HomeMy WebLinkAboutSW6220702_Design Calculations (Storm Drainage)_20220810•
PROJECT NAME
Collier Gate Estates
DATE
5-24-2022
PROJECT NO
1279
DESIGN PHASE
PRELIM
CONSTR
REVISION
/ /
/ X /
LOCATION
Cumberland County, North Carolina
BY
BPB
RECORD
OTHER
CHECKED BY
CSB
(SPECIFY)
n=
9=
h=
0.013
226
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
PIPE 3 IN
PIPE 3 OUT
PIPE 3 IN
PIPE 4 IN
PIPE 4 OUT
PIPE 4 IN
PIPE 5 IN
PIPE 5 OUT
PIPE 5 IN
1784-Storm Drainage for Spread(REDO).xls 10-YEAR Date 8110/2022 Time: 1:43 PM Page 1 of 4
• " I " `c
PROJECT NAME
Collier Gate Estates
DATE
5-24-2022
PROJECT NO
1279
DESIGN PHASE
PRELIM
CONSTR
REVISION
/ /
/ X /
LOCATION
Cumberland County, North Carolina
BY
BPB
RECORD
OTHER
CHECKED BY
CSB
(SPECIFY)
n=
9=
h=
0.013
226
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
23.87
0.00
0.0172
30
53.8
10.9
64
0.10
113.30
112.20
116.75
PIPE 2 IN
PIPE 2 OUT
22.63
0.00
0.0057
30
30.9
6.3
44
0.12
112.60
112.35
115.70
PIPE 3 IN
PIPE 3 OUT
8.54
0.00
0.0057
18
7.9
4.5
44
0.16
124.50
124.25
127.26
PIPE 4 IN
PIPE 4 OUT
4.00
0.00
0.0056
18
7.8
4.4
54
0.20
114.00
113.70
116.70
PIPE 5 IN
PIPE 5 OUT
5.04
0.00
0.0057
18
7.9
4.5
44
0.16
110.20
109.95
112.80
1784-Storm Drainage for Spread(REDO).xls 10-YEAR Date 8110/2022 Time: 1:43 PM Page 2 of 4
ill
PROJECT NAME
Collier Gate Estates
'
DATE
5-24-2022
DESIGN PHASE
PRELIM
CONSTR
REVISION
/ X /
PROJECT NO
1279
LOCATION
Cumberland County, North Carolina
BY
BPB
RECORD
OTHER
CHECKED BY
CSB
(SPECIFY)
n=
g=
h=
0.013
226
26
HYDRAULIC GRADE LINE
PIPE HYDRAULIC SIDESTREAM
AREA RADIUS SUMMATION
(FT) (FT) (CFS)
Hf
He
90 DEG=0.7
60 DEG=0.55
HEAD LOSS
He
BEND LOSS
Hb
K'S
30 DEG=0.28
15 DEG=0.10
Ht
BEND
LOSS
K
CONTINUED
FRICTION
SLOPE
(FT/FT)
FRICTION
VELOCITY
(FPS)
FROM TO
PIPE 1 IN
PIPE 1 OUT
4.9087
0.6250
0.00
0.21
0.09
0.13
0.04
0.47
0.10
0.0034
4.83
PIPE 2 IN
PIPE 2 OUT
4.9087
0.6250
0.00
0.13
0.08
0.11
0.03
0.36
0.10
0.0030
4.58
PIPE 3 IN
PIPE 3 OUT
1.7671
0.3750
0.00
0.29
0.09
0.13
0.04
0.54
0.10
0.0066
4.81
PIPE 4 IN
PIPE 4 OUT
1.7671
0.3750
0.00
0.08
0.02
0.03
0.01
0.13
0.10
0.0014
2.25
PIPE 5 IN
PIPE 5 OUT
1.7671
0.3750
0.00
0.10
0.03
0.04
0.01
0.19
0.10
0.0023
2.84
1784-Storm Drainage for Spread(REDO).xls 10-YEAR Date 8110/2022 Time: 1:43 PM Page 3 of 4
ECT NAME
r Estates
!Ii�@"�""Glatel
DATE
5-24-2022
DESIGN PHASE
PRELIM / /
CONSTR / X /
REVISION
PROJECT NO
1279
LOCATION
Cumberland County, North Carolina
BY
BPB
RECORD
OTHER
CHECKED BY
CSB
(SPECIFY)
n=
g=
h=
0.013
226
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
114.20
114.67
115.57
115.57
INLET
1.18
OK
PIPE 2 IN
PIPE 2 OUT
114.35
114.71
114.77
114.77
INLET
0.93
OK
PIPE 3 IN
PIPE 3 OUT
#REF!
#REF!
126.26
#REF!
#REF!
#REF!
#REF!
PIPE 4 IN
PIPE 4 OUT
#REF!
#REF!
114.97
#REF!
#REF!
#REF!
#REF!
PIPE 5 IN
PIPE 5 OUT
#REF!
#REF!
111.30
#REF!
#REF!
#REF!
#REF!
1784-Storm Drainage for Spread(REDO).xls 10-YEAR Date 8110/2022 Time: 1:43 PM Page 4 of 4