SW6240805_Design Calculations (Riprap)_20241016

OUTLET PROTECTION IIM DATE DESIGN PHASE
DESIGN 08-07-24 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X /
Mcqueen Farms Subdivision 2051 REVISION / /
LOCATION BY RECORD / /
Antioch, North Carolina CJP OTHER / /
CHECKED BY (SPECIFY)
CSB
Storm Outlet Structure
FES No.= PO 12 Qio/Qfull = 0.48
Pipe Dia= 15 in V/Vfull = 0.99
Q10= 4.40 cfs V= 7.3 fps
Qfull = 9.10 cfs
Vfull = 7.40 fps
From Fig. 8.06.b.1: Zone = 2
From Fig. 8.06.b.2: D5o = 8 in
DMAX = 12 in
!.Ii:i;PStItIi;
: Riprap Class = B
• Apron Thickness = 18 in
, _� Apron Length 7.5 ft
• Apron Width @ Outlet = 3.75 ft
Apron Width @ End = 8.8 ft
Length
Storm Outlet Structure
FES No.= PO 11 Q1o/Qfull = 0.97
Pipe Dia= 15 in V/Vfull = 1.14
Qio= 5.98 cfs V= 5.7 fps
Qfull = 6.20 cfs
Vfull = 5.04 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
2051 Storm.xlsx LATEST REVISION:8/29/2024 12:59 PM PAGE 1 OF 4

OUTLET PROTECTION DATE DESIGN PHASE
DESIGN 08-07-24 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X /
Mcqueen Farms Subdivision 2051 REVISION / /
LOCATION BY RECORD / /
Antioch, North Carolina CJP OTHER / /
CHECKED BY (SPECIFY)
CSB
Storm Outlet Structure
FES No.= PO 10 Q1o/Qfull = 0.64
Pipe Dia= 15 in V/Vfull = 1.06
Qio= 2.93 cfs V= 3.9 fps
Qfull = 4.56 cfs
Vfull = 3.71 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
Storm Outlet Structure
FES No.= PO 15 Q1o/Qfull = 0.94
Pipe Dia= 15 in V/Vfull = 1.14
Q10= 5.81 cfs V= 5.7 fps
Qfull = 6.17 cfs
Vfull = 5.02 fps
From Fig. 8.06.b.1: Zone = 2
From Fig. 8.06.b.2: D5o = 8 in
DMAX = 12 in
�:�:�•�•�•�•�• Riprap Class = B
�•�i�•�i�i�•�• s Apron Thickness = 18 in
0 =
.,Mat•�•�,�• -0 Apron Length7.5 ft
��������:1:1:1 3 Apron Width @ Outlet = 3.75 ft
004
Apron Width @ End = 8.8 ft
Length
2051 Storm.xlsx LATEST REVISION:8/29/2024 12:59 PM PAGE 2 OF 4

OUTLET PROTECTION DATE DESIGN PHASE
DESIGN 08-07-24 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X /
Mcqueen Farms Subdivision 2051 REVISION / /
LOCATION BY RECORD / /
Antioch, North Carolina CJP OTHER / /
CHECKED BY (SPECIFY)
CSB
Storm Outlet Structure
FES No.= PO 18 Q1o/Qfull = 0.07
Pipe Dia= 15 in V/Vfull = 0.52
Qio= 0.31 cfs V= 2.0 fps
Qfull = 4.61 cfs
Vfull = 3.75 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.= PO 27 Q1o/Qfull = 0.96
Pipe Dia= 18 in V/Vfull = 1.14
Q10= 7.48 cfs V= 5.0 fps
Qfull = 7.79 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 = 9.0 ft
Apron Width @ Outlet = 4.5 ft
Apron Width @ End = 10.5 ft
Length
2051 Storm.xlsx LATEST REVISION:8/29/2024 12:59 PM PAGE 3 OF 4

OUTLET PROTECTION DATE DESIGN PHASE
DESIGN 08-07-24 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X /
Mcqueen Farms Subdivision 2051 REVISION / X /
LOCATION BY RECORD / X /
Antioch, North Carolina CJP OTHER / X /
CHECKED BY (SPECIFY)
CSB
Storm Outlet Structure
FES No.= PO 22 Q1o/Qfull = 0.94
Pipe Dia= 15 in V/Vfull = 1.14
Q10= 4.23 cfs V= 4.2 fps
Qfull = 4.51 cfs
Vfull = 3.67 fps
From Fig. 8.06.b.1: Zone = 2
From Fig. 8.06.b.2: D5o = 8 in
DMAX = 12 in
gorgorgorgq Riprap Class = B
L Apron Thickness = 18 in
Apron Length = 7.5 ft
Apron Width @ Outlet = 3.75 ft
Apron Width @ End = 8.8 ft
Length
2051 Storm.xlsx LATEST REVISION:8/29/2024 12:59 PM PAGE 4 OF 4