HomeMy WebLinkAboutSW6210905_Plansheet - Existing Drainage Area_20210927I
3
I
5
C
0
SHALLOW CONCENTRATED FLOW f
/ _ POA C - , 871 FT
7
EIP
N. 576162.0040 I
11 I \ \ ELEV. 267.80' � II
�JI / EIP r / /
I N:576128.7230 N /
E: 1985890.9920
ELEV. 262.24' Cp C
LLI
/ a \ DRAINAGE AREA C°
I
/ AREA: 121,640
SF.
/2.79 AC. "
o
N
I _
I
J EIP N
SEWER/UTILITY EASEMENT N: 575943.3380 I
/ SS MANHOLE E:1986175.3640 POA A SHALLOW CONCENTRATED FLOW / / / I SEE PB 2007 PG 15 RIM: 270.95' ELEWM
V: 271.39' P II
I 932 FT / ^ INV: 262.67' �! o I
L -7-
f _CL
-S -9 --SS I
> _ _ _
�J I \✓ r-� i /� - j % J ^ z 275--/
2j6 OV
"�-277- J I
I I I I III IIII 1I1 1 \ \ \ 2,5 0 /
POA B I I " l l l l I // ^) �278 J I
I I >\ \\ DRAINAGE AREA A I I p
\ \\ \ AREA: 260,937 SF.
/5.99 AC
79
2B
"I �t
"w R/W
/
DRAINAGE AREA B
AREA: 6,887 SF.
/0.16 AC.
EIP
\ N: 575566.3450 EIP
E:1985704.1770 N: 575559.2640--� INV:
ELEV. 269.81' E:1986287.4300 281.97'
\ ` ELEV. 284. 38'
r
\ / A
SHEET FLOW
/ 300 FT
SHEET FLOW
50 FT
24 RCP T
/ INV:
.10'
/
PRE -DEVELOPMENT WEIGHTED CURVE
NUMBER CALCULATION
Drainage Area
Existing Drainage Area A
Area (SF)
Area (Ac)
CN
CN*Ac
Lawn, Fair
248,149
5.70
84
478.52
Gravel
0
0.00
91
0.00
Roof/Conc./Asphalt
0
0.00
98
0.00
Woods, Fair
12,788
0.29
79
23.19
Total
260,937
5.99
501.72
Weighted CN (unitless) = 84
Total Impervious Area (SF) = 0
Drainage Area
Existing Drainage Area B
Area (SF)
Area (Ac)
CN
CN*Ac
Lawn, Fair
0
0.00
84
0.00
Gravel
0
0.00
91
0.00
Roof/Conc./Asphalt
0
0.00
98
0.00
Woods, Fair
6,887
0.16
79
12.49
Total
6,887
0.16
12.49
Weighted CN (unitless) = 79
Total Impervious Area (SF) = 0
Drainage Area
Existing Drianage Area C
Area (SF)
Area (Ac)
CN
CN*Ac
Lawn, Fair
105,258
2.42
84
202.98
Gravel
0
0.00
91
0.00
Roof/Conc./Asphalt
16,382
0.38
98
36.86
Woods, Fair
0
0.00
79
0.00
Total
121,640
2.79
239.83
Weighted CN (unitless) = 86
CTotal Impervious Area (SF) = 16,382
SF Tota 1 = 389,464
Acres Tota 1 = 8.94
EXISTING GROUND COVER LEGEND
LAWN
ASPHALT/ROOF
WOODS
LINE LEGEND
PROPERTY BOUNDARY
- - EX. INTERIOR/ADJ LOT LINE
ACCESS EASEMENT
- - - - - - BUILDING SETBACK
-- W -_ EXISTING WATER LINE
--ss-- EXISTING SEWER LINE
-- FO-- EXISTING FIBER OPTIC LINE
oHu EXISTING OVERHEAD POWER
UGE EXISTING UNDERGROUND POWER
SS PROPOSED SANITARY SEWER
NORTH
NOT FOR CONSTRUCTION
PRE -DEVELOPMENT
DRAINAGE AREA MAP
SCALE: 1 » = 60 ' (DRAWING SCALED FOR 24x36 INCH PLOTS)
GRO�A
� R�\'fECTU/Zy� o /O
Z CERT.
353 g n
• 4-0 CAROB
�'��EIGH,NG
NC ENGINEERING
LICENSE NO. P-0803
FOR REVIEW
ONLY
U
W
0 U
W
<
UN
(n
z
QJ
0 O
100 Lo 0)
LO I- N N
-0 O 1- N
(n
0 0r('0L66 N
::)LN�V)-C
Ld
Ld
0
Q G)0)@
z
z
W -0
t: O
W
J
i
= .2) 0
W� N Xji
U
Ix LLW
MEN
OEM
J
Q
z
W
0
U
Z
J
Of
z
0�
_
OL
N 0
>- O
N
Q
Z
3:
-i
0-
0o
ICI
=
= z
F-
U
U
0 a
Z cn
BY rawn SVO
Checked
By SRN
DATE:
30 JUN 2021
REVISED:
1L16 SEP 2021
w
DRAINAGE
MAPS
PRE-
P
DEVELOPMENT
J
APa
a
Job Code HCSS 1
W,