00-0332-044 _ — 0 LO. M- _,i�_E
J I U M r
O N 0 N a
_...- - - - -- -- \Existing N �
Power) n�s +� E 3
CL of SW 70th St Above I
rn Z '
Cn M 0
1
+12.01' - - - - - - +12.51' - c V1 � v �
« - -�
C.B. W/ POLL 18„ EXISTING FIRE HYDRANT
2
W
- - CNTRL. BAFFLE H.D.P.E.
O - - - - - ® 12.01' NGVD
a
-+1-1.98'
_ o
270'_0"
+12.53' +12.36' +12.50' I - -- - - _ -
_5
- O - - O - ------O — - \
I �
NOTE:
i� EXISTING FIRE HYDRANT
TRENCH TOP BE 3'-0" WIDE BY 15'-0" DEEP AND A MINIMUM OF 25 LF
rf
+12.46 +12.62 - LL
+12.53 - _
Existing
Powerlines
Above Existing Site w Elev DRAINAGE STRUCTURE
Scale 1" = 30'-0" N.T.S.
A NEIGHBORING FIRE HYDRANTS
N.T.S.
I
DRAINAGE CALCULATIONS
HYDRAULIC CONDUCTIVITY KI 0,0012 cfs/CFt,
1Q New Detail TIME OF CONCENTRATION Tc: 10 Minutes
TRENCH WIDTH WI 3 Feet C_
AVAILABLE HEAD H21 9 Feet O
UNSATURATED DEPTH Dul 7 Feet U >
SATURATED DEPTH Ds: 6 Feet I Q I�
AREA 1 AREA2 AREAS �-
PROJECT DRAINAGE AREA Ac: 13006 1392 Ft ^2 O -a--d
RAINFALL INTENSITY II 6,6 6,6 In /Hr, Lc.
RUN-OFF C❑EFFICIENT CI 0,9 0,45 (:;) +,
RUN-OFF RATE Q1 1.77 03 0,00 c f s C: •�
MAXIMUM RUN-OFF RATE (9) = 1.87 c f,s, •—
Q) O
NOTE: IF Ds<Du, USE L1 Ll= Q m (f) Cn
Kx(H2)KW+2H2xDu - Du^2 + 2)KH2)KDs) N O
C)
L1, TRENCH LENGTH REQUIRED = 6,78 fT >
N
IF Ds>Du, THEN USE L2 L2= Q 0 O O
Kx(2xH2xDu - Du^2 + 2xH2xDs)
L2, TRENCH LENGTH REQUIRED = 737 Ft. z E
Q D
O O
O �
O
GRATE EL,
TOP OF BALLAST ROCK EL
H2
` 01 . 15.2000
Revisions
OCT, WATER EL. ,.
l 07. 14.00
t „ � s. ,.
12.01 .00
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