) _Period(hrs), Radius(ft) _ Depth(ft)
16.1 0.5 2.16 7.43 0.75 1.49
S=0.0050
1 L Bottom 1
3.0 Width=0.50 ft 3.0
LINER RESULTS Not to Scale
Matting Type Vegetation Characteristics
Reach Stability Analysis Permissible Calculated Safety Factor Remarks
Staple Pattern Phase Class Type Density Shear Stress Shear Stress
(psi) (psi)
Straight Unreinforced Vegetation D Bunch 50.75% 3.33 0.47 7.15 : STABLE
Soil Sandy Loam 0.035 0.043 0.82 UNSTABLE

II North American Green ECMDS Version 4.3-Channel Protection Design,Output Form
File Specifications Options Help
:ENGLISH. IUSER I 6l1/2023 02:16 PM
HYDRAULIC RESULTS
Discharge Peak Flow Velocity(fps) Area(sq.ft) Hydraulic Normal S75(n=0.034)
(cis) -Period(hrs) Radius(it) Depth(ft)
116.1 0.5 2.42 6.65 0.71 1.41
S=0.0050
1 L Bottom _I 1
3.0 Width=0.50 ft 3.0
LINER RESULTS Not to Scale
Matting Type 1 Vegetation Characteristics
Reach Stability Analysis Permissible Calculated Safety Factor Remarks
Staple Pattern Phase Class Type Density Shear Stress Shear Stress
(psi) (psi)
•
Straight S75 : Unvegetated 1.55 0.44 3.53 - STABLE
Staple D
Ditch#7
II North American Green ECMDS Version 4.3-Channel Protection Design,Output Form
File Specifications Options Help
IRENGLISH. (USER I 6/1/2023 02:16 PM
HYDRAULIC RESULTS
Discharge Peak Flow Velocity(fps) Area(sq.ft) Hydraulic Normal Unreinforced Vegetation(n=0.040)
(cfs) ,Period(hrs). - Radius(ft) Depth(ft)
14.1 0.1 1.54 2.67 0.45 0.86
S=0.0050
P j'
t.s of-'4;-',, :c.--
2 t�' s2 , ),4"..__7_ .I' '"__g Bottom
' �;y ' ;` ;" 3.0 Width=0.50ft 3.0
-;s-:4-1-r'
.-48,
LIMNER REESULT~S;.r ' ''' V I 1
Not to Scale
Matting Type Vegetation Characteristics
11 Reach Stability Analysis Permissible Calculated Safety Factor Remarks
Staple Pattern Phase Class Type Density Shear Stress Shear Stress
(psi) (psi)
Straight Unreinforced Vegetation D Bunch 50.75% 3.33 0.27 12.36 STABLE
Soil Sandy Loam 0.035 0.025 1.42 STABLE

Ditch#8
nNorth American Green ECMDS Version 4.3-Channel Protection Design,Output Form
File Specifications Options Help
:ENGLISH. IUSER I 1-67172111:121
HYDRAULIC RESULTS
Discharge Peak Flow Velocity(fps) Area(sq.ft) Hydraulic Normal Unreinforced Vegetation(n=0.040)
(cfs) Period(hrs), _ Radius(ft) _ Depth(ft)
4.1 0.1 1.99 2.06 0.39 0.75
S=0.0100
1 L Bottom _I 1
3.0 Width=0.50 ft 3.0
LINER RESULTS Not to Scale
Matting Type Vegetation Characteristics
Reach Stability Analysis Permissible Calculated Safety Factor Remarks
Staple Pattern Phase Class Type Density Shear Stress Shear Stress
(psf) (psf)
Straight Unreinforced Vegetation D Bunch.50.75% 3.33 0.47 7.12 STABLE
Soil Sandy Loam 0.035 0.043 0.82 ' UNSTABLE
1111 North American Green ECMDS Version 4.3-Channel Protection Design,Output Form
File Specifications Options Help
ENGLISH. FUSER I 16/1/2023 02:17 PM I
HYDRAULIC RESULTS
Discharge Peak Flow Velocity(fps) Area(sq.ft) Hydraulic Normal S75(n=0.048)
(cfs) Period(hrs) Radius(ft) , Depth(ft)
14.1 0.1 1.74 2.36 0.42 0.81
S=0.0100
•
i 1L _i1
Bottom
3.0 Width=0.50 ft 3.0
i
LINER RESULTS Not to Scale
Matting Type Vegetation Characteristics
Reach Stability Analysis Permissible Calculated Safety Factor Remarks
Staple Pattern ' Phase Class Type Density Shear Stress Shear Stress
(psi) (psf)
-Straight S75 Unvegetated - - 1.55 0.50 3.08 - STABLE
Staple D

4D Site Solutions, Inc.
DITCH CALCULATIONS
NOTE:sheet only set up to handle Tc from 5 min to 30 min
A. Flow velocity<2.0 fps when discharging to wetlands B. Flow velocity<4.5 fps all other cases** C. Channel slope<5.0%for curb outlet swales
1882-MORNING GLORY SUBDIVISION
Rainfall Intensity
Storm Event
5-min 10-min 15-min 30-min
10-yr 7.94 6.35 5.36 3.88
25-yr 8.92 7.10 6.00 4.45
50-yr 9.64 7.67 6.47 4.88
100-yr 10.30 8.21 6.92 5.30
Tc
Drainage Impervious Grassed Storm Rainfall
Ditch No. C Kerby Kirpich Intensity Q(cfs)
Area(ac) Area(ac) Area(ac) Event(yr)
Total Tc Tc Used (m/hr)
L(ft) n s Toy, L(ft) S Tch
1 0.72 0.22 0.50 0.50 n/a 395.0 0.019 3.58 3.58 5 10-yr 7.94 2.86
2 0.69 0.21 0.48 0.50 n/a 315.0 0.023 2.80 2.80 5 10-yr 7.94 2.74
3 0.18 0.06 0.12 0.50 n/a 260.0 0.024 2.37 2.37 5 10-yr 7.94 0.71
4 0.19 0.03 0.16 0.40 n/a 260.0 0.024 2.37 2.37 5 10-yr 7.94 0.60
5 8.49 1.31 7.18 0.40 n/a 1200.0 0.005 14.09 14.09 15 10-yr 5.36 18.20
6 6.00 1.85 4.15 0.50 n/a 1050.0 0.005 12.71 12.71 15 10-yr 5.36 16.08
7 1.04 0.32 0.72 0.50 n/a 400.0 0.006 5.64 5.64 5 10-yr 7.94 4.13
8 1.04 0.32 0.72 0.50 n/a 395.0 0.009 4.78 4.78 5 10-yr 7.94 4.13
printed:8/31/2023 4:20 PM Page 1 of 1

4D Site Solutions, Inc.
PIPE CALCULATIONS
NOTE:sheet only set up to handle Tc from 5 min to 30 min
A. Cross-pipes to use 25-yr storm inensity
1882-MORNING GLORY SUBDIVISION
Rainfall Intensity
Storm Event 5-mi
IO-yr 7.94 6.35 5.36 3.88
25-yr 8.92 7.1 6 4.45
50-yr 9.64 7.67 6.47 4.88
100-yr 10.3 8.21 6.92 5.3
Tc
Drainage Storm Rainfall
Pipe No. C Kerby Kirpich Intensity Q(cfs)
Area(ac) Event(yr)
Total Tc Tc Used (in/hr)
L(ft) n s Toy, L(ft) S Tch
1 1.29 0.45 n/a 450.0 0.009 5.28 5.28 5 25-yr 8.92 5.18
2 0.87 0.45 n/a 400.0 0.020 3.55 3.55 5 25-yr 8.92 3.49
3 8.60 0.30 n/a 1200.0 0.005 14.09 14.09 15 25-yr 6 15.48
printed:8/31/2023 4:20 PM Page 1 of 1

OUTLET PROTECTION DATE DESIGN PHASE
DESIGN 6-5-2023 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X /
MORNING GLORY SUBDIVISION 1882 REVISION / /
LOCATION BY RECORD / /
Cumberland County, North Carolina BPB OTHER / /
CHECKED BY (SPECIFY)
CSB
Storm Outlet Structure
FES No.= PIPE 1 OUT Q1o/Qfull = 0.70
Pipe Dia= 18 in V/Vfull = 1.08
Q10= 5.18 cfs V= 4.5 fps
Qfull = 7.43 cfs
Vfull = 4.20 fps
From Fig. 8.06.b.1: Zone = 2
From Fig. 8.06.b.2: D50 = 8 in
DMAX = 12 in
11 :1
Riprap Class = B
Apron Thickness = 18 in
Apron Length 9.0 ft
• Apron Width @ Outlet = 4.5 ft
•� 000�•
Apron Width @ End = 10.5 ft
Length
Storm Outlet Structure
FES No.= PIPE 2 OUT Q1o/Qfull = 0.45
Pipe Dia= 18 in V/Vfull = 0.97
Q10= 3.49 cfs V= 4.3 fps
Qfull = 7.74 cfs
Vfull = 4.38 fps
From Fig. 8.06.b.1: Zone = 2
From Fig. 8.06.b.2: D50 = 8 in
DMAX = 12 in
Riprap Class = B
s Apron Thickness = 18 in
3 Apron Length = 9.0 ft
Apron Width @ Outlet = 4.5 ft
Apron Width @ End = 10.5 ft
L Length
1882-Storm Drainage for Spread.xls LATEST REVISION:8/31/2023 4:19 PM PAGE 1 OF 2

OUTLET PROTECTION DATE DESIGN PHASE
DESIGN 6-5-2023 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X /
MORNING GLORY SUBDIVISION 1882 REVISION / /
LOCATION BY RECORD / /
Cumberland County, North Carolina BPB OTHER / /
CHECKED BY (SPECIFY)
CSB
Storm Outlet Structure
FES No.= PIPE 3 OUT Q1o/Qfull = 0.97
Pipe Dia= 24 in V/Vfull = 1.14
Q10= 15.48 cfs V= 5.8 fps
Qfull = 16.00 cfs
Vfull = 5.09 fps
From Fig. 8.06.b.1: Zone = 3
From Fig. 8.06.b.2: D50 = 10 in
DMAX = 15 in
Riprap Class = 1
4.4444444 s Apron Thickness = 22.5 in
3 Apron Length 16.0 ft
Apron Width @ Outlet = 6 ft
Apron Width @ End = 18.0 ft
Length
1882-Storm Drainage for Spread.xls LATEST REVISION:8/31/2023 4:19 PM PAGE 2 OF 2

STORM DRAINAGE/HYDRAULIC GRADE LINE DATE DESIGN PHASE
ANALYSIS(10 YEAR) 6-5-2023 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X/
MORNING GLORY SUBDIVISION 1882 REVISION / //
LOCATION BY RECORD / /
Cumberland County,North Carolina BPB OTHER / //
CHECKED BY (SPECIFY)
CSB
n= 0.013 STORM DRAINAGE SCHEDULE CONTINUED —r.226
h= 26
INLET 0(+) Q(-) CAPTURED Tc I Cc
INLET Cc INLET UPSTREAM INLET INLET TOTAL INLET PIPE TIME RUNOFF
FROM TO AREAS AREA RUNOFF DISCHARGE BYPASS BYPASS DISCHARGE AREAS TIME TIME OF CONC. INTENSITY COEFF.
(INLETS) (AC) COEFF. (CFS) (CFS) (CFS) (CFS) (AC) (MIN) (MIN) (MIN) (IN/HR)
PIPE 1 IN PIPE 1 OUT PIPE 1 IN
PIPE 2 IN PIPE 2 OUT PIPE 2 IN
PIPE 3 IN PIPE 3 OUT PIPE 3 IN
1882-Storm Drainage for Spread.xls 10-YEAR Date:8/31/2023 Time:4:19 PM Page 1 of 4

STORM DRAINAGE/HYDRAULIC GRADE LINE DATE DESIGN PHASE
ANALYSIS(10 YEAR) 6-5-2023 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X/
MORNING GLORY SUBDIVISION 1882 REVISION / //
LOCATION BY RECORD / /
Cumberland County,North Carolina BPB OTHER / //
CHECKED BY (SPECIFY)
CSB
n= 0.013 STORM DRAINAGE SCHEDULE-CONTINUED
g= 226
h= 26
Q Q UPSTREAM
SIDE- CAPACITY SEGMENT UPPER LOWER TOP
FROM TO DISCHARGE STREAM SLOPE DIA. (FULL) V FULL LENGTH TIME INV. INV. ELEV.
(CFS) (CFS) I (IN) • (CFS) (FPS) (FT) (MIN) (FT) (FT) (FT)
PIPE 1 IN PIPE 1 OUT 5.18 0.00 0.0050 18 7.4 4.2 50 0.20 124.40 124.15 126.60
PIPE 2 IN PIPE 2 OUT 3.49 0.00 0.0054 18 7.7 4.4 46 0.18 126.85 126.60 129.74
PIPE 3 IN PIPE 3 OUT 15.48 0.00 0.0050 24 16.0 5.1 40 0.13 125.80 125.60 128.60
1882-Storm Drainage for Spread.xls 10-YEAR Date.8/31/2023 Time.4:19 PM Page 2 of 4

STORM DRAINAGE/HYDRAULIC GRADE LINE DATE DESIGN PHASE
ANALYSIS(10 YEAR) 6-5-2023 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X/
MORNING GLORY SUBDIVISION 1882 REVISION / //
LOCATION BY RECORD / /
Cumberland County,North Carolina BPB OTHER / //
CHECKED BY (SPECIFY)
CSB
n= 0.013 HYDRAULIC GRADE LINE CONTINUED
g= 226 BEND LOSS K'S
h= 26 90 DEG=0.7 30 DEG=0.28
60 DEG=0.55 15 DEG=0.10
PIPE HYDRAULIC SIDESTREAM HEAD LOSS BEND FRICTION FRICTION
FROM TO AREA RADIUS SUMMATION Hf He He Hb Ht LOSS SLOPE VELOCITY
(FT) (FT) (CFS) K (FT/FT) (FPS)
PIPE 1 IN PIPE 1 OUT 1.7671 0.3750 0.00 0.12 0.03 0.05 0.01 0.21 0.10 0.0024 2.92
PIPE 2 IN PIPE 2 OUT 1.7671 0.3750 0.00 0.05 0.02 0.02 0.01 0.09 0.10 0.0011 1.97
PIPE 3 IN PIPE 3 OUT 3.1416 0.5000 0.00 0.19 0.09 0.13 0.04 0.45 0.10 0.0046 4.90
1882-Storm Drainage for Spread.xls 10-YEAR Date:8/31/2023 Time:4:19 PM Page 3 of 4

STORM DRAINAGE/HYDRAULIC GRADE LINE DATE DESIGN PHASE
ANALYSIS(10 YEAR) 6-5-2023 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X/
MORNING GLORY SUBDIVISION 1882 REVISION / //
LOCATION BY RECORD / /
Cumberland County,North Carolina BPB OTHER / //
CHECKED BY (SPECIFY)
CSB
DESIGN CRITERIA:
n= 0.013 HYDRAULIC GRADE LINE-CONTINUED 1.DESIGN FOR THE 10 YR STORM
g= 226 2.ASSUME TIME OF CONCENTRATION TO
h= 26 AN INDIVIDUAL INLET=5 MIN.(Unless otherwise noted)
_ INLET W.S.ELEV. 3.INTENSITY=g/(h+T),FOR 10 YR STORM
OUTLET OUTLET INLET USE FLOW FREE- (g and h were derived from Raleigh-Durham Intensity-
FROM TO W.S.ELEV CONTOL CONTROL CONDITION I BOARD COMMENTS Duration-Frequency Charts,REF:NC Erosion and
(FT) (FT) (FT) (FT) CONTROL (FT) Sediment Control Planning and Design Manual)
4.MANNINGS"n"FACTOR=0.013
PIPE 1 IN PIPE 1 OUT 125.35 125.56 125.52 125.56 OUTLET 1.04 OK 5.RUNOFF COEFICIENT Cc=0.50(Per CR-7107)
PIPE 2 IN PIPE 2 OUT 127.80 127.89 127.77 127.89 OUTLET 1.85 OK
PIPE 3 IN PIPE 3 OUT 127.20 127.65 127.85 127.85 INLET 0.75 OK
1882-Storm Drainage for Spread.xls 10-YEAR Date:8/31/2023 Time:4:19 PM Page 4 of 4