SW6240102_Design Calculations_20240507 (7)

STORM DRAINAGE/HYDRAULIC GRADE LINE DATE DESIGN PHASE
ANALYSIS(' 09-22-23 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X/
Raeford Vass Rd Dollar General 2019 REVISION / /
LOCATION BY RECORD / /
Raeford,North Carolina CSB OTHER / /
CHECKED BY (SPECIFY)
CSB
n= 0.013 STORM DRAINAGE SCHEDULE CONTINUED —0.
9= 226
h= 26
INLET Q(+) Q(-) CAPTURED Tc I Cc
INLET Cc INLET JPSTREAF INLET INLET TOTAL INLET PIPE TIME RUNOFF
FROM TO AREAS AREA RUNOFF)ISCHARGI BYPASS BYPASS )ISCHARGI AREAS TIME TIME OF CONC.INTENSITY COEFF.
(INLETS) (AC) COEFF. (CFS) (CFS) (CFS) (CFS) (AC) (MIN) (MIN) (MIN) (IN/HR)
DI-1 01-2 DI-1 0.84 0.70 2.35 0.00 0.00 2.35 0.84 5.00 0.00 5.00 7.88 0.70
01-2 FES-3 DI-2 0.39 0.90 1.40 0.00 0.00 1.40 1.23 5.00 0.55 5.55 7.88 0.90
-1111
2019-Storm drainage.xlsx 10-YEAR Date:5/7/2024 Time:11:48 AM Page 1 of 4

STORM DRAINAGE/HYDRAULIC GRADE LII DATE DESIGN PHASE
ANALYSIS(10 YEAR) 09-22-23 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X/
Raeford Vass Rd Dollar General 2019 REVISION / /
LOCATION BY RECORD / /
Raeford,North Carolina CSB OTHER / /
CHECKED BY (SPECIFY)
CSB
n= 0.013 STORM DRAINAGE SCHEDULE-CONTINUED
g= 226 I
h= 26
Q Q UPSTREAF
SIDE- CAPACITY SEGMENT UPPER LOWER TOP
FROM TO )ISCHARGI STREAM SLOPE DIA. (FULL) V FULL LENGTH TIME INV. INV. ELEV.
(CFS) (CFS) (IN) `(CFS) (FPS) (FT) (MIN) (FT) (FT) (FT)
i
01-1 DI-2 4.63 0.00 0.0100 15 6.5 5.3 172 0.55 237.40 235.67 40.84
DI-2 FES-3 8.72 0.00 0.0468 15 14.0 11.4 87 0.13 235.67 231.58
2019-Storm drainage.xlsx 10-YEAR Date:5/7/2024 Time:11:48 AM Page 2 of 4

BEND LOS: K'S
n= 0.013 90 DEG=0.7 30 DEG=0.28
g= 226 10 DEG=0.55 15 DEG=0.10
h= 26
I CI COVER
BOX COVER 1 BELOW 1IDESTREA BEND
FROM TO DEPTH SUBGRADEiUMMATIOI LOSS
` (8") (CFS) K
DI-1 DI-2 3.44 1.07 0.00 0.55
DI-2 FES-3 5.60 3.23 0.00 0.10
2019-Storm drainage.xisx 10-YEAR Date:5/7/2024 Time:11:48 AM Page 3 of 4

STORM DRAINAGE/HYDRAULIC GRADE LINE DATE DESIGN PHASE
ANALYSIS(10 YEAR) 09-22-23 PRELIM / /
PROJECT NAME PROJECT NO CONSTR / X/
Raeford Vass Rd Dollar General 2019 REVISION / /
LOCATION BY RECORD / /
Raeford,North Carolina CSB OTHER / /
CHECKED BY (SPECIFY)
CSB
DESIGN CRITERIA:
n= 0.013 I HYDRAULIC GRADE LINE-CONTINUED 1.DESIGN FOR THE 10 YR STORM
g= 226 2.ASSUME TIME OF CONCENTRATION TO
h= 26 AN INDIVIDUAL INLET=5 MIN.(Unless otherwise noted)
INLET W.S.ELEV. 3.INTENSITY=g/(h+T),FOR 10 YR STORM
OUTLET OUTLET INLET USE 1 FLOW FREE- HGL (g and h were derived from Raleigh-Durham Intensity-
FROM TO W.S.ELEV CONTOL CONTROL CONDITION BOARD TO CROW, COMMENTS CAPACITY VS Duration-Frequency Charts,REF:NC Erosion and
(FT) (FT) (FT) (FT) CONTROL (FT) i DISCHARGE Sediment Control Planning and Design Manual)
4.MANNINGS"n"FACTOR=0.013
DI-1 DI-2 238.47 239.61 238.64 239.61 OUTLET 1.23 (0.96) OK 1.84 5.RUNOFF COEFICIENT Cc=0.50(Per CR-7107)
DI-2 FES-3 232.58 234.71 238.47 238.47 INLET 2.80 (1.55) OK 5.25
2019-Storm drainage.xlsx 10-YEAR Date:5/7/2024 Time:11:48 AM Page 4 of 4