SW6230901_Design Calculations_20231115 (4)

OUTLET PROTECTION DATE DESIGN PHASE
DESIGN 6-8-2023 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X /
ROYAL FARMS PH II 1960 REVISION / /
LOCATION BY RECORD / /
Cumberland County, North Carolina BPB OTHER / /
CHECKED BY (SPECIFY)
CSB
Storm Outlet Structure
FES No.= PIPE 1 OUT Qio/Qfull = 0.52
Pipe Dia= 24 in V/Vfull = 1.00
Q10= 8.24 cfs V= 5.1 fps
Qfull = 16.00 cfs
Vfull = 5.09 fps
From Fig. 8.06.b.1: Zone = 2
From Fig. 8.06.b.2: D50 = 8 in
DMAX = 12 in
11 :1
Riprap Class = B
Apron Thickness = 18 in
_Apron Length 12.0 ft
• Apron Width @ Outlet = 6 ft
•• •• •••
Apron Width @ End = 14.0 ft
Length
Storm Outlet Structure
FES No.= PIPE 2 OUT Q1o/Qfull = 1.21
Pipe Dia= 18 in V/Vfull = MAX
Qio= 8.05 cfs V= #VALUE! fps
Qfull = 6.64 cfs
Vfull = 3.75 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 = 9.0 ft
Apron Width @ Outlet = 4.5 ft
Apron Width @ End = 10.5 ft
L Length
1960-Storm Drainage for Spread.xls LATEST REVISION:11/15/2023 7:13 AM PAGE 1 OF 1