SW6240804_Design Calculations_20241015 (6)

OUTLET PROTECTION DATE DESIGN PHASE
DESIGN 6-5-24 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X /
Drake Landing Subdivision 2041 REVISION / /
LOCATION BY RECORD / /
Hoke County, North Carolina CEK OTHER / /
CHECKED BY (SPECIFY)
CSB
Storm Outlet Structure
FES No.= FES-43 Qio/Qfull = 0.44
Pipe Dia= 42 in V/Vfull = 0.96
Q10= 71.87 cfs V= 16.3 fps
Qfull = 163.33 cfs
Vfull = 16.95 fps
From Fig. 8.06.b.1: Zone = 6
From Fig. 8.06.b.2: D5o = 14 in
DMAX = 21 in
III
:•:•:•:•:•: Riprap Class = 2
i�����i���� L Apron Thickness = 31.5 in
0•0-0•0•0•: _�•������=�� 3 Apron Length 35.0 ft
1••�••�••�••�••�••�•• Apron Width @ Outlet = 10.5 ft
Apron Width @ End = 38.5 ft
Length
Storm Outlet Structure
FES No.= FES-84 Q1o/Qfull = 0.23
Pipe Dia= 36 in V/Vfull = 0.81
Q10= 40.03 cfs V= 19.6 fps
Qfull = 171.90 cfs
Vfull = 24.29 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 = 30.0 ft
Apron Width @ Outlet = 9 ft
Apron Width @ End = 33.0 ft
Length
2041-Storm drainage.xlsx LATEST REVISION:8/27/2024 4:22 PM PAGE 1 OF 4

OUTLET PROTECTION DATE DESIGN PHASE
DESIGN 6-5-24 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X /
Drake Landing Subdivision 2041 REVISION / /
LOCATION BY RECORD / /
Hoke County, North Carolina CEK OTHER / /
CHECKED BY (SPECIFY)
CSB
Storm Outlet Structure
FES No.= FES-126 Q1o/Qfull = 0.27
Pipe Dia= 42 in V/Vfull = 0.83
Q10= 57.36 cfs V= 18.3 fps
Qfull = 212.50 cfs
Vfull = 22.06 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 = 35.0 ft
Apron Width @ Outlet = 10.5 ft
Apron Width @ End = 38.5 ft
L Length 1
Storm Outlet Structure
FES No.= FES-130 Q1o/Qfull = 0.92
Pipe Dia= 15 in V/Vfull = 1.13
Q10= 4.23 cfs V= 4.2 fps
Qfull = 4.59 cfs
Vfull = 3.74 fps
From Fig. 8.06.b.1: Zone = 2
From Fig. 8.06.b.2: D5o = 8 in
DMAX = 12 in
•�•�•••••••••• Riprap Class = B
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Apron Thickness = 18 in
_Apron Length 7.5 ft
Apron Width @ Outlet = 3.75 ft
Apron Width @ End = 8.8 ft
Length
2041-Storm drainage.xlsx LATEST REVISION:8/27/2024 4:22 PM PAGE 2 OF 4

OUTLET PROTECTION DATE DESIGN PHASE
DESIGN 6-5-24 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X /
Drake Landing Subdivision 2041 REVISION / /
LOCATION BY RECORD / /
Hoke County, North Carolina CEK OTHER / /
CHECKED BY (SPECIFY)
CSB
Storm Outlet Structure
FES No.= FES-133 Q1o/Qfull = 0.54
Pipe Dia= 15 in V/Vfull = 1.01
Q10= 6.00 cfs V= 9.1 fps
Qfull = 11.06 cfs
Vfull = 9.00 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 = 10.0 ft
Apron Width @ Outlet = 3.75 ft
Apron Width @ End = 11.3 ft
L Length
Storm Outlet Structure
FES No.= PIPE 1 OUT Q1o/Qfull = 0.52
Pipe Dia= 30 in V/Vfull = 1.00
Q10= 20.48 cfs V= 8.0 fps
Qfull = 39.41 cfs
Vfull = 8.02 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 = 20.0 ft
Apron Width @ Outlet = 7.5 ft
Apron Width @ End = 22.5 ft
Length
2041-Storm drainage.xlsx LATEST REVISION:8/27/2024 4:22 PM PAGE 3 OF 4

OUTLET PROTECTION DATE DESIGN PHASE
DESIGN 6-5-24 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X /
Drake Landing Subdivision 2041 REVISION / X /
LOCATION BY RECORD / X /
Hoke County, North Carolina CEK OTHER / X /
CHECKED BY (SPECIFY)
CSB _
Storm Outlet Structure
FES No.= PIPE 2 OUT Q1o/Qfull = 1.04
Pipe Dia= 18 in V/Vfull = 1.14
Qio= 7.93 cfs V= 4.9 fps
Qfull = 7.63 cfs
Vfull = 4.31 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 9.0 ft
Apron Width @ Outlet = 4.5 ft
Apron Width @ End = 10.5 ft
L Length 1
Storm Outlet Structure
FES No.= FES-135 Q1o/Qfull = 0.79
Pipe Dia= 48 in V/Vfull = 1.10
Q10= 115.00 cfs V= 12.8 fps
Qfull = 145.27 cfs
Vfull = 11.54 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 40.0 ft
Apron Width @ Outlet = 12 ft
Apron Width @ End = 44.0 ft
Length
2041-Storm drainage.xlsx LATEST REVISION:8/27/2024 4:22 PM PAGE 4 OF 4