SW6230705_Design Calculations_20240304 (2)

OUTLET PROTECTION DATE DESIGN PHASE
DESIGN 04-04-23 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X /
Serenity Phase 3, 4&5 1975 REVISION / /
LOCATION BY RECORD / /
Harnett County, North Carolina CJP OTHER / /
CHECKED BY (SPECIFY)
CSB
Storm Outlet Structure
FES No.= FES 192 Qio/Qfull = 0.87
Pipe Dia= 30 in V/Vfull = 1.12
Q10= 35.57 cfs V= 9.4 fps
Qfull = 40.99 cfs
Vfull = 8.34 fps
From Fig. 8.06.b.1: Zone = 6
From Fig. 8.06.b.2: D5o = 14 in
DMAX = 21 in
III
:.:�:�44Riprap Class = 2
i�����i���� L Apron Thickness = 31.5 in
0•0-0•0•0•: _�•������=�� 3 Apron Length 25.0 ft
1••�••�••�••�••�••�•• Apron Width @ Outlet = 7.5 ft
Apron Width @ End = 27.5 ft
Length
Storm Outlet Structure
FES No.= FES 195 Q1o/Qfull = 0.59
Pipe Dia= 48 in V/Vfull = 1.04
Q10= 84.54 cfs V= 11.8 fps
Qfull = 143.30 cfs
Vfull = 11.39 fps
From Fig. 8.06.b.1: Zone = 6
From Fig. 8.06.b.2: D50 = 14 in
DMAX = 21 in
Riprap Class = 2
s Apron Thickness = 31.5 in
3 Apron Length = 40.0 ft
Apron Width @ Outlet = 12 ft
Apron Width @ End = 44.0 ft
Length
1975 Storm.xlsx LATEST REVISION:3/4/2024 11:51 AM PAGE 1 OF 7

OUTLET PROTECTION DATE DESIGN PHASE
DESIGN 04-04-23 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X /
Serenity Phase 3, 4&5 1975 REVISION / /
LOCATION BY RECORD / /
Harnett County, North Carolina CJP OTHER / /
CHECKED BY (SPECIFY)
CSB
Storm Outlet Structure
FES No.= FES 200 Q1o/Qfull = 0.38
Pipe Dia= 42 in V/Vfull = 0.93
Q10= 45.21 cfs V= 11.5 fps
Qfull = 118.78 cfs
Vfull = 12.33 fps
From Fig. 8.06.b.1: Zone = 3
From Fig. 8.06.b.2: D50 = 10 in
DMAX = 15 in
Riprap Class = 1
s Apron Thickness = 22.5 in
3 Apron Length 28.0 ft
Apron Width @ Outlet = 10.5 ft
Apron Width @ End = 31.5 ft
L Length
Storm Outlet Structure
FES No.= FES 201 Q1o/Qfull = 0.26
Pipe Dia= 24 in V/Vfull = 0.83
Q10= 13.41 cfs V= 13.5 fps
Qfull = 51.22 cfs
Vfull = 16.28 fps
From Fig. 8.06.b.1: Zone = 2
From Fig. 8.06.b.2: D5o = 8 in
DMAX = 12 in
•:••••••••••••• Riprap Class = B
IttIIIIiJJJIII
s Apron Thickness = 18 in
MMN * '8 Apron Length = 12.0 ft
Apron Width @Outlet = 6 ft
Apron Width @ End = 14.0 ft
Length
1975 Storm.xlsx LATEST REVISION:3/4/2024 11:51 AM PAGE 2 OF 7

OUTLET PROTECTION DATE DESIGN PHASE
DESIGN 04-04-23 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X /
Serenity Phase 3, 4&5 1975 REVISION / /
LOCATION BY RECORD / /
Harnett County, North Carolina CJP OTHER / /
CHECKED BY (SPECIFY)
CSB
Storm Outlet Structure
FES No.= FES 198 Q1o/Qfull = 0.41
Pipe Dia= 42 in V/Vfull = 0.94
Q10= 58.14 cfs V= 13.9 fps
Qfull = 142.23 cfs
Vfull = 14.76 fps
From Fig. 8.06.b.1: Zone = 3
From Fig. 8.06.b.2: D50 = 10 in
DMAX = 15 in
Riprap Class = 1
s Apron Thickness = 22.5 in
3 Apron Length 28.0 ft
Apron Width @ Outlet = 10.5 ft
Apron Width @ End = 31.5 ft
L Length
Storm Outlet Structure
FES No.= FES 203 Q1o/Qfull = 0.21
Pipe Dia= 30 in V/Vfull = 0.78
Q10= 25.43 cfs V= 19.2 fps
Qfull = 120.55 cfs
Vfull = 24.53 fps
From Fig. 8.06.b.1: Zone = 6
From Fig. 8.06.b.2: D5o = 14 in I
DMAX = 21 in
Riprap Class = 2
s Apron Thickness = 31.5 in
3 Apron Length = 25.0 ft
Apron Width @ Outlet = 7.5 ft
Apron Width @ End = 27.5 ft
Length
1975 Storm.xlsx LATEST REVISION:3/4/2024 11:51 AM PAGE 3 OF 7

OUTLET PROTECTION DATE DESIGN PHASE
DESIGN 04-04-23 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X /
Serenity Phase 3, 4&5 1975 REVISION / X /
LOCATION BY RECORD / X /
Harnett County, North Carolina CJP OTHER / X /
CHECKED BY (SPECIFY)
CSB
Storm Outlet Structure
FES No.= FES 204 Q1o/Qfull = 0.23
Pipe Dia= 30 in V/Vfull = 0.81
Q10= 29.46 cfs V= 21.4 fps
Qfull = 130.58 cfs
Vfull = 26.57 fps
From Fig. 8.06.b.1: Zone = 6
From Fig. 8.06.b.2: D5o = 14 in
DMAX = 21 in
Riprap Class = 2
s Apron Thickness = 31.5 in
3 Apron Length = 25.0 ft
Apron Width @ Outlet = 7.5 ft
Apron Width @ End = 27.5 ft
L Length 1
Storm Outlet Structure
FES No.= FES 216 Q1o/Qfull = 0.51
Pipe Dia= 15 in V/Vfull = 1.00
Q10= 8.11 cfs V= 12.9 fps
Qfull = 15.82 cfs
Vfull = 12.88 fps
From Fig. 8.06.b.1: Zone = 2
From Fig. 8.06.b.2: D5o = 8 in
DMAX = 12 in
Riprap Class = B
s Apron Thickness = 18 in
3 Apron Length = 7.5 ft
Apron Width @ Outlet = 3.75 ft
Apron Width @ End = 8.8 ft
Length
1975 Storm.xlsx LATEST REVISION:3/4/2024 11:51 AM PAGE 4 OF 7

OUTLET PROTECTION DATE DESIGN PHASE
DESIGN 04-04-23 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X /
Serenity Phase 3, 4&5 1975 REVISION / X /
LOCATION BY RECORD / X /
Harnett County, North Carolina CJP OTHER / X /
CHECKED BY (SPECIFY)
CSB
Storm Outlet Structure
FES No.= FES 208 Q1o/Qfull = 0.31
Pipe Dia= 24 in V/Vfull = 0.87
Q10= 22.10 cfs V= 19.7 fps
Qfull = 70.86 cfs
Vfull = 22.53 fps
From Fig. 8.06.b.1: Zone = 5
From Fig. 8.06.b.2: D5o = 14 in
DMAX = 21 in
Riprap Class = 2
s Apron Thickness = 31.5 in
3 Apron Length = 20.0 ft
Apron Width @ Outlet = 6 ft
Apron Width @ End = 22.0 ft
L Length
Storm Outlet Structure
FES No.= FES 206 Q1o/Qfull = 0.15
Pipe Dia= 42 in V/Vfull = 0.72
Q10= 37.30 cfs V= 18.2 fps
Qfull = 243.59 cfs
Vfull = 25.28 fps
From Fig. 8.06.b.1: Zone = 5
From Fig. 8.06.b.2: D5o = 14 in
DMAX = 21 in
Riprap Class = 2
s Apron Thickness = 31.5 in
3 Apron Length = 35.0 ft
Apron Width @ Outlet = 10.5 ft
Apron Width @ End = 38.5 ft
Length
1975 Storm.xlsx LATEST REVISION:3/4/2024 11:51 AM PAGE 5 OF 7

OUTLET PROTECTION DATE DESIGN PHASE
DESIGN 04-04-23 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X /
Serenity Phase 3, 4&5 1975 REVISION / X /
LOCATION BY RECORD / X /
Harnett County, North Carolina CJP OTHER / X /
CHECKED BY (SPECIFY)
CSB
Storm Outlet Structure
FES No.= FES 210 Q1o/Qfull = 0.80
Pipe Dia= 30 in V/Vfull = 1.11
Qio= 25.99 cfs V= 7.3 fps
Qfull = 32.39 cfs
Vfull = 6.59 fps
From Fig. 8.06.b.1: Zone = 2
From Fig. 8.06.b.2: D5o = 8 in
DMAX = 12 in
Riprap Class = B
s Apron Thickness = 18 in
3 Apron Length 15.0 ft
Apron Width @ Outlet = 7.5 ft
Apron Width @ End = 17.5 ft
L Length
Storm Outlet Structure
FES No.= FES 213 Q1o/Qfull = 0.22
Pipe Dia= 36 in V/Vfull = 0.78
Q10= 29.10 cfs V= 14.6 fps
Qfull = 132.59 cfs
Vfull = 18.73 fps
From Fig. 8.06.b.1: Zone = 3
From Fig. 8.06.b.2: D5o = 10 in
DMAX = 15 in
Riprap Class = 1
s Apron Thickness = 22.5 in
3 Apron Length 24.0 ft
Apron Width @ Outlet = 9 ft
Apron Width @ End = 27.0 ft
Length
1975 Storm.xlsx LATEST REVISION:3/4/2024 11:51 AM PAGE 6 OF 7

OUTLET PROTECTION DATE DESIGN PHASE
DESIGN 04-04-23 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X /
Serenity Phase 3, 4&5 1975 REVISION / X /
LOCATION BY RECORD / X /
Harnett County, North Carolina CJP OTHER / X /
CHECKED BY (SPECIFY)
CSB
Storm Outlet Structure
FES No.= FES 215 Q1o/Qfull = 0.33
Pipe Dia= 30 in V/Vfull = 0.89
Q10= 22.52 cfs V= 12.4 fps
Qfull = 68.42 cfs
Vfull = 13.92 fps
From Fig. 8.06.b.1: Zone = 3
From Fig. 8.06.b.2: D5o = 10 in
DMAX = 15 in
Riprap Class = 1
s Apron Thickness = 22.5 in
Apron Length = 20.0 ft
Apron Width @ Outlet = 7.5 ft
Apron Width @ End = 22.5 ft
Length
1975 Storm.xlsx LATEST REVISION:3/4/2024 11:51 AM PAGE 7 OF 7