SW6240606_Design Calculations (Riprap)_20240830 (10)

OUTLET PROTECTION DATE DESIGN PHASE
DESIGN 4-10-24 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X /
Village at Rockfish Phase V 2050 REVISION / /
LOCATION BY RECORD / /
Cumberland County, North Carolina CEK _OTHER / /
CHECKED BY (SPECIFY)
CSB
Storm Outlet Structure
FES No.= P0-2 Qio/Qfull = 0.34
Pipe Dia= 15 in V/Vfull = 0.89
Q10= 1.54 cfs V= 3.3 fps
Qfull = 4.60 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
III
�•�•�•�•�•� Riprap Class = B
••••••••••• L Apron Thickness = 18 in
010�0�0101 Apron Length 7.5 ft
101,
•••••••••••••• Apron Width @ Outlet = 3.75 ft
•• •• •••
Apron Width @ End = 8.8 ft
Length
Storm Outlet Structure
FES No.= P0-4 Q1o/Qfull = 0.38
Pipe Dia= 15 in V/Vfull = 0.93
Q10= 1.73 cfs V= 3.4 fps
Qfull = 4.55 cfs
Vfull = 3.70 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 = 7.5 ft
Apron Width @ Outlet = 3.75 ft
Apron Width @ End = 8.8 ft
Length
2050-Storm drainage.xlsx LATEST REVISION:6/13/2024 12:57 PM PAGE 1 OF 4

OUTLET PROTECTION DATE DESIGN PHASE
DESIGN 4-10-24 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X /
Village at Rockfish Phase V 2050 REVISION / /
LOCATION BY RECORD / /
Cumberland County, North Carolina CEK OTHER / /
CHECKED BY (SPECIFY)
CSB
Storm Outlet Structure
FES No.= P0-6 Q1o/Qfull = 0.38
Pipe Dia= 15 in V/Vfull = 0.93
Q10= 1.75 cfs V= 3.5 fps
Qfull = 4.57 cfs
Vfull = 3.72 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
L Length 1
Storm Outlet Structure
FES No.= P0-9 Q1o/Qfull = 0.50
Pipe Dia= 15 in V/Vfull = 1.00
Q10= 2.61 cfs V= 4.3 fps
Qfull = 5.24 cfs
Vfull = 4.26 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
0 •••••••••••••• =
�.�.���•�•�•�• -0 Apron Length7.5 ft
10101010:1:1:1 3 Apron Width @ Outlet = 3.75 ft
•• •• •••
Apron Width @ End = 8.8 ft
Length
2050-Storm drainage.xlsx LATEST REVISION:6/13/2024 12:57 PM PAGE 2 OF 4

OUTLET PROTECTION DATE DESIGN PHASE
DESIGN 4-10-24 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X /
Village at Rockfish Phase V 2050 REVISION / /
LOCATION BY RECORD / /
Cumberland County, North Carolina CEK OTHER / /
CHECKED BY (SPECIFY)
CSB
Storm Outlet Structure
FES No.= P0-12 Q1o/Qfull = 0.38
Pipe Dia= 15 in V/Vfull = 0.93
Q10= 3.72 cfs V= 7.4 fps
Qfull = 9.73 cfs
Vfull = 7.91 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
L Length 1
Storm Outlet Structure
FES No.= P0-15 Q1o/Qfull = 0.49
Pipe Dia= 15 in V/Vfull = 0.99
Q10= 2.67 cfs V= 4.3 fps
Qfull = 5.40 cfs
Vfull = 4.40 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
2050-Storm drainage.xlsx LATEST REVISION:6/13/2024 12:57 PM PAGE 3 OF 4

OUTLET PROTECTION DATE DESIGN PHASE
DESIGN 4-10-24 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X /
Village at Rockfish Phase V 2050 REVISION / X /
LOCATION BY RECORD / X /
Cumberland County, North Carolina CEK OTHER / X /
CHECKED BY (SPECIFY)
CSB
Storm Outlet Structure
FES No.= P0-18 Q1o/Qfull = 0.36
Pipe Dia= 15 in V/Vfull = 0.91
Q10= 4.52 cfs V= 9.3 fps
Qfull = 12.52 cfs
Vfull = 10.19 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 = 10.0 ft
Apron Width @ Outlet = 3.75 ft
Apron Width @ End = 11.3 ft
L Length 1
Storm Outlet Structure I
FES No.= PIPE 1 OUT Q1o/Qfull = 0.66
Pipe Dia= 30 in V/Vfull = 1.07
Q10= 20.07 cfs V= 6.6 fps
Qfull = 30.57 cfs
Vfull = 6.22 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
2050-Storm drainage.xlsx LATEST REVISION:6/13/2024 12:57 PM PAGE 4 OF 4