SW6170901 - Oak Hill Living Center (5)

DRAINAGE CALCULATI®NS

1
1
a=;
x -
I
150 LF SHALLOW —
CONCENTRATED FLOW
2% SLOPE
I \
6
/ 319—_ 319— 32�
SWALE MAP
0 50 100 200 300
KN'
1"=100'@11X17
OAK HILL LIVING CENTER
9767 NC 210
n n�niMo ninoru CARn11n1A
/o1N
project#:1463-0479
BOBBITT DESIGN BUILD, INC
B00 GERMAWOWN ROAD
RALEIGH, 27807
PH (BiB)851-7880
SWJ
BOBBITT
FX [phone]
E-MAbobhbtmm
IL tlesl8n®
@
WWW BOBBITT COM
Fbm U. C D-0181
COPYRIGHT &2017 BOBBITT DESIGN BUILD, INC. ALL RIGHTS RESERVED.

STORM DRAINAGE CALCULATIONS DESIGN STORM FREQUENCY — 10 YR. C — AS NOTED
n — 0.012 RCP) RCP — REINFORCED CONCRETE PIPE C.B. — CATCH BASIN J.B. — JUNCTION BOX
n — 0.010 HDPE) HDPE— HIGH DENSITY POLYEfHELENE SMOOTH CORE, DOUBLE WALLED PIPE D I — DROP INLET
STRUCTURE
INCREMENTADESIGN
INLET AREA
FLOW
STORM SEWER DESIGN
STORM PIPE
GRATE
HEADWATER
COMMENTS
INVERTS
FROM TO TYPE 'C' AREA C AREAL I
�� �(n) LENGTH DSA. SCOPE CAPACITY INV. IN INV. OUT REQ'D AVAIL.
4 — DI
mow AFH cFELOCITY
crr"� _°5
— — — — 7.2
— 363 1.0 — — —
3 — FES — — — — _
_ _ _
BIORETENTION SCM
_ _ _ _ _ _ _ — — — — — IDISCHARGE TO BIORETENTION
2 — RISER — — — _ _
2
_ 1315.001-— —
— — — — —
— 26 1.0 — — —
1 — FES — —
— — — —

SWALE CALCULATIONS

OakHillil/ Living Center
976 �
9767 NC 210
Angier, NC
Date: 12-Jul-17 600 German town Road I Raleigh, North Carolina 27607
Ph [phone] I Fx [phone] I design@bobbrU wm
Rev. -
AKLA = U.4/
(AC.)
C = 0.70
WIDTH =
1 = 7.22
(in/hr)
FLOW = 2.38
(cfs)
N = 0.025 (Mannings 'n')
SLOPE= 0.010 (ft/ft)
Z REQUID= 0.40
M = 3 :1 (sideslope)
CHANNEL DIMENSIONS
DEPTH =
1.00
(ft)
WIDTH =
1
(ft) Bottom Width
Z ACTUAL
AREA =
4.00
(sq/ft)
WP =
7.32
(ft)
R =
0.55
Z ACTUAL
267
MUST BE > THAN Z REQ'D. = 0.40
V =
3.98
(ft/sec)

OakHillill Living Center
976
9767 NC 210
Angier, NC
Date: 12 -Jul -17 600 Germatown Road I Raleigh, North Carolina 27607
Ph (919)851.1 980 ( Fx [phone] I design@bobbdt oom
Rev: -
AKtA = 1.1 U
(AC.)
C = 0.70
WIDTH =
1 = 7.22
(in/hr)
FLOW = 5.56
(cfs)
N = 0.025 (Mannings 'n')
SLOPE= 0.016 (ft/ft)
Z REQUID= 0.74
M = 3 :1 (sidesiope)
CHANNEL DIMENSIONS
DEPTH =
1.50
(ft)
WIDTH =
1
(ft) Bottom Width
Z ACTUAL
AREA =
8.25
(sq/ft)
WP =
10.49
(ft)
R =
0.79
Z ACTUAL
7.03
MUST BE > THAN Z REQ'D. = 0.74
V =
6.42
(ft/sec)