SW6220201_Design Calculations (Riprap)_20220510

ATE
DESIGN PHASE
0-28-21
PRELIM
rPROJECT NAME
PROJECT NO
CONSTR / Xshire
Phase 8
1775
REVISIONTION
RECORD
BY
Harnett County, North Carolina
UP
OTHER
(SPECIFY)
CHECKED BY
CSB
Storm Outlet Structure
FES No.=
FES 24
Pipe Dia=
30
in
Q10 =
27.71
cfs
Qfull =
115.64
cfs
Vfull =
23.53
fps
From Fig.
8.06.b.1:
From Fig.
8.06.b.2:
s
Length
Storm Outlet Structure
FES No.=
FES 52
Pipe Dia=
15
in
Q10 =
2.19
cfs
Qfull =
5.21
cfs
Vfull =
4.24
fps
From Fig.
8.06.b.1:
From Fig.
8.06.b.2:
s
v 3
Length
Zone
D50
DMAX
Riprap Class
Apron Thickness
Apron Length
Apron Width @ Outlet
Apron Width @ End
Zone
D50
DMAX
Riprap Class
Apron Thickness
Apron Length
Apron Width @ Outlet
Apron Width @ End
Q10/QfuI1 = 0.24
V/Vfu 11 = 0.81
V = 19.0 fps
= 2
= 8 in
= 12 in
= B
= 18 in
= 15.0 ft
= 7.5 ft
= 17.5 ft
Q10/QfuI1 = 0.42
V/Vfu I = 0.94
V = 4.0 fps
= 2
= 8 in
= 12 in
= B
= 18 in
= 7.5 ft
= 3.75 ft
= 8.8 ft
1775 Storm System.xlsx LATEST REVISION: 5/10/2022 6:10 PM PAGE 1 OF 4

ATE
DESIGN PHASE
PRELIM
0-28-21
rPROJECT NAME
PROJECT NO
CONSTR / Xshire
Phase 8
1775
REVISIONTION
RECORD
BY
Harnett County, North Carolina
UP
OTHER
(SPECIFY)
CHECKED BY
CSB
Storm Outlet Structure
FES No.=
FES 55
Pipe Dia=
48
in
Q10 =
127.00
cfs
Qfull =
197.31
cfs
Vfull =
15.68
fps
From Fig.
8.06.b.1:
From Fig.
8.06.b.2:
Storm Outlet Structure
FES No.=
TST 1 SKIMMER
Pipe Dia=
2 in
Q10 =
0.02 cfs
Qfull =
0.02 cfs
Vfull =
2.86 fps
From Fig.
8.06.b.1:
From Fig.
8.06.b.2:
s
Length
Zone
D5o
DMAX
Riprap Class
Apron Thickness
Apron Length
Apron Width @ Outlet
Apron Width @ End
Zone
D5o
DMAX
Riprap Class
Apron Thickness
Apron Length
Apron Width @ Outlet
Apron Width @ End
Q1 o/Qfu I = 0.64
V/Vfu11 = 1.06
V = 16.5 fps
= 3
= 10 in
= 15 in
= 1
= 22.5 in
= 32.0 ft
= 12 ft
= 36.0 ft
Q10/Qfu11 = 1.00
V/Vfu I = 1.14
V = 3.3 fps
= 2
= 8 in
= 12 in
= B
= 18 in
= 1.0 ft
= 0.5 ft
= 1.2 ft
1775 Storm System.xlsx LATEST REVISION: 5/10/2022 6:10 PM PAGE 2 OF 4

ATE
DESIGN PHASE
PRELIM
0-28-21
rPROJECT NAME
PROJECT NO
CONSTR / Xshire
Phase 8
1775
REVISIONTION
RECORD
BY
Harnett County, North Carolina
UP
OTHER
(SPECIFY)
CHECKED BY
CSB
Storm Outlet Structure
FES No.=
FES 48
Pipe Dia=
24
in
Q10 =
24.69
cfs
Qfull =
63.68
cfs
Vfull =
20.24
fps
From Fig.
8.06.b.1:
From Fig.
8.06.b.2:
Storm Outlet Structure
FES No.=
DRIVEWAY DN
Pipe Dia=
18 in
Q10 =
6.09 cfs
Qfull =
19.79 cfs
Vfull =
11.19 fps
From Fig.
8.06.b.1:
From Fig.
8.06.b.2:
s
Length
Zone
D5o
DMAX
Riprap Class
Apron Thickness
Apron Length
Apron Width @ Outlet
Apron Width @ End
Zone
D5o
DMAX
Riprap Class
Apron Thickness
Apron Length
Apron Width @ Outlet
Apron Width @ End
Q10/Qfu11 = 0.39
V/Vfu11 = 0.93
V = 18.8 fps
= 2
= 8 in
= 12 in
= B
= 18 in
= 12.0 ft
= 6 ft
= 14.0 ft
Q1 o/Qfu I = 0.31
V/Vfu11 = 0.87
V = 9.8 fps
= 2
= 8 in
= 12 in
= B
= 18 in
= 9.0 ft
= 4.5 ft
= 10.5 ft
1775 Storm System.xlsx LATEST REVISION: 5/10/2022 6:10 PM PAGE 3 OF 4

• ' ' • •
DATE
DESIGN PHASE
PRELIM
E10-28-21
PROJECT NAME
PROJECT NO
CONSTR
/ X /
Woodshire Phase 8
1775
REVISION
RECORD
/ X /
/ X /
LOCATION
BY
Harnett County, North Carolina
UP
OTHER
(SPECIFY)
/ X /
CHECKED BY
CSB
Storm Outlet Structure
FES No.= Greenbay 7+80
Q10/Qful1 =
0.62
Pipe Dia= 18 in
V/Vfull =
1.05
Q10 = 15.49 cfs
V =
14.8
fps
Qfull = 24.97 cfs
Vfull = 14.14 fps
From Fig. 8.06.b.1:
Zone
=
2
From Fig. 8.06.b.2:
D50
=
8
in
DMAX
=
12
in
Riprap Class
=
B
v s
Apron Thickness
=
18
in
v 3
Apron Length
=
9.0
ft
Apron Width @ Outlet
=
4.5
ft
Length
Apron Width @ End
=
10.5
ft
1775 Storm System.xlsx LATEST REVISION: 5/10/2022 6:10 PM PAGE 4 OF 4