HomeMy WebLinkAboutSW6220602_Design Calculations (Storm Drains)_20220810• " ` "
PROJECT NAME
TARRANT ESTATES
DATE
3-23-2022
PROJECT NO
1827
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
PIPE 6 IN
PIPE 6 OUT
PIPE 6 IN
TSB 5
TSB 5 OUT
TSB 5
1827-Storm Drainage for Spread.xls 10-YEAR Date 8110/2022 Time: 11:31 AM Pagel of 4
• " I " `c
PROJECT NAME
TARRANT ESTATES
DATE
3-23-2022
PROJECT NO
1827
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
10.64
0.00
0.0052
24
16.3
5.2
48
0.15
135.95
135.70
138.39
PIPE 2 IN
PIPE 2 OUT
13.40
0.00
0.0054
24
16.6
5.3
56
0.18
133.90
133.60
136.40
PIPE 3 IN
PIPE 3 OUT
5.34
0.00
0.0052
18
7.6
4.3
48
0.19
134.30
134.05
136.32
PIPE 4 IN
PIPE 4 OUT
13.94
0.00
0.0051
24
16.2
5.1
49
0.16
131.80
131.55
134.30
PIPE 5 IN
PIPE 5 OUT
8.12
0.00
0.0054
18
7.7
4.3
56
0.21
131.15
130.85
133.20
PIPE 6 IN
PIPE 6 OUT
28.06
0.00
0.0052
30
29.6
6.0
48
0.13
128.30
128.05
131.30
TSB 5
TSB 5 OUT
17.31
0.00
0.0050
18
7.4
4.2
100
0.40
126.00
125.50
132.00
1827-Storm Drainage for Spread.xls 10-YEAR Date 8110t2022 Time: 11:31 AM Page 2 of 4
• " ` `
PROJECT NAME
TARRANT ESTATES
`
DATE
3-23-2022
PROJECT NO
1827
DESIGN PHASE
PRELIM
CONSTR
REVISION
/ /
/ X /
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
3.1416
0.5000
0.00
0.11
0.04
0.06
0.02
0.23
0.10
0.0022
3.37
PIPE 2 IN
PIPE 2 OUT
3.1416
0.5000
0.00
0.19
0.07
0.10
0.03
0.39
0.10
0.0035
4.24
PIPE 3 IN
PIPE 3 OUT
1.7671
0.3750
0.00
0.12
0.04
0.05
0.01
0.22
0.10
0.0026
3.01
PIPE 4 IN
PIPE 4 OUT
3.1416
0.5000
0.00
0.18
0.08
0.11
0.03
0.40
0.10
0.0038
4.41
PIPE 5 IN
PIPE 5 OUT
1.7671
0.3750
0.00
0.33
0.08
0.11
0.03
0.56
0.10
0.0059
4.58
PIPE 6 IN
PIPE 6 OUT
4.9087
0.6250
#REF!
0.22
0.13
0.18
0.05
0.57
0.10
0.0046
5.68
TSB 5
TSB 5 OUT
1.7671
0.3750
#REF!
2.70
0.37
0.52
0.15
3.73
0.10
0.0270
9.75
1827-Storm Drainage for Spread.xls 10-YEAR Date 8/10/2022 Time: 11:31 AM Page 3 of 4
" I"`DESIGN
NAME
7TARRANT ESTATES
3-23-2022
PROJECT NO
1827
PHASE
PRELIMCT
CONSTR / X
REVISIONION
County, North Carolina
BY
BPB
RECORDerland
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
137.30
137.53
137.44
137.53
OUTLET
0.86
OK
PIPE 2 IN
PIPE 2 OUT
135.20
135.59
135.68
135.68
INLET
0.72
OK
PIPE 3 IN
PIPE 3 OUT
#REF!
#REF!
135.44
#REF!
#REF!
#REF!
#REF!
PIPE 4 IN
PIPE 4 OUT
#REF!
#REF!
133.65
#REF!
#REF!
#REF!
#REF!
PIPE 5 IN
PIPE 5 OUT
#REF!
#REF!
132.81
#REF!
#REF!
#REF!
#REF!
PIPE 6 IN
PIPE 6 OUT
#REF!
#REF!
130.96
#REF!
#REF!
#REF!
#REF!
TSB 5
TSB 5 OUT
#REF!
#REF!
130.89
#REF!
#REF!
#REF!
#REF!
1827-Storm Drainage for Spread.xls 10-YEAR Date 8110/2022 Time: 11:31 AM Page 4 of 4