SW6201003_Calcs (Riprap)_20201008

' ' • •
DATE
DESIGN PHASE
M09-08-20
PRELIM
rPRE NAME
PROJECT NO
CONSTR / XRockfish
Ph IV
1617
REVISIONN
RECORD
BY
Gra 's Creek, North Carolina
UP
OTHER
(SPECIFY)
CHECKED BY
CSB
Storm Outlet Structure
FES No.=
FES 1
Pipe Dia=
36
in
Q10 =
28.70
cfs
Qfull =
53.28
cfs
Vfull =
7.53
fps
From Fig.
8.06.b.1:
From Fig.
8.06.b.2:
t
3
Length
Storm Outlet Structure
FES No.=
FES 42
Pipe Dia=
30
in
Q10 =
65.68
cfs
Qfull =
90.80
cfs
Vfull =
18.47
fps
From Fig.
8.06.b.1:
From Fig.
8.06.b.2:
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 = 0.54
V/Vfu 11 = 1.01
V = 7.6 fps
= 2
= 8 in
= 12 in
= B
= 18 in
= 18.0 ft
= 9 ft
= 21.0 ft
Q10/QfuI1 = 0.72
V/Vfu11 = 1.08
V = 20.0 fps
= 3
= 10 in
= 15 in
= 1
= 22.5 in
= 20.0 ft
= 7.5 ft
= 22.5 ft
1617 Storm.xlsx LATEST REVISION: 10/8/2020 6:27 AM PAGE 1 OF 1