HomeMy WebLinkAboutSW6240103_Design Calculations (Riprap)_20240119 OUTLET PROTECTION DATE DESIGN PHASE
DESIGN 11-30-23 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X /
The Leander Lee Preserve 2006 REVISION / /
LOCATION BY RECORD / /
Harnett County, North Carolina BPB OTHER / /
CHECKED BY (SPECIFY)
CSB
Storm Outlet Structure
FES No.= PIPE 1 OUT Qio/Qfull = 0.95
Pipe Dia= 36 in V/Vfull = 1.14
Q10= 28.03 cfs V= 4.7 fps
Qfull = 29.40 cfs
Vfull = 4.15 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
i•••••i•••• L Apron Thickness = 18 in
••••••••••• _•�•������••�� 3 Apron Length 18.0 ft
1•�•�•�•1•1•�• Apron Width @ Outlet = 9 ft
•• •• •••
Apron Width @ End = 21.0 ft
Length
Storm Outlet Structure
FES No.= PIPE 2 OUT Q1o/Qfull = 0.85
Pipe Dia= 18 in V/Vfull = 1.12
Qio= 6.73 cfs V= 5.0 fps
Qfull = 7.92 cfs
Vfull = 4.47 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
2006-Storm drainage.xlsx LATEST REVISION:1/19/2024 10:48 AM PAGE 1 OF 2
OUTLET PROTECTION DATE DESIGN PHASE
DESIGN 11-30-23 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X /
The Leander Lee Preserve 2006 REVISION / /
LOCATION BY RECORD / /
Harnett County, North Carolina BPB OTHER / /
CHECKED BY (SPECIFY)
CSB
Storm Outlet Structure
FES No.= PIPE 3 OUT Q1o/Qfull = 0.96
Pipe Dia= 18 in V/Vfull = 1.14
Qio= 7.99 cfs V= 5.3 fps
Qfull = 8.30 cfs
Vfull = 4.69 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.= PIPE 4 OUT Q1o/Qfull = 0.70
Pipe Dia= 18 in V/Vfull = 1.08
Q10= 5.83 cfs V= 5.1 fps
Qfull = 8.30 cfs
Vfull = 4.69 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
Apron Thickness = 18 in
_Apron Length 9.0 ft
Apron Width @ Outlet = 4.5 ft
Apron Width @ End = 10.5 ft
Length
2006-Storm drainage.xlsx LATEST REVISION:1/19/2024 10:48 AM PAGE 2 OF 2