HomeMy WebLinkAboutSW6220701_Design Calculations_20220810 (5)• " `e
PROJECT NAME
ROCK HILL MANOR
DATE
6-1-2022
PROJECT NO
1809
DESIGN PHASE
PRELIM
CONSTR
REVISION
/ X /
LOCATION
Cumberland County, North Carolina
BY
BPB
RECORD
OTHER
CHECKED BY
CSB
(SPECIFY)
n= 0.013
9= 226
h= 26
STORM DRAINAGE SCHEDULE
CONTINUED
AREAS
(INLETS)
INLET
AREA
(AC)
INLET
Cc
RUNOFF
COEFF.
INLET
DISCHARGE
(CFS)
Q (+)
UPSTREAM
BYPASS
(CFS)
Q(-)
INLET
BYPASS
(CFS)
CAPTURED
INLET
DISCHARGE
(CFS)
TOTAL
AREAS
(AC)
INLET
TIME
(MIN)
PIPE
TIME
(MIN)
Tc
TIME
OF CONC.
(MIN)
I
INTENSITY
(IN/HR)
Cc
RUNOFF
COEFF.
FROM TO
PIPE 1 IN
PIPE 1 OUT
PIPE 1 IN
PIPE 2 IN
PIPE 2 OUT
PIPE 2 IN
1809-Storm Drainage for Spread.xls 10-YEAR Date 8110/2022 Time: 1:17 PM Pagel of 4
• " `
PROJECT NAME
ROCK HILL MANOR
`
ILIA
I E
6-1-2022
PROJECT NO
1809
DESIGN PHASE
PRELIM
CONSTR
REVISION
/ /
/ X /
LOCATION
Cumberland County, North Carolina
BY
BPB
RECORD
OTHER
CHECKED BY
CSB
(SPECIFY)
n= 0.013
9= 226
h= 26
STORM DRAINAGE SCHEDULE - CONTINUED
Q
DISCHARGE
(CFS)
Q
SIDE-
STREAM
(CFS)
SLOPE
DIA.
(IN)
CAPACITY
(FULL)
(CFS)
V FULL
(FPS)
LENGTH
(FT)
SEGMENT
TIME
(MIN)
UPPER
INV.
(FT)
LOWER
INV.
(FT)
UPSTREAM
TOP
ELEV.
(FT)
FROM TO
PIPE 1 IN
PIPE 1 OUT
1.69
0.00
0.0054
18
7.7
4.3
56
0.21
114.60
114.30
118.10
PIPE 2 IN
PIPE 2 OUT
9.09
0.00
0.0054
24
16.6
5.3
56
0.18
121.20
120.90
125.00
1809-Storm Drainage for Spread.xls 10-YEAR Date 8110t2022 Time: 1:17 PM Page 2 of 4
• " ` `
PROJECT NAME
ROCK HILL MANOR
`
ILIA
I E
6-1-2022
PROJECT NO
1809
DESIGN PHASE
PRELIM / /
CONSTR / X /
REVISION
LOCATION
Cumberland County, North Carolina
BY
BPB
RECORD
OTHER
CHECKED BY
CSB
(SPECIFY)
n= 0.013
g= 226
h= 26
HYDRAULIC GRADE LINE
PIPE HYDRAULIC SIDESTREAM
AREA RADIUS SUMMATION
(FT) (FT) (CFS)
Hf
90 DEG=0.7
60 DEG=0.55
HEAD LOSS
He He
BEND LOSS
Hb
K'S
30 DEG=0.28
15 DEG=0.10
Ht
BEND
LOSS
K
CONTINUED
FRICTION FRICTION
SLOPE VELOCITY
(FT/FT) (FPS)
FROM TO
PIPE 1 IN
PIPE 1 OUT
1.7671
0.3750
0.00
0.01
0.00
0.00
0.00
0.02
0.10
0.0003
0.95
PIPE 2 IN
PIPE 2 OUT
3.1416
0.5000
0.00
0.09
0.03
0.05
0.01
0.18
0.10
0.0016
2.88
1809-Storm Drainage for Spread.xls 10-YEAR Date 8/10/2022 Time: 1:17 PM Page 3 of 4
• " 1-—'
PROJECT NAME
ROCK HILL MANOR
DATE
6-1-2022
DESIGN PHASE
PRELIM
CONSTR / X /
REVISION
PROJECT NO
1809
LOCATION
Cumberland County, North Carolina
BY
BPB
RECORD
OTHER
CHECKED BY
CSB
(SPECIFY)
n= 0.013
g= 226
h= 26
HYDRAULIC GRADE LINE - CONTINUED
DESIGN CRITERIA:
1. DESIGN FOR THE 10 YR STORM
2. ASSUME TIME OF CONCENTRATION TO
AN INDIVIDUAL INLET = 5 MIN. (Unless otherwise noted)
3. INTENSITY = g/(h+T), FOR 10 YR STORM
(g and h were derived from Raleigh -Durham Intensity -
Duration -Frequency Charts, REF: NC Erosion and
Sediment Control Planning and Design Manual)
4. MANNINGS "n" FACTOR= 0.013
5. RUNOFF COEFICIENT Cc=0.50 (Per CR-7107)
OUTLET
W.S. ELEV
(FT)
INLET W.S. ELEV.
FLOW
CONDITION
CONTROL
FREE-
BOARD
(FT)
COMMENTS
FROM TO
OUTLET INLET USE
CONTOL CONTROL
(FT) (FT) (FT)
PIPE 1 IN
PIPE 1 OUT
115.50
115.52
115.39
115.52
OUTLET
2.58
OK
PIPE 2 IN
PIPE 2 OUT
122.50
122.68
122.56
122.68
OUTLET
2.32
OK
1809-Storm Drainage for Spread.xls 10-YEAR Date 8110/2022 Time: 1:17 PM Page 4 of 4